//
-// Copyright (c) 2016-2017 Vinnie Falco (vinnie dot falco at gmail dot com)
+// 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)
#include <boost/beast/core.hpp>
#include <boost/beast/http.hpp>
+#include <boost/beast/ssl.hpp>
#include <boost/beast/version.hpp>
-#include <boost/asio/connect.hpp>
-#include <boost/asio/ip/tcp.hpp>
-#include <boost/asio/ssl/error.hpp>
-#include <boost/asio/ssl/stream.hpp>
+#include <boost/asio/strand.hpp>
#include <cstdlib>
#include <functional>
#include <iostream>
#include <memory>
#include <string>
-using tcp = boost::asio::ip::tcp; // from <boost/asio/ip/tcp.hpp>
+namespace beast = boost::beast; // from <boost/beast.hpp>
+namespace http = beast::http; // from <boost/beast/http.hpp>
+namespace net = boost::asio; // from <boost/asio.hpp>
namespace ssl = boost::asio::ssl; // from <boost/asio/ssl.hpp>
-namespace http = boost::beast::http; // from <boost/beast/http.hpp>
+using tcp = boost::asio::ip::tcp; // from <boost/asio/ip/tcp.hpp>
//------------------------------------------------------------------------------
// Report a failure
void
-fail(boost::system::error_code ec, char const* what)
+fail(beast::error_code ec, char const* what)
{
std::cerr << what << ": " << ec.message() << "\n";
}
class session : public std::enable_shared_from_this<session>
{
tcp::resolver resolver_;
- ssl::stream<tcp::socket> stream_;
- boost::beast::flat_buffer buffer_; // (Must persist between reads)
+ beast::ssl_stream<beast::tcp_stream> stream_;
+ beast::flat_buffer buffer_; // (Must persist between reads)
http::request<http::empty_body> req_;
http::response<http::string_body> res_;
public:
- // Resolver and stream require an io_context
+ // Objects are constructed with a strand to
+ // ensure that handlers do not execute concurrently.
explicit
- session(boost::asio::io_context& ioc, ssl::context& ctx)
- : resolver_(ioc)
- , stream_(ioc, ctx)
+ session(net::io_context& ioc, ssl::context& ctx)
+ : resolver_(net::make_strand(ioc))
+ , stream_(net::make_strand(ioc), ctx)
{
}
// Set SNI Hostname (many hosts need this to handshake successfully)
if(! SSL_set_tlsext_host_name(stream_.native_handle(), host))
{
- boost::system::error_code ec{static_cast<int>(::ERR_get_error()), boost::asio::error::get_ssl_category()};
+ beast::error_code ec{static_cast<int>(::ERR_get_error()), net::error::get_ssl_category()};
std::cerr << ec.message() << "\n";
return;
}
resolver_.async_resolve(
host,
port,
- std::bind(
+ beast::bind_front_handler(
&session::on_resolve,
- shared_from_this(),
- std::placeholders::_1,
- std::placeholders::_2));
+ shared_from_this()));
}
void
on_resolve(
- boost::system::error_code ec,
+ beast::error_code ec,
tcp::resolver::results_type results)
{
if(ec)
return fail(ec, "resolve");
+ // Set a timeout on the operation
+ beast::get_lowest_layer(stream_).expires_after(std::chrono::seconds(30));
+
// Make the connection on the IP address we get from a lookup
- boost::asio::async_connect(
- stream_.next_layer(),
- results.begin(),
- results.end(),
- std::bind(
+ beast::get_lowest_layer(stream_).async_connect(
+ results,
+ beast::bind_front_handler(
&session::on_connect,
- shared_from_this(),
- std::placeholders::_1));
+ shared_from_this()));
}
void
- on_connect(boost::system::error_code ec)
+ on_connect(beast::error_code ec, tcp::resolver::results_type::endpoint_type)
{
if(ec)
return fail(ec, "connect");
// Perform the SSL handshake
stream_.async_handshake(
ssl::stream_base::client,
- std::bind(
+ beast::bind_front_handler(
&session::on_handshake,
- shared_from_this(),
- std::placeholders::_1));
+ shared_from_this()));
}
void
- on_handshake(boost::system::error_code ec)
+ on_handshake(beast::error_code ec)
{
if(ec)
return fail(ec, "handshake");
+ // Set a timeout on the operation
+ beast::get_lowest_layer(stream_).expires_after(std::chrono::seconds(30));
+
// Send the HTTP request to the remote host
http::async_write(stream_, req_,
- std::bind(
+ beast::bind_front_handler(
&session::on_write,
- shared_from_this(),
- std::placeholders::_1,
- std::placeholders::_2));
+ shared_from_this()));
}
void
on_write(
- boost::system::error_code ec,
+ beast::error_code ec,
std::size_t bytes_transferred)
{
boost::ignore_unused(bytes_transferred);
if(ec)
return fail(ec, "write");
-
+
// Receive the HTTP response
http::async_read(stream_, buffer_, res_,
- std::bind(
+ beast::bind_front_handler(
&session::on_read,
- shared_from_this(),
- std::placeholders::_1,
- std::placeholders::_2));
+ shared_from_this()));
}
void
on_read(
- boost::system::error_code ec,
+ beast::error_code ec,
std::size_t bytes_transferred)
{
boost::ignore_unused(bytes_transferred);
// Write the message to standard out
std::cout << res_ << std::endl;
+ // Set a timeout on the operation
+ beast::get_lowest_layer(stream_).expires_after(std::chrono::seconds(30));
+
// Gracefully close the stream
stream_.async_shutdown(
- std::bind(
+ beast::bind_front_handler(
&session::on_shutdown,
- shared_from_this(),
- std::placeholders::_1));
+ shared_from_this()));
}
void
- on_shutdown(boost::system::error_code ec)
+ on_shutdown(beast::error_code ec)
{
- if(ec == boost::asio::error::eof)
+ if(ec == net::error::eof)
{
// Rationale:
// http://stackoverflow.com/questions/25587403/boost-asio-ssl-async-shutdown-always-finishes-with-an-error
- ec.assign(0, ec.category());
+ ec = {};
}
if(ec)
return fail(ec, "shutdown");
int version = argc == 5 && !std::strcmp("1.0", argv[4]) ? 10 : 11;
// The io_context is required for all I/O
- boost::asio::io_context ioc;
+ net::io_context ioc;
// The SSL context is required, and holds certificates
- ssl::context ctx{ssl::context::sslv23_client};
+ ssl::context ctx{ssl::context::tlsv12_client};
// This holds the root certificate used for verification
load_root_certificates(ctx);
+ // Verify the remote server's certificate
+ ctx.set_verify_mode(ssl::verify_peer);
+
// Launch the asynchronous operation
std::make_shared<session>(ioc, ctx)->run(host, port, target, version);