adds utility client example

examples/utility_client/utility_client.cpp

@@ -0,0 +1,63 @@
+#include <websocketpp/config/asio_no_tls_client.hpp>
+
+#include <websocketpp/client.hpp>
+
+#include <iostream>
+
+typedef websocketpp::client<websocketpp::config::asio_client> client;
+
+using websocketpp::lib::placeholders::_1;
+using websocketpp::lib::placeholders::_2;
+using websocketpp::lib::bind;
+
+// pull out the type of messages sent by our config
+typedef websocketpp::config::asio_client::message_type::ptr message_ptr;
+
+
+void print_handler(client* c, websocketpp::connection_hdl hdl, message_ptr msg) {
+    c->get_alog().write(websocketpp::log::alevel::app,msg->get_payload());
+}
+
+void write_on_open(client* c, websocketpp::connection_hdl hdl) {
+    c->send(hdl, "ping", websocketpp::frame::opcode::text);
+}
+
+int main(int argc, char* argv[]) {
+	// Create a server endpoint
+    client endpoint;
+	
+	std::string uri = "ws://localhost:9001";
+	
+	if (argc == 2) {
+	    uri = argv[1];
+	}
+	
+	try {
+        // We expect there to be a lot of errors, so suppress them
+        endpoint.set_access_channels(websocketpp::log::alevel::all);
+        endpoint.set_error_channels(websocketpp::log::elevel::all);
+        
+        // Initialize ASIO
+        endpoint.init_asio();
+        
+        // Register our handlers
+        endpoint.set_message_handler(bind(&print_handler,&endpoint,::_1,::_2));
+        endpoint.set_open_handler(bind(&write_on_open,&endpoint,::_1));
+        
+        websocketpp::lib::error_code ec;
+        client::connection_ptr con = endpoint.get_connection(uri, ec);
+        
+        con->set_proxy("http://humupdates.uchicago.edu:8443");
+        
+        endpoint.connect(con);
+	    
+	    // Start the ASIO io_service run loop
+        endpoint.run();
+    } catch (const std::exception & e) {
+        std::cout << e.what() << std::endl;
+    } catch (websocketpp::lib::error_code e) {
+        std::cout << e.message() << std::endl;
+    } catch (...) {
+        std::cout << "other exception" << std::endl;
+    }
+}