Added MDNS and driver support for multicast

tutorials/stm32/nucleo-f746zg-make-baremetal-builtin-cmsis_driver/main.c

@@ -60,6 +60,7 @@ int main(void) {
 
   MG_INFO(("Initialising application..."));
   web_init(&mgr);
+  mg_mdns_listen(&mgr, "Mongoose");  // Start mDNS server
 
   MG_INFO(("Starting event loop"));
   for (;;) {

tutorials/stm32/nucleo-f746zg-make-baremetal-builtin-cmsis_driver/mongoose_config.h

@@ -9,3 +9,5 @@
 #define MG_ENABLE_PACKED_FS 1 
 #define MG_ENABLE_DRIVER_CMSIS 1
 #define MG_ENABLE_LINES 1
+#define MG_ENABLE_MDNS 1
+

tutorials/udp/mdns-server/Makefile

@@ -0,0 +1,25 @@
+PROG ?= example                   # Program we are building
+DELETE = rm -rf                   # Command to remove files
+OUT ?= -o $(PROG)                 # Compiler argument for output file
+SOURCES = main.c mongoose.c       # Source code files
+CFLAGS = -W -Wall -Wextra -g -I.  # Build options
+
+# Mongoose build options. See https://mongoose.ws/documentation/#build-options
+CFLAGS_MONGOOSE += -DMG_ENABLE_MDNS=1 -DMG_ENABLE_LINES
+
+ifeq ($(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

tutorials/udp/mdns-server/main.c

@@ -0,0 +1,24 @@
+// Copyright (c) 2022 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+int main(void) {
+  uint32_t response_ip = inet_addr("192.168.69.11");
+  struct mg_mgr mgr;
+  static struct mg_connection *c;
+  mg_log_set(MG_LL_DEBUG);  // Set log level
+  mg_mgr_init(&mgr);        // Initialise event manager
+
+  // Desired name must NOT have any dots in it, nor a domain
+  c = mg_mdns_listen(&mgr, "Mongoose");  // Start mDNS server
+  // if not using our built-in TCP/IP stack, pass the IP address you want to
+  // use as a response, this depends on your underlying TCP/IP stack and number
+  // of interfaces available
+  memcpy(c->data, &response_ip, sizeof(response_ip));
+
+  for (;;) mg_mgr_poll(&mgr, 1000);  // Event loop
+
+  mg_mgr_free(&mgr);
+  return 0;
+}

tutorials/udp/mdns-server/mongoose.c

@@ -0,0 +1 @@
+../../../mongoose.c

tutorials/udp/mdns-server/mongoose.h

@@ -0,0 +1 @@
+../../../mongoose.h