123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111 |
- //
- // Copyright (c) 2016-2019 Vinnie Falco (vinnie dot falco at gmail dot com)
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- //
- // Official repository: https://github.com/boostorg/beast
- //
- //------------------------------------------------------------------------------
- //
- // Example: WebSocket SSL client, synchronous
- //
- //------------------------------------------------------------------------------
- #include "example/common/root_certificates.hpp"
- #include <boost/beast/core.hpp>
- #include <boost/beast/ssl.hpp>
- #include <boost/beast/websocket.hpp>
- #include <boost/beast/websocket/ssl.hpp>
- #include <boost/asio/connect.hpp>
- #include <boost/asio/ip/tcp.hpp>
- #include <boost/asio/ssl/stream.hpp>
- #include <cstdlib>
- #include <iostream>
- #include <string>
- namespace beast = boost::beast; // from <boost/beast.hpp>
- namespace http = beast::http; // from <boost/beast/http.hpp>
- namespace websocket = beast::websocket; // from <boost/beast/websocket.hpp>
- namespace net = boost::asio; // from <boost/asio.hpp>
- namespace ssl = boost::asio::ssl; // from <boost/asio/ssl.hpp>
- using tcp = boost::asio::ip::tcp; // from <boost/asio/ip/tcp.hpp>
- // Sends a WebSocket message and prints the response
- int main(int argc, char** argv)
- {
- try
- {
- // Check command line arguments.
- if(argc != 4)
- {
- std::cerr <<
- "Usage: websocket-client-sync-ssl <host> <port> <text>\n" <<
- "Example:\n" <<
- " websocket-client-sync-ssl echo.websocket.org 443 \"Hello, world!\"\n";
- return EXIT_FAILURE;
- }
- auto const host = argv[1];
- auto const port = argv[2];
- auto const text = argv[3];
- // The io_context is required for all I/O
- net::io_context ioc;
- // The SSL context is required, and holds certificates
- ssl::context ctx{ssl::context::tlsv12_client};
- // This holds the root certificate used for verification
- load_root_certificates(ctx);
- // These objects perform our I/O
- tcp::resolver resolver{ioc};
- websocket::stream<beast::ssl_stream<tcp::socket>> ws{ioc, ctx};
- // Look up the domain name
- auto const results = resolver.resolve(host, port);
- // Make the connection on the IP address we get from a lookup
- net::connect(ws.next_layer().next_layer(), results.begin(), results.end());
- // Perform the SSL handshake
- ws.next_layer().handshake(ssl::stream_base::client);
- // Set a decorator to change the User-Agent of the handshake
- ws.set_option(websocket::stream_base::decorator(
- [](websocket::request_type& req)
- {
- req.set(http::field::user_agent,
- std::string(BOOST_BEAST_VERSION_STRING) +
- " websocket-client-coro");
- }));
- // Perform the websocket handshake
- ws.handshake(host, "/");
- // Send the message
- ws.write(net::buffer(std::string(text)));
- // This buffer will hold the incoming message
- beast::flat_buffer buffer;
- // Read a message into our buffer
- ws.read(buffer);
- // Close the WebSocket connection
- ws.close(websocket::close_code::normal);
- // If we get here then the connection is closed gracefully
- // The make_printable() function helps print a ConstBufferSequence
- std::cout << beast::make_printable(buffer.data()) << std::endl;
- }
- catch(std::exception const& e)
- {
- std::cerr << "Error: " << e.what() << std::endl;
- return EXIT_FAILURE;
- }
- return EXIT_SUCCESS;
- }
|