Simplified general structure, removed event_supplier support, comet logic now uses a lock-free implementation

Sebastiano Merlino · Sebastiano Merlino · commit fb87493b54d9 · 2015-12-29T19:09:42.000+01:00
diff --git a/examples/comet.cpp b/examples/comet.cpp
@@ -0,0 +1,66 @@
+/*
+     This file is part of libhttpserver
+     Copyright (C) 2011, 2012, 2013, 2014, 2015 Sebastiano Merlino
+
+     This library is free software; you can redistribute it and/or
+     modify it under the terms of the GNU Lesser General Public
+     License as published by the Free Software Foundation; either
+     version 2.1 of the License, or (at your option) any later version.
+
+     This library is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     Lesser General Public License for more details.
+
+     You should have received a copy of the GNU Lesser General Public
+     License along with this library; if not, write to the Free Software
+     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
+     USA
+*/
+
+#include <httpserver.hpp>
+#include <iostream>
+#include <vector>
+
+using namespace httpserver;
+
+std::string topics_array[] = { "topic_1" };
+std::vector<std::string> topics(topics_array, topics_array + sizeof(topics_array) / sizeof(std::string));
+
+class comet_send_resource : public http_resource {
+	public:
+        void render(const http_request& req, http_response** res)
+        {
+            *res = new http_response(http_response_builder("Hi", 200).long_polling_send_response(topics_array[0]));
+        }
+};
+
+class comet_listen_resource : public http_resource {
+	public:
+        void render(const http_request& req, http_response** res)
+        {
+            *res = new http_response(http_response_builder("OK", 200).long_polling_receive_response(topics));
+        }
+};
+
+int main()
+{
+    //it is possible to create a webserver passing a great number of parameters.
+    //In this case we are just passing the port and the number of thread running.
+    webserver ws = create_webserver(8080).start_method(http::http_utils::INTERNAL_SELECT);
+
+    comet_send_resource csr;
+    comet_listen_resource clr;
+    //this way we are registering the hello_world_resource to answer for the endpoint
+    //"/hello". The requested method is called (if the request is a GET we call the render_GET
+    //method. In case that the specific render method is not implemented, the generic "render"
+    //method is called.
+    ws.register_resource("/send", &csr, true);
+    ws.register_resource("/listen", &clr, true);
+
+    //This way we are putting the created webserver in listen. We pass true in order to have
+    //a blocking call; if we want the call to be non-blocking we can just pass false to the
+    //method.
+    ws.start(true);
+    return 0;
+}
