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author Miodrag Milanovic <mmicko@gmail.com>2016-10-07 14:13:19 +0200
committer Miodrag Milanovic <mmicko@gmail.com>2016-10-07 14:13:19 +0200
commitff01b716711b97c2fcaa709ea97f7650f106aa10 (patch)
tree50dd4d687f38f50c4e136af030c02c267c769f3a /3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp
parent2a138159c30457aecd9e9679be5159704db0f954 (diff)
Added ASIO networking library (nw)
Diffstat (limited to '3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp')
-rw-r--r--3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp167
1 files changed, 167 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp b/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp
new file mode 100644
index 00000000000..e672a022d04
--- /dev/null
+++ b/3rdparty/asio/src/examples/cpp11/chat/chat_client.cpp
@@ -0,0 +1,167 @@
+//
+// chat_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 <cstdlib>
+#include <deque>
+#include <iostream>
+#include <thread>
+#include "asio.hpp"
+#include "chat_message.hpp"
+
+using asio::ip::tcp;
+
+typedef std::deque<chat_message> chat_message_queue;
+
+class chat_client
+{
+public:
+ chat_client(asio::io_context& io_context,
+ const tcp::resolver::results_type& endpoints)
+ : io_context_(io_context),
+ socket_(io_context)
+ {
+ do_connect(endpoints);
+ }
+
+ void write(const chat_message& msg)
+ {
+ asio::post(io_context_,
+ [this, msg]()
+ {
+ bool write_in_progress = !write_msgs_.empty();
+ write_msgs_.push_back(msg);
+ if (!write_in_progress)
+ {
+ do_write();
+ }
+ });
+ }
+
+ void close()
+ {
+ asio::post(io_context_, [this]() { socket_.close(); });
+ }
+
+private:
+ void do_connect(const tcp::resolver::results_type& endpoints)
+ {
+ asio::async_connect(socket_, endpoints,
+ [this](std::error_code ec, tcp::endpoint)
+ {
+ if (!ec)
+ {
+ do_read_header();
+ }
+ });
+ }
+
+ void do_read_header()
+ {
+ asio::async_read(socket_,
+ asio::buffer(read_msg_.data(), chat_message::header_length),
+ [this](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec && read_msg_.decode_header())
+ {
+ do_read_body();
+ }
+ else
+ {
+ socket_.close();
+ }
+ });
+ }
+
+ void do_read_body()
+ {
+ asio::async_read(socket_,
+ asio::buffer(read_msg_.body(), read_msg_.body_length()),
+ [this](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec)
+ {
+ std::cout.write(read_msg_.body(), read_msg_.body_length());
+ std::cout << "\n";
+ do_read_header();
+ }
+ else
+ {
+ socket_.close();
+ }
+ });
+ }
+
+ void do_write()
+ {
+ asio::async_write(socket_,
+ asio::buffer(write_msgs_.front().data(),
+ write_msgs_.front().length()),
+ [this](std::error_code ec, std::size_t /*length*/)
+ {
+ if (!ec)
+ {
+ write_msgs_.pop_front();
+ if (!write_msgs_.empty())
+ {
+ do_write();
+ }
+ }
+ else
+ {
+ socket_.close();
+ }
+ });
+ }
+
+private:
+ asio::io_context& io_context_;
+ tcp::socket socket_;
+ chat_message read_msg_;
+ chat_message_queue write_msgs_;
+};
+
+int main(int argc, char* argv[])
+{
+ try
+ {
+ if (argc != 3)
+ {
+ std::cerr << "Usage: chat_client <host> <port>\n";
+ return 1;
+ }
+
+ asio::io_context io_context;
+
+ tcp::resolver resolver(io_context);
+ auto endpoints = resolver.resolve(argv[1], argv[2]);
+ chat_client c(io_context, endpoints);
+
+ std::thread t([&io_context](){ io_context.run(); });
+
+ char line[chat_message::max_body_length + 1];
+ while (std::cin.getline(line, chat_message::max_body_length + 1))
+ {
+ chat_message msg;
+ msg.body_length(std::strlen(line));
+ std::memcpy(msg.body(), line, msg.body_length());
+ msg.encode_header();
+ c.write(msg);
+ }
+
+ c.close();
+ t.join();
+ }
+ catch (std::exception& e)
+ {
+ std::cerr << "Exception: " << e.what() << "\n";
+ }
+
+ return 0;
+}