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author | 2024-04-22 08:04:58 +1000 | |
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committer | 2024-04-22 08:04:58 +1000 | |
commit | 184292b730f4236bd4840e780fdad97ee060ec84 (patch) | |
tree | 67902161a465fe92aec78ca502de07092b8cde0f /3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp | |
parent | 24154bc1f00790f344120b3a85175d6f616c5ad0 (diff) |
3rdparty/asio: Updated to 1.30.2
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp b/3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp deleted file mode 100644 index 67d0bcc7604..00000000000 --- a/3rdparty/asio/src/examples/cpp03/timeouts/blocking_tcp_client.cpp +++ /dev/null @@ -1,191 +0,0 @@ -// -// blocking_tcp_client.cpp -// ~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2021 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/buffer.hpp" -#include "asio/connect.hpp" -#include "asio/io_context.hpp" -#include "asio/ip/tcp.hpp" -#include "asio/read_until.hpp" -#include "asio/system_error.hpp" -#include "asio/write.hpp" -#include <cstdlib> -#include <iostream> -#include <string> -#include <boost/lambda/bind.hpp> -#include <boost/lambda/lambda.hpp> - -using asio::ip::tcp; -using boost::lambda::bind; -using boost::lambda::var; -using boost::lambda::_1; -using boost::lambda::_2; - -//---------------------------------------------------------------------- - -// -// This class manages socket timeouts by running the io_context using the timed -// io_context::run_for() member function. Each asynchronous operation is given -// a timeout within which it must complete. The socket operations themselves -// use boost::lambda function objects as completion handlers. For a given -// socket operation, the client object runs the io_context to block thread -// execution until the operation completes or the timeout is reached. If the -// io_context::run_for() function times out, the socket is closed and the -// outstanding asynchronous operation is cancelled. -// -class client -{ -public: - client() - : socket_(io_context_) - { - } - - void connect(const std::string& host, const std::string& service, - asio::chrono::steady_clock::duration timeout) - { - // Resolve the host name and service to a list of endpoints. - tcp::resolver::results_type endpoints = - tcp::resolver(io_context_).resolve(host, service); - - // Start the asynchronous operation itself. The boost::lambda function - // object is used as a callback and will update the ec variable when the - // operation completes. The blocking_udp_client.cpp example shows how you - // can use boost::bind rather than boost::lambda. - asio::error_code ec; - asio::async_connect(socket_, endpoints, var(ec) = _1); - - // Run the operation until it completes, or until the timeout. - run(timeout); - - // Determine whether a connection was successfully established. - if (ec) - throw asio::system_error(ec); - } - - std::string read_line(asio::chrono::steady_clock::duration timeout) - { - // Start the asynchronous operation. The boost::lambda function object is - // used as a callback and will update the ec variable when the operation - // completes. The blocking_udp_client.cpp example shows how you can use - // boost::bind rather than boost::lambda. - asio::error_code ec; - std::size_t n = 0; - asio::async_read_until(socket_, - asio::dynamic_buffer(input_buffer_), - '\n', (var(ec) = _1, var(n) = _2)); - - // Run the operation until it completes, or until the timeout. - run(timeout); - - // Determine whether the read completed successfully. - if (ec) - throw asio::system_error(ec); - - std::string line(input_buffer_.substr(0, n - 1)); - input_buffer_.erase(0, n); - return line; - } - - void write_line(const std::string& line, - asio::chrono::steady_clock::duration timeout) - { - std::string data = line + "\n"; - - // Start the asynchronous operation. The boost::lambda function object is - // used as a callback and will update the ec variable when the operation - // completes. The blocking_udp_client.cpp example shows how you can use - // boost::bind rather than boost::lambda. - asio::error_code ec; - asio::async_write(socket_, asio::buffer(data), var(ec) = _1); - - // Run the operation until it completes, or until the timeout. - run(timeout); - - // Determine whether the read completed successfully. - if (ec) - throw asio::system_error(ec); - } - -private: - void run(asio::chrono::steady_clock::duration timeout) - { - // Restart the io_context, as it may have been left in the "stopped" state - // by a previous operation. - io_context_.restart(); - - // Block until the asynchronous operation has completed, or timed out. If - // the pending asynchronous operation is a composed operation, the deadline - // applies to the entire operation, rather than individual operations on - // the socket. - io_context_.run_for(timeout); - - // If the asynchronous operation completed successfully then the io_context - // would have been stopped due to running out of work. If it was not - // stopped, then the io_context::run_for call must have timed out. - if (!io_context_.stopped()) - { - // Close the socket to cancel the outstanding asynchronous operation. - socket_.close(); - - // Run the io_context again until the operation completes. - io_context_.run(); - } - } - - asio::io_context io_context_; - tcp::socket socket_; - std::string input_buffer_; -}; - -//---------------------------------------------------------------------- - -int main(int argc, char* argv[]) -{ - try - { - if (argc != 4) - { - std::cerr << "Usage: blocking_tcp_client <host> <port> <message>\n"; - return 1; - } - - client c; - c.connect(argv[1], argv[2], asio::chrono::seconds(10)); - - asio::chrono::steady_clock::time_point time_sent = - asio::chrono::steady_clock::now(); - - c.write_line(argv[3], asio::chrono::seconds(10)); - - for (;;) - { - std::string line = c.read_line(asio::chrono::seconds(10)); - - // Keep going until we get back the line that was sent. - if (line == argv[3]) - break; - } - - asio::chrono::steady_clock::time_point time_received = - asio::chrono::steady_clock::now(); - - std::cout << "Round trip time: "; - std::cout << asio::chrono::duration_cast< - asio::chrono::microseconds>( - time_received - time_sent).count(); - std::cout << " microseconds\n"; - } - catch (std::exception& e) - { - std::cerr << "Exception: " << e.what() << "\n"; - } - - return 0; -} |