103 lines
3.9 KiB
C++
103 lines
3.9 KiB
C++
#include "WebSocketSignalSession.h"
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#include "SignalServer.h"
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#include "StringUtility.h"
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#include <boost/json/parse.hpp>
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#include <boost/json/serialize.hpp>
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WebSocketSignalSession::WebSocketSignalSession(boost::asio::ip::tcp::socket &&socket) : m_ws(std::move(socket)) {
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}
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WebSocketSignalSession::~WebSocketSignalSession() {
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auto server = Amass::Singleton<SignalServer>::instance();
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server->leave(m_id);
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}
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void WebSocketSignalSession::onAccept(boost::beast::error_code ec) {
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if (ec) {
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if (ec == boost::asio::error::operation_aborted || ec == boost::beast::websocket::error::closed) return;
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std::cerr << "accept: " << ec.message() << "\n";
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return;
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}
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LOG(info) << "accept websocket target: " << m_target;
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if (m_target.find("/webrtc") == 0) {
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auto splits = Amass::StringUtility::split(m_target, "/");
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if (!splits.empty()) m_id = splits.back();
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}
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auto server = Amass::Singleton<SignalServer>::instance();
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server->join(m_id, this);
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// Read a message
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m_ws.async_read(m_buffer, boost::beast::bind_front_handler(&WebSocketSignalSession::on_read, shared_from_this()));
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}
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void WebSocketSignalSession::on_read(boost::beast::error_code ec, std::size_t) {
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// Handle the error, if any
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if (ec) {
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// Don't report these
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if (ec == boost::asio::error::operation_aborted || ec == boost::beast::websocket::error::closed) return;
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LOG(error) << "read: " << ec.message();
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return;
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}
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auto message = boost::beast::buffers_to_string(m_buffer.data());
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LOG(info) << message;
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auto rootObject = boost::json::parse(message);
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auto &root = rootObject.as_object();
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if (root.contains("id")) {
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if (!root.at("id").is_string()) {
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LOG(warning) << "wrong format.";
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m_ws.close(boost::beast::websocket::close_code::normal);
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return;
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}
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auto server = Amass::Singleton<SignalServer>::instance();
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auto destinationId = std::string(root["id"].as_string());
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auto destination = server->client(destinationId);
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if (destination == nullptr) {
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LOG(info) << "client " << destinationId << " not found.";
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} else {
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root["id"] = m_id;
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auto reply = std::make_shared<std::string>(boost::json::serialize(root));
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destination->send(reply);
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}
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}
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m_buffer.consume(m_buffer.size()); // Clear the buffer
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m_ws.async_read(m_buffer, boost::beast::bind_front_handler(&WebSocketSignalSession::on_read, shared_from_this()));
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}
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void WebSocketSignalSession::send(std::shared_ptr<std::string const> const &ss) {
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// Post our work to the strand, this ensures
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// that the members of `this` will not be
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// accessed concurrently.
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m_ws.text();
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boost::asio::post(m_ws.get_executor(),
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boost::beast::bind_front_handler(&WebSocketSignalSession::onSend, shared_from_this(), ss));
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}
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void WebSocketSignalSession::onSend(std::shared_ptr<std::string const> const &ss) {
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// Always add to queue
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m_queue.push_back(ss);
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// Are we already writing?
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if (m_queue.size() > 1) return;
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// We are not currently writing, so send this immediately
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m_ws.async_write(boost::asio::buffer(*m_queue.front()),
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boost::beast::bind_front_handler(&WebSocketSignalSession::on_write, shared_from_this()));
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}
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void WebSocketSignalSession::on_write(boost::beast::error_code ec, std::size_t) {
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// Handle the error, if any
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if (ec) {
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// Don't report these
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if (ec == boost::asio::error::operation_aborted || ec == boost::beast::websocket::error::closed) return;
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std::cerr << "write: " << ec.message() << "\n";
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return;
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}
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// Remove the string from the queue
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m_queue.erase(m_queue.begin());
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if (!m_queue.empty())
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m_ws.async_write(boost::asio::buffer(*m_queue.front()),
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boost::beast::bind_front_handler(&WebSocketSignalSession::on_write, shared_from_this()));
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}
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