start moving to new skeleton

tutorials/core/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#core

tutorials/core/timers/Makefile

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

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+See detailed tutorial at https://mongoose.ws/tutorials/core/timers/

tutorials/core/timers/main.c

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+// Copyright (c) 2020 Cesanta Software Limited
+// All rights reserved
+//
+// Example Websocket server with timers. This is a simple Websocket echo
+// server, which sends a message to all connected clients periodically,
+// using timer API.
+
+#include "mongoose.h"
+
+static const char *s_listen_on = "http://localhost:8000";
+static const char *s_web_root = "web_root";
+
+// This RESTful server implements the following endpoints:
+static void fn(struct mg_connection *c, int ev, void *ev_data) {
+  if (ev == MG_EV_HTTP_MSG) {
+    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
+    if (mg_match(hm->uri, mg_str("/websocket"), NULL)) {
+      mg_ws_upgrade(c, hm, NULL);  // Upgrade HTTP to Websocket
+      c->data[0] = 'W';           // Set some unique mark on a connection
+    } else {
+      // Serve static files
+      struct mg_http_serve_opts opts = {.root_dir = s_web_root};
+      mg_http_serve_dir(c, ev_data, &opts);
+    }
+  } else if (ev == MG_EV_WS_MSG) {
+    // Got websocket frame. Received data is wm->data. Echo it back!
+    struct mg_ws_message *wm = (struct mg_ws_message *) ev_data;
+    mg_ws_send(c, wm->data.buf, wm->data.len, WEBSOCKET_OP_TEXT);
+    mg_iobuf_del(&c->recv, 0, c->recv.len);
+  }
+}
+
+static void timer_fn(void *arg) {
+  struct mg_mgr *mgr = (struct mg_mgr *) arg;
+  // Broadcast "hi" message to all connected websocket clients.
+  // Traverse over all connections
+  for (struct mg_connection *c = mgr->conns; c != NULL; c = c->next) {
+    // Send only to marked connections
+    if (c->data[0] == 'W') mg_ws_send(c, "hi", 2, WEBSOCKET_OP_TEXT);
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;        // Event manager
+  mg_mgr_init(&mgr);        // Initialise event manager
+  mg_log_set(MG_LL_DEBUG);  // Set log level
+  mg_timer_add(&mgr, 1000, MG_TIMER_REPEAT, timer_fn, &mgr);
+  mg_http_listen(&mgr, s_listen_on, fn, NULL);  // Create HTTP listener
+  for (;;) mg_mgr_poll(&mgr, 500);              // Infinite event loop
+  mg_mgr_free(&mgr);                            // Free manager resources
+  return 0;
+}

tutorials/core/timers/mongoose.c

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+../../../mongoose.c

tutorials/core/timers/mongoose.h

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+../../../mongoose.h

tutorials/core/timers/web_root/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <body>
+    <h1>Websocket test client</h1>
+    <input id="url" type="text" placeholder="Type URL" value="ws://localhost:8000/websocket" style="width:20em;" /> 
+    <button id="connect">connect</button>
+    <div style="height: 0.3em;">&nbsp;</div>
+    <input id="message" type="text" placeholder="Type message" style="width: 20em;" /> 
+    <button id="send">send message</button>
+    <div style="margin-top: 1em;">Event log:</div>
+    <div id="log" style="background: #eee; height: 10em; padding: 0.5em;"><div>
+  </body>
+  <script>
+    var ws, E = function(id) { return document.getElementById(id); };
+    var url = E('url'), connect = E('connect'), message = E('message'), send = E('send'), log = E('log');
+    var enable = function(en) { message.disabled = send.disabled = !en; url.disabled = en; connect.innerHTML = en ? 'disconnect' : 'connect'; };
+    enable(false)
+    connect.onclick = function() {
+      if (ws) { ws.close(); return; }
+      ws = new WebSocket(url.value);
+      if (!ws) return;
+      ws.onopen = function() { log.innerHTML += 'CONNECTION OPENED<br/>'; }
+      ws.onmessage = function(ev) { log.innerHTML += 'RECEIVED: ' + ev.data + '<br/>'; }
+      ws.onerror = function(ev) { log.innerHTML += 'ERROR: ' + ev + '<br/>'; }
+      ws.onclose = function() { log.innerHTML += 'CONNECTION CLOSED<br/>'; enable(false); ws = null; }
+      enable(true);
+    };
+    send.onclick = function() {
+      if (!ws) return;
+      log.innerHTML += 'SENT: ' + message.value + '<br/>';
+      ws.send(message.value);
+    }
+  </script>
+</html>

tutorials/http/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#http

tutorials/mqtt/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#mqtt

tutorials/smtp/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#smtp

tutorials/tcp/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#tcp

tutorials/tcpip_stack/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#tcpip-stack

tutorials/tls/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#ssltls

tutorials/udp/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#udp

tutorials/websocket/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#websocket

tutorials/webui/README.md

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+See detailed tutorials at https://mongoose.ws/documentation/#web-ui