moved multi_threaded to separate dir

examples/multi_threaded_server/Makefile

@@ -0,0 +1,12 @@
+# Copyright (c) 2014 Cesanta Software
+# All rights reserved
+
+PROG = multi_threaded_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/multi_threaded_server/multi_threaded_server.c

@@ -0,0 +1,40 @@
+#include "mongoose.h"
+
+// Start a browser and hit refresh couple of times. The replies will
+// come from both server instances.
+static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
+  if (ev == MG_REQUEST) {
+    mg_send_header(conn, "Content-Type", "text/plain");
+    mg_printf_data(conn, "This is a reply from server instance # %s",
+                   (char *) conn->server_param);
+    return MG_TRUE;
+  } else if (ev == MG_AUTH) {
+    return MG_TRUE;
+  } else {
+    return MG_FALSE;
+  }
+}
+
+static void *serve(void *server) {
+  for (;;) mg_poll_server((struct mg_server *) server, 1000);
+  return NULL;
+}
+
+int main(void) {
+  struct mg_server *server1, *server2;
+
+  server1 = mg_create_server((void *) "1", ev_handler);
+  server2 = mg_create_server((void *) "2", ev_handler);
+
+  // Make both server1 and server2 listen on the same socket
+  mg_set_option(server1, "listening_port", "8080");
+  mg_set_listening_socket(server2, mg_get_listening_socket(server1));
+
+  // server1 goes to separate thread, server 2 runs in main thread.
+  // IMPORTANT: NEVER LET DIFFERENT THREADS HANDLE THE SAME SERVER.
+  mg_start_thread(serve, server1);
+  mg_start_thread(serve, server2);
+  getchar();
+
+  return 0;
+}