Merge pull request #22 from acgreek/websocketpp_example

Websocketpp example

examples/websocket_tls/client_websocketpp/Makefile

@@ -0,0 +1,15 @@
+all: client
+
+websocketpp:
+	git clone https://github.com/zaphoyd/websocketpp
+
+client: websocketpp client.cpp
+	g++  -std=c++11  -L /usr/local/opt/openssl@1.1/lib -l ssl  -lcrypto -lboost_system -lboost_chrono -lboost_random -I /usr/local/opt/openssl@1.1/include -I websocketpp -o $@ client.cpp
+
+test: client
+	./client wss://echo.websocket.org
+
+test_local: client
+	./client
+
+.PHONY: all test test_local

examples/websocket_tls/client_websocketpp/client.cpp

@@ -0,0 +1,84 @@
+#include <websocketpp/config/asio_client.hpp>
+#include <websocketpp/client.hpp>
+
+#include <iostream>
+#include <strings.h>
+
+typedef websocketpp::client<websocketpp::config::asio_tls_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 sendFunc(client* c,websocketpp::connection_hdl hdl) {
+    websocketpp::lib::error_code ec;
+    char *in = "Be careful when adding or removing oneof fields. If checking the value of a oneof returns None/NOT_SET, it could mean that the oneof has not been set or it has been set to a field in a different version of the oneof. There is no way to tell the difference, since there's no way to know if an unknown field on the wire is a member of the oneof.hello world";
+    c->send(hdl, in, strlen(in), websocketpp::frame::opcode::binary, ec);
+    if (ec) {
+        std::cout << "Echo failed because: " << ec.message() << std::endl;
+    }
+}
+// This message handler will be invoked once for each incoming message. It
+// prints the message and then sends a copy of the message back to the server.
+void on_message(client* c, websocketpp::connection_hdl hdl, message_ptr msg) {
+    std::cout << "on_message called with hdl: " << hdl.lock().get()
+              << " and message: " << msg->get_payload()
+              << std::endl;
+
+
+    websocketpp::lib::error_code ec;
+
+    c->send(hdl, msg->get_payload(), msg->get_opcode(), ec);
+    if (ec) {
+        std::cout << "Echo failed because: " << ec.message() << std::endl;
+    }
+}
+
+int main(int argc, char* argv[]) {
+    // Create a client endpoint
+    client c;
+    c.set_tls_init_handler([&c](websocketpp::connection_hdl){
+   	 return websocketpp::lib::make_shared<boost::asio::ssl::context>(boost::asio::ssl::context::tlsv12);
+	});
+
+    std::string uri = "wss://localhost:8888/wss";
+
+    if (argc == 2) {
+        uri = argv[1];
+    }
+
+    try {
+        // Set logging to be pretty verbose (everything except message payloads)
+        c.set_access_channels(websocketpp::log::alevel::all);
+        c.clear_access_channels(websocketpp::log::alevel::frame_payload);
+
+        // Initialize ASIO
+        c.init_asio();
+
+        // Register our message handler
+        c.set_message_handler(bind(&on_message,&c,::_1,::_2));
+        c.set_open_handler(bind(&sendFunc,&c,::_1));
+
+
+        websocketpp::lib::error_code ec;
+        client::connection_ptr con = c.get_connection(uri, ec);
+        if (ec) {
+            std::cout << "could not create connection because: " << ec.message() << std::endl;
+            return 0;
+        }
+
+        // Note that connect here only requests a connection. No network messages are
+        // exchanged until the event loop starts running in the next line.
+        c.connect(con);
+
+        // Start the ASIO io_service run loop
+        // this will cause a single connection to be made to the server. c.run()
+        // will exit when this connection is closed.
+        c.run();
+    } catch (websocketpp::exception const & e) {
+        std::cout << e.what() << std::endl;
+    }
+}