95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
//
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// sync_client.cpp
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// ~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include <iostream>
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#include <iomanip>
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#include <ostream>
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#include <string>
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#include <boost/asio.hpp>
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#include <boost/array.hpp>
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#include "socks4.hpp"
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using boost::asio::ip::tcp;
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int main(int argc, char* argv[])
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{
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try
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{
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if (argc != 4)
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{
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std::cout << "Usage: sync_client <socks4server> <socks4port> <user>\n";
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std::cout << "Examples:\n";
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std::cout << " sync_client 127.0.0.1 1080 chris\n";
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std::cout << " sync_client localhost socks chris\n";
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return 1;
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}
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boost::asio::io_context io_context;
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// Get a list of endpoints corresponding to the SOCKS 4 server name.
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tcp::resolver resolver(io_context);
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tcp::resolver::results_type endpoints = resolver.resolve(argv[1], argv[2]);
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// Try each endpoint until we successfully establish a connection to the
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// SOCKS 4 server.
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tcp::socket socket(io_context);
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boost::asio::connect(socket, endpoints);
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// Get an endpoint for the Boost website. This will be passed to the SOCKS
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// 4 server. Explicitly specify IPv4 since SOCKS 4 does not support IPv6.
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tcp::endpoint http_endpoint =
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*resolver.resolve(tcp::v4(), "www.boost.org", "http").begin();
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// Send the request to the SOCKS 4 server.
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socks4::request socks_request(
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socks4::request::connect, http_endpoint, argv[3]);
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boost::asio::write(socket, socks_request.buffers());
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// Receive a response from the SOCKS 4 server.
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socks4::reply socks_reply;
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boost::asio::read(socket, socks_reply.buffers());
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// Check whether we successfully negotiated with the SOCKS 4 server.
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if (!socks_reply.success())
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{
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std::cout << "Connection failed.\n";
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std::cout << "status = 0x" << std::hex << socks_reply.status();
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return 1;
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}
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// Form the HTTP request. We specify the "Connection: close" header so that
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// the server will close the socket after transmitting the response. This
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// will allow us to treat all data up until the EOF as the response.
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std::string request =
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"GET / HTTP/1.0\r\n"
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"Host: www.boost.org\r\n"
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"Accept: */*\r\n"
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"Connection: close\r\n\r\n";
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// Send the HTTP request.
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boost::asio::write(socket, boost::asio::buffer(request));
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// Read until EOF, writing data to output as we go.
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boost::array<char, 512> response;
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boost::system::error_code error;
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while (std::size_t s = socket.read_some(
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boost::asio::buffer(response), error))
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std::cout.write(response.data(), s);
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if (error != boost::asio::error::eof)
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throw boost::system::system_error(error);
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}
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catch (std::exception& e)
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{
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std::cout << "Exception: " << e.what() << "\n";
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}
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return 0;
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}
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