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-rw-r--r--3rdparty/asio/src/examples/cpp03/porthopper/client.cpp192
1 files changed, 0 insertions, 192 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/porthopper/client.cpp b/3rdparty/asio/src/examples/cpp03/porthopper/client.cpp
deleted file mode 100644
index 15d8e4803c1..00000000000
--- a/3rdparty/asio/src/examples/cpp03/porthopper/client.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-//
-// client.cpp
-// ~~~~~~~~~~
-//
-// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff 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 <asio.hpp>
-#include <boost/lambda/lambda.hpp>
-#include <boost/lambda/bind.hpp>
-#include <boost/lambda/if.hpp>
-#include <boost/shared_ptr.hpp>
-#include <algorithm>
-#include <cstdlib>
-#include <exception>
-#include <iostream>
-#include <string>
-#include "protocol.hpp"
-
-using namespace boost;
-using asio::ip::tcp;
-using asio::ip::udp;
-
-int main(int argc, char* argv[])
-{
- try
- {
- if (argc != 3)
- {
- std::cerr << "Usage: client <host> <port>\n";
- return 1;
- }
- using namespace std; // For atoi.
- std::string host_name = argv[1];
- std::string port = argv[2];
-
- asio::io_context io_context;
-
- // Determine the location of the server.
- tcp::resolver resolver(io_context);
- tcp::endpoint remote_endpoint = *resolver.resolve(host_name, port).begin();
-
- // Establish the control connection to the server.
- tcp::socket control_socket(io_context);
- control_socket.connect(remote_endpoint);
-
- // Create a datagram socket to receive data from the server.
- boost::shared_ptr<udp::socket> data_socket(
- new udp::socket(io_context, udp::endpoint(udp::v4(), 0)));
-
- // Determine what port we will receive data on.
- udp::endpoint data_endpoint = data_socket->local_endpoint();
-
- // Ask the server to start sending us data.
- control_request start = control_request::start(data_endpoint.port());
- asio::write(control_socket, start.to_buffers());
-
- unsigned long last_frame_number = 0;
- for (;;)
- {
- // Receive 50 messages on the current data socket.
- for (int i = 0; i < 50; ++i)
- {
- // Receive a frame from the server.
- frame f;
- data_socket->receive(f.to_buffers(), 0);
- if (f.number() > last_frame_number)
- {
- last_frame_number = f.number();
- std::cout << "\n" << f.payload();
- }
- }
-
- // Time to switch to a new socket. To ensure seamless handover we will
- // continue to receive packets using the old socket until data arrives on
- // the new one.
- std::cout << " Starting renegotiation";
-
- // Create the new data socket.
- boost::shared_ptr<udp::socket> new_data_socket(
- new udp::socket(io_context, udp::endpoint(udp::v4(), 0)));
-
- // Determine the new port we will use to receive data.
- udp::endpoint new_data_endpoint = new_data_socket->local_endpoint();
-
- // Ask the server to switch over to the new port.
- control_request change = control_request::change(
- data_endpoint.port(), new_data_endpoint.port());
- asio::error_code control_result;
- asio::async_write(control_socket, change.to_buffers(),
- (
- lambda::var(control_result) = lambda::_1
- ));
-
- // Try to receive a frame from the server on the new data socket. If we
- // successfully receive a frame on this new data socket we can consider
- // the renegotation complete. In that case we will close the old data
- // socket, which will cause any outstanding receive operation on it to be
- // cancelled.
- frame f1;
- asio::error_code new_data_socket_result;
- new_data_socket->async_receive(f1.to_buffers(),
- (
- // Note: lambda::_1 is the first argument to the callback handler,
- // which in this case is the error code for the operation.
- lambda::var(new_data_socket_result) = lambda::_1,
- lambda::if_(!lambda::_1)
- [
- // We have successfully received a frame on the new data socket,
- // so we can close the old data socket. This will cancel any
- // outstanding receive operation on the old data socket.
- lambda::var(data_socket) = boost::shared_ptr<udp::socket>()
- ]
- ));
-
- // This loop will continue until we have successfully completed the
- // renegotiation (i.e. received a frame on the new data socket), or some
- // unrecoverable error occurs.
- bool done = false;
- while (!done)
- {
- // Even though we're performing a renegotation, we want to continue
- // receiving data as smoothly as possible. Therefore we will continue to
- // try to receive a frame from the server on the old data socket. If we
- // receive a frame on this socket we will interrupt the io_context,
- // print the frame, and resume waiting for the other operations to
- // complete.
- frame f2;
- done = true; // Let's be optimistic.
- if (data_socket) // Might have been closed by new_data_socket's handler.
- {
- data_socket->async_receive(f2.to_buffers(), 0,
- (
- lambda::if_(!lambda::_1)
- [
- // We have successfully received a frame on the old data
- // socket. Stop the io_context so that we can print it.
- lambda::bind(&asio::io_context::stop, &io_context),
- lambda::var(done) = false
- ]
- ));
- }
-
- // Run the operations in parallel. This will block until all operations
- // have finished, or until the io_context is interrupted. (No threads!)
- io_context.restart();
- io_context.run();
-
- // If the io_context.run() was interrupted then we have received a frame
- // on the old data socket. We need to keep waiting for the renegotation
- // operations to complete.
- if (!done)
- {
- if (f2.number() > last_frame_number)
- {
- last_frame_number = f2.number();
- std::cout << "\n" << f2.payload();
- }
- }
- }
-
- // Since the loop has finished, we have either successfully completed
- // the renegotation, or an error has occurred. First we'll check for
- // errors.
- if (control_result)
- throw asio::system_error(control_result);
- if (new_data_socket_result)
- throw asio::system_error(new_data_socket_result);
-
- // If we get here it means we have successfully started receiving data on
- // the new data socket. This new data socket will be used from now on
- // (until the next time we renegotiate).
- std::cout << " Renegotiation complete";
- data_socket = new_data_socket;
- data_endpoint = new_data_endpoint;
- if (f1.number() > last_frame_number)
- {
- last_frame_number = f1.number();
- std::cout << "\n" << f1.payload();
- }
- }
- }
- catch (std::exception& e)
- {
- std::cerr << "Exception: " << e.what() << std::endl;
- }
-
- return 0;
-}