Revert "Stop publish examples to mongoose repo"

This reverts commit 1a17e17c462bdd4e1d26d8742f8b7087273e04c2.

PUBLISHED_FROM=80028de308c9a021955d1425d2bfee8feb85f193

examples/websocket_chat/Makefile

@@ -0,0 +1,3 @@
+PROG = websocket_chat
+MODULE_CFLAGS = -DMG_ENABLE_FILESYSTEM=0
+include ../examples.mk

examples/websocket_chat/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>WebSocket Test</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <style type="text/css">
+    body {
+      background-color: #789; margin: 0;
+      padding: 0; font: 14px Helvetica, Arial, sans-serif;
+    }
+    div.content {
+      width: 800px; margin: 2em auto; padding: 20px 50px;
+      background-color: #fff; border-radius: 1em;
+    }
+    #messages {
+      border: 2px solid #fec; border-radius: 1em;
+      height: 10em; overflow: scroll; padding: 0.5em 1em;
+    }
+    a:link, a:visited { color: #69c; text-decoration: none; }
+    @media (max-width: 700px) {
+      body { background-color: #fff; }
+      div.content {
+        width: auto; margin: 0 auto; border-radius: 0;
+        padding: 1em;
+      }
+    }
+</style>
+
+<script language="javascript" type="text/javascript">
+
+  var rooms = [];
+  var ws = new WebSocket('ws://' + location.host + '/ws');
+
+  if (!window.console) { window.console = { log: function() {} } };
+
+  ws.onopen = function(ev)  { console.log(ev); };
+  ws.onerror = function(ev) { console.log(ev); };
+  ws.onclose = function(ev) { console.log(ev); };
+  ws.onmessage = function(ev) {
+    console.log(ev);
+    var div = document.createElement('div');
+    div.innerHTML = ev.data;
+    document.getElementById('messages').appendChild(div);
+
+  };
+
+  window.onload = function() {
+    document.getElementById('send_button').onclick = function(ev) {
+      var msg = document.getElementById('send_input').value;
+      document.getElementById('send_input').value = '';
+      ws.send(msg);
+    };
+    document.getElementById('send_input').onkeypress = function(ev) {
+      if (ev.keyCode == 13 || ev.which == 13) {
+        document.getElementById('send_button').click();
+      }
+    };
+  };
+</script>
+</head>
+<body>
+  <div class="content">
+    <h1>Websocket PubSub Demonstration</h1>
+
+    <p>
+      This page demonstrates how Mongoose could be used to implement
+      <a href="http://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern">
+       publish–subscribe pattern</a>. Open this page in several browser
+       windows. Each window initiates persistent
+       <a href="http://en.wikipedia.org/wiki/WebSocket">WebSocket</a>
+      connection with the server, making each browser window a websocket client.
+      Send messages, and see messages sent by other clients.
+    </p>
+
+    <div id="messages">
+    </div>
+
+    <p>
+      <input type="text" id="send_input" />
+      <button id="send_button">Send Message</button>
+    </p>
+  </div>
+</body>
+</html>

examples/websocket_chat/websocket_chat.c

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+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "mongoose.h"
+
+static sig_atomic_t s_signal_received = 0;
+static const char *s_http_port = "8000";
+
+static void signal_handler(int sig_num) {
+  signal(sig_num, signal_handler);  // Reinstantiate signal handler
+  s_signal_received = sig_num;
+}
+
+static int is_websocket(const struct mg_connection *nc) {
+  return nc->flags & MG_F_IS_WEBSOCKET;
+}
+
+static void broadcast(struct mg_connection *nc, const struct mg_str msg) {
+  struct mg_connection *c;
+  char buf[500];
+  char addr[32];
+  mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
+                      MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
+
+  snprintf(buf, sizeof(buf), "%s %.*s", addr, (int) msg.len, msg.p);
+  printf("%s\n", buf); /* Local echo. */
+  for (c = mg_next(nc->mgr, NULL); c != NULL; c = mg_next(nc->mgr, c)) {
+    if (c == nc) continue; /* Don't send to the sender. */
+    mg_send_websocket_frame(c, WEBSOCKET_OP_TEXT, buf, strlen(buf));
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  switch (ev) {
+    case MG_EV_WEBSOCKET_HANDSHAKE_DONE: {
+      /* New websocket connection. Tell everybody. */
+      broadcast(nc, mg_mk_str("++ joined"));
+      break;
+    }
+    case MG_EV_WEBSOCKET_FRAME: {
+      struct websocket_message *wm = (struct websocket_message *) ev_data;
+      /* New websocket message. Tell everybody. */
+      struct mg_str d = {(char *) wm->data, wm->size};
+      broadcast(nc, d);
+      break;
+    }
+    case MG_EV_CLOSE: {
+      /* Disconnect. Tell everybody. */
+      if (is_websocket(nc)) {
+        broadcast(nc, mg_mk_str("-- left"));
+      }
+      break;
+    }
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  signal(SIGTERM, signal_handler);
+  signal(SIGINT, signal_handler);
+  setvbuf(stdout, NULL, _IOLBF, 0);
+  setvbuf(stderr, NULL, _IOLBF, 0);
+
+  mg_mgr_init(&mgr, NULL);
+
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  printf("Started on port %s\n", s_http_port);
+  while (s_signal_received == 0) {
+    mg_mgr_poll(&mgr, 200);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}