Merge pull request #2210 from cesanta/devdash

run pack on Win
2026-10-25 12:04:47 +00:00 · 2023-05-23 11:06:47 -03:00 · 2023-05-23 11:02:24 -03:00 · 2023-05-23 08:43:57 +01:00 · 2023-05-23 03:50:53 +01:00 · 2023-05-23 03:49:24 +01:00
1697 changed files with 694423 additions and 12217 deletions
@@ -0,0 +1,13 @@
 - My goal is: _describe_
 - My actions were: _describe_
 - My expectation was: _describe_
 - The result I saw: _provide logs or description_
 - My question is: _your question_
 # Environment
 - mongoose version: _X.Y_
 - Compiler/IDE and SDK: ZZZ version _X.Y_
 - Target hardware/board: _?_
 - Connectivity chip/module: _?_
 - Target RTOS/OS (if applicable): _?_
@@ -0,0 +1,35 @@
 name: CIFuzz
 on:
  pull_request:
    paths:
      - "mongoose.c"
      - "mongoose.h"
 jobs:
  Fuzzing:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^src/' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - name: Build Fuzzers
      id: build
      if: ${{ env.GO == 1 }}
      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
      with:
        oss-fuzz-project-name: 'mongoose'
        dry-run: false
        language: c++
    - name: Run Fuzzers
      if: ${{ env.GO == 1 }}
      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
      with:
        oss-fuzz-project-name: 'mongoose'
        fuzz-seconds: 600
        dry-run: false
        language: c++
    - name: Upload Crash
      uses: actions/upload-artifact@v1
      if: env.GO == 1 && failure() && steps.build.outcome == 'success'
      with:
        name: artifacts
        path: ./out/artifacts
@@ -0,0 +1,281 @@
 name: build
 on:
  push:
    paths:
      - "**Makefile"
      - "**.c"
      - "**.h"
 env:
  IPV6: 0
 jobs:
  linux:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        cc: [gcc, clang, g++, clang++]
        target: [test, mip_test]
        ssl: [MBEDTLS, OPENSSL]
    name: linux ${{ matrix.target }} CC=${{ matrix.cc }} SSL=${{ matrix.ssl }}
    env:
      CC: ${{ matrix.cc }}
      SSL: ${{ matrix.ssl }}
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: ./test/setup_ga_network.sh && sudo apt -y update ; sudo apt -y install libmbedtls-dev && make ${{ matrix.target }}
  s390:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update ; sudo apt -y install qemu binfmt-support qemu-user-static && docker run --rm --privileged multiarch/qemu-user-static --reset -p yes && make s390
  armhf:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update ; sudo apt -y install qemu binfmt-support qemu-user-static && docker run --rm --privileged multiarch/qemu-user-static --reset -p yes && make armhf
  linux2:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update ; sudo apt -y install libmbedtls-dev valgrind
    - if: ${{ env.GO == 1 }}
      run: make unamalgamated && make valgrind && make mg_prefix
  macos:
    runs-on: macos-latest
    env: { HOMEBREW_NO_AUTO_UPDATE: 1 }
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: brew install jq mbedtls openssl
    - if: ${{ env.GO == 1 }}
      run:  make test upload-coverage TFLAGS=-DNO_SNTP_CHECK SSL=OPENSSL ASAN_OPTIONS= OPENSSL=`echo /usr/local/Cellar/openssl*/*`
    - if: ${{ env.GO == 1 }}
      run:  make test SSL=MBEDTLS TFLAGS=-DNO_SNTP_CHECK ASAN_OPTIONS= MBEDTLS=`echo /usr/local/Cellar/mbedtls*/*`
    - if: ${{ env.GO == 1 }}
      run: make mg_prefix
  windows:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^test|^src/.*.[ch]' ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: make vc98 vc17 vc22 mingw mingw++
  arduino-xiao:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh '^examples/arduino|^src/.*.[ch]'  ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: make arduino-xiao
  arm:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - run: make arm
  riscv:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - run: make riscv
  examples:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - run: sudo apt -y install libmbedtls-dev libpcap-dev
    - run: make clean examples
    - run: make clean test MG_ENABLE_POLL=1
  examples_win:
    runs-on: windows-latest
    steps:
    - uses: actions/checkout@v3
 #    - uses: egor-tensin/setup-mingw@v2
 #      with:
 #        platform: x64
    - name: test they build
      run: make examples_win
      shell: cmd
    - name: test they clean
      run: make clean_examples_win
      shell: cmd
  examples_mac:
    runs-on: macos-latest
    env: { HOMEBREW_NO_AUTO_UPDATE: 1 }
    steps:
    - uses: actions/checkout@v3
    - run: make examples_mac
    - run: make clean_examples_mac
  test_f7:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh "^src|examples/stm32/nucleo-f7" ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update; sudo apt -y install gcc-arm-none-eabi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-f746zg-baremetal test VCON_API_KEY=${{secrets.VCON_API_KEY}}
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-f746zg-freertos test VCON_API_KEY=${{secrets.VCON_API_KEY}}
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-f746zg-freertos-tcp test VCON_API_KEY=${{secrets.VCON_API_KEY}}
  test_f4:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh "^src|examples/stm32/nucleo-f4" ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update; sudo apt -y install gcc-arm-none-eabi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-f429zi-baremetal test VCON_API_KEY=${{secrets.VCON_API_KEY}}
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-f429zi-freertos test VCON_API_KEY=${{secrets.VCON_API_KEY}}
  test_h7:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 3 }
    - run: if ./test/match_changed_files.sh "^src|examples/stm32/nucleo-h7" ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update; sudo apt -y install gcc-arm-none-eabi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/stm32/nucleo-h743zi-baremetal test VCON_API_KEY=${{secrets.VCON_API_KEY}}
  test_tm4c:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh "^src|examples/ti/ek-tm4c" ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update; sudo apt -y install gcc-arm-none-eabi
    - run: echo GO=0 > $GITHUB_ENV ; if ./test/match_changed_files.sh "^src|examples/ti/ek-tm4c1294xl-baremetal" ; then echo GO=1 > $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/ti/ek-tm4c1294xl-baremetal test VCON_API_KEY=${{secrets.VCON_API_KEY}}
    - run: echo GO=0 > $GITHUB_ENV ; if ./test/match_changed_files.sh "^src|examples/ti/ek-tm4c1294xl-freertos" ; then echo GO=1 > $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/ti/ek-tm4c1294xl-freertos test VCON_API_KEY=${{secrets.VCON_API_KEY}}
  test_pico_w5500:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
      with: { fetch-depth: 2 }
    - run: if ./test/match_changed_files.sh "^src|examples/rp2040/pico-w5500" ; then echo GO=1 >> $GITHUB_ENV ; fi
    - if: ${{ env.GO == 1 }}
      run: sudo apt -y update; sudo apt -y install gcc-arm-none-eabi
    - if: ${{ env.GO == 1 }}
      run:  make -C examples/rp2040/pico-w5500 test VCON_API_KEY=${{secrets.VCON_API_KEY}}
  matrix_examples:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        example:
          - path: esp32/device-dashboard
          - path: esp32/uart-bridge
          - path: esp8266/http-client-server
          - path: stm32/nucleo-h743zi-baremetal
          - path: stm32/stm32-nucleo-f746z
          - path: stm32/stm32-nucleo-f746zg
          - path: stm32/stm32-nucleo-f429z
          - path: stm32/stm32-nucleo-h743z
          - path: stm32/nucleo-f429zi-baremetal
          - path: stm32/nucleo-f429zi-freertos
          - path: stm32/nucleo-f429zi-rndis
          - path: stm32/nucleo-f746zg-baremetal
          - path: stm32/nucleo-f746zg-freertos
          - path: stm32/nucleo-f746zg-freertos-tcp
          - path: stm32/nucleo-f746zg-rndis
          - path: nxp/nxp-mimxrt1020-azurertos
          - path: nxp/nxp-frdmk66f-freertos
          - path: nxp/nxp-lpcxpresso54s018m-freertos
          - path: nxp/nxp-mimxrt1020-freertos
          - path: nxp/nxp-evkbimxrt1050-lwip-freertos
          - path: nxp/nxp-evkmimxrt1020-lwip-freertos
          - path: nxp/nxp-evkmimxrt1024-lwip-freertos
          - path: nxp/nxp-evkmimxrt1060-lwip-freertos
          - path: nxp/nxp-evkmimxrt1064-lwip-freertos
          - path: nxp/nxp-evkmimxrt1160-cm7-lwip-freertos
          - path: nxp/nxp-evkmimxrt1170-cm7-lwip-freertos
          - path: nxp/nxp-frdmk64f-lwip-freertos
          - path: nxp/nxp-frdmk66f-lwip-freertos
          - path: nxp/nxp-lpcxpresso54018-lwip-freertos
          - path: nxp/nxp-lpcxpresso54608-lwip-freertos
          - path: nxp/nxp-lpcxpresso54618-lwip-freertos
          - path: nxp/nxp-lpcxpresso54628-lwip-freertos
          - path: nxp/nxp-twrk65f180m-lwip-freertos
          - path: nxp/nxp-twrkv58f220m-lwip-freertos
          - path: infineon/infineon-xmc4700_4800-lwip-rtx-rtos
          - path: ti/ti-ek-tm4c1294xl-http-server
          - path: ti/ek-tm4c1294xl-baremetal
          - path: ti/ek-tm4c1294xl-freertos
          - path: rp2040/pico-rmii
          - path: rp2040/pico-rndis-dashboard
          - path: rp2040/pico-w
          - path: rp2040/pico-w5500
    name: ${{ matrix.example.path }}
    steps:
      - uses: actions/checkout@v3
        with: { fetch-depth: 2 }
      - run: if ./test/match_changed_files.sh '^src|^examples/${{ matrix.example.path }}'; then echo GO=1 >> $GITHUB_ENV ; fi
      - if: ${{ env.GO == 1 }}
        run: sudo apt -y update ; sudo apt -y install gcc-arm-none-eabi
      - if: ${{ env.GO == 1 }}
        run: make -C examples/${{ matrix.example.path }} build
  cube_examples:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with: { fetch-depth: 2 }
      - run: if ./test/match_changed_files.sh '^src|examples/stm32/nucleo-*-cube-*'; then echo GO=1 >> $GITHUB_ENV ; fi
      - if: ${{ env.GO == 1 }}
        run: cd test/cube && make
  zephyr_examples:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with: { fetch-depth: 2 }
      - run: if ./test/match_changed_files.sh '^src/.*.[ch]|^examples/zephyr'; then sudo apt -y update ; sudo apt -y install gcc-arm-none-eabi ; fi
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr init
      - name: minify manifest
        if: ${{ env.GO == 1 }}
        uses: mikefarah/yq@master
        with:
          cmd: yq -i eval '(.manifest.defaults, .manifest.remotes, .manifest.projects[] | select(.name == "cmsis" or .name == "hal_stm32" or .name == "mbedtls" or .name == "mcuboot" or .name == "picolibc" | del(.null) ), .manifest.self) as $i ireduce({};setpath($i | path; $i)) | del(.manifest.projects.[].null) | del(..|select(length==0))' examples/zephyr/zephyrproject/zephyr/west.yml
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr update
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr/device-dashboard build
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr/http-client build
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr/http-server build
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr/mqtt-aws-client build
      - if: ${{ env.GO == 1 }}
        run: make -C examples/zephyr/websocket-server build
@@ -1,23 +0,0 @@
 language: c
 sudo: false
 after_success: bash <(curl -s https://codecov.io/bash)
 install:
  - if test "$TRAVIS_OS_NAME" = linux; then sudo apt-get install libmbedtls-dev; else brew install jq mbedtls; fi
 os:
  - linux
  - osx
 compiler:
  - clang
  - gcc
 script: make test test++ ex
 matrix:
  include:
    - os: osx
      compiler: clang
      script: make mg_prefix
    - os: linux
      compiler: msvc98
      script: make vc98 vc2017
      sudo: required
      services:
        - docker
@@ -1,5 +1,5 @@
 Copyright (c) 2004-2013 Sergey Lyubka
-Copyright (c) 2013-2020 Cesanta Software Limited
+Copyright (c) 2013-2023 Cesanta Software Limited
 All rights reserved
 This software is dual-licensed: you can redistribute it and/or modify
@@ -13,4 +13,4 @@ warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 See the GNU General Public License for more details.
 Alternatively, you can license this software under a commercial
-license, as set out in <https://www.cesanta.com/license>.
+license, as set out in <https://mongoose.ws/licensing/>.
@@ -1,90 +1,206 @@
-SRCS = $(wildcard src/*.c)
+SRCS = mongoose.c test/unit_test.c test/packed_fs.c
-HDRS = $(wildcard src/*.h)
+HDRS = $(wildcard src/*.h) $(wildcard src/tcpip/*.h)
-DEFS ?= -DMG_MAX_HTTP_HEADERS=5 -DMG_ENABLE_LINES -DMG_ENABLE_HTTP_DEBUG_ENDPOINT=1 -DMG_ENABLE_DIRECTORY_LISTING=1
+DEFS ?= -DMG_MAX_HTTP_HEADERS=7 -DMG_ENABLE_LINES -DMG_ENABLE_PACKED_FS=1 -DMG_ENABLE_SSI=1 -DMG_ENABLE_ASSERT=1
-CFLAGS ?= -W -Wall -Werror -Isrc -I. -O0 -g $(DEFS) $(TFLAGS) $(EXTRA)
+WARN ?= -pedantic -W -Wall -Werror -Wshadow -Wdouble-promotion -fno-common -Wconversion -Wundef
-SSL ?= MBEDTLS
+OPTS ?= -O3 -g3
-CDIR ?= $(realpath $(CURDIR))
+INCS ?= -Isrc -I.
-VC98 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc98
+SSL ?=
-VC2017 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc2017
+CWD ?= $(realpath $(CURDIR))
-GCC = docker run --rm -v $(CDIR):$(CDIR) -w $(CDIR) mdashnet/cc2
+ENV ?=  -e Tmp=. -e WINEDEBUG=-all 
-VCFLAGS = /nologo /W3 /O2 /I. $(DEFS) $(TFLAGS)
+DOCKER ?= docker run --platform linux/amd64 --rm $(ENV) -v $(CWD):$(CWD) -w $(CWD)
-CLANG ?= clang # /usr/local/opt/llvm\@9/bin/clang
+VCFLAGS = /nologo /W3 /O2 /MD /I. $(DEFS) $(TFLAGS)
-ASAN_OPTIONS ?=
+IPV6 ?= 1
-EXAMPLES := $(wildcard examples/*)
+ASAN ?= -fsanitize=address,undefined,alignment -fno-sanitize-recover=all -fno-omit-frame-pointer -fno-common
-EXAMPLE_TARGET ?= example
+ASAN_OPTIONS ?= detect_leaks=1
-.PHONY: ex test
+EXAMPLES := $(dir $(wildcard examples/*/Makefile))
 EXAMPLES_MAC := $(filter-out examples/mip-pcap/ examples/mip-tap/, $(EXAMPLES))
 EXAMPLES_WIN := $(dir $(wildcard examples/device-dashboard/Makefile) $(wildcard examples/file-*/Makefile) $(wildcard examples/http-*/Makefile) $(wildcard examples/mqtt-*/Makefile) $(wildcard examples/websocket-*/Makefile) $(wildcard examples/webui-*/Makefile))
 EXAMPLES_EMBEDDED := $(filter-out $(wildcard examples/zephyr/*/), $(dir $(wildcard examples/*/*/Makefile)))
 PREFIX ?= /usr/local
 VERSION ?= $(shell cut -d'"' -f2 src/version.h)
 COMMON_CFLAGS ?= $(C_WARN) $(WARN) $(INCS) $(DEFS) -DMG_ENABLE_IPV6=$(IPV6) $(TFLAGS) -pthread
 CFLAGS ?= $(OPTS) $(ASAN) $(COMMON_CFLAGS)
 VALGRIND_CFLAGS ?= $(OPTS) $(COMMON_CFLAGS)
 VALGRIND_RUN ?= valgrind --tool=memcheck --gen-suppressions=all --leak-check=full --show-leak-kinds=all --leak-resolution=high --track-origins=yes --error-exitcode=1 --exit-on-first-error=yes --fair-sched=yes
 .PHONY: clean_examples examples mip_test test valgrind
 ifeq "$(findstring ++,$(CC))" ""
 # $(CC) does not end with ++, i.e. we're using C. Apply C flags
 C_WARN ?= -Wmissing-prototypes -Wstrict-prototypes
 else
 # $(CC) ends with ++, i.e. we're using C++. Apply C++ flags
 C_WARN ?= -Wno-deprecated
 endif
 ifeq "$(SSL)" "MBEDTLS"
-MBEDTLS_DIR ?= $(shell brew --cellar mbedtls)
+MBEDTLS ?= /usr/local
-MBEDTLS_VER ?= $(shell brew info mbedtls --json | jq -j .[0].installed[0].version)
+CFLAGS  += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
 MBEDTLS ?= $(MBEDTLS_DIR)/$(MBEDTLS_VER)
 CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
 LDFLAGS ?= -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
 endif
 ifeq "$(SSL)" "OPENSSL"
-OPENSSLDIR ?= $(shell "$(brew --cellar openssl)/$(brew info openssl --json | jq -j .[0].installed[0].version)")
+OPENSSL ?= /usr/local
-CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSLDIR)/include
+CFLAGS  += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
-LDFLAGS ?= -L$(OPENSSLDIR)/lib -lssl -lcrypto
+LDFLAGS ?= -L$(OPENSSL)/lib -lssl -lcrypto
 endif
-all: mg_prefix test test++ ex vc98 vc2017 linux linux++ infer fuzz
+all:
 	$(MAKE) -C examples/http-server
-ex:
+tall: mg_prefix unamalgamated test mip_test arm examples vc98 vc17 vc22 mingw mingw++ fuzz
-	@for X in $(EXAMPLES); do $(MAKE) -C $$X $(EXAMPLE_TARGET); done
+
 mip_test: test/mip_test.c mongoose.c mongoose.h Makefile mip_tap_test
 	$(CC) test/mip_test.c $(INCS) $(WARN) $(OPTS) $(C_WARN) $(ASAN) -o $@
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(RUN) ./$@
 mip_tap_test: test/mip_tap_test.c mongoose.c mongoose.h Makefile
 	$(CC) test/mip_tap_test.c $(INCS) $(WARN) $(OPTS) $(C_WARN) $(ASAN) -o $@
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(RUN) ./$@
 examples:
 	@for X in $(EXAMPLES); do test -f $$X/Makefile || continue; $(MAKE) -C $$X example || exit 1; done
 clean_examples:
 	for X in $(EXAMPLES); do test -f $$X/Makefile || continue; $(MAKE) -C $$X clean || exit 1; done
 examples_mac:
 	for X in $(EXAMPLES_MAC); do test -f $$X/Makefile || continue; $(MAKE) -C $$X example || exit 1; done
 clean_examples_mac:
 	for X in $(EXAMPLES_MAC); do test -f $$X/Makefile || continue; $(MAKE) -C $$X clean || exit 1; done
 examples_win:
 	$(foreach X, $(EXAMPLES_WIN), $(MAKE) -C $(X) example &)
 clean_examples_win:
 	$(foreach X, $(EXAMPLES_WIN), $(MAKE) -C $(X) clean &)
 test/packed_fs.c: Makefile src/ssi.h test/fuzz.c test/data/a.txt
 	$(CC) $(CFLAGS) test/pack.c -o pack
 	$(RUN) ./pack Makefile src/ssi.h test/fuzz.c test/data/a.txt test/data/range.txt > $@
 DIR ?= test/data
 OUT ?= packed_fs.c
 mkfs:
 	$(CC) $(CFLAGS) test/pack.c -o pack
 	$(RUN) ./pack -s $(DIR) `find $(DIR) -type f` > $(OUT)
 #	find $(DIR) -type f | sed -e s,^$(DIR),,g -e s,^/,,g
 # Check that all external (exported) symbols have "mg_" prefix
 mg_prefix: mongoose.c mongoose.h
-	$(CLANG) mongoose.c $(CFLAGS) -c -o /tmp/x.o && nm /tmp/x.o | grep ' T' | grep -v 'mg_' ; test $$? = 1
+	$(CC) mongoose.c $(CFLAGS) -c -o /tmp/x.o && nm /tmp/x.o | grep ' T ' | grep -v 'mg_' ; test $$? = 1
-# C++ build
+musl: test
-test++: CLANG = g++ -Wno-deprecated -Wno-missing-field-initializers
+musl: ASAN =
-test++: unamalgamated
+musl: WARN += -Wno-sign-conversion
 musl: CC = $(DOCKER) mdashnet/cc1 gcc
 musl: RUN = $(DOCKER) mdashnet/cc1
 # Make sure we can build from an unamalgamated sources
-unamalgamated: $(SRCS) $(HDRS) Makefile
+unamalgamated: $(HDRS) Makefile test/packed_fs.c
-	$(CLANG) src/*.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -g -o unit_test
+	$(CC) src/*.c test/packed_fs.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -g -o unit_test
 fuzz: ASAN = -fsanitize=fuzzer,signed-integer-overflow,address,undefined
 fuzz: mongoose.c mongoose.h Makefile test/fuzz.c
-	$(CLANG) mongoose.c test/fuzz.c $(CFLAGS) -DMG_ENABLE_LOG=0 -fsanitize=fuzzer,signed-integer-overflow,address $(LDFLAGS) -g -o fuzzer
+	$(CC) test/fuzz.c $(OPTS) $(WARN) $(INCS) $(TFLAGS) $(ASAN) -o fuzzer
-	$(DEBUGGER) ./fuzzer
+	$(RUN) ./fuzzer
-# make CLANG=/usr/local/opt/llvm\@8/bin/clang ASAN_OPTIONS=detect_leaks=1
+FUZZDATA ?= /tmp/fuzzdata
-test: CFLAGS += -DMG_ENABLE_IPV6=1 -fsanitize=address#,undefined
+fuzz2: mongoose.c mongoose.h Makefile test/fuzz.c
-test: mongoose.c mongoose.h  Makefile test/unit_test.c
+	$(CC) test/fuzz.c -DMAIN $(OPTS) $(WARN) $(ASAN) $(INCS) -o fuzzer
-	$(CLANG) mongoose.c test/unit_test.c $(CFLAGS) -coverage $(LDFLAGS) -g -o unit_test
+	$(RUN) ./fuzzer $(FUZZDATA)
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(DEBUGGER) ./unit_test
 test: Makefile mongoose.h $(SRCS)
 	$(CC) $(SRCS) $(CFLAGS) $(LDFLAGS) -o unit_test
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(RUN) ./unit_test
 coverage: CFLAGS += -coverage
 coverage: test
 	gcov -l -n *.gcno | sed '/^$$/d' | sed 'N;s/\n/ /'
-	gcov mongoose.gcno >/dev/null
+	gcov -t mongoose.c > mongoose.gcov
-infer:
+upload-coverage: coverage
-	infer run -- cc test/unit_test.c -c -W -Wall -Werror -Isrc -I. -O2 -DMG_ENABLE_MBEDTLS=1 -DMG_ENABLE_LINES -I/usr/local/Cellar/mbedtls/2.23.0/include  -DMG_ENABLE_IPV6=1 -g -o /dev/null
+	curl -s https://codecov.io/bash | /bin/bash
-#vc98: VCFLAGS += -DMG_ENABLE_IPV6=1
+valgrind: Makefile mongoose.h mongoose.c
-vc98: Makefile mongoose.c mongoose.h test/unit_test.c
+	$(CC) $(SRCS) $(VALGRIND_CFLAGS) $(LDFLAGS) -g -o unit_test
-	$(VC98) wine cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
+	$(VALGRIND_RUN) ./unit_test
 	$(VC98) wine $@.exe
-vc2017: CFLAGS += -DMG_ENABLE_IPV6=1
+armhf: ASAN=
-vc2017: Makefile mongoose.c mongoose.h test/unit_test.c
+armhf: IPV6=0
-	$(VC2017) wine64 cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
+armhf: CC = $(DOCKER) mdashnet/armhf cc
-	$(VC2017) wine64 $@.exe
+armhf: RUN = $(DOCKER) mdashnet/armhf
 armhf: test
-linux: CFLAGS += -DMG_ENABLE_IPV6=1 -fsanitize=address,undefined
+s390: ASAN=
-linux: Makefile mongoose.c mongoose.h test/unit_test.c
+s390: IPV6=0
-	$(GCC) $(CC) mongoose.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -o unit_test_gcc
+s390: CC = $(DOCKER) mdashnet/s390 cc
-	$(GCC) ./unit_test_gcc
+s390: RUN = $(DOCKER) mdashnet/s390
 s390: test
-linux++: CC = g++ -Wno-missing-field-initializers
+arm: DEFS += -DMG_ENABLE_FILE=0 -DMG_ENABLE_TCPIP=1 -DMG_ARCH=MG_ARCH_NEWLIB 
-linux++: linux
+arm: mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/armgcc arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb $(SRCS) $(OPTS) $(WARN) $(INCS) $(DEFS) $(TFLAGS) -o unit_test -nostartfiles --specs nosys.specs -e 0
-mongoose.c: $(SRCS) Makefile
+riscv: DEFS += -DMG_ENABLE_FILE=0 -DMG_ENABLE_TCPIP=1 -DMG_ARCH=MG_ARCH_NEWLIB 
-	(cat src/license.h; echo; echo '#include "mongoose.h"' ; (for F in src/private.h src/*.c ; do echo; echo '#ifdef MG_ENABLE_LINES'; echo "#line 1 \"$$F\""; echo '#endif'; cat $$F | sed -e 's,#include ".*,,'; done))> $@
+riscv: mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/riscv riscv-none-elf-gcc -march=rv32imc -mabi=ilp32 $(SRCS) $(OPTS) $(WARN) $(INCS) $(DEFS) $(TFLAGS) -o unit_test
 vc98: Makefile mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/vc98 wine cl $(SRCS) $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(DOCKER) mdashnet/vc98 wine $@.exe
 vc17: Makefile mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/vc17 wine64 cl $(SRCS) $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(DOCKER) mdashnet/vc17 wine64 $@.exe
 vc22: Makefile mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/vc22 wine64 cl $(SRCS) $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(DOCKER) mdashnet/vc22 wine64 $@.exe
 mingw: Makefile mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/mingw x86_64-w64-mingw32-gcc $(SRCS) -W -Wall -Werror -I. $(DEFS) -lwsock32 -o $@.exe
 	$(DOCKER) mdashnet/mingw wine64 $@.exe
 arduino: ENV = -v $(CWD)/arduino:/root
 arduino:
 	curl -sL http://downloads.arduino.cc/arduino-1.8.19-linux64.tar.xz | unxz | tar -xf -
 	mv arduino-* $@
 	$(DOCKER) mdashnet/cc2 ./arduino/arduino --pref "boardsmanager.additional.urls=https://files.seeedstudio.com/arduino/package_seeeduino_boards_index.json" --save-prefs
 	$(DOCKER) mdashnet/cc2 ./arduino/arduino --pref "compiler.warning_level=all" --save-prefs
 	$(DOCKER) mdashnet/cc2 ./arduino/arduino --install-boards Seeeduino:samd
 arduino-xiao: ENV = -v $(CWD)/arduino:/root
 arduino-xiao: arduino
 	rm -rf tmp; mkdir tmp
 	cp examples/arduino/w5500/w5500.ino tmp/tmp.ino
 	cp mongoose.c mongoose.h examples/arduino/w5500/mongoose_custom.h tmp/
 	$(DOCKER) mdashnet/cc2 ./arduino/arduino --verbose --verify --board Seeeduino:samd:seeed_XIAO_m0 tmp/tmp.ino
 mingw++: Makefile mongoose.h $(SRCS)
 	$(DOCKER) mdashnet/mingw x86_64-w64-mingw32-g++ $(SRCS) -W -Wall -Werror -I. $(DEFS) -lwsock32 -o $@.exe
 linux-libs: CFLAGS += -fPIC
 linux-libs: mongoose.o
 	$(CC) mongoose.o $(LDFLAGS) -shared -o libmongoose.so.$(VERSION)
 	$(AR) rcs libmongoose.a mongoose.o
 install: linux-libs
 	install -Dm644 libmongoose.a libmongoose.so.$(VERSION) $(DESTDIR)$(PREFIX)/lib
 	ln -s libmongoose.so.$(VERSION) $(DESTDIR)$(PREFIX)/lib/libmongoose.so
 	install -Dm644 mongoose.h $(DESTDIR)$(PREFIX)/include/mongoose.h
 uninstall:
 	rm -rf $(DESTDIR)$(PREFIX)/lib/libmongoose.a $(DESTDIR)$(PREFIX)/lib/libmongoose.so.$(VERSION) $(DESTDIR)$(PREFIX)/include/mongoose.h $(DESTDIR)$(PREFIX)/lib/libmongoose.so
 mongoose.c: Makefile $(wildcard src/*.c) $(wildcard src/tcpip/*.c)
 	(cat src/license.h; echo; echo '#include "mongoose.h"' ; (for F in src/*.c src/tcpip/*.c ; do echo; echo '#ifdef MG_ENABLE_LINES'; echo "#line 1 \"$$F\""; echo '#endif'; cat $$F | sed -e 's,#include ".*,,'; done))> $@
 mongoose.h: $(HDRS) Makefile
-	(cat src/license.h src/version.h ; cat src/arch.h src/arch_*.h src/config.h src/str.h src/log.h src/timer.h src/util.h src/url.h src/iobuf.h src/base64.h src/md5.h src/sha1.h src/event.h src/net.h src/http.h src/tls.h src/ws.h src/sntp.h src/mqtt.h src/dns.h | sed -e 's,#include ".*,,' -e 's,^#pragma once,,')> $@
+	(cat src/license.h; echo; echo '#ifndef MONGOOSE_H'; echo '#define MONGOOSE_H'; echo; cat src/version.h ; echo; echo '#ifdef __cplusplus'; echo 'extern "C" {'; echo '#endif'; cat src/arch.h src/arch_*.h src/net_*.h src/config.h src/str.h src/queue.h src/fmt.h src/printf.h src/log.h src/timer.h src/fs.h src/util.h src/url.h src/iobuf.h src/base64.h src/md5.h src/sha1.h src/event.h src/net.h src/http.h src/ssi.h src/tls.h src/tls_mbed.h src/tls_openssl.h src/ws.h src/sntp.h src/mqtt.h src/dns.h src/json.h src/rpc.h src/tcpip/tcpip.h src/tcpip/driver_*.h | sed -e '/keep/! s,#include ".*,,' -e 's,^#pragma once,,'; echo; echo '#ifdef __cplusplus'; echo '}'; echo '#endif'; echo '#endif  // MONGOOSE_H')> $@
 clean: clean_examples clean_embedded
 	rm -rf $(PROG) *.exe *.o *.dSYM *_test* ut fuzzer *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb slow-unit* _CL_* infer-out data.txt crash-* test/packed_fs.c pack arduino tmp
 	#find examples -maxdepth 3 -name zephyr -prune -o -name Makefile -print | xargs dirname | xargs -n1 make clean -C
 clean_embedded:
 	for X in $(EXAMPLES_EMBEDDED); do test -f $$X/Makefile || continue; $(MAKE) -C $$X clean || exit 1; done
 clean: EXAMPLE_TARGET = clean
 clean: ex
 	rm -rf $(PROG) *.o *.dSYM unit_test* ut fuzzer *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb slow-unit* _CL_* infer-out data.txt crash-*
@@ -1,78 +1,82 @@
 # Mongoose - Embedded Web Server / Embedded Networking Library
-![License: GPLv2](https://img.shields.io/badge/license-GPL_2-green.svg "License")
+[![License: GPLv2/Commercial](https://img.shields.io/badge/License-GPLv2%20or%20Commercial-green.svg)](https://opensource.org/licenses/gpl-2.0.php)
-[![Build Status](https://travis-ci.org/cesanta/mongoose.svg?branch=master)](https://travis-ci.org/cesanta/mongoose)
+[![Build Status]( https://github.com/cesanta/mongoose/workflows/build/badge.svg)](https://github.com/cesanta/mongoose/actions)
 [![Code Coverage](https://codecov.io/gh/cesanta/mongoose/branch/master/graph/badge.svg)](https://codecov.io/gh/cesanta/mongoose)
 [![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/mongoose.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:mongoose)
-Mongoose is a networking library for C/C++. It implements event-driven
+Mongoose is a network library for C/C++. 
-non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It has been designed
+It implements event-driven
-for connecting devices and bringing them online. On the market since 2004, used
+non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It is designed for
-by vast number of open source and commercial products - it even runs on the
+connecting devices and bringing them online. On the market since 2004, used by
 vast number of open source and commercial products - it even runs on the
 International Space Station!  Mongoose makes embedded network programming fast,
-robust, and easy.
+robust, and easy. Features include:
- [Download Mongoose Source Code here](https://www.cesanta.com/download.html)
+- Cross-platform:
- [Read Mongoose documentation](https://cesanta.com/docs/)
+  - works on Linux/UNIX, MacOS, Windows, Android
  - works on STM32, NXP, ESP32, NRF52, TI, Microchip, and other
  - write code once - and it'll work everywhere
  - ideal for the unification of the network infrastructure code across company
 - Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket
 - SSL/TLS support: mbedTLS, OpenSSL or custom (via API)
 - Asynchronous DNS resolver
 - Tiny static and run-time footprint
 - Source code is both ISO C and ISO C++ compliant
 - Very easy to integrate: just copy `mongoose.c` and `mongoose.h` files to your source tree. See
  [exact steps](https://mongoose.ws/documentation/#2-minute-integration-guide)
 - Works with any network stack with socket API, like LwIP or FreeRTOS-Plus-TCP
 - Provides a built-in TCP/IP stack with drivers for bare metal or RTOS systems
   - A complete Web device dashboard
  [bare metal example on Nucleo-F429ZI](examples/stm32/nucleo-f429zi-baremetal)
  is only 6 files
   - For comparison, a CubeIDE generated HTTP example is 400+ files
 - Detailed [user guide, API reference and tons of tutorials](https://mongoose.ws/documentation/) available
 Connectivity is vital for software and embedded devices, but there are many
 pitfalls to consider when embedding a web server.  This white paper breaks down
 on the top 9 things to avoid when embedding a web server.
- [Download “9 Things NOT to do when embedding a web server” white paper here](https://www.cesanta.com/whitepaper.html)
+# Commercial use
 - Mongoose is used by hundreds of businesses, from Fortune500 giants like
  Siemens, Schneider Electric, Broadcom, Bosch, Google, Samsung, Qualcomm, Caterpillar to the small businesses
 - Used to solve a wide range of business needs, like implementing Web UI
  interface on devices, RESTful API services, telemetry data exchange, remote
  control for a product, remote software updates, remote monitoring, and others
 - Deployed to hundreds of millions devices in production environment worldwide
 - See [Case Studies](https://mongoose.ws/case-studies/) from our respected
  customers like [Schneider Electric](https://mongoose.ws/case-studies/schneider-electric/) (industrial automation), [Broadcom](https://mongoose.ws/case-studies/broadcom/) (semiconductors), [Pilz](https://mongoose.ws/case-studies/pilz/) (industrial automation), and others
 - See [Testimonials](https://mongoose.ws/testimonials/) from engineers that integrated Mongoose in their commercial products
 - We provide [Evaluation and Commercial licensing](https://mongoose.ws/licensing/), [support](https://mongoose.ws/support/), consultancy and integration
  assistance - don't hesitate to [contact us](https://mongoose.ws/contact/)
 Looking for a complete IoT solution? Check out
 - [VCON](https://vcon.io) - Arduino compatible MCU modules with built-in firmware OTA updates
 - [Mongoose OS](https://mongoose-os.com) - open source embedded operating system for low-power connected microcontrollers. Secure, designed for commercial Internet of Things products
-# Support
+# Security
 - [Study Mongoose examples](https://github.com/cesanta/mongoose/tree/master/examples)
 - [Support Forum - ask your technical questions here](https://forum.cesanta.com/c/mongoose-library/6)
 - [Commercial licensing and support available](https://www.cesanta.com/licensing.html)
 - [Check out latest releases](https://github.com/cesanta/mongoose/releases)
-# Features
+We take security seriously:
 1. Mongoose repository runs a
  [continuous integration test powered by GitHub](https://github.com/cesanta/mongoose/actions),
  which runs through hundreds of unit tests on every commit to the repository.
  Our [unit tests](https://github.com/cesanta/mongoose/tree/master/test)
  are built with modern address sanitizer technologies, which help to find
  security vulnerabilities early
 2. Mongoose repository is integrated into Google's
  [oss-fuzz continuous fuzzer](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:mongoose)
  which scans for potential vulnerabilities continuously
 3.  We receive periodic vulnerability reports from the independent security
  groups like
  [Cisco Talos](https://www.cisco.com/c/en/us/products/security/talos.html),
  [Microsoft Security Response Center](https://www.microsoft.com/en-us/msrc),
  [MITRE Corporation](https://www.mitre.org/),
  [Compass Security](https://www.compass-security.com/en/) and others.
  In case of the vulnerability found, we act according to the industry best
  practice: hold on to the publication, fix the software and notify all our
  customers that have an appropriate subscription
 4. Some of our customers (for example NASA)
  have specific security requirements and run independent security audits,
  of which we get notified and in case of any issue, act similar to (3).
 * Cross-platform: works on Linux/UNIX, MacOS, QNX, eCos, Windows, Android,
  iPhone, FreeRTOS, etc
 * Supported hardware platforms: TI CC3200, TI MSP432, NRF52, STM32, PIC32, ESP8266, ESP32 and more
 * Builtin protocols:
   - plain TCP, plain UDP, SSL/TLS (over TCP, one-way or two-way)
   - HTTP client, HTTP server
   - WebSocket client, WebSocket server
   - MQTT client
   - DNS client, async DNS resolver
 * Single-threaded, asynchronous, non-blocking core with simple event-based API
 * Native support for [LWIP embedded TCP/IP stack](https://en.wikipedia.org/wiki/LwIP)
 * Tiny static and run-time footprint
 * Source code is both ISO C and ISO C++ compliant
 * Very easy to integrate: just copy
  [mongoose.c](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.c) and
  [mongoose.h](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.h)
  files to your build tree
 # Licensing
 Mongoose is released under Commercial and [GNU GPL v.2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) open source licenses.
 Commercial Projects: [Contact us for commercial license.](https://www.cesanta.com/contact.html)
 # Dashboard Example
 Mongoose is often used to implement device dashboards and real-time
 data exchange over Websocket. Here is a dashboard example that illustrates
 the functionality:
 ![](http://www.cesanta.com/images/dashboard.png)
 [Developing a new product? Contact us today to discuss how Mongoose can help.](https://www.cesanta.com/contact.html)
 # Contributions
 Contributions are welcome! Please follow the guidelines below:
 - Sign [Cesanta CLA](https://cesanta.com/cla.html) and send GitHub pull request
- When making pull requests, please make sure that it has only one commit,
+- Make sure that PRs have only one commit, and deal with one issue only
 and imlements/fixes only one piece of functionality
 # Looking for a pre-compiled Mongoose web server Windows or Mac binary?
 - [Download pre-compiled Mongoose web server binary.](https://www.cesanta.com/binary.html)
@@ -0,0 +1,24 @@
 # Mongoose Network Library Examples
 In order to build and run any of the existing examples, please follow:
 https://mongoose.ws/documentation/#how-to-build-and-run-examples
 ## Contributing
 Rules for creating a new example:
 - Makefile golden reference for desktop/server example: [http-server](http-server)
 - Makefile golden reference for the embedded example:
   [stm32/nucleo-f746zg-baremetal](stm32/nucleo-f746zg-baremetal)
 - An example must build on Windows, Mac and Ubuntu Linux systems
 - Assume that user installed tools according to https://mongoose.ws/tutorials/tools/
 - Makefile must not include any other make files
 - Use `CFLAGS` for system-specific compilation options
 - Use `CFLAGS_MONGOOSE` for mongoose-specific compilation options
 - Use `$(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA)` to compile
 - If external repository is required, download it on demand using git
  shallow clone. See embedded example golden reference
 - Keep Makefile as short as possible, but verbose to understand it easily
 - Symlink files when required, like `mongoose.c`, `ca.pem`, etc. Make no copies
 - Example's README.md should contain only the title and the link to mongoose.ws
  tutorial page
@@ -0,0 +1 @@
 ../../../mongoose.c
@@ -0,0 +1 @@
 ../../../mongoose.h
@@ -0,0 +1,14 @@
 #pragma once
 #include "Arduino.h"
 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <time.h>
 #define MG_ARCH MG_ARCH_CUSTOM
 #define MG_ENABLE_SOCKET 0
 #define MG_ENABLE_TCPIP 1
 #define mkdir(a, b) (-1)
 //#define MG_ENABLE_LOG 0
@@ -0,0 +1,49 @@
 #include <SPI.h>
 #include "mongoose.h"
 #define SS_PIN 3    // Slave select pin
 struct mg_mgr mgr;  // Mongoose event manager
 struct mg_tcpip_spi spi = {
    NULL,                                               // SPI data
    [](void *) { digitalWrite(SS_PIN, LOW); },          // begin transation
    [](void *) { digitalWrite(SS_PIN, HIGH); },         // end transaction
    [](void *, uint8_t c) { return SPI.transfer(c); },  // execute transaction
 };
 struct mg_tcpip_if mif = {.mac = {2, 0, 1, 2, 3, 5}};  // network interface
 void setup() {
  Serial.begin(115200);
  pinMode(SS_PIN, OUTPUT);
  SPI.begin();
  // Set logging function to a serial print
  mg_log_set_fn([](char ch, void *) { Serial.print(ch); }, NULL);
  mg_mgr_init(&mgr);
  delay(3000);
  MG_INFO(("Starting TCP/IP stack..."));
  mif.driver = &mg_tcpip_driver_w5500;
  mif.driver_data = &spi;
  mg_tcpip_init(&mgr, &mif);
  // Start a 5 sec timer, print status message periodically
  mg_timer_add(
      &mgr, 5000, MG_TIMER_REPEAT,
      [](void *) {
        MG_INFO(("ethernet: %s", mg_tcpip_driver_w5500.up(&mif) ? "up" : "down"));
      },
      NULL);
  // Setup HTTP listener. Respond "ok" on any HTTP request
  mg_http_listen(
      &mgr, "http://0.0.0.0",
      [](struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
        if (ev == MG_EV_HTTP_MSG) mg_http_reply(c, 200, "", "ok\n");
      },
      &mgr);
 }
 void loop() {
  mg_mgr_poll(&mgr, 1);
 }
@@ -0,0 +1,25 @@
 PROG ?= example                   # Program we are building
 DELETE = rm -rf                   # Command to remove files
 OUT ?= -o $(PROG)                 # Compiler argument for output file
 SOURCES = main.c mongoose.c       # Source code files
 CFLAGS = -W -Wall -Wextra -g -I.  # Build options
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
 CFLAGS_MONGOOSE += -DMG_IO_SIZE=8192 -DMG_ENABLE_LINES
 ifeq ($(OS),Windows_NT)   # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD OUT=/Feprog.exe
  PROG ?= example.exe           # Use .exe suffix for the binary
  CC = gcc                      # Use MinGW gcc compiler
  CFLAGS += -lws2_32            # Link against Winsock library
  DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
  OUT ?= -o $(PROG)             # Build output
 endif
 all: $(PROG)              # Default target. Build and run program
 	$(RUN) ./$(PROG) $(ARGS)
 $(PROG): $(SOURCES)       # Build program from sources
 	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) $(OUT)
 clean:                    # Cleanup. Delete built program and all build artifacts
 	$(DELETE) $(PROG) *.o *.obj *.exe *.dSYM
@@ -0,0 +1 @@
 See detailed tutorial at https://mongoose.ws/tutorials/captive-dns-server/
@@ -0,0 +1,58 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 //
 // Example captive DNS server (captive portal).
 //    1. Run `make`. This builds and starts a server on port 5533
 //    2. Run `dig -t A www.google.com -4 @localhost -p 5533`
 #include "mongoose.h"
 static const char *s_listen_url = "udp://0.0.0.0:5533";
 // DNS answer section. We response with IP 1.2.3.4 - you can change it
 //  in the last 4 bytes of this array
 uint8_t answer[] = {
    0xc0, 0x0c,          // Point to the name in the DNS question
    0,    1,             // 2 bytes - record type, A
    0,    1,             // 2 bytes - address class, INET
    0,    0,    0, 120,  // 4 bytes - TTL
    0,    4,             // 2 bytes - address length
    1,    2,    3, 4     // 4 bytes - IP address
 };
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_OPEN) {
    c->is_hexdumping = 1;
  } else if (ev == MG_EV_READ) {
    struct mg_dns_rr rr;  // Parse first question, offset 12 is header size
    size_t n = mg_dns_parse_rr(c->recv.buf, c->recv.len, 12, true, &rr);
    MG_INFO(("DNS request parsed, result=%d", (int) n));
    if (n > 0) {
      char buf[512];
      struct mg_dns_header *h = (struct mg_dns_header *) buf;
      memset(buf, 0, sizeof(buf));  // Clear the whole datagram
      h->txnid = ((struct mg_dns_header *) c->recv.buf)->txnid;  // Copy tnxid
      h->num_questions = mg_htons(1);  // We use only the 1st question
      h->num_answers = mg_htons(1);    // And only one answer
      h->flags = mg_htons(0x8400);     // Authoritative response
      memcpy(buf + sizeof(*h), c->recv.buf + sizeof(*h), n);  // Copy question
      memcpy(buf + sizeof(*h) + n, answer, sizeof(answer));   // And answer
      mg_send(c, buf, 12 + n + sizeof(answer));               // And send it!
    }
    mg_iobuf_del(&c->recv, 0, c->recv.len);
  }
  (void) fn_data;
  (void) ev_data;
 }
 int main(void) {
  struct mg_mgr mgr;
  mg_log_set(MG_LL_DEBUG);                  // Set log level
  mg_mgr_init(&mgr);                        // Initialise event manager
  mg_listen(&mgr, s_listen_url, fn, NULL);  // Start DNS server
  for (;;) mg_mgr_poll(&mgr, 1000);         // Event loop
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1 @@
 ../../mongoose.c
@@ -0,0 +1 @@
 ../../mongoose.h
@@ -1,10 +0,0 @@
 PROG ?= example
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c mjson.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt
@@ -1,203 +0,0 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mjson.h"
 #include "mongoose.h"
 // Authenticated user.
 // A user can be authenticated by:
 //   - a name:pass pair
 //   - a token
 // When a user is shown a login screen, she enters a user:pass. If successful,
 // a server returns user info which includes token. From that point on,
 // client can use token for authentication. Tokens could be refreshed/changed
 // on a server side, forcing clients to re-login.
 struct user {
  const char *name, *pass, *token;
 };
 // This is a configuration structure we're going to show on a dashboard
 static struct config {
  int value1;
  char *value2;
 } s_config = {123, NULL};
 // Stringifies the config. A caller must free() it.
 static char *stringify_config(struct config *cfg) {
  char *s = NULL;
  mjson_printf(mjson_print_dynamic_buf, &s, "{%Q:%d,%Q:%Q}", "value1",
               cfg->value1, "value2", cfg->value2);
  return s;
 }
 // Update config structure. Return true if changed, false otherwise
 static bool update_config(struct mg_http_message *hm, struct config *cfg) {
  bool changed = false;
  char buf[256];
  double dv;
  if (mjson_get_number(hm->body.ptr, hm->body.len, "$.value1", &dv)) {
    s_config.value1 = dv;
    changed = true;
  }
  if (mjson_get_string(hm->body.ptr, hm->body.len, "$.value2", buf,
                       sizeof(buf)) > 0) {
    free(s_config.value2);
    s_config.value2 = strdup(buf);
    changed = true;
  }
  return changed;
 }
 // Parse HTTP requests, return authenticated user or NULL
 static struct user *getuser(struct mg_http_message *hm) {
  // In production, make passwords strong and tokens randomly generated
  // In this example, user list is kept in RAM. In production, it can
  // be backed by file, database, or some other method.
  static struct user users[] = {
      {"admin", "admin", "admin_token"},
      {"user1", "pass1", "user1_token"},
      {"user2", "pass2", "user2_token"},
      {NULL, NULL, NULL},
  };
  char user[256], pass[256];
  struct user *u;
  mg_http_creds(hm, user, sizeof(user), pass, sizeof(pass));
  if (user[0] != '\0' && pass[0] != '\0') {
    // Both user and password is set, search by user/password
    for (u = users; u->name != NULL; u++)
      if (strcmp(user, u->name) == 0 && strcmp(pass, u->pass) == 0) return u;
  } else if (user[0] == '\0') {
    // Only password is set, search by token
    for (u = users; u->name != NULL; u++)
      if (strcmp(pass, u->token) == 0) return u;
  }
  return NULL;
 }
 // Notify all config watchers about the config change
 static void notify_config_change(struct mg_mgr *mgr) {
  struct mg_connection *c;
  char *s = stringify_config(&s_config);
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'W') mg_http_printf_chunk(c, "%s\n", s);
  }
  free(s);
 }
 // HTTP request handler function
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    struct user *u = getuser(hm);
    // LOG(LL_INFO, ("%p [%.*s] auth %s", c->fd, (int) hm->uri.len, hm->uri.ptr,
    // u ? u->name : "NULL"));
    if (u == NULL && mg_http_match_uri(hm, "/api/#")) {
      // All URIs starting with /api/ must be authenticated
      mg_printf(c, "%s", "HTTP/1.1 403 Denied\r\nContent-Length: 0\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/config/get")) {
      char *s = stringify_config(&s_config);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s\n",
                (int) strlen(s) + 1, s);
      free(s);
    } else if (mg_http_match_uri(hm, "/api/config/set")) {
      // Admins only
      if (strcmp(u->name, "admin") == 0) {
        if (update_config(hm, &s_config)) notify_config_change(fn_data);
        mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
      } else {
        mg_printf(c, "%s", "HTTP/1.1 403 Denied\r\nContent-Length: 0\r\n\r\n");
      }
    } else if (mg_http_match_uri(hm, "/api/config/watch")) {
      c->label[0] = 'W';  // Mark ourselves as a config watcher
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/video1")) {
      c->label[0] = 'S';  // Mark that connection as live streamer
      mg_printf(
          c, "%s",
          "HTTP/1.0 200 OK\r\n"
          "Cache-Control: no-cache\r\n"
          "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
          "Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/log/static")) {
      mg_http_serve_file(c, hm, "log.txt", "text/plain");
    } else if (mg_http_match_uri(hm, "/api/log/live")) {
      c->label[0] = 'L';  // Mark that connection as live log listener
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/login")) {
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
      mg_http_printf_chunk(c, "{\"user\":\"%s\",\"token\":\"%s\"}\n", u->name,
                           u->token);
      mg_http_printf_chunk(c, "");
    } else {
      mg_http_serve_dir(c, ev_data, "web_root");
    }
  }
 }
 // The image stream is simulated by sending MJPEG frames specified by the
 // "files" array of file names.
 static void broadcast_mjpeg_frame(struct mg_mgr *mgr) {
  const char *files[] = {"images/1.jpg", "images/2.jpg", "images/3.jpg",
                         "images/4.jpg", "images/5.jpg", "images/6.jpg"};
  size_t nfiles = sizeof(files) / sizeof(files[0]);
  static size_t i;
  const char *path = files[i++ % nfiles];
  size_t size = mg_file_size(path);
  char *data = mg_file_read(path);  // Read next file
  struct mg_connection *c;
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] != 'S') continue;      // Skip non-stream connections
    if (data == NULL || size == 0) continue;  // Skip on file read error
    mg_printf(c,
              "--foo\r\nContent-Type: image/jpeg\r\n"
              "Content-Length: %lu\r\n\r\n",
              (unsigned long) size);
    mg_send(c, data, size);
    mg_send(c, "\r\n", 2);
  }
  free(data);
 }
 static void mjpeg_cb(void *arg) {
  broadcast_mjpeg_frame(arg);
 }
 static void log_message(const char *filename, const char *message) {
  FILE *fp = fopen(filename, "a");
  if (fp != NULL) {
    fprintf(fp, "%s", message);
    fclose(fp);
  }
 }
 static void broadcast_message(struct mg_mgr *mgr, const char *message) {
  struct mg_connection *c;
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'L') mg_http_printf_chunk(c, "%s", message);
  }
 }
 // Timer function - called periodically.
 // Prepare log message. Save it to a file, and broadcast.
 static void log_cb(void *arg) {
  char buf[64];
  snprintf(buf, sizeof(buf), "Time is: %lu\n", (unsigned long) time(NULL));
  log_message("log.txt", buf);
  broadcast_message(arg, buf);
 }
 int main(void) {
  struct mg_mgr mgr;
  struct mg_timer t1, t2;
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, "http://localhost:8000", cb, &mgr);
  mg_timer_init(&t1, 500, MG_TIMER_REPEAT, mjpeg_cb, &mgr);
  mg_timer_init(&t2, 1000, MG_TIMER_REPEAT, log_cb, &mgr);
  for (;;) mg_mgr_poll(&mgr, 50);
  mg_timer_free(&t1);
  mg_timer_free(&t2);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -1,981 +0,0 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #include "mjson.h"
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
 #else
 #define va_copy(x, y) (x) = (y)
 #define snprintf _snprintf
 #define alloca _alloca
 #endif
 static int mjson_esc(int c, int esc) {
  const char *p, *esc1 = "\b\f\n\r\t\\\"", *esc2 = "bfnrt\\\"";
  for (p = esc ? esc1 : esc2; *p != '\0'; p++) {
    if (*p == c) return esc ? esc2[p - esc1] : esc1[p - esc2];
  }
  return 0;
 }
 static int mjson_pass_string(const char *s, int len) {
  int i;
  for (i = 0; i < len; i++) {
    if (s[i] == '\\' && i + 1 < len && mjson_esc(s[i + 1], 1)) {
      i++;
    } else if (s[i] == '\0') {
      return MJSON_ERROR_INVALID_INPUT;
    } else if (s[i] == '"') {
      return i;
    }
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud) {
  enum { S_VALUE, S_KEY, S_COLON, S_COMMA_OR_EOO } expecting = S_VALUE;
  unsigned char nesting[MJSON_MAX_DEPTH];
  int i, depth = 0;
 #define MJSONCALL(ev) \
  if (cb != NULL && cb(ev, s, start, i - start + 1, ud)) return i + 1;
 // In the ascii table, the distance between `[` and `]` is 2.
 // Ditto for `{` and `}`. Hence +2 in the code below.
 #define MJSONEOO()                                                     \
  do {                                                                 \
    if (c != nesting[depth - 1] + 2) return MJSON_ERROR_INVALID_INPUT; \
    depth--;                                                           \
    if (depth == 0) {                                                  \
      MJSONCALL(tok);                                                  \
      return i + 1;                                                    \
    }                                                                  \
  } while (0)
  for (i = 0; i < len; i++) {
    int start = i;
    unsigned char c = ((unsigned char *) s)[i];
    int tok = c;
    if (c == ' ' || c == '\t' || c == '\n' || c == '\r') continue;
    // printf("- %c [%.*s] %d %d\n", c, i, s, depth, expecting);
    switch (expecting) {
      case S_VALUE:
        if (c == '{') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          expecting = S_KEY;
          break;
        } else if (c == '[') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          break;
        } else if (c == ']' && depth > 0) {  // Empty array
          MJSONEOO();
        } else if (c == 't' && i + 3 < len && memcmp(&s[i], "true", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_TRUE;
        } else if (c == 'n' && i + 3 < len && memcmp(&s[i], "null", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_NULL;
        } else if (c == 'f' && i + 4 < len && memcmp(&s[i], "false", 5) == 0) {
          i += 4;
          tok = MJSON_TOK_FALSE;
        } else if (c == '-' || ((c >= '0' && c <= '9'))) {
          char *end = NULL;
          strtod(&s[i], &end);
          if (end != NULL) i += end - &s[i] - 1;
          tok = MJSON_TOK_NUMBER;
        } else if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_STRING;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        if (depth == 0) {
          MJSONCALL(tok);
          return i + 1;
        }
        expecting = S_COMMA_OR_EOO;
        break;
      case S_KEY:
        if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_KEY;
          expecting = S_COLON;
        } else if (c == '}') {  // Empty object
          MJSONEOO();
          expecting = S_COMMA_OR_EOO;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COLON:
        if (c == ':') {
          expecting = S_VALUE;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COMMA_OR_EOO:
        if (depth <= 0) return MJSON_ERROR_INVALID_INPUT;
        if (c == ',') {
          expecting = (nesting[depth - 1] == '{') ? S_KEY : S_VALUE;
        } else if (c == ']' || c == '}') {
          MJSONEOO();
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
    }
    MJSONCALL(tok);
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 struct msjon_get_data {
  const char *path;     // Lookup json path
  int pos;              // Current path index
  int d1;               // Current depth of traversal
  int d2;               // Expected depth of traversal
  int i1;               // Index in an array
  int i2;               // Expected index in an array
  int obj;              // If the value is array/object, offset where it starts
  const char **tokptr;  // Destination
  int *toklen;          // Destination length
  int tok;              // Returned token
 };
 static int mjson_plen(const char *s) {
  int i = 0;
  while (s[i] != '\0' && s[i] != '.' && s[i] != '[') i++;
  return i;
 }
 static int mjson_get_cb(int tok, const char *s, int off, int len, void *ud) {
  struct msjon_get_data *data = (struct msjon_get_data *) ud;
  // printf("--> %2x %2d %2d %2d %2d\t'%s'\t'%.*s'\t\t'%.*s'\n", tok, data->d1,
  // data->d2, data->i1, data->i2, data->path + data->pos, off, s, len,
  // s + off);
  if (data->tok != MJSON_TOK_INVALID) return 1;  // Found
  if (tok == '{') {
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == '[') {
    if (data->d1 == data->d2 && data->path[data->pos] == '[') {
      data->i1 = 0;
      data->i2 = (int) strtod(&data->path[data->pos + 1], NULL);
      if (data->i1 == data->i2) {
        data->d2++;
        data->pos += 3;
      }
    }
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == ',') {
    if (data->d1 == data->d2 + 1) {
      data->i1++;
      if (data->i1 == data->i2) {
        while (data->path[data->pos] != ']') data->pos++;
        data->pos++;
        data->d2++;
      }
    }
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2 + 1 &&
             data->path[data->pos] == '.' && s[off] == '"' &&
             s[off + len - 1] == '"' &&
             mjson_plen(&data->path[data->pos + 1]) == len - 2 &&
             !memcmp(s + off + 1, &data->path[data->pos + 1], len - 2)) {
    data->d2++;
    data->pos += len - 1;
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2) {
    return 1;  // Exhausted path, not found
  } else if (tok == '}' || tok == ']') {
    data->d1--;
    // data->d2--;
    if (!data->path[data->pos] && data->d1 == data->d2 && data->obj != -1) {
      data->tok = tok - 2;
      if (data->tokptr) *data->tokptr = s + data->obj;
      if (data->toklen) *data->toklen = off - data->obj + 1;
      return 1;
    }
  } else if (MJSON_TOK_IS_VALUE(tok)) {
    // printf("TOK --> %d\n", tok);
    if (data->d1 == data->d2 && !data->path[data->pos]) {
      data->tok = tok;
      if (data->tokptr) *data->tokptr = s + off;
      if (data->toklen) *data->toklen = len;
      return 1;
    }
  }
  return 0;
 }
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen) {
  struct msjon_get_data data = {jp, 1,  0,      0,      0,
                                0,  -1, tokptr, toklen, MJSON_TOK_INVALID};
  if (jp[0] != '$') return MJSON_TOK_INVALID;
  if (mjson(s, len, mjson_get_cb, &data) < 0) return MJSON_TOK_INVALID;
  return (enum mjson_tok) data.tok;
 }
 int mjson_get_number(const char *s, int len, const char *path, double *v) {
  const char *p;
  int tok, n;
  if ((tok = mjson_find(s, len, path, &p, &n)) == MJSON_TOK_NUMBER) {
    if (v != NULL) *v = strtod(p, NULL);
  }
  return tok == MJSON_TOK_NUMBER ? 1 : 0;
 }
 int mjson_get_bool(const char *s, int len, const char *path, int *v) {
  int tok = mjson_find(s, len, path, NULL, NULL);
  if (tok == MJSON_TOK_TRUE && v != NULL) *v = 1;
  if (tok == MJSON_TOK_FALSE && v != NULL) *v = 0;
  return tok == MJSON_TOK_TRUE || tok == MJSON_TOK_FALSE ? 1 : 0;
 }
 static int mjson_unescape(const char *s, int len, char *to, int n) {
  int i, j;
  for (i = 0, j = 0; i < len && j < n; i++, j++) {
    if (s[i] == '\\' && i + 1 < len) {
      int c = mjson_esc(s[i + 1], 0);
      if (c == 0) return -1;
      to[j] = c;
      i++;
    } else {
      to[j] = s[i];
    }
  }
  if (j >= n) return -1;
  if (n > 0) to[j] = '\0';
  return j;
 }
 int mjson_get_string(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return -1;
  return mjson_unescape(p + 1, sz - 2, to, n);
 }
 int mjson_get_hex(const char *s, int len, const char *x, char *to, int n) {
  const char *p;
  int i, j, sz;
  if (mjson_find(s, len, x, &p, &sz) != MJSON_TOK_STRING) return -1;
  for (i = j = 0; i < sz - 3 && j < n; i += 2, j++) {
 #define HEXTOI(x) (x >= '0' && x <= '9' ? x - '0' : x - 'W')
    unsigned char a = *(const unsigned char *) (p + i + 1);
    unsigned char b = *(const unsigned char *) (p + i + 2);
    ((unsigned char *) to)[j] = (HEXTOI(a) << 4) | HEXTOI(b);
  }
  if (j < n) to[j] = '\0';
  return j;
 }
 #if MJSON_ENABLE_BASE64
 static int mjson_base64rev(int c) {
  if (c >= 'A' && c <= 'Z') {
    return c - 'A';
  } else if (c >= 'a' && c <= 'z') {
    return c + 26 - 'a';
  } else if (c >= '0' && c <= '9') {
    return c + 52 - '0';
  } else if (c == '+') {
    return 62;
  } else if (c == '/') {
    return 63;
  } else {
    return 64;
  }
 }
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen) {
  const char *end = src + n;
  int len = 0;
  while (src + 3 < end && len < dlen) {
    int a = mjson_base64rev(src[0]), b = mjson_base64rev(src[1]),
        c = mjson_base64rev(src[2]), d = mjson_base64rev(src[3]);
    dst[len++] = (a << 2) | (b >> 4);
    if (src[2] != '=' && len < dlen) {
      dst[len++] = (b << 4) | (c >> 2);
      if (src[3] != '=' && len < dlen) {
        dst[len++] = (c << 6) | d;
      }
    }
    src += 4;
  }
  if (len < dlen) dst[len] = '\0';
  return len;
 }
 int mjson_get_base64(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return 0;
  return mjson_base64_dec(p + 1, sz - 2, to, n);
 }
 #endif  // MJSON_ENABLE_BASE64
 #if MJSON_ENABLE_NEXT
 struct nextdata {
  int off, len, depth, t, vo, arrayindex;
  int *koff, *klen, *voff, *vlen, *vtype;
 };
 static int next_cb(int tok, const char *s, int off, int len, void *ud) {
  struct nextdata *d = (struct nextdata *) ud;
  // int i;
  switch (tok) {
    case '{':
    case '[':
      if (d->depth == 0 && tok == '[') d->arrayindex = 0;
      if (d->depth == 1 && off > d->off) {
        d->vo = off;
        d->t = tok == '{' ? MJSON_TOK_OBJECT : MJSON_TOK_ARRAY;
        if (d->voff) *d->voff = off;
        if (d->vtype) *d->vtype = d->t;
      }
      d->depth++;
      break;
    case '}':
    case ']':
      d->depth--;
      if (d->depth == 1 && d->vo) {
        d->len = off + len;
        if (d->vlen) *d->vlen = d->len - d->vo;
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->depth == 1 && d->arrayindex >= 0) d->arrayindex++;
      break;
    case ',':
    case ':':
      break;
    case MJSON_TOK_KEY:
      if (d->depth == 1 && d->off < off) {
        if (d->koff) *d->koff = off;  // And report back to the user
        if (d->klen) *d->klen = len;  // If we have to
      }
      break;
    default:
      if (d->depth != 1) break;
      // If we're iterating over the array
      if (off > d->off) {
        d->len = off + len;
        if (d->vlen) *d->vlen = len;    // value length
        if (d->voff) *d->voff = off;    // value offset
        if (d->vtype) *d->vtype = tok;  // value type
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->arrayindex >= 0) d->arrayindex++;
      break;
  }
  (void) s;
  return 0;
 }
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype) {
  struct nextdata d = {off, 0, 0, 0, 0, -1, koff, klen, voff, vlen, vtype};
  mjson(s, n, next_cb, &d);
  return d.len;
 }
 #endif
 #if MJSON_ENABLE_PRINT
 int mjson_print_fixed_buf(const char *ptr, int len, void *fndata) {
  struct mjson_fixedbuf *fb = (struct mjson_fixedbuf *) fndata;
  int i, left = fb->size - 1 - fb->len;
  if (left < len) len = left;
  for (i = 0; i < len; i++) fb->ptr[fb->len + i] = ptr[i];
  fb->len += len;
  fb->ptr[fb->len] = '\0';
  return len;
 }
 int mjson_print_dynamic_buf(const char *ptr, int len, void *fndata) {
  char *s, *buf = *(char **) fndata;
  int curlen = buf == NULL ? 0 : strlen(buf);
  if ((s = (char *) realloc(buf, curlen + len + 1)) == NULL) {
    return 0;
  } else {
    memcpy(s + curlen, ptr, len);
    s[curlen + len] = '\0';
    *(char **) fndata = s;
    return len;
  }
 }
 int mjson_print_null(const char *ptr, int len, void *userdata) {
  (void) ptr;
  (void) userdata;
  return len;
 }
 int mjson_print_file(const char *ptr, int len, void *userdata) {
  return fwrite(ptr, 1, len, (FILE *) userdata);
 }
 int mjson_print_buf(mjson_print_fn_t fn, void *fndata, const char *buf,
                    int len) {
  return fn(buf, len, fndata);
 }
 int mjson_print_int(mjson_print_fn_t fn, void *fndata, int value,
                    int is_signed) {
  char buf[20];
  int len = snprintf(buf, sizeof(buf), is_signed ? "%d" : "%u", value);
  return fn(buf, len, fndata);
 }
 int mjson_print_long(mjson_print_fn_t fn, void *fndata, long value,
                     int is_signed) {
  char buf[20];
  const char *fmt = (is_signed ? "%ld" : "%lu");
  int len = snprintf(buf, sizeof(buf), fmt, value);
  return fn(buf, len, fndata);
 }
 int mjson_print_dbl(mjson_print_fn_t fn, void *fndata, double d,
                    const char *fmt) {
  char buf[40];
  int n = snprintf(buf, sizeof(buf), fmt, d);
  return fn(buf, n, fndata);
 }
 int mjson_print_str(mjson_print_fn_t fn, void *fndata, const char *s, int len) {
  int i, n = fn("\"", 1, fndata);
  for (i = 0; i < len; i++) {
    char c = mjson_esc(s[i], 1);
    if (c) {
      n += fn("\\", 1, fndata);
      n += fn(&c, 1, fndata);
    } else {
      n += fn(&s[i], 1, fndata);
    }
  }
  return n + fn("\"", 1, fndata);
 }
 #if MJSON_ENABLE_BASE64
 int mjson_print_b64(mjson_print_fn_t fn, void *fndata, const unsigned char *s,
                    int n) {
  const char *t =
      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  int i, len = fn("\"", 1, fndata);
  for (i = 0; i < n; i += 3) {
    int a = s[i], b = i + 1 < n ? s[i + 1] : 0, c = i + 2 < n ? s[i + 2] : 0;
    char buf[4] = {t[a >> 2], t[(a & 3) << 4 | (b >> 4)], '=', '='};
    if (i + 1 < n) buf[2] = t[(b & 15) << 2 | (c >> 6)];
    if (i + 2 < n) buf[3] = t[c & 63];
    len += fn(buf, sizeof(buf), fndata);
  }
  return len + fn("\"", 1, fndata);
 }
 #endif /* MJSON_ENABLE_BASE64 */
 int mjson_vprintf(mjson_print_fn_t fn, void *fndata, const char *fmt,
                  va_list xap) {
  int i = 0, n = 0;
  va_list ap;
  va_copy(ap, xap);
  while (fmt[i] != '\0') {
    if (fmt[i] == '%') {
      char fc = fmt[++i];
      int is_long = 0;
      if (fc == 'l') {
        is_long = 1;
        fc = fmt[i + 1];
      }
      if (fc == 'Q') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf ? buf : "", buf ? strlen(buf) : 0);
      } else if (strncmp(&fmt[i], ".*Q", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'd' || fc == 'u') {
        int is_signed = (fc == 'd');
        if (is_long) {
          long val = va_arg(ap, long);
          n += mjson_print_long(fn, fndata, val, is_signed);
          i++;
        } else {
          int val = va_arg(ap, int);
          n += mjson_print_int(fn, fndata, val, is_signed);
        }
      } else if (fc == 'B') {
        const char *s = va_arg(ap, int) ? "true" : "false";
        n += mjson_print_buf(fn, fndata, s, strlen(s));
      } else if (fc == 's') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, strlen(buf));
      } else if (strncmp(&fmt[i], ".*s", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'g') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%g");
      } else if (fc == 'f') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%f");
 #if MJSON_ENABLE_BASE64
      } else if (fc == 'V') {
        int len = va_arg(ap, int);
        const char *buf = va_arg(ap, const char *);
        n += mjson_print_b64(fn, fndata, (unsigned char *) buf, len);
 #endif
      } else if (fc == 'H') {
        const char *hex = "0123456789abcdef";
        int i, len = va_arg(ap, int);
        const unsigned char *p = va_arg(ap, const unsigned char *);
        n += fn("\"", 1, fndata);
        for (i = 0; i < len; i++) {
          n += fn(&hex[(p[i] >> 4) & 15], 1, fndata);
          n += fn(&hex[p[i] & 15], 1, fndata);
        }
        n += fn("\"", 1, fndata);
      } else if (fc == 'M') {
        mjson_vprint_fn_t vfn = va_arg(ap, mjson_vprint_fn_t);
        n += vfn(fn, fndata, &ap);
      }
      i++;
    } else {
      n += mjson_print_buf(fn, fndata, &fmt[i++], 1);
    }
  }
  va_end(xap);
  va_end(ap);
  return n;
 }
 int mjson_printf(mjson_print_fn_t fn, void *fndata, const char *fmt, ...) {
  va_list ap;
  int len;
  va_start(ap, fmt);
  len = mjson_vprintf(fn, fndata, fmt, ap);
  va_end(ap);
  return len;
 }
 #endif /* MJSON_ENABLE_PRINT */
 #if MJSON_IMPLEMENT_STRTOD
 static inline int is_digit(int c) {
  return c >= '0' && c <= '9';
 }
 /* NOTE: strtod() implementation by Yasuhiro Matsumoto. */
 double strtod(const char *str, char **end) {
  double d = 0.0;
  int sign = 1, n = 0;
  const char *p = str, *a = str;
  /* decimal part */
  if (*p == '-') {
    sign = -1;
    ++p;
  } else if (*p == '+')
    ++p;
  if (is_digit(*p)) {
    d = (double) (*p++ - '0');
    while (*p && is_digit(*p)) {
      d = d * 10.0 + (double) (*p - '0');
      ++p;
      ++n;
    }
    a = p;
  } else if (*p != '.')
    goto done;
  d *= sign;
  /* fraction part */
  if (*p == '.') {
    double f = 0.0;
    double base = 0.1;
    ++p;
    if (is_digit(*p)) {
      while (*p && is_digit(*p)) {
        f += base * (*p - '0');
        base /= 10.0;
        ++p;
        ++n;
      }
    }
    d += f * sign;
    a = p;
  }
  /* exponential part */
  if ((*p == 'E') || (*p == 'e')) {
    int e = 0;
    ++p;
    sign = 1;
    if (*p == '-') {
      sign = -1;
      ++p;
    } else if (*p == '+')
      ++p;
    if (is_digit(*p)) {
      while (*p == '0') ++p;
      e = (int) (*p++ - '0');
      while (*p && is_digit(*p)) {
        e = e * 10 + (int) (*p - '0');
        ++p;
      }
      e *= sign;
    } else if (!is_digit(*(a - 1))) {
      a = str;
      goto done;
    } else if (*p == 0)
      goto done;
    if (d == 2.2250738585072011 && e == -308) {
      d = 0.0;
      a = p;
      goto done;
    }
    if (d == 2.2250738585072012 && e <= -308) {
      d *= 1.0e-308;
      a = p;
      goto done;
    }
    {
      int i;
      for (i = 0; i < 10; i++) d *= 10;
    }
    a = p;
  } else if (p > str && !is_digit(*(p - 1))) {
    a = str;
    goto done;
  }
 done:
  if (end) *end = (char *) a;
  return d;
 }
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *s, int n, const char *s2, int n2,
                mjson_print_fn_t fn, void *userdata) {
  int koff, klen, voff, vlen, t, t2, k, off = 0, len = 0, comma = 0;
  if (n < 2) return len;
  len += fn("{", 1, userdata);
  while ((off = mjson_next(s, n, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s + koff + 1, klen - 2);
    path[klen] = '\0';
    if ((t2 = mjson_find(s2, n2, path, &val, &k)) != MJSON_TOK_INVALID) {
      if (t2 == MJSON_TOK_NULL) continue;  // null deletes the key
    } else {
      val = s + voff;  // Key is not found in the update. Copy the old value.
    }
    if (comma) len += fn(",", 1, userdata);
    len += fn(s + koff, klen, userdata);
    len += fn(":", 1, userdata);
    if (t == MJSON_TOK_OBJECT && t2 == MJSON_TOK_OBJECT) {
      len += mjson_merge(s + voff, vlen, val, k, fn, userdata);
    } else {
      if (t2 != MJSON_TOK_INVALID) vlen = k;
      len += fn(val, vlen, userdata);
    }
    comma = 1;
  }
  // Add missing keys
  off = 0;
  while ((off = mjson_next(s2, n2, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    if (t == MJSON_TOK_NULL) continue;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s2 + koff + 1, klen - 2);
    path[klen] = '\0';
    if (mjson_find(s, n, path, &val, &vlen) != MJSON_TOK_INVALID) continue;
    if (comma) len += fn(",", 1, userdata);
    len += fn(s2 + koff, klen, userdata);
    len += fn(":", 1, userdata);
    len += fn(s2 + voff, vlen, userdata);
    comma = 1;
  }
  len += fn("}", 1, userdata);
  return len;
 }
 #endif  // MJSON_ENABLE_MERGE
 #if MJSON_ENABLE_PRETTY
 struct prettydata {
  int level;
  int len;
  int prev;
  const char *pad;
  int padlen;
  mjson_print_fn_t fn;
  void *userdata;
 };
 static int pretty_cb(int ev, const char *s, int off, int len, void *ud) {
  struct prettydata *d = (struct prettydata *) ud;
  int i;
  switch (ev) {
    case '{':
    case '[':
      d->level++;
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case '}':
    case ']':
      d->level--;
      if (d->prev != '[' && d->prev != '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case ',':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      break;
    case ':':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) d->len += d->fn(" ", 1, d->userdata);
      break;
    case MJSON_TOK_KEY:
      if (d->prev == '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    default:
      if (d->prev == '[' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
  }
  d->prev = ev;
  return 0;
 }
 int mjson_pretty(const char *s, int n, const char *pad, mjson_print_fn_t fn,
                 void *userdata) {
  struct prettydata d = {0, 0, 0, pad, strlen(pad), fn, userdata};
  if (mjson(s, n, pretty_cb, &d) < 0) return -1;
  return d.len;
 }
 #endif  // MJSON_ENABLE_PRETTY
 #if MJSON_ENABLE_RPC
 struct jsonrpc_ctx jsonrpc_default_context;
 struct jsonrpc_userdata {
  mjson_print_fn_t fn;
  void *fndata;
 };
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2) {
  int i = 0, j = 0, ni = 0, nj = 0;
  while (i < n1 || j < n2) {
    if (i < n1 && j < n2 && (s1[i] == '?' || s2[j] == s1[i])) {
      i++, j++;
    } else if (i < n1 && (s1[i] == '*' || s1[i] == '#')) {
      ni = i, nj = j + 1, i++;
    } else if (nj > 0 && nj <= n2 && (s1[i - 1] == '#' || s2[j] != '/')) {
      i = ni, j = nj;
    } else {
      return 0;
    }
  }
  return 1;
 }
 static int jsonrpc_printer(const char *buf, int len, void *userdata) {
  struct jsonrpc_userdata *u = (struct jsonrpc_userdata *) userdata;
  return u->fn(buf, len, u->fndata);
 }
 void jsonrpc_return_errorv(struct jsonrpc_request *r, int code,
                           const char *message, const char *data_fmt,
                           va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata,
               "{\"id\":%.*s,\"error\":{\"code\":%d,\"message\":%Q", r->id_len,
               r->id, code, message == NULL ? "" : message);
  if (data_fmt != NULL) {
  	mjson_printf(r->fn, r->fndata, ",\"data\":");
    mjson_vprintf(r->fn, r->fndata, data_fmt, ap);
  }
  mjson_printf(r->fn, r->fndata, "}}\n");
 }
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...) {
  va_list ap;
  va_start(ap, data_fmt);
  jsonrpc_return_errorv(r, code, message, data_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_return_successv(struct jsonrpc_request *r, const char *result_fmt,
                             va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata, "{\"id\":%.*s,\"result\":", r->id_len, r->id);
  if (result_fmt != NULL) {
    mjson_vprintf(r->fn, r->fndata, result_fmt, ap);
  } else {
    mjson_printf(r->fn, r->fndata, "%s", "null");
  }
  mjson_printf(r->fn, r->fndata, "}\n");
 }
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...) {
  va_list ap;
  va_start(ap, result_fmt);
  jsonrpc_return_successv(r, result_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata) {
  const char *result = NULL, *error = NULL;
  int result_sz = 0, error_sz = 0;
  struct jsonrpc_method *m = NULL;
  struct jsonrpc_userdata d;
  struct jsonrpc_request r = {req, req_sz,           0,    0,   0, 0, 0,
                              0,   &jsonrpc_printer, NULL, NULL};
  d.fn = fn;
  d.fndata = fndata;
  r.fndata = &d;
  // Is is a response frame?
  mjson_find(req, req_sz, "$.result", &result, &result_sz);
  if (result == NULL) mjson_find(req, req_sz, "$.error", &error, &error_sz);
  if (result_sz > 0 || error_sz > 0) {
    if (ctx->response_cb != NULL) ctx->response_cb(req, req_sz, ctx->userdata);
    return;
  }
  // Method must exist and must be a string
  if (mjson_find(req, req_sz, "$.method", &r.method, &r.method_len) !=
      MJSON_TOK_STRING) {
    mjson_printf(fn, fndata, "{\"error\":{\"code\":-32700,\"message\":%.*Q}}\n",
                 req_sz, req);
    ctx->in_len = 0;
    return;
  }
  // id and params are optional
  mjson_find(req, req_sz, "$.id", &r.id, &r.id_len);
  mjson_find(req, req_sz, "$.params", &r.params, &r.params_len);
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (mjson_globmatch(m->method, m->method_sz, r.method + 1,
                        r.method_len - 2) > 0) {
      if (r.params == NULL) r.params = "";
      r.userdata = m->cbdata;
      m->cb(&r);
      break;
    }
  }
  if (m == NULL) {
    jsonrpc_return_error(&r, JSONRPC_ERROR_NOT_FOUND, "method not found", NULL);
  }
 }
 static int jsonrpc_print_methods(mjson_print_fn_t fn, void *fndata,
                                 va_list *ap) {
  struct jsonrpc_ctx *ctx = va_arg(*ap, struct jsonrpc_ctx *);
  struct jsonrpc_method *m;
  int len = 0;
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (m != ctx->methods) len += mjson_print_buf(fn, fndata, ",", 1);
    len += mjson_print_str(fn, fndata, m->method, strlen(m->method));
  }
  return len;
 }
 static void rpclist(struct jsonrpc_request *r) {
  jsonrpc_return_success(r, "[%M]", jsonrpc_print_methods, r->userdata);
 }
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t response_cb,
                      void *userdata) {
  ctx->response_cb = response_cb;
  ctx->userdata = userdata;
  jsonrpc_ctx_export(ctx, MJSON_RPC_LIST_NAME, rpclist, ctx);
 }
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *p) {
  if (ctx->in_len >= (int) sizeof(ctx->in)) ctx->in_len = 0;  // Overflow
  if (ch == '\n') {  // If new line, parse frame
    if (ctx->in_len > 1) jsonrpc_ctx_process(ctx, ctx->in, ctx->in_len, fn, p);
    ctx->in_len = 0;
  } else {
    ctx->in[ctx->in_len] = ch;  // Append to the buffer
    ctx->in_len++;
  }
 }
 void jsonrpc_init(mjson_print_fn_t response_cb, void *userdata) {
  jsonrpc_ctx_init(&jsonrpc_default_context, response_cb, userdata);
 }
 #endif  // MJSON_ENABLE_RPC
@@ -1,220 +0,0 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #ifndef MJSON_H
 #define MJSON_H
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifndef MJSON_ENABLE_PRINT
 #define MJSON_ENABLE_PRINT 1
 #endif
 #ifndef MJSON_ENABLE_RPC
 #define MJSON_ENABLE_RPC 1
 #endif
 #ifndef MJSON_ENABLE_BASE64
 #define MJSON_ENABLE_BASE64 1
 #endif
 #ifndef MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_MERGE 0
 #elif MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_PRETTY 0
 #elif MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_NEXT
 #define MJSON_ENABLE_NEXT 0
 #endif
 #ifndef MJSON_RPC_IN_BUF_SIZE
 #define MJSON_RPC_IN_BUF_SIZE 256
 #endif
 #ifndef MJSON_RPC_LIST_NAME
 #define MJSON_RPC_LIST_NAME "rpc.list"
 #endif
 #ifdef __cplusplus
 extern "C" {
 #endif
 enum {
  MJSON_ERROR_INVALID_INPUT = -1,
  MJSON_ERROR_TOO_DEEP = -2,
 };
 enum mjson_tok {
  MJSON_TOK_INVALID = 0,
  MJSON_TOK_KEY = 1,
  MJSON_TOK_STRING = 11,
  MJSON_TOK_NUMBER = 12,
  MJSON_TOK_TRUE = 13,
  MJSON_TOK_FALSE = 14,
  MJSON_TOK_NULL = 15,
  MJSON_TOK_ARRAY = 91,
  MJSON_TOK_OBJECT = 123,
 };
 #define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20)
 typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud);
 #ifndef MJSON_MAX_DEPTH
 #define MJSON_MAX_DEPTH 20
 #endif
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud);
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen);
 int mjson_get_number(const char *s, int len, const char *path, double *v);
 int mjson_get_bool(const char *s, int len, const char *path, int *v);
 int mjson_get_string(const char *s, int len, const char *path, char *to, int n);
 int mjson_get_hex(const char *s, int len, const char *path, char *to, int n);
 #if MJSON_ENABLE_NEXT
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype);
 #endif
 #if MJSON_ENABLE_BASE64
 int mjson_get_base64(const char *s, int len, const char *path, char *to, int n);
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen);
 #endif
 #if MJSON_ENABLE_PRINT
 typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata);
 typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *);
 struct mjson_fixedbuf {
  char *ptr;
  int size, len;
 };
 int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...);
 int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap);
 int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len);
 int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed);
 int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed);
 int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len);
 int mjson_print_null(const char *ptr, int len, void *userdata);
 int mjson_print_file(const char *ptr, int len, void *userdata);
 int mjson_print_fixed_buf(const char *ptr, int len, void *userdata);
 int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata);
 #if MJSON_ENABLE_PRETTY
 int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *);
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *);
 #endif
 #endif  // MJSON_ENABLE_PRINT
 #if MJSON_ENABLE_RPC
 void jsonrpc_init(mjson_print_fn_t, void *userdata);
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2);
 struct jsonrpc_request {
  const char *frame;    // Points to the whole frame
  int frame_len;        // Frame length
  const char *params;   // Points to the "params" in the request frame
  int params_len;       // Length of the "params"
  const char *id;       // Points to the "id" in the request frame
  int id_len;           // Length of the "id"
  const char *method;   // Points to the "method" in the request frame
  int method_len;       // Length of the "method"
  mjson_print_fn_t fn;  // Printer function
  void *fndata;         // Printer function data
  void *userdata;       // Callback's user data as specified at export time
 };
 struct jsonrpc_method {
  const char *method;
  int method_sz;
  void (*cb)(struct jsonrpc_request *);
  void *cbdata;
  struct jsonrpc_method *next;
 };
 // Main RPC context, stores current request information and a list of
 // exported RPC methods.
 struct jsonrpc_ctx {
  struct jsonrpc_method *methods;
  void *userdata;
  mjson_print_fn_t response_cb;
  int in_len;
  char in[MJSON_RPC_IN_BUF_SIZE];
 };
 // Registers function fn under the given name within the given RPC context
 #define jsonrpc_ctx_export(ctx, name, fn, ud)                                \
  do {                                                                       \
    static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0, 0}; \
    m.cbdata = (ud);                                                         \
    m.next = (ctx)->methods;                                                 \
    (ctx)->methods = &m;                                                     \
  } while (0)
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *);
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...);
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...);
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata);
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *fndata);
 extern struct jsonrpc_ctx jsonrpc_default_context;
 #define jsonrpc_export(name, fn, ud) \
  jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn), (ud))
 #define jsonrpc_process(buf, len, fn, data) \
  jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (data))
 #define jsonrpc_process_byte(x, fn, data) \
  jsonrpc_ctx_process_byte(&jsonrpc_default_context, (x), (fn), (data))
 #define JSONRPC_ERROR_INVALID -32700    /* Invalid JSON was received */
 #define JSONRPC_ERROR_NOT_FOUND -32601  /* The method does not exist */
 #define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */
 #define JSONRPC_ERROR_INTERNAL -32603   /* Internal JSON-RPC error */
 #endif  // MJSON_ENABLE_RPC
 #ifdef __cplusplus
 }
 #endif
 #endif  // MJSON_H
@@ -1,312 +0,0 @@
 const {h, render, Component} = preact;
 const html = htm.bind(h);
 class Login extends Component {
  state = {user: '', pass: ''};
  onclick = (app) => {
    const authhdr = 'Basic ' + btoa(this.state.user + ':' + this.state.pass);
    const headers = {Authorization: authhdr};
    return axios.get('/api/login', {headers})
        .then(res => app.setUser(res.data.token))
        .catch(err => alert('Login failed'));
  };
  onpassinput = (ev) => this.setState({pass: ev.target.value});
  onuserinput = (ev) => this.setState({user: ev.target.value});
  render({app}, {user, pass, signup}) {
    return html`
      <div class='mx-auto bg-light rounded border my-5' style='max-width: 480px;'>
        <div class='form p-5 rounded form-sm'>
          <h4 class="text-muted mb-4">Login </h4>
          <input type='email' placeholder='Email' class='my-2 form-control'
            oninput=${this.onuserinput} value=${user} />
          <input type="password" placeholder="Password" class="my-2 form-control"
            oninput=${this.onpassinput} value=${pass}
            onchange=${ev => this.onclick(app)} />
          <div class="mb-4">
            <button class="btn btn-info btn-block" 
    disabled=${!user || !pass} onclick="${ev => this.onclick(app)}"
            > Login </button>
          </div>
          <div class="text-muted small">
            Valid logins: admin:admin, user1:pass1, user2:pass2
          </div>
        </div>
      </div>
    `
  }
 };
 class Dropdown extends Component {
  state = {show: false};
  render(props, state) {
    const onclick = x => this.setState({show: x});
    const show = state.show ? 'show' : '';
    return html`
      <div class="dropdown autoexpand ${props.cls}">
        <div type="buttonx" onclick=${() => onclick(!state.show)}
          class="dropdown-toggle my-0 ${props.bcls}"
          data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          ${props.title}
        </div>
        <div onclick=${() => onclick(false)} style=${props.dstyle}
          class="dropdown-menu ${props.dcls} ${show}">
          ${props.children}
        </div>
      </div>`;
  }
 };
 const NavLink = ({href, title, url}) => html`<a class="nav-item nav-link
    ${url == href ? 'active' : ''}"
    target=${href.match(/^http/) ? '_blank' : ''}
    href="${href.match(/^http/) ? '' : '#'}${href}">${title}</a>`;
 class Header extends Component {
  state = {expanded: false};
  ontoggle = () => this.setState({expanded: !this.state.expanded});
  render(props, state) {
    const u = props.app.state.user || {};
    return html`
      <nav class="navbar navbar-expand-md navbar-dark bg-dark">
        <a class="navbar-brand" href="#">
          <img src="images/logo.png" width="26" height="26" alt="" class="mr-2" />
          MyProduct
        </a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation" 
            onclick=${() => this.ontoggle()} >
          <span class="navbar-toggler-icon"></span>
        </button>
        <div class="navbar-collapse ${state.expanded ? '' : 'collapse'}"
            id="navbarNav">
          <div class="nav navbar-nav mr-auto">
            <${NavLink} href="/" title="Dashboard" url=${props.url} />
            <${NavLink} href="/logs" title="Logs" url=${props.url} />
          </div>
        </div>
        <form class="form-inline">
          <${Dropdown} title="${u.user}" cls="mr-2" 
          bcls="btn btn-sm btn-outline-light pointer" dcls="m-0 dropdown-menu-right">
            <div onclick=${() => props.app.setUser('')}
              class="dropdown-item small pointer text-center">logout</div>
          </${Dropdown}>
          <img src="images/user.png" class="rounded-circle nav-item mr-2" width="30" />
        </form>
      </nav>
    `
  }
 };
 const Info = () => html`<div class="alert alert-secondary my-3">
  This dashboard shows values kept in server memory. Many clients
  can open this page. As soon as any client changes any value,
  all clients update automatically.
  The JS code that watches state changes, reconnects on network failures.
  That means if server restarts, dashboard on all connected clients
  refresh automatically.
  You can use <code>curl</code> command-line utility:
  <br/><code>curl localhost:8000/api/config/get</code>
  <br/><code>curl localhost:8000/api/config/watch</code>
  <br/><code>curl localhost:8000/api/config/set -d '{"a":123}'</code>
  <br/><span class="badge badge-danger">NOTE:</span> administrators
  can change settings values, whilst users cannot.
 </div>`;
 class DashVideo extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 class DashForm extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input class="form-control form-control-sm"
          value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input class="form-control form-control-sm"
            value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button class="btn btn-primary btn-block"
            onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 class DashSettings extends Component {
  state = {value1: null, value2: null};
  componentDidMount() {
    axios.get('/api/config/get')
        .then(r => this.setState(r.data))
        .catch(e => console.log(e));
    var self = this;
    var f = function(reader) {
      return reader.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        self.setState(JSON.parse(data));
        // console.log(JSON.parse(data));
        if (!result.done) return f(reader);
      });
    };
    fetch('/api/config/watch')
        .then(r => r.body.getReader())
        .then(f)
        .catch(e => setTimeout(x => self.componentDidMount(), 1000));
  }
  render(props, state) {
    return html
    `<div id="dashboard" style="display: flex; justify-content: flex-evenly;">
        <div style="width:50%;text-align:center;">Value 1 (number):
          <div style="font-size:140%;"><b>${state.value1}</b></div></div>
        <div style="width:50%;text-align:center;">Value 2 (string):
          <div style="font-size:140%;"><b>${state.value2}</b></div></div>
    </div>`
  }
 };
 class AdminDashboard extends Component {
  render(props, state) {
    return html`<div class="container-fluid">
      <${Info} />
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Settings</div>
          <div class="card-body"><${DashSettings} /></div>
        </div>
        <div class="card">
          <div class="card-header">Video stream</div>
          <div class="card-body"><img src="/api/video1" class="mw-100" /></div>
        </div>
        <div class="card">
          <div class="card-header">Change settings</div>
          <div class="card-body"><${DashForm} /></div>
        </div>
      </div>
    </div>`
  }
 }
 class UserDashboard extends Component {
  render(props, state) {
    return html`<div class="container-fluid">
      <${Info} />
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Settings</div>
          <div class="card-body"><${DashSettings} /></div>
        </div>
        <div class="card">
          <div class="card-header">Video stream</div>
          <div class="card-body"><img src="/api/video1" class="mw-100" /></div>
        </div>
      </div>
    </div>`
  }
 }
 class Logs extends Component {
  state = {live: '', static: ''};
  componentDidMount() {
    var self = this;
    var f = function(r) {
      return r.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        var live = self.state.live + data;
        self.setState({live});   // Append live log
        if (!result.done) f(r);  // Read next chunk
      });
    };
    fetch('/api/log/static')
        .then(r => r.text())
        .then(r => {
          self.setState({static: r});
        })
        .then(r => fetch('/api/log/live'))
        .then(r => r.body.getReader())
        .then(f);
  }
  render(props, state) {
    return html`<div class="container-fluid">
      <div class="alert alert-secondary my-3">
        A div below shows file log.txt, which is produced by the server.
        The server appends a new log message to that file every second,
        and a div below also shows that, implementing a "live log" feature.
        JS code on this page first fetches /api/log/static that returns
        log.txt contents, then fetches /api/log/live that does not return,
        but feeds chunks of data as they arrive (live log).
        <br/><br/>
        You can also use <code>curl</code> command-line utility to see
        live logs:
        <br/><code>curl localhost:8000/api/log/live</code>
      </div>
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Static</div>
          <div class="card-body"><pre class="log">${state.static}</pre></div>
        </div>
        <div class="card">
          <div class="card-header">Live</div>
          <div class="card-body"><pre class="log">${state.live}</pre></div>
        </div>
      </div>
    </div>`
  }
 }
 class App extends Component {
  state = {user: null, url: '/'};
  setUser(token) {
    const maxAge = token ? 86400 : 0;
    document.cookie = `access_token=${token};path=/;max-age=${maxAge}`;
    // this.setState({token});
    return axios.get('/api/login')
        .then(res => this.setState({user: res.data}))
        .catch(err => this.setState({user: {}}));
  }
  componentDidMount() {
    const getCookie = name => {
      var v = document.cookie.match('(^|;) ?' + name + '=([^;]*)(;|$)');
      return v ? v[2] : '';
    };
    this.setUser(getCookie('access_token'));  // Move from state1 to 2 or 3
  }
  render(props, state) {
    // We have three states:
    // 1. Beginning. We don't know if we have a valid auth token or not
    // 2. We sent an /api/login request, and failed to login
    // 3. We sent an /api/login request, and succeeded to login
    if (!state.user) return '';                          // State 1
    if (!state.user.user) return h(Login, {app: this});  // State 2
    return h(                                            // State 3
        'div', {}, h(Header, {url: state.url, app: this}),
        h(preactRouter.Router, {
          history: History.createHashHistory(),
          onChange: ev => this.setState({url: ev.url}),
        },
          h(state.user.user == 'admin' ? AdminDashboard : UserDashboard,
            {default: true, app: this}),
          h(Logs, {path: 'logs', app: this})));
  }
 };
 window.onload = () => render(h(App), document.body);
@@ -1,9 +0,0 @@
 /* axios v0.19.0-beta.1 | (c) 2018 by Matt Zabriskie */
 !function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(5),a=n(22),u=n(11),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(10),c.all=function(e){return Promise.all(e)},c.spread=n(25),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===j.call(e)}function o(e){return"[object ArrayBuffer]"===j.call(e)}function s(e){return"undefined"!=typeof FormData&&e instanceof FormData}function i(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function a(e){return"string"==typeof e}function u(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===j.call(e)}function d(e){return"[object File]"===j.call(e)}function l(e){return"[object Blob]"===j.call(e)}function h(e){return"[object Function]"===j.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function g(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function x(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product&&"NativeScript"!==navigator.product&&"NS"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var s in e)Object.prototype.hasOwnProperty.call(e,s)&&t.call(null,e[s],s,e)}function w(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=w(t[n],e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function b(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=b(t[n],e):"object"==typeof e?t[n]=b({},e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function E(e,t,n){return v(t,function(t,r){n&&"function"==typeof t?e[r]=S(t,n):e[r]=t}),e}var S=n(3),R=n(4),j=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:o,isBuffer:R,isFormData:s,isArrayBufferView:i,isString:a,isNumber:u,isObject:f,isUndefined:c,isDate:p,isFile:d,isBlob:l,isFunction:h,isStream:m,isURLSearchParams:y,isStandardBrowserEnv:x,forEach:v,merge:w,deepMerge:b,extend:E,trim:g}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t){/*!
 	 * Determine if an object is a Buffer
 	 *
 	 * @author   Feross Aboukhadijeh <https://feross.org>
 	 * @license  MIT
 	 */
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 /*!
 * Bootstrap v4.3.1 (https://getbootstrap.com/)
 * Copyright 2011-2019 The Bootstrap Authors
 * Copyright 2011-2019 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
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 <!DOCTYPE html>
 <html lang="en">
  <head>
    <title>example</title>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
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    <script src="axios.min.js"></script>
    <script src="app.js"></script>
  </head>
  <body></body>
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  let path = key.split('.'), cache = component.__lsc || (component.__lsc = {});
  return cache[key + eventPath] || (cache[key + eventPath] = function(e) {
           let t = e && e.target || this, state = {}, obj = state,
               v = typeof eventPath === 'string' ?
               delve(e, eventPath) :
               t.nodeName ? (t.type.match(/^che|rad/) ? t.checked : t.value) :
                            e,
               i = 0;
           for (; i < path.length - 1; i++) {
             obj = obj[path[i]] ||
                 (obj[path[i]] = !i && component.state[path[i]] || {});
           }
           obj[path[i]] = v;
           component.setState(state);
         });
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@@ -1,2 +0,0 @@
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n.type?_(n):null}function m(n){var l,u;if(null!=(n=n.__)&&null!=n.__c){for(n.__e=n.__c.base=null,l=0;l<n.__k.length;l++)if(null!=(u=n.__k[l])&&null!=u.__e){n.__e=n.__c.base=u.__e;break}return m(n)}}function k(l){(!l.__d&&(l.__d=!0)&&u.push(l)&&!w.__r++||i!==n.debounceRendering)&&((i=n.debounceRendering)||t)(w)}function w(){for(var n;w.__r=u.length;)n=u.sort(function(n,l){return n.__v.__b-l.__v.__b}),u=[],n.some(function(n){var l,u,t,i,o,r,e;n.__d&&(r=(o=(l=n).__v).__e,(e=l.__P)&&(u=[],(t=s({},o)).__v=t,i=N(e,o,t,l.__n,void 0!==e.ownerSVGElement,null,u,null==r?_(o):r),z(u,o),i!=r&&m(o)))})}function g(n,l,u,t,i,o,r,e,a,s){var h,d,m,k,w,g,x,C=t&&t.__k||c,A=C.length;for(a==f&&(a=null!=r?r[0]:A?_(t,0):null),u.__k=[],h=0;h<l.length;h++)if(null!=(k=u.__k[h]=null==(k=l[h])||"boolean"==typeof k?null:"string"==typeof k||"number"==typeof k?y(null,k,null,null,k):Array.isArray(k)?y(p,{children:k},null,null,null):null!=k.__e||null!=k.__c?y(k.type,k.props,k.key,null,k.__v):k)){if(k.__=u,k.__b=u.__b+1,null===(m=C[h])||m&&k.key==m.key&&k.type===m.type)C[h]=void 0;else for(d=0;d<A;d++){if((m=C[d])&&k.key==m.key&&k.type===m.type){C[d]=void 0;break}m=null}w=N(n,k,m=m||f,i,o,r,e,a,s),(d=k.ref)&&m.ref!=d&&(x||(x=[]),m.ref&&x.push(m.ref,null,k),x.push(d,k.__c||w,k)),null!=w?(null==g&&(g=w),a=b(n,k,m,C,r,w,a),"option"==u.type?n.value="":"function"==typeof u.type&&(u.__d=a)):a&&m.__e==a&&a.parentNode!=n&&(a=_(m))}if(u.__e=g,null!=r&&"function"!=typeof u.type)for(h=r.length;h--;)null!=r[h]&&v(r[h]);for(h=A;h--;)null!=C[h]&&j(C[h],C[h]);if(x)for(h=0;h<x.length;h++)$(x[h],x[++h],x[++h])}function b(n,l,u,t,i,o,r){var e,f,c;if(void 0!==l.__d)e=l.__d,l.__d=void 0;else if(i==u||o!=r||null==o.parentNode)n:if(null==r||r.parentNode!==n)n.appendChild(o),e=null;else{for(f=r,c=0;(f=f.nextSibling)&&c<t.length;c+=2)if(f==o)break 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u&&"dangerouslySetInnerHTML"!==l&&(l!==(l=l.replace(/^xlink:?/,""))?null==u||!1===u?n.removeAttributeNS("http://www.w3.org/1999/xlink",l.toLowerCase()):n.setAttributeNS("http://www.w3.org/1999/xlink",l.toLowerCase(),u):null==u||!1===u&&!/^ar/.test(l)?n.removeAttribute(l):n.setAttribute(l,u))}function P(l){this.l[l.type](n.event?n.event(l):l)}function E(n,l,u){var t,i;for(t=0;t<n.__k.length;t++)(i=n.__k[t])&&(i.__=n,i.__e&&("function"==typeof i.type&&i.__k.length>1&&E(i,l,u),l=b(u,i,i,n.__k,null,i.__e,l),"function"==typeof n.type&&(n.__d=l)))}function N(l,u,t,i,o,r,e,f,c){var a,v,h,y,_,m,k,w,b,x,C,A=u.type;if(void 0!==u.constructor)return null;(a=n.__b)&&a(u);try{n:if("function"==typeof A){if(w=u.props,b=(a=A.contextType)&&i[a.__c],x=a?b?b.props.value:a.__:i,t.__c?k=(v=u.__c=t.__c).__=v.__E:("prototype"in A&&A.prototype.render?u.__c=v=new A(w,x):(u.__c=v=new 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 //# sourceMappingURL=preact.min.js.map
@@ -1,7 +0,0 @@
 html, body { margin: 0; padding: 0; height: 100%; }
 select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
 .btn:focus,.btn:active:focus,.btn.active:focus,
 .btn.focus,.btn:active.focus,.btn.active.focus { outline: none; box-shadow:none !important; }
 .dropdown.autoexpand:hover>.dropdown-menu { display: block; }
 .pointer { cursor: pointer; }
 .log { max-height: 10em; overflow: auto; height: 100%; }
@@ -1,10 +0,0 @@
 PROG ?= example
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c mjson.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt
@@ -1,81 +0,0 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mjson.h"  // JSON parsing and printing
 #include "mongoose.h"
 // This is a configuration structure we're going to show on a dashboard
 static struct config {
  int value1;
  char *value2;
 } s_config = {123, NULL};
 // Stringifies the config. A caller must free() it.
 static char *stringify_config(struct config *cfg) {
  char *s = NULL;
  mjson_printf(mjson_print_dynamic_buf, &s, "{%Q:%d,%Q:%Q}", "value1",
               cfg->value1, "value2", cfg->value2);
  return s;
 }
 // Update config structure. Return true if changed, false otherwise
 static bool update_config(struct mg_http_message *hm, struct config *cfg) {
  bool changed = false;
  char buf[256];
  double dv;
  if (mjson_get_number(hm->body.ptr, hm->body.len, "$.value1", &dv)) {
    s_config.value1 = dv;
    changed = true;
  }
  if (mjson_get_string(hm->body.ptr, hm->body.len, "$.value2", buf,
                       sizeof(buf)) > 0) {
    free(s_config.value2);
    s_config.value2 = strdup(buf);
    changed = true;
  }
  return changed;
 }
 // Notify all config watchers about the config change
 static void notify_config_change(struct mg_mgr *mgr) {
  struct mg_connection *c;
  char *s = stringify_config(&s_config);
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'W') mg_http_printf_chunk(c, "%s\n", s);
  }
  free(s);
 }
 // HTTP request handler function. It implements the following endpoints:
 //   /api/config/get - returns current config
 //   /api/config/set - updates current config
 //   /api/config/watch - does not return. Sends config as it changes in
 //   chunks all other URI - serves web_root/ directory
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    if (mg_http_match_uri(hm, "/api/config/get")) {
      char *s = stringify_config(&s_config);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s\n",
                (int) strlen(s) + 1, s);
      free(s);
    } else if (mg_http_match_uri(hm, "/api/config/set")) {
      if (update_config(hm, &s_config)) notify_config_change(fn_data);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/config/watch")) {
      c->label[0] = 'W';  // Mark ourselves as a config watcher
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else {
      mg_http_serve_dir(c, ev_data, "web_root");
    }
  }
 }
 int main(void) {
  struct mg_mgr mgr;
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, "http://localhost:8000", cb, &mgr);
  for (;;) mg_mgr_poll(&mgr, 1000);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -1,981 +0,0 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #include "mjson.h"
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
 #else
 #define va_copy(x, y) (x) = (y)
 #define snprintf _snprintf
 #define alloca _alloca
 #endif
 static int mjson_esc(int c, int esc) {
  const char *p, *esc1 = "\b\f\n\r\t\\\"", *esc2 = "bfnrt\\\"";
  for (p = esc ? esc1 : esc2; *p != '\0'; p++) {
    if (*p == c) return esc ? esc2[p - esc1] : esc1[p - esc2];
  }
  return 0;
 }
 static int mjson_pass_string(const char *s, int len) {
  int i;
  for (i = 0; i < len; i++) {
    if (s[i] == '\\' && i + 1 < len && mjson_esc(s[i + 1], 1)) {
      i++;
    } else if (s[i] == '\0') {
      return MJSON_ERROR_INVALID_INPUT;
    } else if (s[i] == '"') {
      return i;
    }
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud) {
  enum { S_VALUE, S_KEY, S_COLON, S_COMMA_OR_EOO } expecting = S_VALUE;
  unsigned char nesting[MJSON_MAX_DEPTH];
  int i, depth = 0;
 #define MJSONCALL(ev) \
  if (cb != NULL && cb(ev, s, start, i - start + 1, ud)) return i + 1;
 // In the ascii table, the distance between `[` and `]` is 2.
 // Ditto for `{` and `}`. Hence +2 in the code below.
 #define MJSONEOO()                                                     \
  do {                                                                 \
    if (c != nesting[depth - 1] + 2) return MJSON_ERROR_INVALID_INPUT; \
    depth--;                                                           \
    if (depth == 0) {                                                  \
      MJSONCALL(tok);                                                  \
      return i + 1;                                                    \
    }                                                                  \
  } while (0)
  for (i = 0; i < len; i++) {
    int start = i;
    unsigned char c = ((unsigned char *) s)[i];
    int tok = c;
    if (c == ' ' || c == '\t' || c == '\n' || c == '\r') continue;
    // printf("- %c [%.*s] %d %d\n", c, i, s, depth, expecting);
    switch (expecting) {
      case S_VALUE:
        if (c == '{') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          expecting = S_KEY;
          break;
        } else if (c == '[') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          break;
        } else if (c == ']' && depth > 0) {  // Empty array
          MJSONEOO();
        } else if (c == 't' && i + 3 < len && memcmp(&s[i], "true", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_TRUE;
        } else if (c == 'n' && i + 3 < len && memcmp(&s[i], "null", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_NULL;
        } else if (c == 'f' && i + 4 < len && memcmp(&s[i], "false", 5) == 0) {
          i += 4;
          tok = MJSON_TOK_FALSE;
        } else if (c == '-' || ((c >= '0' && c <= '9'))) {
          char *end = NULL;
          strtod(&s[i], &end);
          if (end != NULL) i += end - &s[i] - 1;
          tok = MJSON_TOK_NUMBER;
        } else if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_STRING;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        if (depth == 0) {
          MJSONCALL(tok);
          return i + 1;
        }
        expecting = S_COMMA_OR_EOO;
        break;
      case S_KEY:
        if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_KEY;
          expecting = S_COLON;
        } else if (c == '}') {  // Empty object
          MJSONEOO();
          expecting = S_COMMA_OR_EOO;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COLON:
        if (c == ':') {
          expecting = S_VALUE;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COMMA_OR_EOO:
        if (depth <= 0) return MJSON_ERROR_INVALID_INPUT;
        if (c == ',') {
          expecting = (nesting[depth - 1] == '{') ? S_KEY : S_VALUE;
        } else if (c == ']' || c == '}') {
          MJSONEOO();
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
    }
    MJSONCALL(tok);
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 struct msjon_get_data {
  const char *path;     // Lookup json path
  int pos;              // Current path index
  int d1;               // Current depth of traversal
  int d2;               // Expected depth of traversal
  int i1;               // Index in an array
  int i2;               // Expected index in an array
  int obj;              // If the value is array/object, offset where it starts
  const char **tokptr;  // Destination
  int *toklen;          // Destination length
  int tok;              // Returned token
 };
 static int mjson_plen(const char *s) {
  int i = 0;
  while (s[i] != '\0' && s[i] != '.' && s[i] != '[') i++;
  return i;
 }
 static int mjson_get_cb(int tok, const char *s, int off, int len, void *ud) {
  struct msjon_get_data *data = (struct msjon_get_data *) ud;
  // printf("--> %2x %2d %2d %2d %2d\t'%s'\t'%.*s'\t\t'%.*s'\n", tok, data->d1,
  // data->d2, data->i1, data->i2, data->path + data->pos, off, s, len,
  // s + off);
  if (data->tok != MJSON_TOK_INVALID) return 1;  // Found
  if (tok == '{') {
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == '[') {
    if (data->d1 == data->d2 && data->path[data->pos] == '[') {
      data->i1 = 0;
      data->i2 = (int) strtod(&data->path[data->pos + 1], NULL);
      if (data->i1 == data->i2) {
        data->d2++;
        data->pos += 3;
      }
    }
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == ',') {
    if (data->d1 == data->d2 + 1) {
      data->i1++;
      if (data->i1 == data->i2) {
        while (data->path[data->pos] != ']') data->pos++;
        data->pos++;
        data->d2++;
      }
    }
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2 + 1 &&
             data->path[data->pos] == '.' && s[off] == '"' &&
             s[off + len - 1] == '"' &&
             mjson_plen(&data->path[data->pos + 1]) == len - 2 &&
             !memcmp(s + off + 1, &data->path[data->pos + 1], len - 2)) {
    data->d2++;
    data->pos += len - 1;
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2) {
    return 1;  // Exhausted path, not found
  } else if (tok == '}' || tok == ']') {
    data->d1--;
    // data->d2--;
    if (!data->path[data->pos] && data->d1 == data->d2 && data->obj != -1) {
      data->tok = tok - 2;
      if (data->tokptr) *data->tokptr = s + data->obj;
      if (data->toklen) *data->toklen = off - data->obj + 1;
      return 1;
    }
  } else if (MJSON_TOK_IS_VALUE(tok)) {
    // printf("TOK --> %d\n", tok);
    if (data->d1 == data->d2 && !data->path[data->pos]) {
      data->tok = tok;
      if (data->tokptr) *data->tokptr = s + off;
      if (data->toklen) *data->toklen = len;
      return 1;
    }
  }
  return 0;
 }
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen) {
  struct msjon_get_data data = {jp, 1,  0,      0,      0,
                                0,  -1, tokptr, toklen, MJSON_TOK_INVALID};
  if (jp[0] != '$') return MJSON_TOK_INVALID;
  if (mjson(s, len, mjson_get_cb, &data) < 0) return MJSON_TOK_INVALID;
  return (enum mjson_tok) data.tok;
 }
 int mjson_get_number(const char *s, int len, const char *path, double *v) {
  const char *p;
  int tok, n;
  if ((tok = mjson_find(s, len, path, &p, &n)) == MJSON_TOK_NUMBER) {
    if (v != NULL) *v = strtod(p, NULL);
  }
  return tok == MJSON_TOK_NUMBER ? 1 : 0;
 }
 int mjson_get_bool(const char *s, int len, const char *path, int *v) {
  int tok = mjson_find(s, len, path, NULL, NULL);
  if (tok == MJSON_TOK_TRUE && v != NULL) *v = 1;
  if (tok == MJSON_TOK_FALSE && v != NULL) *v = 0;
  return tok == MJSON_TOK_TRUE || tok == MJSON_TOK_FALSE ? 1 : 0;
 }
 static int mjson_unescape(const char *s, int len, char *to, int n) {
  int i, j;
  for (i = 0, j = 0; i < len && j < n; i++, j++) {
    if (s[i] == '\\' && i + 1 < len) {
      int c = mjson_esc(s[i + 1], 0);
      if (c == 0) return -1;
      to[j] = c;
      i++;
    } else {
      to[j] = s[i];
    }
  }
  if (j >= n) return -1;
  if (n > 0) to[j] = '\0';
  return j;
 }
 int mjson_get_string(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return -1;
  return mjson_unescape(p + 1, sz - 2, to, n);
 }
 int mjson_get_hex(const char *s, int len, const char *x, char *to, int n) {
  const char *p;
  int i, j, sz;
  if (mjson_find(s, len, x, &p, &sz) != MJSON_TOK_STRING) return -1;
  for (i = j = 0; i < sz - 3 && j < n; i += 2, j++) {
 #define HEXTOI(x) (x >= '0' && x <= '9' ? x - '0' : x - 'W')
    unsigned char a = *(const unsigned char *) (p + i + 1);
    unsigned char b = *(const unsigned char *) (p + i + 2);
    ((unsigned char *) to)[j] = (HEXTOI(a) << 4) | HEXTOI(b);
  }
  if (j < n) to[j] = '\0';
  return j;
 }
 #if MJSON_ENABLE_BASE64
 static int mjson_base64rev(int c) {
  if (c >= 'A' && c <= 'Z') {
    return c - 'A';
  } else if (c >= 'a' && c <= 'z') {
    return c + 26 - 'a';
  } else if (c >= '0' && c <= '9') {
    return c + 52 - '0';
  } else if (c == '+') {
    return 62;
  } else if (c == '/') {
    return 63;
  } else {
    return 64;
  }
 }
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen) {
  const char *end = src + n;
  int len = 0;
  while (src + 3 < end && len < dlen) {
    int a = mjson_base64rev(src[0]), b = mjson_base64rev(src[1]),
        c = mjson_base64rev(src[2]), d = mjson_base64rev(src[3]);
    dst[len++] = (a << 2) | (b >> 4);
    if (src[2] != '=' && len < dlen) {
      dst[len++] = (b << 4) | (c >> 2);
      if (src[3] != '=' && len < dlen) {
        dst[len++] = (c << 6) | d;
      }
    }
    src += 4;
  }
  if (len < dlen) dst[len] = '\0';
  return len;
 }
 int mjson_get_base64(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return 0;
  return mjson_base64_dec(p + 1, sz - 2, to, n);
 }
 #endif  // MJSON_ENABLE_BASE64
 #if MJSON_ENABLE_NEXT
 struct nextdata {
  int off, len, depth, t, vo, arrayindex;
  int *koff, *klen, *voff, *vlen, *vtype;
 };
 static int next_cb(int tok, const char *s, int off, int len, void *ud) {
  struct nextdata *d = (struct nextdata *) ud;
  // int i;
  switch (tok) {
    case '{':
    case '[':
      if (d->depth == 0 && tok == '[') d->arrayindex = 0;
      if (d->depth == 1 && off > d->off) {
        d->vo = off;
        d->t = tok == '{' ? MJSON_TOK_OBJECT : MJSON_TOK_ARRAY;
        if (d->voff) *d->voff = off;
        if (d->vtype) *d->vtype = d->t;
      }
      d->depth++;
      break;
    case '}':
    case ']':
      d->depth--;
      if (d->depth == 1 && d->vo) {
        d->len = off + len;
        if (d->vlen) *d->vlen = d->len - d->vo;
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->depth == 1 && d->arrayindex >= 0) d->arrayindex++;
      break;
    case ',':
    case ':':
      break;
    case MJSON_TOK_KEY:
      if (d->depth == 1 && d->off < off) {
        if (d->koff) *d->koff = off;  // And report back to the user
        if (d->klen) *d->klen = len;  // If we have to
      }
      break;
    default:
      if (d->depth != 1) break;
      // If we're iterating over the array
      if (off > d->off) {
        d->len = off + len;
        if (d->vlen) *d->vlen = len;    // value length
        if (d->voff) *d->voff = off;    // value offset
        if (d->vtype) *d->vtype = tok;  // value type
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->arrayindex >= 0) d->arrayindex++;
      break;
  }
  (void) s;
  return 0;
 }
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype) {
  struct nextdata d = {off, 0, 0, 0, 0, -1, koff, klen, voff, vlen, vtype};
  mjson(s, n, next_cb, &d);
  return d.len;
 }
 #endif
 #if MJSON_ENABLE_PRINT
 int mjson_print_fixed_buf(const char *ptr, int len, void *fndata) {
  struct mjson_fixedbuf *fb = (struct mjson_fixedbuf *) fndata;
  int i, left = fb->size - 1 - fb->len;
  if (left < len) len = left;
  for (i = 0; i < len; i++) fb->ptr[fb->len + i] = ptr[i];
  fb->len += len;
  fb->ptr[fb->len] = '\0';
  return len;
 }
 int mjson_print_dynamic_buf(const char *ptr, int len, void *fndata) {
  char *s, *buf = *(char **) fndata;
  int curlen = buf == NULL ? 0 : strlen(buf);
  if ((s = (char *) realloc(buf, curlen + len + 1)) == NULL) {
    return 0;
  } else {
    memcpy(s + curlen, ptr, len);
    s[curlen + len] = '\0';
    *(char **) fndata = s;
    return len;
  }
 }
 int mjson_print_null(const char *ptr, int len, void *userdata) {
  (void) ptr;
  (void) userdata;
  return len;
 }
 int mjson_print_file(const char *ptr, int len, void *userdata) {
  return fwrite(ptr, 1, len, (FILE *) userdata);
 }
 int mjson_print_buf(mjson_print_fn_t fn, void *fndata, const char *buf,
                    int len) {
  return fn(buf, len, fndata);
 }
 int mjson_print_int(mjson_print_fn_t fn, void *fndata, int value,
                    int is_signed) {
  char buf[20];
  int len = snprintf(buf, sizeof(buf), is_signed ? "%d" : "%u", value);
  return fn(buf, len, fndata);
 }
 int mjson_print_long(mjson_print_fn_t fn, void *fndata, long value,
                     int is_signed) {
  char buf[20];
  const char *fmt = (is_signed ? "%ld" : "%lu");
  int len = snprintf(buf, sizeof(buf), fmt, value);
  return fn(buf, len, fndata);
 }
 int mjson_print_dbl(mjson_print_fn_t fn, void *fndata, double d,
                    const char *fmt) {
  char buf[40];
  int n = snprintf(buf, sizeof(buf), fmt, d);
  return fn(buf, n, fndata);
 }
 int mjson_print_str(mjson_print_fn_t fn, void *fndata, const char *s, int len) {
  int i, n = fn("\"", 1, fndata);
  for (i = 0; i < len; i++) {
    char c = mjson_esc(s[i], 1);
    if (c) {
      n += fn("\\", 1, fndata);
      n += fn(&c, 1, fndata);
    } else {
      n += fn(&s[i], 1, fndata);
    }
  }
  return n + fn("\"", 1, fndata);
 }
 #if MJSON_ENABLE_BASE64
 int mjson_print_b64(mjson_print_fn_t fn, void *fndata, const unsigned char *s,
                    int n) {
  const char *t =
      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  int i, len = fn("\"", 1, fndata);
  for (i = 0; i < n; i += 3) {
    int a = s[i], b = i + 1 < n ? s[i + 1] : 0, c = i + 2 < n ? s[i + 2] : 0;
    char buf[4] = {t[a >> 2], t[(a & 3) << 4 | (b >> 4)], '=', '='};
    if (i + 1 < n) buf[2] = t[(b & 15) << 2 | (c >> 6)];
    if (i + 2 < n) buf[3] = t[c & 63];
    len += fn(buf, sizeof(buf), fndata);
  }
  return len + fn("\"", 1, fndata);
 }
 #endif /* MJSON_ENABLE_BASE64 */
 int mjson_vprintf(mjson_print_fn_t fn, void *fndata, const char *fmt,
                  va_list xap) {
  int i = 0, n = 0;
  va_list ap;
  va_copy(ap, xap);
  while (fmt[i] != '\0') {
    if (fmt[i] == '%') {
      char fc = fmt[++i];
      int is_long = 0;
      if (fc == 'l') {
        is_long = 1;
        fc = fmt[i + 1];
      }
      if (fc == 'Q') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf ? buf : "", buf ? strlen(buf) : 0);
      } else if (strncmp(&fmt[i], ".*Q", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'd' || fc == 'u') {
        int is_signed = (fc == 'd');
        if (is_long) {
          long val = va_arg(ap, long);
          n += mjson_print_long(fn, fndata, val, is_signed);
          i++;
        } else {
          int val = va_arg(ap, int);
          n += mjson_print_int(fn, fndata, val, is_signed);
        }
      } else if (fc == 'B') {
        const char *s = va_arg(ap, int) ? "true" : "false";
        n += mjson_print_buf(fn, fndata, s, strlen(s));
      } else if (fc == 's') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, strlen(buf));
      } else if (strncmp(&fmt[i], ".*s", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'g') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%g");
      } else if (fc == 'f') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%f");
 #if MJSON_ENABLE_BASE64
      } else if (fc == 'V') {
        int len = va_arg(ap, int);
        const char *buf = va_arg(ap, const char *);
        n += mjson_print_b64(fn, fndata, (unsigned char *) buf, len);
 #endif
      } else if (fc == 'H') {
        const char *hex = "0123456789abcdef";
        int i, len = va_arg(ap, int);
        const unsigned char *p = va_arg(ap, const unsigned char *);
        n += fn("\"", 1, fndata);
        for (i = 0; i < len; i++) {
          n += fn(&hex[(p[i] >> 4) & 15], 1, fndata);
          n += fn(&hex[p[i] & 15], 1, fndata);
        }
        n += fn("\"", 1, fndata);
      } else if (fc == 'M') {
        mjson_vprint_fn_t vfn = va_arg(ap, mjson_vprint_fn_t);
        n += vfn(fn, fndata, &ap);
      }
      i++;
    } else {
      n += mjson_print_buf(fn, fndata, &fmt[i++], 1);
    }
  }
  va_end(xap);
  va_end(ap);
  return n;
 }
 int mjson_printf(mjson_print_fn_t fn, void *fndata, const char *fmt, ...) {
  va_list ap;
  int len;
  va_start(ap, fmt);
  len = mjson_vprintf(fn, fndata, fmt, ap);
  va_end(ap);
  return len;
 }
 #endif /* MJSON_ENABLE_PRINT */
 #if MJSON_IMPLEMENT_STRTOD
 static inline int is_digit(int c) {
  return c >= '0' && c <= '9';
 }
 /* NOTE: strtod() implementation by Yasuhiro Matsumoto. */
 double strtod(const char *str, char **end) {
  double d = 0.0;
  int sign = 1, n = 0;
  const char *p = str, *a = str;
  /* decimal part */
  if (*p == '-') {
    sign = -1;
    ++p;
  } else if (*p == '+')
    ++p;
  if (is_digit(*p)) {
    d = (double) (*p++ - '0');
    while (*p && is_digit(*p)) {
      d = d * 10.0 + (double) (*p - '0');
      ++p;
      ++n;
    }
    a = p;
  } else if (*p != '.')
    goto done;
  d *= sign;
  /* fraction part */
  if (*p == '.') {
    double f = 0.0;
    double base = 0.1;
    ++p;
    if (is_digit(*p)) {
      while (*p && is_digit(*p)) {
        f += base * (*p - '0');
        base /= 10.0;
        ++p;
        ++n;
      }
    }
    d += f * sign;
    a = p;
  }
  /* exponential part */
  if ((*p == 'E') || (*p == 'e')) {
    int e = 0;
    ++p;
    sign = 1;
    if (*p == '-') {
      sign = -1;
      ++p;
    } else if (*p == '+')
      ++p;
    if (is_digit(*p)) {
      while (*p == '0') ++p;
      e = (int) (*p++ - '0');
      while (*p && is_digit(*p)) {
        e = e * 10 + (int) (*p - '0');
        ++p;
      }
      e *= sign;
    } else if (!is_digit(*(a - 1))) {
      a = str;
      goto done;
    } else if (*p == 0)
      goto done;
    if (d == 2.2250738585072011 && e == -308) {
      d = 0.0;
      a = p;
      goto done;
    }
    if (d == 2.2250738585072012 && e <= -308) {
      d *= 1.0e-308;
      a = p;
      goto done;
    }
    {
      int i;
      for (i = 0; i < 10; i++) d *= 10;
    }
    a = p;
  } else if (p > str && !is_digit(*(p - 1))) {
    a = str;
    goto done;
  }
 done:
  if (end) *end = (char *) a;
  return d;
 }
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *s, int n, const char *s2, int n2,
                mjson_print_fn_t fn, void *userdata) {
  int koff, klen, voff, vlen, t, t2, k, off = 0, len = 0, comma = 0;
  if (n < 2) return len;
  len += fn("{", 1, userdata);
  while ((off = mjson_next(s, n, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s + koff + 1, klen - 2);
    path[klen] = '\0';
    if ((t2 = mjson_find(s2, n2, path, &val, &k)) != MJSON_TOK_INVALID) {
      if (t2 == MJSON_TOK_NULL) continue;  // null deletes the key
    } else {
      val = s + voff;  // Key is not found in the update. Copy the old value.
    }
    if (comma) len += fn(",", 1, userdata);
    len += fn(s + koff, klen, userdata);
    len += fn(":", 1, userdata);
    if (t == MJSON_TOK_OBJECT && t2 == MJSON_TOK_OBJECT) {
      len += mjson_merge(s + voff, vlen, val, k, fn, userdata);
    } else {
      if (t2 != MJSON_TOK_INVALID) vlen = k;
      len += fn(val, vlen, userdata);
    }
    comma = 1;
  }
  // Add missing keys
  off = 0;
  while ((off = mjson_next(s2, n2, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    if (t == MJSON_TOK_NULL) continue;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s2 + koff + 1, klen - 2);
    path[klen] = '\0';
    if (mjson_find(s, n, path, &val, &vlen) != MJSON_TOK_INVALID) continue;
    if (comma) len += fn(",", 1, userdata);
    len += fn(s2 + koff, klen, userdata);
    len += fn(":", 1, userdata);
    len += fn(s2 + voff, vlen, userdata);
    comma = 1;
  }
  len += fn("}", 1, userdata);
  return len;
 }
 #endif  // MJSON_ENABLE_MERGE
 #if MJSON_ENABLE_PRETTY
 struct prettydata {
  int level;
  int len;
  int prev;
  const char *pad;
  int padlen;
  mjson_print_fn_t fn;
  void *userdata;
 };
 static int pretty_cb(int ev, const char *s, int off, int len, void *ud) {
  struct prettydata *d = (struct prettydata *) ud;
  int i;
  switch (ev) {
    case '{':
    case '[':
      d->level++;
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case '}':
    case ']':
      d->level--;
      if (d->prev != '[' && d->prev != '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case ',':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      break;
    case ':':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) d->len += d->fn(" ", 1, d->userdata);
      break;
    case MJSON_TOK_KEY:
      if (d->prev == '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    default:
      if (d->prev == '[' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
  }
  d->prev = ev;
  return 0;
 }
 int mjson_pretty(const char *s, int n, const char *pad, mjson_print_fn_t fn,
                 void *userdata) {
  struct prettydata d = {0, 0, 0, pad, strlen(pad), fn, userdata};
  if (mjson(s, n, pretty_cb, &d) < 0) return -1;
  return d.len;
 }
 #endif  // MJSON_ENABLE_PRETTY
 #if MJSON_ENABLE_RPC
 struct jsonrpc_ctx jsonrpc_default_context;
 struct jsonrpc_userdata {
  mjson_print_fn_t fn;
  void *fndata;
 };
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2) {
  int i = 0, j = 0, ni = 0, nj = 0;
  while (i < n1 || j < n2) {
    if (i < n1 && j < n2 && (s1[i] == '?' || s2[j] == s1[i])) {
      i++, j++;
    } else if (i < n1 && (s1[i] == '*' || s1[i] == '#')) {
      ni = i, nj = j + 1, i++;
    } else if (nj > 0 && nj <= n2 && (s1[i - 1] == '#' || s2[j] != '/')) {
      i = ni, j = nj;
    } else {
      return 0;
    }
  }
  return 1;
 }
 static int jsonrpc_printer(const char *buf, int len, void *userdata) {
  struct jsonrpc_userdata *u = (struct jsonrpc_userdata *) userdata;
  return u->fn(buf, len, u->fndata);
 }
 void jsonrpc_return_errorv(struct jsonrpc_request *r, int code,
                           const char *message, const char *data_fmt,
                           va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata,
               "{\"id\":%.*s,\"error\":{\"code\":%d,\"message\":%Q", r->id_len,
               r->id, code, message == NULL ? "" : message);
  if (data_fmt != NULL) {
  	mjson_printf(r->fn, r->fndata, ",\"data\":");
    mjson_vprintf(r->fn, r->fndata, data_fmt, ap);
  }
  mjson_printf(r->fn, r->fndata, "}}\n");
 }
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...) {
  va_list ap;
  va_start(ap, data_fmt);
  jsonrpc_return_errorv(r, code, message, data_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_return_successv(struct jsonrpc_request *r, const char *result_fmt,
                             va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata, "{\"id\":%.*s,\"result\":", r->id_len, r->id);
  if (result_fmt != NULL) {
    mjson_vprintf(r->fn, r->fndata, result_fmt, ap);
  } else {
    mjson_printf(r->fn, r->fndata, "%s", "null");
  }
  mjson_printf(r->fn, r->fndata, "}\n");
 }
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...) {
  va_list ap;
  va_start(ap, result_fmt);
  jsonrpc_return_successv(r, result_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata) {
  const char *result = NULL, *error = NULL;
  int result_sz = 0, error_sz = 0;
  struct jsonrpc_method *m = NULL;
  struct jsonrpc_userdata d;
  struct jsonrpc_request r = {req, req_sz,           0,    0,   0, 0, 0,
                              0,   &jsonrpc_printer, NULL, NULL};
  d.fn = fn;
  d.fndata = fndata;
  r.fndata = &d;
  // Is is a response frame?
  mjson_find(req, req_sz, "$.result", &result, &result_sz);
  if (result == NULL) mjson_find(req, req_sz, "$.error", &error, &error_sz);
  if (result_sz > 0 || error_sz > 0) {
    if (ctx->response_cb != NULL) ctx->response_cb(req, req_sz, ctx->userdata);
    return;
  }
  // Method must exist and must be a string
  if (mjson_find(req, req_sz, "$.method", &r.method, &r.method_len) !=
      MJSON_TOK_STRING) {
    mjson_printf(fn, fndata, "{\"error\":{\"code\":-32700,\"message\":%.*Q}}\n",
                 req_sz, req);
    ctx->in_len = 0;
    return;
  }
  // id and params are optional
  mjson_find(req, req_sz, "$.id", &r.id, &r.id_len);
  mjson_find(req, req_sz, "$.params", &r.params, &r.params_len);
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (mjson_globmatch(m->method, m->method_sz, r.method + 1,
                        r.method_len - 2) > 0) {
      if (r.params == NULL) r.params = "";
      r.userdata = m->cbdata;
      m->cb(&r);
      break;
    }
  }
  if (m == NULL) {
    jsonrpc_return_error(&r, JSONRPC_ERROR_NOT_FOUND, "method not found", NULL);
  }
 }
 static int jsonrpc_print_methods(mjson_print_fn_t fn, void *fndata,
                                 va_list *ap) {
  struct jsonrpc_ctx *ctx = va_arg(*ap, struct jsonrpc_ctx *);
  struct jsonrpc_method *m;
  int len = 0;
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (m != ctx->methods) len += mjson_print_buf(fn, fndata, ",", 1);
    len += mjson_print_str(fn, fndata, m->method, strlen(m->method));
  }
  return len;
 }
 static void rpclist(struct jsonrpc_request *r) {
  jsonrpc_return_success(r, "[%M]", jsonrpc_print_methods, r->userdata);
 }
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t response_cb,
                      void *userdata) {
  ctx->response_cb = response_cb;
  ctx->userdata = userdata;
  jsonrpc_ctx_export(ctx, MJSON_RPC_LIST_NAME, rpclist, ctx);
 }
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *p) {
  if (ctx->in_len >= (int) sizeof(ctx->in)) ctx->in_len = 0;  // Overflow
  if (ch == '\n') {  // If new line, parse frame
    if (ctx->in_len > 1) jsonrpc_ctx_process(ctx, ctx->in, ctx->in_len, fn, p);
    ctx->in_len = 0;
  } else {
    ctx->in[ctx->in_len] = ch;  // Append to the buffer
    ctx->in_len++;
  }
 }
 void jsonrpc_init(mjson_print_fn_t response_cb, void *userdata) {
  jsonrpc_ctx_init(&jsonrpc_default_context, response_cb, userdata);
 }
 #endif  // MJSON_ENABLE_RPC
@@ -1,220 +0,0 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #ifndef MJSON_H
 #define MJSON_H
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifndef MJSON_ENABLE_PRINT
 #define MJSON_ENABLE_PRINT 1
 #endif
 #ifndef MJSON_ENABLE_RPC
 #define MJSON_ENABLE_RPC 1
 #endif
 #ifndef MJSON_ENABLE_BASE64
 #define MJSON_ENABLE_BASE64 1
 #endif
 #ifndef MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_MERGE 0
 #elif MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_PRETTY 0
 #elif MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_NEXT
 #define MJSON_ENABLE_NEXT 0
 #endif
 #ifndef MJSON_RPC_IN_BUF_SIZE
 #define MJSON_RPC_IN_BUF_SIZE 256
 #endif
 #ifndef MJSON_RPC_LIST_NAME
 #define MJSON_RPC_LIST_NAME "rpc.list"
 #endif
 #ifdef __cplusplus
 extern "C" {
 #endif
 enum {
  MJSON_ERROR_INVALID_INPUT = -1,
  MJSON_ERROR_TOO_DEEP = -2,
 };
 enum mjson_tok {
  MJSON_TOK_INVALID = 0,
  MJSON_TOK_KEY = 1,
  MJSON_TOK_STRING = 11,
  MJSON_TOK_NUMBER = 12,
  MJSON_TOK_TRUE = 13,
  MJSON_TOK_FALSE = 14,
  MJSON_TOK_NULL = 15,
  MJSON_TOK_ARRAY = 91,
  MJSON_TOK_OBJECT = 123,
 };
 #define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20)
 typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud);
 #ifndef MJSON_MAX_DEPTH
 #define MJSON_MAX_DEPTH 20
 #endif
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud);
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen);
 int mjson_get_number(const char *s, int len, const char *path, double *v);
 int mjson_get_bool(const char *s, int len, const char *path, int *v);
 int mjson_get_string(const char *s, int len, const char *path, char *to, int n);
 int mjson_get_hex(const char *s, int len, const char *path, char *to, int n);
 #if MJSON_ENABLE_NEXT
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype);
 #endif
 #if MJSON_ENABLE_BASE64
 int mjson_get_base64(const char *s, int len, const char *path, char *to, int n);
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen);
 #endif
 #if MJSON_ENABLE_PRINT
 typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata);
 typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *);
 struct mjson_fixedbuf {
  char *ptr;
  int size, len;
 };
 int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...);
 int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap);
 int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len);
 int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed);
 int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed);
 int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len);
 int mjson_print_null(const char *ptr, int len, void *userdata);
 int mjson_print_file(const char *ptr, int len, void *userdata);
 int mjson_print_fixed_buf(const char *ptr, int len, void *userdata);
 int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata);
 #if MJSON_ENABLE_PRETTY
 int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *);
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *);
 #endif
 #endif  // MJSON_ENABLE_PRINT
 #if MJSON_ENABLE_RPC
 void jsonrpc_init(mjson_print_fn_t, void *userdata);
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2);
 struct jsonrpc_request {
  const char *frame;    // Points to the whole frame
  int frame_len;        // Frame length
  const char *params;   // Points to the "params" in the request frame
  int params_len;       // Length of the "params"
  const char *id;       // Points to the "id" in the request frame
  int id_len;           // Length of the "id"
  const char *method;   // Points to the "method" in the request frame
  int method_len;       // Length of the "method"
  mjson_print_fn_t fn;  // Printer function
  void *fndata;         // Printer function data
  void *userdata;       // Callback's user data as specified at export time
 };
 struct jsonrpc_method {
  const char *method;
  int method_sz;
  void (*cb)(struct jsonrpc_request *);
  void *cbdata;
  struct jsonrpc_method *next;
 };
 // Main RPC context, stores current request information and a list of
 // exported RPC methods.
 struct jsonrpc_ctx {
  struct jsonrpc_method *methods;
  void *userdata;
  mjson_print_fn_t response_cb;
  int in_len;
  char in[MJSON_RPC_IN_BUF_SIZE];
 };
 // Registers function fn under the given name within the given RPC context
 #define jsonrpc_ctx_export(ctx, name, fn, ud)                                \
  do {                                                                       \
    static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0, 0}; \
    m.cbdata = (ud);                                                         \
    m.next = (ctx)->methods;                                                 \
    (ctx)->methods = &m;                                                     \
  } while (0)
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *);
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...);
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...);
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata);
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *fndata);
 extern struct jsonrpc_ctx jsonrpc_default_context;
 #define jsonrpc_export(name, fn, ud) \
  jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn), (ud))
 #define jsonrpc_process(buf, len, fn, data) \
  jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (data))
 #define jsonrpc_process_byte(x, fn, data) \
  jsonrpc_ctx_process_byte(&jsonrpc_default_context, (x), (fn), (data))
 #define JSONRPC_ERROR_INVALID -32700    /* Invalid JSON was received */
 #define JSONRPC_ERROR_NOT_FOUND -32601  /* The method does not exist */
 #define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */
 #define JSONRPC_ERROR_INTERNAL -32603   /* Internal JSON-RPC error */
 #endif  // MJSON_ENABLE_RPC
 #ifdef __cplusplus
 }
 #endif
 #endif  // MJSON_H
@@ -1,76 +0,0 @@
 const {h, render, Component} = preact;
 const html = htm.bind(h);
 const Info = () => html`<div id="info">
  This dashboard shows values kept in server memory. Many clients
  can open this page. As soon as any client changes any value,
  all clients update automatically.
  <br/><br/>
  The JS code that watches state changes, reconnects on network failures.
  That means if server restarts, dashboard on all connected clients
  refresh automatically.
  <br/><br/>
  You can use <code>curl</code> command-line utility:
  <br/><code>curl localhost:8000/api/config/get</code>
  <br/><code>curl localhost:8000/api/config/watch</code>
  <br/><code>curl localhost:8000/api/config/set -d '{"a":123}'</code>
 </div>`;
 class Dashboard extends Component {
  state = {value1: null, value2: null};
  componentDidMount() {
    axios.get('/api/config/get')
        .then(r => this.setState(r.data))
        .catch(e => console.log(e));
    var self = this;
    var f = function(reader) {
      return reader.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        self.setState(JSON.parse(data));
        // console.log(JSON.parse(data));
        if (!result.done) return f(reader);
      });
    };
    fetch('/api/config/watch')
        .then(r => r.body.getReader())
        .then(f)
        .catch(e => setTimeout(x => self.componentDidMount(), 1000));
  }
  render(props, state) {
    return html
    `<div id="dashboard" style="display: flex; justify-content: flex-evenly;">
        <div style="width:50%;text-align:center;">Value 1 (number):
          <div style="font-size:140%;"><b>${state.value1}</b></div></div>
        <div style="width:50%;text-align:center;">Value 2 (string):
          <div style="font-size:140%;"><b>${state.value2}</b></div></div>
    </div>`
  }
 };
 class Form extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 const App = () => html`<div id="container">
  <${Info} />
  <${Dashboard} />
  <${Form} />
 </div>`;
 window.onload = () => render(h(App), document.body);
@@ -1,9 +0,0 @@
 /* axios v0.19.0-beta.1 | (c) 2018 by Matt Zabriskie */
 !function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(5),a=n(22),u=n(11),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(10),c.all=function(e){return Promise.all(e)},c.spread=n(25),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===j.call(e)}function o(e){return"[object ArrayBuffer]"===j.call(e)}function s(e){return"undefined"!=typeof FormData&&e instanceof FormData}function i(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function a(e){return"string"==typeof e}function u(e){return"number"==typeof e}function c(e){return"undefined"==typeof e}function f(e){return null!==e&&"object"==typeof e}function p(e){return"[object Date]"===j.call(e)}function d(e){return"[object File]"===j.call(e)}function l(e){return"[object Blob]"===j.call(e)}function h(e){return"[object Function]"===j.call(e)}function m(e){return f(e)&&h(e.pipe)}function y(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function g(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function x(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product&&"NativeScript"!==navigator.product&&"NS"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function v(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var s in e)Object.prototype.hasOwnProperty.call(e,s)&&t.call(null,e[s],s,e)}function w(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=w(t[n],e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function b(){function e(e,n){"object"==typeof t[n]&&"object"==typeof e?t[n]=b(t[n],e):"object"==typeof e?t[n]=b({},e):t[n]=e}for(var t={},n=0,r=arguments.length;n<r;n++)v(arguments[n],e);return t}function E(e,t,n){return v(t,function(t,r){n&&"function"==typeof t?e[r]=S(t,n):e[r]=t}),e}var S=n(3),R=n(4),j=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:o,isBuffer:R,isFormData:s,isArrayBufferView:i,isString:a,isNumber:u,isObject:f,isUndefined:c,isDate:p,isFile:d,isBlob:l,isFunction:h,isStream:m,isURLSearchParams:y,isStandardBrowserEnv:x,forEach:v,merge:w,deepMerge:b,extend:E,trim:g}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t){/*!
 	 * Determine if an object is a Buffer
 	 *
 	 * @author   Feross Aboukhadijeh <https://feross.org>
 	 * @license  MIT
 	 */
 e.exports=function(e){return null!=e&&null!=e.constructor&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}},function(e,t,n){"use strict";function r(e){this.defaults=e,this.interceptors={request:new i,response:new i}}var o=n(2),s=n(6),i=n(7),a=n(8),u=n(22);r.prototype.request=function(e){"string"==typeof e?(e=arguments[1]||{},e.url=arguments[0]):e=e||{},e=u(this.defaults,e),e.method=e.method?e.method.toLowerCase():"get";var t=[a,void 0],n=Promise.resolve(e);for(this.interceptors.request.forEach(function(e){t.unshift(e.fulfilled,e.rejected)}),this.interceptors.response.forEach(function(e){t.push(e.fulfilled,e.rejected)});t.length;)n=n.then(t.shift(),t.shift());return n},r.prototype.getUri=function(e){return e=u(this.defaults,e),s(e.url,e.params,e.paramsSerializer).replace(/^\?/,"")},o.forEach(["delete","get","head","options"],function(e){r.prototype[e]=function(t,n){return this.request(o.merge(n||{},{method:e,url:t}))}}),o.forEach(["post","put","patch"],function(e){r.prototype[e]=function(t,n,r){return this.request(o.merge(r||{},{method:e,url:t,data:n}))}}),e.exports=r},function(e,t,n){"use strict";function r(e){return encodeURIComponent(e).replace(/%40/gi,"@").replace(/%3A/gi,":").replace(/%24/g,"$").replace(/%2C/gi,",").replace(/%20/g,"+").replace(/%5B/gi,"[").replace(/%5D/gi,"]")}var o=n(2);e.exports=function(e,t,n){if(!t)return e;var s;if(n)s=n(t);else if(o.isURLSearchParams(t))s=t.toString();else{var i=[];o.forEach(t,function(e,t){null!==e&&"undefined"!=typeof e&&(o.isArray(e)?t+="[]":e=[e],o.forEach(e,function(e){o.isDate(e)?e=e.toISOString():o.isObject(e)&&(e=JSON.stringify(e)),i.push(r(t)+"="+r(e))}))}),s=i.join("&")}return s&&(e+=(e.indexOf("?")===-1?"?":"&")+s),e}},function(e,t,n){"use strict";function r(){this.handlers=[]}var o=n(2);r.prototype.use=function(e,t){return this.handlers.push({fulfilled:e,rejected:t}),this.handlers.length-1},r.prototype.eject=function(e){this.handlers[e]&&(this.handlers[e]=null)},r.prototype.forEach=function(e){o.forEach(this.handlers,function(t){null!==t&&e(t)})},e.exports=r},function(e,t,n){"use strict";function r(e){e.cancelToken&&e.cancelToken.throwIfRequested()}var o=n(2),s=n(9),i=n(10),a=n(11),u=n(20),c=n(21);e.exports=function(e){r(e),e.baseURL&&!u(e.url)&&(e.url=c(e.baseURL,e.url)),e.headers=e.headers||{},e.data=s(e.data,e.headers,e.transformRequest),e.headers=o.merge(e.headers.common||{},e.headers[e.method]||{},e.headers||{}),o.forEach(["delete","get","head","post","put","patch","common"],function(t){delete e.headers[t]});var t=e.adapter||a.adapter;return t(e).then(function(t){return r(e),t.data=s(t.data,t.headers,e.transformResponse),t},function(t){return i(t)||(r(e),t&&t.response&&(t.response.data=s(t.response.data,t.response.headers,e.transformResponse))),Promise.reject(t)})}},function(e,t,n){"use strict";var r=n(2);e.exports=function(e,t,n){return r.forEach(n,function(n){e=n(e,t)}),e}},function(e,t){"use strict";e.exports=function(e){return!(!e||!e.__CANCEL__)}},function(e,t,n){"use strict";function r(e,t){!s.isUndefined(e)&&s.isUndefined(e["Content-Type"])&&(e["Content-Type"]=t)}function o(){var e;return"undefined"!=typeof process&&"[object process]"===Object.prototype.toString.call(process)?e=n(13):"undefined"!=typeof XMLHttpRequest&&(e=n(13)),e}var s=n(2),i=n(12),a={"Content-Type":"application/x-www-form-urlencoded"},u={adapter:o(),transformRequest:[function(e,t){return i(t,"Accept"),i(t,"Content-Type"),s.isFormData(e)||s.isArrayBuffer(e)||s.isBuffer(e)||s.isStream(e)||s.isFile(e)||s.isBlob(e)?e:s.isArrayBufferView(e)?e.buffer:s.isURLSearchParams(e)?(r(t,"application/x-www-form-urlencoded;charset=utf-8"),e.toString()):s.isObject(e)?(r(t,"application/json;charset=utf-8"),JSON.stringify(e)):e}],transformResponse:[function(e){if("string"==typeof e)try{e=JSON.parse(e)}catch(e){}return e}],timeout:0,xsrfCookieName:"XSRF-TOKEN",xsrfHeaderName:"X-XSRF-TOKEN",maxContentLength:-1,validateStatus:function(e){return e>=200&&e<300}};u.headers={common:{Accept:"application/json, text/plain, */*"}},s.forEach(["delete","get","head"],function(e){u.headers[e]={}}),s.forEach(["post","put","patch"],function(e){u.headers[e]=s.merge(a)}),e.exports=u},function(e,t,n){"use strict";var r=n(2);e.exports=function(e,t){r.forEach(e,function(n,r){r!==t&&r.toUpperCase()===t.toUpperCase()&&(e[t]=n,delete e[r])})}},function(e,t,n){"use strict";var r=n(2),o=n(14),s=n(6),i=n(17),a=n(18),u=n(15);e.exports=function(e){return new Promise(function(t,c){var f=e.data,p=e.headers;r.isFormData(f)&&delete p["Content-Type"];var d=new XMLHttpRequest;if(e.auth){var l=e.auth.username||"",h=e.auth.password||"";p.Authorization="Basic "+btoa(l+":"+h)}if(d.open(e.method.toUpperCase(),s(e.url,e.params,e.paramsSerializer),!0),d.timeout=e.timeout,d.onreadystatechange=function(){if(d&&4===d.readyState&&(0!==d.status||d.responseURL&&0===d.responseURL.indexOf("file:"))){var n="getAllResponseHeaders"in d?i(d.getAllResponseHeaders()):null,r=e.responseType&&"text"!==e.responseType?d.response:Line truncated
 //# sourceMappingURL=axios.min.map
@@ -1 +0,0 @@
 !function(){function n(n){var t=e.get(this);return t||(t=new Map,e.set(this,t)),1<(t=a(this,t.get(n)||(t.set(n,t=function(n){function t(n){1===u&&(n||(r=r.replace(/^\s*\n\s*|\s*\n\s*$/g,"")))?p.push(0,n,r):3===u&&(n||r)?(p.push(3,n,r),u=2):2===u&&"..."===r&&n?p.push(4,n,0):2===u&&r&&!n?p.push(5,0,!0,r):5<=u&&((r||!n&&5===u)&&(p.push(u,0,r,s),u=6),n&&(p.push(u,n,0,s),u=6)),r=""}for(var e,s,u=1,r="",h="",p=[0],a=0;a<n.length;a++){a&&(1===u&&t(),t(a));for(var o=0;o<n[a].length;o++)e=n[a][o],1===u?"<"===e?(t(),p=[p],u=3):r+=e:4===u?r="--"===r&&">"===e?(u=1,""):e+r[0]:h?e===h?h="":r+=e:'"'===e||"'"===e?h=e:">"===e?(t(),u=1):u&&("="===e?(u=5,s=r,r=""):"/"===e&&(u<5||">"===n[a][o+1])?(t(),3===u&&(p=p[0]),(p=(u=p)[0]).push(2,0,u),u=0):" "===e||"\t"===e||"\n"===e||"\r"===e?(t(),u=2):r+=e),3===u&&"!--"===r&&(u=4,p=p[0])}return t(),p}(n)),t),arguments,[])).length?t:t[0]}var a=function(n,t,e,s){var u;t[0]=0;for(var r=1;r<t.length;r++){var h=t[r++],p=t[r]?(t[0]|=h?1:2,e[t[r++]]):t[++r];3===h?s[0]=p:4===h?s[1]=Object.assign(s[1]||{},p):5===h?(s[1]=s[1]||{})[t[++r]]=p:6===h?s[1][t[++r]]+=p+"":h?(u=n.apply(p,a(n,p,e,["",null])),s.push(u),p[0]?t[0]|=2:(t[r-2]=0,t[r]=u)):s.push(p)}return s},e=new Map;"undefined"!=typeof module?module.exports=n:self.htm=n}();
@@ -1,18 +0,0 @@
 function linkState(component, key, eventPath) {
  let path = key.split('.'), cache = component.__lsc || (component.__lsc = {});
  return cache[key + eventPath] || (cache[key + eventPath] = function(e) {
           let t = e && e.target || this, state = {}, obj = state,
               v = typeof eventPath === 'string' ?
               delve(e, eventPath) :
               t.nodeName ? (t.type.match(/^che|rad/) ? t.checked : t.value) :
                            e,
               i = 0;
           for (; i < path.length - 1; i++) {
             obj = obj[path[i]] ||
                 (obj[path[i]] = !i && component.state[path[i]] || {});
           }
           obj[path[i]] = v;
           component.setState(state);
         });
 }
@@ -1,2 +0,0 @@
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u&&"dangerouslySetInnerHTML"!==l&&(l!==(l=l.replace(/^xlink:?/,""))?null==u||!1===u?n.removeAttributeNS("http://www.w3.org/1999/xlink",l.toLowerCase()):n.setAttributeNS("http://www.w3.org/1999/xlink",l.toLowerCase(),u):null==u||!1===u&&!/^ar/.test(l)?n.removeAttribute(l):n.setAttribute(l,u))}function P(l){this.l[l.type](n.event?n.event(l):l)}function E(n,l,u){var t,i;for(t=0;t<n.__k.length;t++)(i=n.__k[t])&&(i.__=n,i.__e&&("function"==typeof i.type&&i.__k.length>1&&E(i,l,u),l=b(u,i,i,n.__k,null,i.__e,l),"function"==typeof n.type&&(n.__d=l)))}function N(l,u,t,i,o,r,e,f,c){var a,v,h,y,_,m,k,w,b,x,C,A=u.type;if(void 0!==u.constructor)return null;(a=n.__b)&&a(u);try{n:if("function"==typeof A){if(w=u.props,b=(a=A.contextType)&&i[a.__c],x=a?b?b.props.value:a.__:i,t.__c?k=(v=u.__c=t.__c).__=v.__E:("prototype"in A&&A.prototype.render?u.__c=v=new A(w,x):(u.__c=v=new 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 //# sourceMappingURL=preact.min.js.map
@@ -1,6 +0,0 @@
 #container { margin-right: auto; margin-left: auto; max-width: 480px; }
 #info { background: #d0f0f0; border-radius: .5em; padding: 2em;  }
 #dashboard { background: #f0f0f0; border-radius: .5em; padding: 0.5em; max-height: 10em; overflow: auto; height: 100%; margin-top: 1em; }
 #form { background: #d0c0f0; border-radius: .5em; padding: 0.5em; max-height: 10em; overflow: auto; height: 100%; margin-top: 1em; }
 button { width: 100%; }
 button, select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
@@ -1,30 +0,0 @@
 PROG ?= example
 ROOT ?= $(realpath $(CURDIR)/../..)
 DEFS ?= -DMG_ENABLE_LINES=1 -DMG_ENABLE_DIRECTORY_LISTING=1
 CFLAGS ?= -I../.. -W -Wall -DMG_ENABLE_IPV6=1 $(DEFS) $(EXTRA)
 VCFLAGS = /nologo /W3 /O2 /I../.. $(DEFS) $(EXTRA)
 VC98 = docker run --rm -e WINEDEBUG=-all -v $(ROOT):$(ROOT) -w $(CURDIR) docker.io/mdashnet/vc98
 GCC = docker run --rm -v $(ROOT):$(ROOT) -w $(CURDIR) mdashnet/cc2
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c main.c -I../.. $(CFLAGS) $(EXTRA) -o $@
 mongoose_mac: $(PROG)
 	cp $(PROG) $@
 mongoose_linux: main.c
 	$(GCC) $(CC) ../../mongoose.c main.c $(CFLAGS) -o $@
 mongoose.exe: main.c
 	$(VC98) wine cl ../../mongoose.c main.c $(VCFLAGS) ws2_32.lib /Fe$@
 zip: mongoose.exe mongoose_linux mongoose_mac
 	rm -rf mongoose; mkdir mongoose
 	cp mongoose.exe mongoose_mac mongoose_linux mongoose
 	zip -r mongoose.zip mongoose
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.*
@@ -1,71 +0,0 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 static const char *s_debug_level = "2";
 static const char *s_web_root_dir = ".";
 static const char *s_listening_address = "http://localhost:8000";
 static const char *s_enable_hexdump = "no";
 static const char *s_rewrites = "";
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    // struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    mg_http_serve_dir(c, ev_data, s_web_root_dir);
  }
  (void) fn_data;
 }
 static void usage(const char *prog) {
  fprintf(stderr,
          "Mongoose v.%s, built " __DATE__ " " __TIME__
          "\nUsage: %s OPTIONS\n"
          "  -D LEVEL  - debug level, from 0 to 4, default: '%s'\n"
          "  -H yes|no - enable traffic hexdump, default: '%s'\n"
          "  -d DIR    - directory to serve, default: '%s'\n"
          "  -l ADDR   - listening address, default: '%s'\n"
          "  -r LIST   - list of URI=DIR,... URI rewrites, default: '%s'\n",
          MG_VERSION, prog, s_debug_level, s_enable_hexdump, s_web_root_dir,
          s_listening_address, s_rewrites);
  exit(EXIT_FAILURE);
 }
 int main(int argc, char *argv[]) {
  struct mg_mgr mgr;
  struct mg_connection *c;
  int i;
  // Parse command-line flags
  for (i = 1; i < argc; i++) {
    if (strcmp(argv[i], "-d") == 0) {
      s_web_root_dir = argv[++i];
    } else if (strcmp(argv[i], "-D") == 0) {
      s_debug_level = argv[++i];
    } else if (strcmp(argv[i], "-H") == 0) {
      s_enable_hexdump = argv[++i];
    } else if (strcmp(argv[i], "-l") == 0) {
      s_listening_address = argv[++i];
    } else if (strcmp(argv[i], "-r") == 0) {
      s_rewrites = argv[++i];
    } else {
      usage(argv[0]);
    }
  }
  // Initialise stuff
  mg_log_set(s_debug_level);
  mg_mgr_init(&mgr);
  if ((c = mg_http_listen(&mgr, s_listening_address, cb, &mgr)) == NULL) {
    LOG(LL_ERROR, ("Cannot listen on %s. Use http://ADDR:PORT or :PORT",
                   s_listening_address));
    exit(EXIT_FAILURE);
  }
  if (mg_casecmp(s_enable_hexdump, "yes") == 0) c->is_hexdumping = 1;
  // Start infinite event loop
  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
  for (;;) mg_mgr_poll(&mgr, 1000);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1,47 @@
 PROG ?= example                   # Program we are building
 PACK ?= ./pack                    # Packing executable
 DELETE = rm -rf                   # Command to remove files
 OUT ?= -o $(PROG)                 # Compiler argument for output file
 SOURCES = main.c mongoose.c net.c packed_fs.c      # Source code files
 CFLAGS = -W -Wall -Wextra -g -I.  # Build options
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
 CFLAGS_MONGOOSE += -DMG_ENABLE_PACKED_FS=1
 FILES_TO_EMBED ?= $(wildcard web_root/*)
 ifeq ($(OS),Windows_NT)   # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD OUT=/Feprog.exe
  PROG ?= example.exe           # Use .exe suffix for the binary
  PACK = pack.exe               # Packing executable
  CC = gcc                      # Use MinGW gcc compiler
  CFLAGS += -lws2_32            # Link against Winsock library
  DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
  OUT ?= -o $(PROG)             # Build output
  MAKE += WINDOWS=1 CC=$(CC)
 endif
 all: $(PROG)              # Default target. Build and run program
 	$(RUN) ./$(PROG) $(ARGS)
 # Before embedding files, gzip them to save space
 packed_fs.c: $(FILES_TO_EMBED) Makefile
 	$(CC) ../../test/pack.c -o $(PACK)
 ifeq ($(OS),Windows_NT)
 	$(PACK) $(FILES_TO_EMBED) > $@
 else
 	rm -rf tmp/web_root && mkdir tmp && cp -r web_root tmp/
 	find tmp -type f | xargs -n1 gzip
 	cd tmp && ../pack `find web_root -type f` > ../$@
 endif
 $(PROG): $(SOURCES)       # Build program from sources
 	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) $(OUT)
 clean:                    # Cleanup. Delete built program and all build artifacts
 	$(DELETE) $(PROG) *.o *.obj *.exe *.dSYM pack tmp mbedtls
 # see https://mongoose.ws/tutorials/tls/#how-to-build for TLS build options
 mbedtls:                  # Pull and build mbedTLS library
 	git clone --depth 1 -b v2.28.2 https://github.com/mbed-tls/mbedtls $@
 	$(MAKE) -C mbedtls/library
@@ -0,0 +1,29 @@
 # A complete device dashboard
 This example is a demonstration of how Mongoose Library could be integrated
 into an embedded device and provide a complete device dashboard with the
 following features:
 - Authentication: login-protected dashboard
 - Multiple logins with different permissions (admin and user)
 - Web UI is fully embedded into the server/firmware binary, and does not
  need a filesystem to serve it. UI is resilient to FS problems
 - Administrators can change server settings
 - All changes are propagated to all connected clients
 - The device is connected to the external MQTT server
 - Logged in clients can send/receive messages via MQTT
 ## Screenshots
 This is a login screen that prompts for user/password
 ![](screenshots/login.webp)
 ## Main dashboard
 The main dashboard page shows the interactive MQTT console
 ![](screenshots/dashboard.webp)
 See a detailed tutorial at https://mongoose.ws/tutorials/device-dashboard/
@@ -0,0 +1 @@
 ../../test/data/ca.pem
@@ -0,0 +1,24 @@
 // Copyright (c) 2020-2022 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 const char *s_listening_url = "http://0.0.0.0:8000";
 const char *s_listening_surl = "https://0.0.0.0:8443";
 void device_dashboard_fn(struct mg_connection *, int, void *, void *);
 int main(void) {
  struct mg_mgr mgr;
  mg_log_set(MG_LL_DEBUG);  // Set debug log level
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, s_listening_url, device_dashboard_fn, NULL);
  MG_INFO(("Listening on %s", s_listening_url));
 #if MG_ENABLE_MBEDTLS || MG_ENABLE_OPENSSL
  mg_http_listen(&mgr, s_listening_surl, device_dashboard_fn, "");
  MG_INFO(("Listening on %s", s_listening_surl));
 #endif
  while (mgr.conns != NULL) mg_mgr_poll(&mgr, 500);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1 @@
 ../../mongoose.c
@@ -0,0 +1 @@
 ../../mongoose.h
@@ -0,0 +1,284 @@
 // Copyright (c) 2020-2022 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 #if !defined(MQTT_SERVER)
 #if MG_ENABLE_MBEDTLS || MG_ENABLE_OPENSSL
 #define MQTT_SERVER "mqtts://broker.hivemq.com:8883"
 #else
 #define MQTT_SERVER "mqtt://broker.hivemq.com:1883"
 #endif
 #endif
 #define MQTT_PUBLISH_TOPIC "mg/my_device"
 #define MQTT_SUBSCRIBE_TOPIC "mg/#"
 // Certificate generation procedure:
 // openssl ecparam -name prime256v1 -genkey -noout -out key.pem
 // openssl req -new -key key.pem -x509 -nodes -days 3650 -out cert.pem
 static const char *s_ssl_cert =
    "-----BEGIN CERTIFICATE-----\n"
    "MIIBCTCBsAIJAK9wbIDkHnAoMAoGCCqGSM49BAMCMA0xCzAJBgNVBAYTAklFMB4X\n"
    "DTIzMDEyOTIxMjEzOFoXDTMzMDEyNjIxMjEzOFowDTELMAkGA1UEBhMCSUUwWTAT\n"
    "BgcqhkjOPQIBBggqhkjOPQMBBwNCAARzSQS5OHd17lUeNI+6kp9WYu0cxuEIi/JT\n"
    "jphbCmdJD1cUvhmzM9/phvJT9ka10Z9toZhgnBq0o0xfTQ4jC1vwMAoGCCqGSM49\n"
    "BAMCA0gAMEUCIQCe0T2E0GOiVe9KwvIEPeX1J1J0T7TNacgR0Ya33HV9VgIgNvdn\n"
    "aEWiBp1xshs4iz6WbpxrS1IHucrqkZuJLfNZGZI=\n"
    "-----END CERTIFICATE-----\n";
 static const char *s_ssl_key =
    "-----BEGIN EC PRIVATE KEY-----\n"
    "MHcCAQEEICBz3HOkQLPBDtdknqC7k1PNsWj6HfhyNB5MenfjmqiooAoGCCqGSM49\n"
    "AwEHoUQDQgAEc0kEuTh3de5VHjSPupKfVmLtHMbhCIvyU46YWwpnSQ9XFL4ZszPf\n"
    "6YbyU/ZGtdGfbaGYYJwatKNMX00OIwtb8A==\n"
    "-----END EC PRIVATE KEY-----\n";
 static time_t s_boot_timestamp = 0;  // Updated by SNTP
 #ifndef DISABLE_ROUTING
 static struct mg_connection *s_sntp_conn = NULL;  // SNTP connection
 #endif
 // Define a system time alternative
 time_t ourtime(time_t *tp) {
  time_t t = s_boot_timestamp + (time_t) (mg_millis() / 1000);
  if (tp != NULL) *tp = t;
  return t;
 }
 // Authenticated user.
 // A user can be authenticated by:
 //   - a name:pass pair
 //   - a token
 // When a user is shown a login screen, she enters a user:pass. If successful,
 // a server returns user info which includes token. From that point on,
 // client can use token for authentication. Tokens could be refreshed/changed
 // on a server side, forcing clients to re-login.
 struct user {
  const char *name, *pass, *token;
 };
 // This is a configuration structure we're going to show on a dashboard
 static struct config {
  char *url, *pub, *sub;  // MQTT settings
 } s_config;
 static struct mg_connection *s_mqtt = NULL;  // MQTT connection
 static bool s_connected = false;             // MQTT connection established
 // Try to update a single configuration value
 static void update_config(struct mg_str *body, const char *name, char **value) {
  char buf[256];
  if (mg_http_get_var(body, name, buf, sizeof(buf)) > 0) {
    free(*value);
    *value = strdup(buf);
  }
 }
 // Parse HTTP requests, return authenticated user or NULL
 static struct user *getuser(struct mg_http_message *hm) {
  // In production, make passwords strong and tokens randomly generated
  // In this example, user list is kept in RAM. In production, it can
  // be backed by file, database, or some other method.
  static struct user users[] = {
      {"admin", "pass0", "admin_token"},
      {"user1", "pass1", "user1_token"},
      {"user2", "pass2", "user2_token"},
      {NULL, NULL, NULL},
  };
  char user[256], pass[256];
  struct user *u;
  mg_http_creds(hm, user, sizeof(user), pass, sizeof(pass));
  if (user[0] != '\0' && pass[0] != '\0') {
    // Both user and password is set, search by user/password
    for (u = users; u->name != NULL; u++)
      if (strcmp(user, u->name) == 0 && strcmp(pass, u->pass) == 0) return u;
  } else if (user[0] == '\0') {
    // Only password is set, search by token
    for (u = users; u->name != NULL; u++)
      if (strcmp(pass, u->token) == 0) return u;
  }
  return NULL;
 }
 // Notify all config watchers about the config change
 static void send_notification(struct mg_mgr *mgr, const char *fmt, ...) {
  struct mg_connection *c;
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->data[0] == 'W') {
      va_list ap;
      va_start(ap, fmt);
      mg_ws_vprintf(c, WEBSOCKET_OP_TEXT, fmt, &ap);
      va_end(ap);
    }
  }
 }
 // Send simulated metrics data to the dashboard, for chart rendering
 static void timer_metrics_fn(void *param) {
  send_notification(param, "{%m:%m,%m:[%lu, %d]}", MG_ESC("name"),
                    MG_ESC("metrics"), MG_ESC("data"),
                    (unsigned long) ourtime(NULL),
                    10 + (int) ((double) rand() * 10 / RAND_MAX));
 }
 #ifndef DISABLE_ROUTING
 // MQTT event handler function
 static void mqtt_fn(struct mg_connection *c, int ev, void *ev_data, void *fnd) {
  if (ev == MG_EV_CONNECT && mg_url_is_ssl(s_config.url)) {
    struct mg_tls_opts opts = {.ca = "ca.pem",
                               .srvname = mg_url_host(s_config.url)};
    mg_tls_init(c, &opts);
  } else if (ev == MG_EV_MQTT_OPEN) {
    s_connected = true;
    c->is_hexdumping = 1;
    struct mg_mqtt_opts sub_opts;
    memset(&sub_opts, 0, sizeof(sub_opts));
    sub_opts.topic = mg_str(s_config.sub);
    sub_opts.qos = 2;
    mg_mqtt_sub(s_mqtt, &sub_opts);
    send_notification(c->mgr, "{%m:%m,%m:null}", MG_ESC("name"),
                      MG_ESC("config"), MG_ESC("data"));
    MG_INFO(("MQTT connected, server %s", MQTT_SERVER));
  } else if (ev == MG_EV_MQTT_MSG) {
    struct mg_mqtt_message *mm = ev_data;
    send_notification(
        c->mgr, "{%m:%m,%m:{%m: %m, %m: %m, %m: %d}}", MG_ESC("name"),
        MG_ESC("message"), MG_ESC("data"), MG_ESC("topic"), mg_print_esc,
        (int) mm->topic.len, mm->topic.ptr, MG_ESC("data"), mg_print_esc,
        (int) mm->data.len, mm->data.ptr, MG_ESC("qos"), (int) mm->qos);
  } else if (ev == MG_EV_MQTT_CMD) {
    struct mg_mqtt_message *mm = (struct mg_mqtt_message *) ev_data;
    MG_DEBUG(("%lu cmd %d qos %d", c->id, mm->cmd, mm->qos));
  } else if (ev == MG_EV_CLOSE) {
    s_mqtt = NULL;
    if (s_connected) {
      s_connected = false;
      send_notification(c->mgr, "{%m:%m,%m:null}", MG_ESC("name"),
                        MG_ESC("config"), MG_ESC("data"));
    }
  }
  (void) fnd;
 }
 // Keep MQTT connection open - reconnect if closed
 static void timer_mqtt_fn(void *param) {
  struct mg_mgr *mgr = (struct mg_mgr *) param;
  if (s_mqtt == NULL) {
    struct mg_mqtt_opts opts;
    memset(&opts, 0, sizeof(opts));
    s_mqtt = mg_mqtt_connect(mgr, s_config.url, &opts, mqtt_fn, NULL);
  }
 }
 // SNTP connection event handler. When we get a response from an SNTP server,
 // adjust s_boot_timestamp. We'll get a valid time from that point on
 static void sfn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_SNTP_TIME) {
    uint64_t t = *(uint64_t *) ev_data;
    s_boot_timestamp = (time_t) ((t - mg_millis()) / 1000);
    c->is_closing = 1;
  } else if (ev == MG_EV_CLOSE) {
    s_sntp_conn = NULL;
  }
  (void) fn_data;
 }
 static void timer_sntp_fn(void *param) {  // SNTP timer function. Sync up time
  struct mg_mgr *mgr = (struct mg_mgr *) param;
  if (s_sntp_conn == NULL && s_boot_timestamp == 0) {
    s_sntp_conn = mg_sntp_connect(mgr, NULL, sfn, NULL);
  }
 }
 #endif
 // HTTP request handler function
 void device_dashboard_fn(struct mg_connection *c, int ev, void *ev_data,
                         void *fn_data) {
  if (ev == MG_EV_OPEN && c->is_listening) {
    mg_timer_add(c->mgr, 1000, MG_TIMER_REPEAT, timer_metrics_fn, c->mgr);
 #ifndef DISABLE_ROUTING
    mg_timer_add(c->mgr, 1000, MG_TIMER_REPEAT, timer_mqtt_fn, c->mgr);
    mg_timer_add(c->mgr, 1000, MG_TIMER_REPEAT, timer_sntp_fn, c->mgr);
 #endif
    s_config.url = strdup(MQTT_SERVER);
    s_config.pub = strdup(MQTT_PUBLISH_TOPIC);
    s_config.sub = strdup(MQTT_SUBSCRIBE_TOPIC);
  } else if (ev == MG_EV_ACCEPT && fn_data != NULL) {
    struct mg_tls_opts opts = {.cert = s_ssl_cert, .certkey = s_ssl_key};
    mg_tls_init(c, &opts);
  } else if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    struct user *u = getuser(hm);
    // MG_INFO(("%p [%.*s] auth %s", c->fd, (int) hm->uri.len, hm->uri.ptr,
    // u ? u->name : "NULL"));
    if (mg_http_match_uri(hm, "/api/hi")) {
      mg_http_reply(c, 200, "", "hi\n");  // Testing endpoint
    } else if (mg_http_match_uri(hm, "/api/debug")) {
      int level = mg_json_get_long(hm->body, "$.level", MG_LL_DEBUG);
      mg_log_set(level);
      mg_http_reply(c, 200, "", "Debug level set to %d\n", level);
    } else if (u == NULL && mg_http_match_uri(hm, "/api/#")) {
      // All URIs starting with /api/ must be authenticated
      mg_http_reply(c, 403, "", "Denied\n");
    } else if (mg_http_match_uri(hm, "/api/config/get")) {
 #ifdef DISABLE_ROUTING
      mg_http_reply(c, 200, NULL, "{%m:%m,%m:%m,%m:%m}\n", MG_ESC("url"),
                    MG_ESC(s_config.url), MG_ESC("pub"), MG_ESC(s_config.pub),
                    MG_ESC("sub"), MG_ESC(s_config.sub));
 #else
      mg_http_reply(c, 200, NULL, "{%m:%m,%m:%m,%m:%m,%m:%s}\n", MG_ESC("url"),
                    MG_ESC(s_config.url), MG_ESC("pub"), MG_ESC(s_config.pub),
                    MG_ESC("sub"), MG_ESC(s_config.sub), MG_ESC("connected"),
                    s_connected ? "true" : "false");
 #endif
    } else if (mg_http_match_uri(hm, "/api/config/set")) {
      // Admins only
      if (strcmp(u->name, "admin") == 0) {
        update_config(&hm->body, "url", &s_config.url);
        update_config(&hm->body, "pub", &s_config.pub);
        update_config(&hm->body, "sub", &s_config.sub);
        if (s_mqtt) s_mqtt->is_closing = 1;  // Ask to disconnect from MQTT
        send_notification(c->mgr, "{%m:%m,%m:null}", MG_ESC("name"),
                          MG_ESC("config"), MG_ESC("data"));
        mg_http_reply(c, 200, "", "ok\n");
      } else {
        mg_http_reply(c, 403, "", "Denied\n");
      }
    } else if (mg_http_match_uri(hm, "/api/message/send")) {
      char buf[256];
      if (s_connected &&
          mg_http_get_var(&hm->body, "message", buf, sizeof(buf)) > 0) {
        struct mg_mqtt_opts pub_opts;
        memset(&pub_opts, 0, sizeof(pub_opts));
        pub_opts.topic = mg_str(s_config.pub);
        pub_opts.message = mg_str(buf);
        pub_opts.qos = 2, pub_opts.retain = false;
        mg_mqtt_pub(s_mqtt, &pub_opts);
      }
      mg_http_reply(c, 200, "", "ok\n");
    } else if (mg_http_match_uri(hm, "/api/watch")) {
      c->data[0] = 'W';  // Mark ourselves as a event listener
      mg_ws_upgrade(c, hm, NULL);
    } else if (mg_http_match_uri(hm, "/api/login")) {
      mg_http_reply(c, 200, NULL, "{%m:%m,%m:%m}\n", MG_ESC("user"),
                    MG_ESC(u->name), MG_ESC("token"), MG_ESC(u->token));
    } else {
      struct mg_http_serve_opts opts;
      memset(&opts, 0, sizeof(opts));
 #if 1
      opts.root_dir = "/web_root";
      opts.fs = &mg_fs_packed;
 #else
      opts.root_dir = "web_root";
 #endif
      mg_http_serve_dir(c, ev_data, &opts);
    }
    MG_DEBUG(("%lu %.*s %.*s -> %.*s", c->id, (int) hm->method.len,
              hm->method.ptr, (int) hm->uri.len, hm->uri.ptr, (int) 3,
              &c->send.buf[9]));
  }
 }
@@ -1,16 +1,12 @@
 <!DOCTYPE html>
 <html lang="en">
  <head>
-    <title>example</title>
+    <title>Device Dashboard</title>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <script src="preact.min.js"></script>
    <script src="htm.min.js"></script>
    <script src="linkstate.min.js"></script>
    <script src="axios.min.js"></script>
    <script src="app.js"></script>
  </head>
  <body></body>
  <script type="module" src="main.js"></script>
 </html>
@@ -0,0 +1,385 @@
 'use strict';
 import {Component, h, html, render, useEffect, useState, useRef} from './preact.min.js';
 var devaddr = "address:port";
 const MaxMetricsDataPoints = 50;
 // This simple publish/subscribe is used to pass notifications that were
 // received from the server, to all child components of the app.
 var PubSub = (function() {
  var handlers = {}, id = 0;
  return {
    subscribe: function(fn) {
      handlers[id++] = fn;
    },
    unsubscribe: function(id) {
      delete handlers[id];
    },
    publish: function(data) {
      for (var k in handlers) handlers[k](data);
    }
  };
 })();
 const Nav = props => html`
 <div style="background: #333; padding: 0.5em; color: #fff;">
  <div class="container d-flex">
    <div style="flex: 1 1 auto; display: flex; align-items: center;">
      <b>Your Product</b>
    </div>
    <div style="display: flex; align-items: center; flex: 0 0 auto; ">
      <span>Logged in as:</span>
      <span style="padding: 0 0.5em;"><img src="user.png" height="22" /></span>
      <span>${props.user}</span>
      <a class="btn" onclick=${props.logout}
        style="margin-left: 1em; font-size: 0.8em; background: #8aa;">logout</a>
    </div>
  </div>
 </div>`;
 const Hero = props => html`
 <div class="section">
 <div style="margin-top: 1em; background: #eee; padding: 1em; border-radius: 0.5em; color: #777; ">
  <h1 style="margin: 0.2em 0;">Interactive Device Dashboard</h1>
  <p>
  This device dashboard is developed using the modern and compact Preact framework,
  in order to fit on very small devices. This is
  a <a href="https://mongoose.ws/tutorials/http-server/">hybrid server</a> which
  provides both static and dynamic content.  Static files, like CSS/JS/HTML
  or images, are compiled into the server binary.
  This UI uses the REST API implemented by the device, which you can examine
  using  <code>curl</code> command-line utility:
  </p>
  <div><code>curl -u admin:pass0 ${devaddr}/api/config/get</code> </div>
  <div><code>curl -u admin:pass0 ${devaddr}/api/config/set -d 'pub=mg/topic'</code> </div>
  <div><code>curl -u admin:pass0 ${devaddr}/api/message/send -d 'message=hello'</code> </div>
  <p>
  The device can send notifications to this dashboard at anytime. Notifications
  are sent over WebSocket at URI <code>/api/watch</code> as JSON strings: <code>{"name": "..", "data": ...}</code>
  <div>Try <code>wscat --auth user1:pass1 --connect ws://${devaddr}/api/watch</code></div>
  </p>
 </div>
 </div>`;
 const Login = function(props) {
  const [user, setUser] = useState('');
  const [pass, setPass] = useState('');
  const login = ev =>
      fetch(
          '/api/login',
          {headers: {Authorization: 'Basic ' + btoa(user + ':' + pass)}})
          .then(r => r.json())
          .then(r => r && props.login(r))
          .catch(err => err);
  return html`
 <div class="rounded border" style="max-width: 480px; margin: 0 auto; margin-top: 5em; background: #eee; ">
  <div style="padding: 2em; ">
    <h1 style="color: #666;">Device Dashboard Login </h1>
    <div style="margin: 0.5em 0;">
      <input type='text' placeholder='Name' style="width: 100%;"
        oninput=${ev => setUser(ev.target.value)} value=${user} />
    </div>
    <div style="margin: 0.5em 0;">
      <input type="password" placeholder="Password" style="width: 100%;"
        oninput=${ev => setPass(ev.target.value)} value=${pass}
        onchange=${login} />
    </div>
    <div style="margin: 1em 0;">
      <button class="btn" style="width: 100%; background: #8aa;"
        disabled=${!user || !pass} onclick=${login}> Login </button>
    </div>
    <div style="color: #777; margin-top: 2em;">
      Valid logins: admin:pass0, user1:pass1, user2:pass2
    </div>
  </div>
 </div>`;
 };
 const Configuration = function(props) {
  const [url, setUrl] = useState(props.config.url || '');
  const [pub, setPub] = useState(props.config.pub || '');
  const [sub, setSub] = useState(props.config.sub || '');
  useEffect(() => {
    setUrl(props.config.url);
    setPub(props.config.pub);
    setSub(props.config.sub);
  }, [props.config]);
  const update = (name, val) => fetch('/api/config/set', {
                                  method: 'post',
                                  body: `${name}=${encodeURIComponent(val)}`
                                }).catch(err => err);
  const updateurl = ev => update('url', url);
  const updatepub = ev => update('pub', pub);
  const updatesub = ev => update('sub', sub);
  // console.log(props, [url, pub, sub]);
  return html`
 <div class="section">
  <h3 style="background: #c03434; color: #fff; padding: 0.4em;">
    Device Configuration</h3>
  <div style="margin: 0.5em 0; display: flex;">
    <span class="addon nowrap">MQTT server:</span>
    <input type="text" style="flex: 1 100%;"
          value=${url} onchange=${updateurl}
          oninput=${ev => setUrl(ev.target.value)} />
    <button class="btn" disabled=${!url} onclick=${updateurl}
      style="margin-left: 1em; background: #8aa;">Update</button>
  </div>
  <div style="margin: 0.5em 0; display: flex; ">
    <span class="addon nowrap">Subscribe topic:</span>
    <input type="text" style="flex: 1 100%;"
        value=${sub} onchange=${updatesub}
        oninput=${ev => setSub(ev.target.value)} />
    <button class="btn" disabled=${!sub} onclick=${updatesub}
      style="margin-left: 1em; background: #8aa;">Update</button>
  </div>
  <div style="margin: 0.5em 0; display: flex;">
    <span class="addon nowrap">Publish topic:</span>
    <input type="text" style="flex: 1 100%;"
          value=${pub} onchange=${updatepub}
          oninput=${ev => setPub(ev.target.value)} />
    <button class="btn" disabled=${!pub} onclick=${updatepub}
      style="margin-left: 1em; background: #8aa;">Update</button>
  </div>
  <div>
    You can use <a href="http://www.hivemq.com/demos/websocket-client/">
    HiveMQ Websocket web client</a> to send messages to this console.
  </div>
  <div class="msg">
    The device keeps a persistent connection to the configured MQTT server.
    Changes to this configuration are propagated to all dashboards: try
    changing them in this dashboard and observe changes in other opened
    dashboards.
  </div><div class="msg">
    Note: administrators can see this section and can change device
    configuration, whilst users cannot.
  </div>
 </div>`;
 };
 const Message = m => html`<div style="margin: 0.5em 0;">
  <span class="qos">qos: ${m.message.qos} </span>
  <span class="topic">topic: ${m.message.topic} </span>
  <span class="data">data: ${m.message.data}</span>
 </div>`;
 const Messages = function(props) {
  const [messages, setMessages] = useState([]);
  const [txt, setTxt] = useState('');
  useEffect(() => {
    const id = PubSub.subscribe(function(msg) {
      if (msg.name == 'message') setMessages(x => x.concat([msg.data]));
    });
    return PubSub.unsubscribe(id);
  }, []);
  const sendmessage = ev => fetch('/api/message/send', {
                              method: 'post',
                              body: `message=${encodeURIComponent(txt)}`
                            }).then(r => setTxt(''));
  const routing = "connected" in props.config;
  const connstatus = !routing ? 'This device has no MQTT functionality' : props.config.connected ? 'connected' : 'disconnected';
  return html`
 <div class="section">
  <h3 style="background: #30c040; color: #fff; padding: 0.4em;">MQTT messages</h3>
  <div>
    MQTT server status: <b>${connstatus}</b>
  </div>
  <div style="height: 10em; overflow: auto; padding: 0.5em; " class="border">
    ${messages.map(message => h(Message, {message}))}
  </div>
  <div style="margin: 0.5em 0; display: flex">
    <span class="addon nowrap">Publish message:</span>
    <input placeholder="type and press enter..." style="flex: 1 100%;"
      value=${txt} onchange=${sendmessage} disabled=${!routing}
      oninput=${ev => setTxt(ev.target.value)} />
  </div>
  <div class="msg">
    The message gets passed to the device via REST. Then the device sends it to
    the MQTT server over MQTT. All MQTT messages on a subscribed topic
    received by the device, are propagated to this dashboard via /api/watch.
  </div>
 </div>`;
 };
 // Expected arguments:
 // data: timeseries, e.g. [ [1654361352, 19], [1654361353, 18], ... ]
 // width, height, yticks, xticks, ymin, ymax, xmin, xmax
 const SVG = function(props) {
  //            w
  //   +---------------------+
  //   |        h1           |
  //   |    +-----------+    |
  //   |    |           |    |  h
  //   | w1 |           | w2 |
  //   |    +-----------+    |
  //   |         h2          |
  //   +---------------------+
  //
  let w = props.width, h = props.height, w1 = 30, w2 = 0, h1 = 8, h2 = 18;
  let yticks = props.yticks || 4, xticks = props.xticks || 5;
  let data = props.data || [];
  let ymin = props.ymin || 0;
  let ymax = props.ymax || Math.max.apply(null, data.map(p => p[1]));
  let xmin = props.xmin || Math.min.apply(null, data.map(p => p[0]));
  let xmax = props.xmax || Math.max.apply(null, data.map(p => p[0]));
  // Y-axis tick lines and labels
  let yta = (new Array(yticks + 1)).fill(0).map((_, i) => i);  // indices
  let yti = i => h - h2 - (h - h1 - h2) * i / yticks;          // index's Y
  let ytv = i => (ymax - ymin) * i / yticks;
  let ytl = y => html`<line x1=${w1} y1=${y} x2=${w} y2=${y} class="tick"/>`;
  let ytt = (y, v) => html`<text x=0 y=${y + 5} class="label">${v}</text>`;
  // X-axis tick lines and labels
  let datefmt = unix => (new Date(unix * 1000)).toISOString().substr(14, 5);
  let xta = (new Array(xticks + 1)).fill(0).map((_, i) => i);  // indices
  let xti = i => w1 + (w - w1 - w2) * i / xticks;              // index's X
  let xtv = i => datefmt(xmin + (xmax - xmin) * i / xticks);
  let xtl = x => html`<path d="M ${x},${h1} L ${x},${h - h2}" class="tick"/>`;
  let xtt = (x, v) =>
      html`<text x=${x - 15} y=${h - 2} class="label">${v}</text>`;
  // Transform data points array into coordinate
  let dx = v => w1 + (v - xmin) / ((xmax - xmin) || 1) * (w - w1 - w2);
  let dy = v => h - h2 - (v - ymin) / ((ymax - ymin) || 1) * (h - h1 - h2);
  let dd = data.map(p => [Math.round(dx(p[0])), Math.round(dy(p[1]))]);
  let ddl = dd.length;
  // And plot the data as <path> element
  let begin0 = ddl ? `M ${dd[0][0]},${dd[0][1]}` : `M 0,0`;
  let begin = `M ${w1},${h - h2}`;  // Initial point
  let end = ddl ? `L ${dd[ddl - 1][0]},${h - h2}` : `L ${w1},${h - h2}`;
  let series = ddl ? dd.map(p => `L ${p[0]} ${p[1]}`) : [];
  return html`
 <svg viewBox="0 0 ${w} ${h}">
  <style>
    .axis { stroke: #aaa; fill: none; }
    .label { stroke: #aaa; font-size: 13px; }
    .tick { stroke: #ccc; fill: none; stroke-dasharray: 5; }
    .seriesbg { stroke: none; fill: rgba(200,225,255, 0.25)}
    .series { stroke: #25a; fill: none; }
  </style>
  ${yta.map(i => ytl(yti(i)))}
  ${yta.map(i => ytt(yti(i), ytv(i)))}
  ${xta.map(i => xtl(xti(i)))}
  ${data.length ? xta.map(i => xtt(xti(i), xtv(i))) : ''}
  <path d="${begin} ${series.join(' ')} ${end}" class="seriesbg" />
  <path d="${begin0} ${series.join(' ')}" class="series" />
 </svg>`;
 };
 const Chart = function(props) {
  const [data, setData] = useState([]);
  useEffect(() => {
    const id = PubSub.subscribe(function(msg) {
      if (msg.name != 'metrics') return;
      setData(x => x.concat([msg.data]).splice(-MaxMetricsDataPoints));
    });
    return PubSub.unsubscribe(id);
  }, []);
  let xmax = 0, missing = MaxMetricsDataPoints - data.length;
  if (missing > 0) xmax = Math.round(Date.now() / 1000) + missing;
  return html`
 <div class="section">
  <h3 style="background: #ec3; color: #fff; padding: 0.4em;">Data Chart</h3>
  <div style="overflow: auto; padding: 0.5em;" class="">
    <${SVG} height=240 width=600 ymin=0 ymax=20 xmax=${xmax} data=${data} />
  </div>
  <div class="msg">
    This chart plots live sensor data, sent by the device via /api/watch.
  </div>
 </div>`;
 };
 const App = function(props) {
  const [user, setUser] = useState('');
  const [config, setConfig] = useState({});
  const getconfig = () =>
      fetch('/api/config/get', {headers: {Authorization: ''}})
          .then(r => r.json())
          .then(r => setConfig(r))
          .catch(err => console.log(err));
  // Watch for notifications. As soon as a notification arrives, pass it on
  // to all subscribed components
  const watch = function() {
    var l = window.location, proto = l.protocol.replace('http', 'ws');
    var tid, wsURI = proto + '//' + l.host + '/api/watch'
    var reconnect = function() {
      var ws = new WebSocket(wsURI);
      // ws.onopen = () => console.log('ws connected');
      ws.onmessage = function(ev) {
        try {
          var msg = JSON.parse(ev.data);
          PubSub.publish(msg);
          // if (msg.name != 'metrics') console.log('ws->', msg);
        } catch (e) {
          console.log('Invalid ws frame:', ev.data);  // eslint-disable-line
        }
      };
      ws.onclose = function() {
        clearTimeout(tid);
        tid = setTimeout(reconnect, 1000);
        console.log('ws disconnected');
      };
    };
    reconnect();
  };
  const login = function(u) {
    document.cookie = `access_token=${u.token}; Secure, HttpOnly; SameSite=Lax; path=/; max-age=3600`;
    setUser(u.user);
    if (location.search.substring(1) == 'nows') {
      // If query string is ?nows, then do not connect to websocket. For debug.
    } else {
      watch(); // Connect to websocket, receive constant graph updates
    }
    return getconfig();
  };
  const logout = ev => {
    document.cookie = `access_token=; Secure, HttpOnly; SameSite=Lax; path=/; max-age=0`;
    setUser('');
  };
  useEffect(() => {
    // Called once at init time
    PubSub.subscribe(msg => msg.name == 'config' && getconfig());
    fetch('/api/login', {headers: {Authorization: ''}})
        .then(r => r.json())
        .then(r => login(r))
        .catch(err => setUser(''));
  }, []);
  if (!user) return html`<${Login} login=${login} />`;
  return html`
 <${Nav} user=${user} logout=${logout} />
 <div class="container">
  <div class="row">
    <div class="col col-6"><${Hero} /></div>
    <div class="col col-6"><${Chart} /></div>
    <div class="col col-6">
      ${user == 'admin' && h(Configuration, {config})}
    </div>
    <div class="col col-6"><${Messages} config=${config} /></div>
  </div>
 </div>`;
 };
 window.onload = () => render(h(App), document.body);
@@ -0,0 +1 @@
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@@ -0,0 +1,43 @@
 * { box-sizing: border-box; }
 html, body { margin: 0; padding: 0; height: 100%; font: 16px sans-serif; }
 select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
 code, pre { color: #373; font-family: monospace; font-weight: bolder; font-size: smaller; background: #ddd; padding: 0.1em 0.3em; border-radius: 0.2em; }
 textarea, input, .addon { font-size: 15px; border: 1px solid #ccc; padding: 0.5em; }
 a, a:visited, a:active { color: #55f; }
 .addon { background: #eee;  min-width: 9em;}
 .btn {
  background: #ccc; border-radius: 0.3em; border: 0; color: #fff; cursor: pointer;
  display: inline-block; padding: 0.6em 2em; font-weight: bolder;
 }
 .btn[disabled] { opacity: 0.5; cursor: auto;}
 .smooth { transition: all .2s; }
 .container { margin: 0 20px; width: auto; }
 .d-flex { display: flex; }
 .d-none { display: none; }
 .border { border: 1px solid #ddd; }
 .rounded { border-radius: 0.5em; }
 .nowrap { white-space: nowrap; }
 .msg { background: #def; border-left: 5px solid #59d; padding: 0.5em; font-size: 90%; margin: 1em 0; }
 .section { margin: 0 1em; }
 .topic, .data, .qos {  padding: 0.2em 0.5em; border-radius: 0.4em; margin-right: 0.5em;  }
 .qos { background: #efa; }
 .topic { background: #fea; }
 .data { background: #aef; }
 /* Grid */
 .row { display: flex; flex-wrap: wrap; }
 .col { margin: 0; padding: 0; overflow: auto; }
 .col-12 { width: 100%; }
 .col-11 { width: 91.66%; }
 .col-10 { width: 83.33%; }
 .col-9 { width: 75%; }
 .col-8 { width: 66.66%; }
 .col-7 { width: 58.33%; }
 .col-6 { width: 50%; }
 .col-5 { width: 41.66%; }
 .col-4 { width: 33.33%; }
 .col-3 { width: 25%; }
 .col-2 { width: 16.66%; }
 .col-1 { width: 8.33%; }
@media (min-width: 1310px) { .container { margin: auto; width: 1270px; } }
@media (max-width: 920px) { .row .col { width: 100%; } }
@@ -0,0 +1,51 @@
 PROG ?= example                   # Program we are building
 DELETE = rm -rf                   # Command to remove files
 OUT ?= -o $(PROG)                 # Compiler argument for output file
 SOURCES = main.c mongoose.c packed_fs.c      # Source code files
 CFLAGS = -W -Wall -Wextra -g -I.  # Build options
 PACK = ./pack             # Utility to pack files into a packed filesystem
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
 CFLAGS_MONGOOSE += -DMG_ENABLE_PACKED_FS=1
 FILES_TO_EMBED ?= $(wildcard web_root/*)
 ifeq ($(OS),Windows_NT)   # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD OUT=/Feprog.exe
  PROG ?= example.exe           # Use .exe suffix for the binary
  CC = gcc                      # Use MinGW gcc compiler
  CFLAGS += -lws2_32            # Link against Winsock library
  DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
  OUT ?= -o $(PROG)             # Build output
  PACK = pack.exe
 endif
 all: $(PROG)              # Default target. Build and run program
 	$(RUN) ./$(PROG) $(ARGS)
 $(PROG): $(SOURCES) $(FILES_TO_EMBED)       # Build program from sources
 	$(CC) ../../test/pack.c -o $(PACK)
 	$(PACK) $(FILES_TO_EMBED) > packed_fs.c
 	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) $(OUT)
 clean:                    # Cleanup. Delete built program and all build artifacts
 	$(DELETE) $(PROG) *.dSYM $(PACK)
 .PHONY: compress expand gzipped plain all
 # See tutorial at https://mongoose.ws/tutorials/embedded-filesystem/#build-and-try
 gzipped: compress
 	$(MAKE) all
 plain: expand
 	$(MAKE) all
 compress:
 	for file in $(FILES_TO_EMBED) ; do \
 		gzip -q $$file ; \
 	done
 expand:
 	for file in $(FILES_TO_EMBED) ; do \
 		gunzip -q $$file ; \
 	done
@@ -0,0 +1 @@
 See detailed tutorial at https://mongoose.ws/tutorials/embedded-filesystem/
@@ -0,0 +1,28 @@
 // Copyright (c) 2022 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 const char *s_listening_url = "http://0.0.0.0:8000";
 // HTTP request handler function
 void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_serve_opts opts = {
        .root_dir = "/web_root",
        .fs = &mg_fs_packed
      };
    mg_http_serve_dir(c, ev_data, &opts);
  }
  (void) fn_data;
 }
 int main(void) {
  struct mg_mgr mgr;
  mg_log_set(MG_LL_INFO);
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, s_listening_url, fn, NULL);
  while (true) mg_mgr_poll(&mgr, 500);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1 @@
 ../../mongoose.c
@@ -0,0 +1 @@
 ../../mongoose.h
@@ -0,0 +1,13 @@
 <!DOCTYPE html>
 <html lang="en">
  <head>
    <meta name="description" content="Mongoose Embedded Filesytem example" />
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
        <title>Mongoose Embedded Filesytem example</title>
    <link rel="stylesheet" href="style.css" />
  </head>
  <body></body>
  <script type="module" src="main.js"></script>
 </html>
@@ -0,0 +1,88 @@
 'use strict';
 import { h, html, render } from './preact.min.js';
 const X = function () {
  return html`
  <div class="container">
    <h2 class="section">ABOUT US</h2>
    <div class="row">
      <div class="col-7">
        <p>      
          Cesanta Software Ltd. is headquartered in Dublin, Republic of Ireland.
        </p>
        <p></p>
        Our story roots back to 2004, when Mongoose Web Server Library development started. <br>
        As Mongoose Web Server grew in popularity and matured over the following years, in 2013 Cesanta was established to continue its development and 
        provide support to our valued customers.
        </p>
        <p>We are proud to have among our customers many <i>Fortune 500</i> companies as well as medium and small size businesses.
          Security and quality of our solutions is a paramount for us and the fact that Mongoose Web Server is used by NASA aboard the International Space Station is 
          the best confirmation to it.</p>
          <p>Since 2013, Cesanta has expanded its product portfolio. We develop and distribute embedded software and hardware with focus on connected products and the Internet of Things.</p>
      </div>
    </div>
  </div>
 `;
 };
 const Y = function () {
  return html`
  <div class="container">
    <h3 class="section">Among our products are:</h3>
    <div class="row">
      <div class="col-7">
       <ul>
         <li>
           <a href="https://mongoose.ws/">Mongoose Web Server</a>
           - an embedded web server and networking library
         </li>
         <li>
           <a href="https://vcon.io/">VCON.io</a>
           - Arduino-compatible boards with built-in firmware OTA updates
           and management dashboard
         </li>
         <li>
           <a href="https://mdash.net/">mDash.net</a>
           - an all-in-one IoT Platform
         </li>
         <li>
           <a href="https://mongoose-os.com">Mongoose OS</a>
           - an operating system for low-power microcontrollers
         </li>
         <li>
           <a href="https://github.com/cesanta/mjs">mJS</a>
           - an embedded JavaScript engine for C/C++
         </li>
       </ul>
      </div>
      <div class="col-6">
        <p><b>Our solutions are:</b></p>
        <ul>
          <li>integrated into thousands of commercial products</li>
          <li>deployed to hundreds of millions devices in production environments</li>
        </ul>
      </div>
    </div>
  </div>
 `;
 };
 const App = function (props) {
  return html`
 <h1>Basic Embedded Filesystem demo</h1>
 <div>
  ${h(X)}
 </div>
 <div>
  ${h(Y)}
 </div>`;
 };
 window.onload = () => render(h(App), document.body);
@@ -0,0 +1 @@
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n,_;if(null!=(e=e.__)&&null!=e.__c){for(e.__e=e.__c.base=null,n=0;n<e.__k.length;n++)if(null!=(_=e.__k[n])&&null!=_.__e){e.__e=e.__c.base=_.__e;break}return y(e)}}function m(e){(!e.__d&&(e.__d=!0)&&t.push(e)&&!g.__r++||r!==n.debounceRendering)&&((r=n.debounceRendering)||o)(g)}function g(){for(var e;g.__r=t.length;)e=t.sort(function(e,n){return e.__v.__b-n.__v.__b}),t=[],e.some(function(e){var n,_,t,o,r,u;e.__d&&(r=(o=(n=e).__v).__e,(u=n.__P)&&(_=[],(t=s({},o)).__v=o.__v+1,P(u,o,t,n.__n,void 0!==u.ownerSVGElement,null!=o.__h?[r]:null,_,null==r?v(o):r,o.__h),D(_,o),o.__e!=r&&y(o)))})}function k(e,n,_,t,o,r,u,c,s,f){var a,d,y,m,g,k,x,H=t&&t.__k||i,E=H.length;for(_.__k=[],a=0;a<n.length;a++)if(null!=(m=_.__k[a]=null==(m=n[a])||"boolean"==typeof m?null:"string"==typeof m||"number"==typeof m||"bigint"==typeof 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@@ -0,0 +1,43 @@
 * { box-sizing: border-box; }
 html, body { margin: 0; padding: 0; height: 100%; font: 16px sans-serif; }
 select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
 code, pre { color: #373; font-family: monospace; font-weight: bolder; font-size: smaller; background: #ddd; padding: 0.1em 0.3em; border-radius: 0.2em; }
 textarea, input, .addon { font-size: 15px; border: 1px solid #ccc; padding: 0.5em; }
 a, a:visited, a:active { color: #55f; }
 .addon { background: #eee;  min-width: 9em;}
 .btn {
  background: #ccc; border-radius: 0.3em; border: 0; color: #fff; cursor: pointer;
  display: inline-block; padding: 0.6em 2em; font-weight: bolder;
 }
 .btn[disabled] { opacity: 0.5; cursor: auto;}
 .smooth { transition: all .2s; }
 .container { margin: 0 20px; width: auto; }
 .d-flex { display: flex; }
 .d-none { display: none; }
 .border { border: 1px solid #ddd; }
 .rounded { border-radius: 0.5em; }
 .nowrap { white-space: nowrap; }
 .msg { background: #def; border-left: 5px solid #59d; padding: 0.5em; font-size: 90%; margin: 1em 0; }
 .section { margin: 0 1em; }
 .topic, .data, .qos {  padding: 0.2em 0.5em; border-radius: 0.4em; margin-right: 0.5em;  }
 .qos { background: #efa; }
 .topic { background: #fea; }
 .data { background: #aef; }
 /* Grid */
 .row { display: flex; flex-wrap: wrap; }
 .col { margin: 0; padding: 0; overflow: auto; }
 .col-12 { width: 100%; }
 .col-11 { width: 91.66%; }
 .col-10 { width: 83.33%; }
 .col-9 { width: 75%; }
 .col-8 { width: 66.66%; }
 .col-7 { width: 58.33%; }
 .col-6 { width: 50%; }
 .col-5 { width: 41.66%; }
 .col-4 { width: 33.33%; }
 .col-3 { width: 25%; }
 .col-2 { width: 16.66%; }
 .col-1 { width: 8.33%; }
@media (min-width: 1310px) { .container { margin: auto; width: 1270px; } }
@media (max-width: 920px) { .row .col { width: 100%; } }
@@ -0,0 +1,6 @@
 # The following lines of boilerplate have to be in your project's
 # CMakeLists in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.5)
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(mongoose-esp32-example)
@@ -0,0 +1,38 @@
 THISDIR = $(realpath $(CURDIR))
 ROOTDIR = $(realpath $(CURDIR)/../../..)
 DOCKER ?= docker run --rm $(DA) -v $(ROOTDIR):$(ROOTDIR) -w $(THISDIR) espressif/idf
 CMD ?= idf.py build
 PORT ?= /dev/ttyUSB0
 all: example
 example:
 	true
 build: Makefile $(wildcard main/*)
 	$(DOCKER) $(CMD)
 flash:
 flash: CMD = idf.py flash
 flash: DA = --device $(PORT)
 flash: build
 .PHONY: build
 dashboard.hex: build
 	esputil mkhex \
 		0x8000 build/partition_table/partition-table.bin \
 		0x1000 build/bootloader/bootloader.bin \
 		0x100000 build/mongoose-esp32-example.bin > $@
 flash2: dashboard.hex
 	esputil -p $(PORT) -b 921600 -fp 0x220 flash dashboard.hex
 	esputil -p $(PORT) monitor
 ESPTOOL ?= esptool.py
 flash3:
 	cd build && $(ESPTOOL) --chip esp32 -p $(PORT) -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 2MB 0x8000 partition_table/partition-table.bin 0x1000 bootloader/bootloader.bin 0x100000 mongoose-esp32-example.bin
 clean:
 	test -d build && $(DOCKER) rm -rf build sdkconfig || true
@@ -0,0 +1 @@
 See detailed tutorial at https://mongoose.ws/tutorials/esp32/device-dashboard
@@ -0,0 +1,7 @@
 idf_component_register(SRCS "main.c"
                            "wifi.c"
                            "net.c"
                            "packed_fs.c"
                            "mongoose.c")
 component_compile_options(-DMG_ENABLE_LINES)
 component_compile_options(-DMG_ENABLE_PACKED_FS)
@@ -0,0 +1,35 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "esp_spiffs.h"
 //#include "freertos/FreeRTOS.h"
 #include "mongoose.h"
 const char *s_listening_url = "http://0.0.0.0:80";
 void device_dashboard_fn(struct mg_connection *, int, void *, void *);
 #define WIFI_SSID "YOUR_WIFI_NETWORK_NAME"  // SET THIS!
 #define WIFI_PASS "YOUR_WIFI_PASSWORD"      // SET THIS!
 #define FS_ROOT "/spiffs"
 void app_main(void) {
  // Mount filesystem
  esp_vfs_spiffs_conf_t conf = {
      .base_path = FS_ROOT, .max_files = 20, .format_if_mount_failed = true};
  int res = esp_vfs_spiffs_register(&conf);
  MG_INFO(("FS %s, %d", conf.base_path, res));
  mg_file_printf(&mg_fs_posix, FS_ROOT "/hello.txt", "%s", "hello from ESP");
  // Setup wifi. This function is implemented in wifi.c
  // It blocks until connected to the configured WiFi network
  void wifi_init(const char *ssid, const char *pass);
  wifi_init(WIFI_SSID, WIFI_PASS);
  // Connected to WiFi, now start HTTP server
  struct mg_mgr mgr;
  mg_log_set(MG_LL_DEBUG);  // Set log level
  mg_mgr_init(&mgr);
  MG_INFO(("Mongoose v%s on %s", MG_VERSION, s_listening_url));
  mg_http_listen(&mgr, s_listening_url, device_dashboard_fn, NULL);
  for (;;) mg_mgr_poll(&mgr, 1000);  // Infinite event loop
 }
@@ -0,0 +1 @@
 ../../../../mongoose.c
@@ -0,0 +1 @@
 ../../../../mongoose.h
@@ -0,0 +1 @@
 ../../../device-dashboard/net.c
@@ -0,0 +1 @@
 ../../../device-dashboard/packed_fs.c
@@ -0,0 +1,104 @@
 // Code taken from the ESP32 IDF WiFi station Example
 #include <string.h>
 #include "esp_event.h"
 #include "esp_log.h"
 #include "esp_system.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/event_groups.h"
 #include "freertos/task.h"
 #include "nvs_flash.h"
 #include "lwip/err.h"
 #include "lwip/sys.h"
 #include "mongoose.h"
 static EventGroupHandle_t s_wifi_event_group;
 /* The event group allows multiple bits for each event, but we only care about
 * two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
 #define WIFI_CONNECTED_BIT BIT0
 #define WIFI_FAIL_BIT BIT1
 static int s_retry_num = 0;
 static void event_handler(void *arg, esp_event_base_t event_base,
                          int32_t event_id, void *event_data) {
  if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
    esp_wifi_connect();
  } else if (event_base == WIFI_EVENT &&
             event_id == WIFI_EVENT_STA_DISCONNECTED) {
    if (s_retry_num < 3) {
      esp_wifi_connect();
      s_retry_num++;
      MG_INFO(("retry to connect to the AP"));
    } else {
      xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
    }
    MG_ERROR(("connect to the AP fail"));
  } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
    ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
    MG_INFO(("IP ADDRESS:" IPSTR, IP2STR(&event->ip_info.ip)));
    s_retry_num = 0;
    xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
  }
 }
 void wifi_init(const char *ssid, const char *pass) {
  esp_err_t ret = nvs_flash_init();
  if (ret == ESP_ERR_NVS_NO_FREE_PAGES ||
      ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
    ESP_ERROR_CHECK(nvs_flash_erase());
    ret = nvs_flash_init();
  }
  ESP_ERROR_CHECK(ret);
  s_wifi_event_group = xEventGroupCreate();
  ESP_ERROR_CHECK(esp_netif_init());
  ESP_ERROR_CHECK(esp_event_loop_create_default());
  esp_netif_create_default_wifi_sta();
  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
  esp_event_handler_instance_t instance_any_id;
  esp_event_handler_instance_t instance_got_ip;
  ESP_ERROR_CHECK(esp_event_handler_instance_register(
      WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
  ESP_ERROR_CHECK(esp_event_handler_instance_register(
      IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
  wifi_config_t c = {.sta = {.threshold = {.authmode = WIFI_AUTH_WPA2_PSK},
                             .pmf_cfg = {.capable = true, .required = false}}};
  snprintf((char *) c.sta.ssid, sizeof(c.sta.ssid), "%s", ssid);
  snprintf((char *) c.sta.password, sizeof(c.sta.password), "%s", pass);
  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
  ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &c));
  ESP_ERROR_CHECK(esp_wifi_start());
  MG_DEBUG(("wifi_init_sta finished."));
  EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
                                         WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
                                         pdFALSE, pdFALSE, portMAX_DELAY);
  if (bits & WIFI_CONNECTED_BIT) {
    MG_INFO(("connected to ap SSID:%s password:%s", ssid, pass));
  } else if (bits & WIFI_FAIL_BIT) {
    MG_ERROR(("Failed to connect to SSID:%s, password:%s", ssid, pass));
  } else {
    MG_ERROR(("UNEXPECTED EVENT"));
  }
  /* The event will not be processed after unregister */
  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
      IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
      WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
  vEventGroupDelete(s_wifi_event_group);
 }
@@ -0,0 +1,5 @@
 # Name,   Type, SubType, Offset,  Size, Flags
 nvs,      data, nvs,     0x9000,  0x6000,
 phy_init, data, phy,     0xf000,  0x1000,
 storage,  data, spiffs,  0x10000, 0x10000,
 factory,  app,  factory, 0x100000, 1M,
@@ -0,0 +1,4 @@
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
 #CONFIG_ESP_MAIN_TASK_STACK_SIZE=8192
@@ -0,0 +1,6 @@
 # The following lines of boilerplate have to be in your project's
 # CMakeLists in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.5)
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(mongoose-esp32-example)
@@ -0,0 +1,32 @@
 CWD = $(realpath $(CURDIR))
 MNT = $(realpath $(CURDIR)/../../..)
 PORT ?= /dev/ttyUSB0
 CMD ?= build
 all: example
 example:
 	true
 build: Makefile $(wildcard main/*)
 	docker run --rm $(DA) -v $(MNT):$(MNT) -w $(CWD) espressif/idf idf.py $(CMD)
 flash:
 flash: CMD = flash
 flash: DA = --device $(PORT)
 flash: build
 .PHONY: build
 bridge.hex: build
 	esputil mkhex \
 		0x8000 build/partition_table/partition-table.bin \
 		0x1000 build/bootloader/bootloader.bin \
 		0x100000 build/mongoose-esp32-example.bin > $@
 flash2: bridge.hex
 	esputil -p $(PORT) -b 921600 -fp 0x220 flash bridge.hex
 	esputil -p $(PORT) monitor
 clean:
 	rm -rf build
@@ -0,0 +1,41 @@
 # A UART to network bridge for ESP32
 ![](../../uart-bridge/screenshots/dashboard.png)
 - See detailed tutorial at https://mongoose.ws/tutorials/esp32/uart-bridge/
 ## Flash pre-built firmware
 You can flash a pre-built firmware to the ESP32 device using the following
 instructions:
 1. Connect your ESP32 device to the workstation. It should be accessible
   via a serial port
 2. Download and unzip ESP32 flashing tool from https://mongoose.ws/downloads/esputil.zip
 3. Download a prebuilt firmware https://mongoose.ws/downloads/uart-bridge.hex into the unzipped directory
 4. Start command prompt (or terminal on Mac/Linux). Run `cd
  PATH/TO/esputil`  to go into the unzipped `esputil/` directory. After that, run
  the following command (change `COMPORT` to the board's serial port):
  | OS      | Command |
  | ------- | ------- |
  | Windows | <pre><code class="language-bash">.\windows\esputil -p COMPORT flash uart-bridge.hex</code></pre>|
  | Linux   | <pre><code class="language-bash">./linux/esputil -p COMPORT flash uart-bridge.hex</pre> |
  | MacOS   | <pre><code class="language-bash">./macos/esputil -p COMPORT flash uart-bridge.hex</code></pre> |
 Next step is to monitor and follow the instructions.
 ```sh
 esputil -p COMPORT monitor
 ```
 Note: if monitor command shows constant restarts, the flash parameters
 settings can be wrong. Reflash your device with `-fp ...` flash parameters
 settings. For example, WROOM-32 based boards use `-fp 0x220`:
 ```sh
 esputil -p COMPORT -fp 0x220 flash uart-bridge.hex
 ```
 For more on possible options for flash parameters, see
 https://github.com/cpq/esputil#flash-parameters
@@ -0,0 +1,10 @@
 idf_component_register(SRCS "main.c"
                            "wifi.c"
                            "uart.c"
                            "cli.c"
                            "net.c"
                            "packed_fs.c"
                            "mongoose.c")
 component_compile_options(-DMG_ENABLE_LINES=1)
 component_compile_options(-DMG_ENABLE_PACKED_FS=1)
 component_compile_options(-DUART_API_IMPLEMENTED=1)
@@ -0,0 +1,94 @@
 #include "main.h"
 static void cli_wifi(const char *ssid, const char *pass) {
  if (wifi_init(ssid, pass)) {
    mg_file_printf(&mg_fs_posix, WIFI_FILE, "{%m:%m,%m:%m}\n", mg_print_esc, 0,
                   "ssid", mg_print_esc, 0, ssid, mg_print_esc, 0, "pass",
                   mg_print_esc, 0, pass);
    MG_INFO(("Reboot now"));
  }
 }
 static void cli_ls(void) {
  DIR *dirp = opendir(FS_ROOT);
  struct dirent *dp;
  if (dirp == NULL) {
    MG_ERROR(("Cannot open FS: %d", errno));
  } else {
    while ((dp = readdir(dirp)) != NULL) {
      /* Do not show current and parent dirs */
      if (strcmp((const char *) dp->d_name, ".") == 0 ||
          strcmp((const char *) dp->d_name, "..") == 0) {
        continue;
      } else {
        printf("%s\n", dp->d_name);
      }
    }
    closedir(dirp);
  }
 }
 static void cli_cat(const char *fname) {
  char path[MG_PATH_MAX];
  snprintf(path, sizeof(path), "%s/%s", FS_ROOT, fname);
  FILE *fp = fopen(path, "r");
  if (fp != NULL) {
    int ch;
    while ((ch = fgetc(fp)) != EOF) putchar(ch);
    fclose(fp);
  }
 }
 static void cli_rm(const char *fname) {
  char path[100];
  snprintf(path, sizeof(path), "%s/%s", FS_ROOT, fname);
  remove(path);
 }
 static struct mg_iobuf in;
 void cli(uint8_t input_byte) {
  if (input_byte == 0 || input_byte == 0xff) return;
  if (in.len >= 128) in.len = 0;
  mg_iobuf_add(&in, in.len, &input_byte, sizeof(input_byte));
  if (input_byte == '\n') {
    const char *arrow = "---";
    char buf0[10], buf1[50], buf2[250];
    in.buf[in.len] = '\0';
    buf0[0] = buf1[0] = buf2[0] = '\0';
    sscanf((char *) in.buf, "%9s %49s %249[^\r\n]", buf0, buf1, buf2);
    printf("%s CLI command: '%s'\n", arrow, buf0);
    if (strcmp(buf0, "reboot") == 0) {
      esp_restart();
    } else if (strcmp(buf0, "ls") == 0) {
      cli_ls();
    } else if (strcmp(buf0, "cat") == 0) {
      cli_cat(buf1);
    } else if (strcmp(buf0, "rm") == 0) {
      cli_rm(buf1);
    } else if (strcmp(buf0, "reboot") == 0) {
      esp_restart();
    } else if (strcmp(buf0, "ll") == 0) {
      mg_log_set(atoi(buf1));
    } else if (strcmp(buf0, "wifi") == 0) {
      cli_wifi(buf1, buf2);
    } else {
      printf("%s %s\n", arrow, "Unknown command. Usage:");
      printf("%s %s\n", arrow, "  set NAME VALUE");
      printf("%s %s\n", arrow, "  rm FILENAME");
      printf("%s %s\n", arrow, "  cat FILENAME");
      printf("%s %s\n", arrow, "  ls");
      printf("%s %s\n", arrow, "  reboot");
      printf("%s %s\n", arrow, "  wifi WIFI_NET WIFI_PASS");
    }
    printf("%s %s\n", arrow, "CLI output end");
    in.len = 0;
  }
 }
 void cli_init(void) {
  mg_iobuf_init(&in, 0, 32);
 }
@@ -0,0 +1,50 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "main.h"
 const char *s_listening_url = "http://0.0.0.0:80";
 char *config_read(void) {
  return mg_file_read(&mg_fs_posix, FS_ROOT "/config.json", NULL);
 }
 void config_write(struct mg_str config) {
  mg_file_write(&mg_fs_posix, FS_ROOT "/config.json", config.ptr, config.len);
 }
 void app_main(void) {
  // Mount filesystem
  esp_vfs_spiffs_conf_t conf = {
      .base_path = FS_ROOT, .max_files = 20, .format_if_mount_failed = true};
  int res = esp_vfs_spiffs_register(&conf);
  MG_INFO(("FS at %s initialised, status: %d", conf.base_path, res));
  // Try to connect to wifi by using saved WiFi credentials
  char *json = mg_file_read(&mg_fs_posix, WIFI_FILE, NULL);
  if (json != NULL) {
    char *ssid = mg_json_get_str(mg_str(json), "$.ssid");
    char *pass = mg_json_get_str(mg_str(json), "$.pass");
    while (!wifi_init(ssid, pass)) (void) 0;
    free(ssid);
    free(pass);
    free(json);
  } else {
    // If WiFi is not configured, run CLI until configured
    MG_INFO(("WiFi is not configured, running CLI. Press enter"));
    cli_init();
    for (;;) {
      uint8_t ch = getchar();
      cli(ch);
      usleep(10000);
    }
  }
  // Connected to WiFi, now start HTTP server
  struct mg_mgr mgr;
  mg_mgr_init(&mgr);
  mg_log_set(MG_LL_DEBUG);  // Set log level
  MG_INFO(("Mongoose v%s on %s", MG_VERSION, s_listening_url));
  mg_http_listen(&mgr, s_listening_url, uart_bridge_fn, &mgr);
  for (;;) mg_mgr_poll(&mgr, 10);  // Infinite event loop
 }
@@ -0,0 +1,18 @@
 #pragma once
 #include "mongoose.h"
 #include "driver/gpio.h"
 #include "driver/uart.h"
 #include "esp_spiffs.h"
 #include "freertos/FreeRTOS.h"
 #define FS_ROOT "/spiffs"
 #define WIFI_FILE FS_ROOT "/wifi.json"
 #define UART_NO 1
 void uart_bridge_fn(struct mg_connection *, int, void *, void *);
 int uart_read(void *buf, size_t len);
 bool wifi_init(const char *ssid, const char *pass);
 void cli(uint8_t ch);
 void cli_init(void);
@@ -0,0 +1 @@
 ../../../../mongoose.c
@@ -0,0 +1 @@
 ../../../../mongoose.h
@@ -0,0 +1 @@
 ../../../uart-bridge/net.c
@@ -0,0 +1 @@
 ../../../uart-bridge/packed_fs.c
		`@@ -0,0 +1 @@`
							`See detailed tutorial at https://mongoose.ws/tutorials/captive-dns-server/`
		`@@ -1 +0,0 @@`
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