Moved websocket echo server example

examples/websocket_echo_server/Makefile

+# Copyright (c) 2014 Cesanta Software
+# All rights reserved
+
+PROG = websocket_echo_server
+CFLAGS = -W -Wall -I../.. -g -O0 $(CFLAGS_EXTRA)
+SOURCES = $(PROG).c ../../mongoose.c
+
+$(PROG): $(SOURCES)
+	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
+
+clean:
+	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib

examples/websocket.c → examples/websocket_echo_server/websocket_echo_server.c

+// Copyright (c) 2013-2014 Cesanta Software Limited
+// $Date: 2014-09-09 08:27:35 UTC $
+
 #include <string.h>
 #include <time.h>
 #include "mongoose.h"
 
-#ifdef _WIN32
-#define snprintf _snprintf
-#endif
-
-extern const char *find_embedded_file(const char *, size_t *);
+static void push_message(struct mg_server *server, time_t current_time) {
+  struct mg_connection *c;
+  char buf[20];
+  int len = sprintf(buf, "%lu", (unsigned long) current_time);
 
-static int iterate_callback(struct mg_connection *c, enum mg_event ev) {
-  if (ev == MG_POLL && c->is_websocket) {
-    char buf[20];
-    int len = snprintf(buf, sizeof(buf), "%lu",
-     (unsigned long) * (time_t *) c->callback_param);
-    mg_websocket_write(c, 1, buf, len);
+  // Iterate over all connections, and push current time message to websocket ones.
+  for (c = mg_next(server, NULL); c != NULL; c = mg_next(server, c)) {
+    if (c->is_websocket) {
+      mg_websocket_write(c, 1, buf, len);
+    }
   }
-  return MG_TRUE;
 }
 
 static int send_reply(struct mg_connection *conn) {
-  size_t index_size;
-  const char *index_html = find_embedded_file("websocket.html", &index_size);
-
   if (conn->is_websocket) {
     // This handler is called for each incoming websocket frame, one or more
     // times for connection lifetime.
@@ -30,19 +27,16 @@ static int send_reply(struct mg_connection *conn) {
     return conn->content_len == 4 && !memcmp(conn->content, "exit", 4) ?
       MG_FALSE : MG_TRUE;
   } else {
-    mg_send_header(conn, "Content-Type", "text/html");
-    mg_send_data(conn, index_html, index_size);
-    return MG_TRUE;
+    mg_send_file(conn, "index.html");
+    return MG_MORE;
   }
 }
 
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
-  if (ev == MG_REQUEST) {
-    return send_reply(conn);
-  } else if (ev == MG_AUTH) {
-    return MG_TRUE;
-  } else {
-    return MG_FALSE;
+  switch (ev) {
+    case MG_AUTH: return MG_TRUE;
+    case MG_REQUEST: return send_reply(conn);
+    default: return MG_FALSE;
   }
 }
 
@@ -58,7 +52,7 @@ int main(void) {
     current_timer = time(NULL);
     if (current_timer - last_timer > 0) {
       last_timer = current_timer;
-      mg_iterate_over_connections(server, iterate_callback, &current_timer);
+      push_message(server, current_timer);
     }
   }