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/*************************************************************************/
/*  editor_debugger_server_websocket.cpp                                 */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "editor_debugger_server_websocket.h"

#include "core/project_settings.h"
#include "editor/editor_settings.h"
#include "modules/websocket/remote_debugger_peer_websocket.h"

void EditorDebuggerServerWebSocket::_peer_connected(int p_id, String _protocol) {
	pending_peers.push_back(p_id);
}

void EditorDebuggerServerWebSocket::_peer_disconnected(int p_id, bool p_was_clean) {
	if (pending_peers.find(p_id)) {
		pending_peers.erase(p_id);
	}
}

void EditorDebuggerServerWebSocket::poll() {
	server->poll();
}

Error EditorDebuggerServerWebSocket::start() {
	int remote_port = (int)EditorSettings::get_singleton()->get("network/debug/remote_port");
	Vector<String> protocols;
	protocols.push_back("binary"); // compatibility with EMSCRIPTEN TCP-to-WebSocket layer.
	return server->listen(remote_port, protocols);
}

void EditorDebuggerServerWebSocket::stop() {
	server->stop();
	pending_peers.clear();
}

bool EditorDebuggerServerWebSocket::is_active() const {
	return server->is_listening();
}

bool EditorDebuggerServerWebSocket::is_connection_available() const {
	return pending_peers.size() > 0;
}

Ref<RemoteDebuggerPeer> EditorDebuggerServerWebSocket::take_connection() {
	ERR_FAIL_COND_V(!is_connection_available(), Ref<RemoteDebuggerPeer>());
	RemoteDebuggerPeer *peer = memnew(RemoteDebuggerPeerWebSocket(server->get_peer(pending_peers[0])));
	pending_peers.pop_front();
	return peer;
}

EditorDebuggerServerWebSocket::EditorDebuggerServerWebSocket() {
	server = Ref<WebSocketServer>(WebSocketServer::create());
	int max_pkts = (int)GLOBAL_GET("network/limits/debugger/max_queued_messages");
	server->set_buffers(8192, max_pkts, 8192, max_pkts);
	server->connect("client_connected", callable_mp(this, &EditorDebuggerServerWebSocket::_peer_connected));
	server->connect("client_disconnected", callable_mp(this, &EditorDebuggerServerWebSocket::_peer_disconnected));
}

EditorDebuggerServerWebSocket::~EditorDebuggerServerWebSocket() {
	stop();
}

EditorDebuggerServer *EditorDebuggerServerWebSocket::create(const String &p_protocol) {
	ERR_FAIL_COND_V(p_protocol != "ws://", nullptr);
	return memnew(EditorDebuggerServerWebSocket);
}