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/***
This file is part of snapcast
Copyright (C) 2014-2025 Johannes Pohl
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
// prototype/interface header file
#include "stream_session_tcp.hpp"
// local headers
#include "common/aixlog.hpp"
// 3rd party headers
// standard headers
#include <iostream>
using namespace std;
using namespace streamreader;
static constexpr auto LOG_TAG = "StreamSessionTCP";
StreamSessionTcp::StreamSessionTcp(StreamMessageReceiver* receiver, tcp::socket&& socket)
: StreamSession(socket.get_executor(), receiver), socket_(std::move(socket))
{
}
StreamSessionTcp::~StreamSessionTcp()
{
LOG(DEBUG, LOG_TAG) << "~StreamSessionTcp\n";
stop();
}
void StreamSessionTcp::start()
{
read_next();
}
void StreamSessionTcp::stop()
{
LOG(DEBUG, LOG_TAG) << "stop\n";
if (socket_.is_open())
{
boost::system::error_code ec;
socket_.shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
if (ec)
LOG(ERROR, LOG_TAG) << "Error in socket shutdown: " << ec.message() << "\n";
socket_.close(ec);
if (ec)
LOG(ERROR, LOG_TAG) << "Error in socket close: " << ec.message() << "\n";
LOG(DEBUG, LOG_TAG) << "stopped\n";
}
}
std::string StreamSessionTcp::getIP()
{
try
{
return socket_.remote_endpoint().address().to_string();
}
catch (...)
{
return "0.0.0.0";
}
}
void StreamSessionTcp::read_next()
{
boost::asio::async_read(socket_, boost::asio::buffer(buffer_, base_msg_size_),
[this, self = shared_from_this()](boost::system::error_code ec, std::size_t length) mutable
{
if (ec)
{
LOG(ERROR, LOG_TAG) << "Error reading message header of length " << length << ": " << ec.message() << "\n";
messageReceiver_->onDisconnect(this);
return;
}
baseMessage_.deserialize(buffer_.data());
LOG(DEBUG, LOG_TAG) << "getNextMessage: " << baseMessage_.type << ", size: " << baseMessage_.size << ", id: " << baseMessage_.id
<< ", refers: " << baseMessage_.refersTo << "\n";
if (baseMessage_.type > message_type::kLast)
{
LOG(ERROR, LOG_TAG) << "unknown message type received: " << baseMessage_.type << ", size: " << baseMessage_.size << "\n";
messageReceiver_->onDisconnect(this);
return;
}
else if (baseMessage_.size > msg::max_size)
{
LOG(ERROR, LOG_TAG) << "received message of type " << baseMessage_.type << " to large: " << baseMessage_.size << "\n";
messageReceiver_->onDisconnect(this);
return;
}
if (baseMessage_.size > buffer_.size())
buffer_.resize(baseMessage_.size);
boost::asio::async_read(socket_, boost::asio::buffer(buffer_, baseMessage_.size), [this, self](boost::system::error_code ec, std::size_t length) mutable
{
if (ec)
{
LOG(ERROR, LOG_TAG) << "Error reading message body of length " << length << ": " << ec.message() << "\n";
messageReceiver_->onDisconnect(this);
return;
}
tv now;
baseMessage_.received = now;
if (messageReceiver_ != nullptr)
messageReceiver_->onMessageReceived(this, baseMessage_, buffer_.data());
read_next();
});
});
}
void StreamSessionTcp::sendAsync(const shared_const_buffer& buffer, const WriteHandler& handler)
{
boost::asio::async_write(socket_, buffer,
[self = shared_from_this(), buffer, handler](boost::system::error_code ec, std::size_t length) { handler(ec, length); });
}
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