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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_ws.hpp"
// local headers
#include "common/aixlog.hpp"
// 3rd party headers
// standard headers
#include <iostream>
using namespace std;
static constexpr auto LOG_TAG = "StreamSessionWS";
#ifdef HAS_OPENSSL
StreamSessionWebsocket::StreamSessionWebsocket(StreamMessageReceiver* receiver, const ServerSettings& server_settings, ssl_websocket&& ssl_ws)
: StreamSession(ssl_ws.get_executor(), server_settings, receiver), ssl_ws_(std::move(ssl_ws)), is_ssl_(true)
{
LOG(DEBUG, LOG_TAG) << "StreamSessionWS, mode: ssl\n";
}
#endif
StreamSessionWebsocket::StreamSessionWebsocket(StreamMessageReceiver* receiver, const ServerSettings& server_settings, tcp_websocket&& tcp_ws)
: StreamSession(tcp_ws.get_executor(), server_settings, receiver), tcp_ws_(std::move(tcp_ws)), is_ssl_(false)
{
#ifndef HAS_OPENSSL
std::ignore = is_ssl_;
#endif
LOG(DEBUG, LOG_TAG) << "StreamSessionWS, mode: tcp\n";
}
StreamSessionWebsocket::~StreamSessionWebsocket()
{
LOG(DEBUG, LOG_TAG) << "~StreamSessionWS\n";
stop(); // NOLINT
}
void StreamSessionWebsocket::start()
{
// Read a message
LOG(DEBUG, LOG_TAG) << "start\n";
#ifdef HAS_OPENSSL
if (is_ssl_)
{
ssl_ws_->binary(true);
}
else
#endif
{
tcp_ws_->binary(true);
}
do_read_ws();
}
void StreamSessionWebsocket::stop()
{
LOG(DEBUG, LOG_TAG) << "stop\n";
boost::beast::error_code ec;
#ifdef HAS_OPENSSL
if (is_ssl_)
{
#if 0 // this might not return
if (ssl_ws_->is_open())
ssl_ws_->close(beast::websocket::close_code::normal, ec);
#endif
if (ssl_ws_->next_layer().lowest_layer().is_open())
{
ssl_ws_->next_layer().lowest_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
ssl_ws_->next_layer().lowest_layer().close(ec);
}
}
else
#endif
{
#if 0 // this might not return
if (tcp_ws_->is_open())
tcp_ws_->close(beast::websocket::close_code::normal, ec);
#endif
if (tcp_ws_->next_layer().is_open())
{
tcp_ws_->next_layer().shutdown(boost::asio::ip::tcp::socket::shutdown_both, ec);
tcp_ws_->next_layer().close(ec);
}
}
if (ec)
LOG(ERROR, LOG_TAG) << "Error in socket close: " << ec.message() << "\n";
LOG(DEBUG, LOG_TAG) << "stopped\n";
}
std::string StreamSessionWebsocket::getIP()
{
try
{
#ifdef HAS_OPENSSL
if (is_ssl_)
{
return ssl_ws_->next_layer().lowest_layer().remote_endpoint().address().to_string();
}
else
#endif
{
return tcp_ws_->next_layer().lowest_layer().remote_endpoint().address().to_string();
}
}
catch (...)
{
return "0.0.0.0";
}
}
void StreamSessionWebsocket::sendAsync(const shared_const_buffer& buffer, WriteHandler&& handler)
{
LOG(TRACE, LOG_TAG) << "sendAsync: " << buffer.message().type << "\n";
#ifdef HAS_OPENSSL
if (is_ssl_)
{
ssl_ws_->async_write(buffer, [self = shared_from_this(), buffer, handler = std::move(handler)](boost::system::error_code ec, std::size_t length)
{
if (handler)
handler(ec, length);
});
}
else
#endif
{
tcp_ws_->async_write(buffer, [self = shared_from_this(), buffer, handler = std::move(handler)](boost::system::error_code ec, std::size_t length)
{
if (handler)
handler(ec, length);
});
}
}
void StreamSessionWebsocket::do_read_ws()
{
// Read a message into our buffer
#ifdef HAS_OPENSSL
if (is_ssl_)
{
ssl_ws_->async_read(buffer_,
[this, self = shared_from_this()](beast::error_code ec, std::size_t bytes_transferred) { on_read_ws(ec, bytes_transferred); });
}
else
#endif
{
tcp_ws_->async_read(buffer_,
[this, self = shared_from_this()](beast::error_code ec, std::size_t bytes_transferred) { on_read_ws(ec, bytes_transferred); });
}
}
void StreamSessionWebsocket::on_read_ws(beast::error_code ec, std::size_t bytes_transferred)
{
tv now;
LOG(DEBUG, LOG_TAG) << "on_read_ws, ec: " << ec << ", bytes_transferred: " << bytes_transferred << "\n";
// This indicates that the session was closed
if (ec == websocket::error::closed)
{
messageReceiver_->onDisconnect(this);
return;
}
if (ec)
{
LOG(ERROR, LOG_TAG) << "ControlSessionWebsocket::on_read_ws error: " << ec.message() << "\n";
messageReceiver_->onDisconnect(this);
return;
}
auto* data = static_cast<char*>(buffer_.data().data());
baseMessage_.deserialize(data);
LOG(DEBUG, LOG_TAG) << "getNextMessage: " << baseMessage_.type << ", size: " << baseMessage_.size << ", id: " << baseMessage_.id
<< ", refers: " << baseMessage_.refersTo << "\n";
baseMessage_.received = now;
if (messageReceiver_ != nullptr)
messageReceiver_->onMessageReceived(shared_from_this(), baseMessage_, data + base_msg_size_);
buffer_.consume(bytes_transferred);
do_read_ws();
}
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