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author Vas Crabb <vas@vastheman.com>2024-04-22 08:04:58 +1000
committer Vas Crabb <vas@vastheman.com>2024-04-22 08:04:58 +1000
commit184292b730f4236bd4840e780fdad97ee060ec84 (patch)
tree67902161a465fe92aec78ca502de07092b8cde0f /3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp
parent24154bc1f00790f344120b3a85175d6f616c5ad0 (diff)
3rdparty/asio: Updated to 1.30.2
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp')
-rw-r--r--3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp201
1 files changed, 0 insertions, 201 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp b/3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp
deleted file mode 100644
index 45b56cb0263..00000000000
--- a/3rdparty/asio/src/examples/cpp03/timeouts/blocking_token_tcp_client.cpp
+++ /dev/null
@@ -1,201 +0,0 @@
-//
-// blocking_token_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/connect.hpp"
-#include "asio/io_context.hpp"
-#include "asio/ip/tcp.hpp"
-#include "asio/read_until.hpp"
-#include "asio/streambuf.hpp"
-#include "asio/system_error.hpp"
-#include "asio/write.hpp"
-#include <cstdlib>
-#include <iostream>
-#include <memory>
-#include <string>
-
-using asio::ip::tcp;
-
-// We will use our sockets only with an io_context.
-typedef asio::basic_stream_socket<tcp,
- asio::io_context::executor_type> tcp_socket;
-
-//----------------------------------------------------------------------
-
-// A custom completion token that makes asynchronous operations behave as
-// though they are blocking calls with a timeout.
-struct close_after
-{
- close_after(asio::chrono::steady_clock::duration t, tcp_socket& s)
- : timeout_(t), socket_(s)
- {
- }
-
- // The maximum time to wait for an asynchronous operation to complete.
- asio::chrono::steady_clock::duration timeout_;
-
- // The socket to be closed if the operation does not complete in time.
- tcp_socket& socket_;
-};
-
-namespace asio {
-
-// The async_result template is specialised to allow the close_after token to
-// be used with asynchronous operations that have a completion signature of
-// void(error_code, T). Generalising this for all completion signature forms is
-// left as an exercise for the reader.
-template <typename T>
-class async_result<close_after, void(asio::error_code, T)>
-{
-public:
- // An asynchronous operation's initiating function automatically creates an
- // completion_handler_type object from the token. This function object is
- // then called on completion of the asynchronous operation.
- class completion_handler_type
- {
- public:
- completion_handler_type(const close_after& token)
- : token_(token)
- {
- }
-
- void operator()(asio::error_code ec, T t)
- {
- *ec_ = ec;
- *t_ = t;
- }
-
- private:
- friend class async_result;
- close_after token_;
- asio::error_code* ec_;
- T* t_;
- };
-
- // The async_result constructor associates the completion handler object with
- // the result of the initiating function.
- explicit async_result(completion_handler_type& h)
- : timeout_(h.token_.timeout_),
- socket_(h.token_.socket_)
- {
- h.ec_ = &ec_;
- h.t_ = &t_;
- }
-
- // The return_type typedef determines the result type of the asynchronous
- // operation's initiating function.
- typedef T return_type;
-
- // The get() function is used to obtain the result of the asynchronous
- // operation's initiating function. For the close_after completion token, we
- // use this function to run the io_context until the operation is complete.
- return_type get()
- {
- asio::io_context& io_context = asio::query(
- socket_.get_executor(), asio::execution::context);
-
- // 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 and the
- // operation is still incomplete.
- 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();
- }
-
- // If the operation failed, throw an exception. Otherwise return the result.
- return ec_ ? throw asio::system_error(ec_) : t_;
- }
-
-private:
- asio::chrono::steady_clock::duration timeout_;
- tcp_socket& socket_;
- asio::error_code ec_;
- T t_;
-};
-
-} // namespace asio
-
-//----------------------------------------------------------------------
-
-int main(int argc, char* argv[])
-{
- try
- {
- if (argc != 4)
- {
- std::cerr << "Usage: blocking_tcp_client <host> <port> <message>\n";
- return 1;
- }
-
- asio::io_context io_context;
-
- // Resolve the host name and service to a list of endpoints.
- tcp::resolver::results_type endpoints =
- tcp::resolver(io_context).resolve(argv[1], argv[2]);
-
- tcp_socket socket(io_context);
-
- // Run an asynchronous connect operation with a timeout.
- asio::async_connect(socket, endpoints,
- close_after(asio::chrono::seconds(10), socket));
-
- asio::chrono::steady_clock::time_point time_sent =
- asio::chrono::steady_clock::now();
-
- // Run an asynchronous write operation with a timeout.
- std::string msg = argv[3] + std::string("\n");
- asio::async_write(socket, asio::buffer(msg),
- close_after(asio::chrono::seconds(10), socket));
-
- for (std::string input_buffer;;)
- {
- // Run an asynchronous read operation with a timeout.
- std::size_t n = asio::async_read_until(socket,
- asio::dynamic_buffer(input_buffer), '\n',
- close_after(asio::chrono::seconds(10), socket));
-
- std::string line(input_buffer.substr(0, n - 1));
- input_buffer.erase(0, n);
-
- // 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;
-}