232 lines
7 KiB
C++
232 lines
7 KiB
C++
/*************************************************************************/
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/* emws_client.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifdef JAVASCRIPT_ENABLED
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#include "emws_client.h"
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#include "core/io/ip.h"
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#include "core/project_settings.h"
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#include "emscripten.h"
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extern "C" {
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EMSCRIPTEN_KEEPALIVE void _esws_on_connect(void *obj, char *proto) {
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EMWSClient *client = static_cast<EMWSClient *>(obj);
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client->_is_connecting = false;
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client->_on_connect(String(proto));
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}
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EMSCRIPTEN_KEEPALIVE void _esws_on_message(void *obj, uint8_t *p_data, int p_data_size, int p_is_string) {
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EMWSClient *client = static_cast<EMWSClient *>(obj);
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Error err = static_cast<EMWSPeer *>(*client->get_peer(1))->read_msg(p_data, p_data_size, p_is_string == 1);
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if (err == OK)
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client->_on_peer_packet();
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}
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EMSCRIPTEN_KEEPALIVE void _esws_on_error(void *obj) {
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EMWSClient *client = static_cast<EMWSClient *>(obj);
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client->_is_connecting = false;
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client->_on_error();
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}
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EMSCRIPTEN_KEEPALIVE void _esws_on_close(void *obj, int code, char *reason, int was_clean) {
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EMWSClient *client = static_cast<EMWSClient *>(obj);
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client->_on_close_request(code, String(reason));
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client->_is_connecting = false;
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client->_on_disconnect(was_clean != 0);
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}
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}
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Error EMWSClient::connect_to_host(String p_host, String p_path, uint16_t p_port, bool p_ssl, PoolVector<String> p_protocols) {
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String proto_string = p_protocols.join(",");
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String str = "ws://";
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if (p_ssl)
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str = "wss://";
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str += p_host + ":" + itos(p_port) + p_path;
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_is_connecting = true;
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/* clang-format off */
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int peer_sock = EM_ASM_INT({
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var proto_str = UTF8ToString($2);
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var socket = null;
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if (proto_str) {
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socket = new WebSocket(UTF8ToString($1), proto_str.split(","));
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} else {
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socket = new WebSocket(UTF8ToString($1));
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}
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var c_ptr = Module.IDHandler.get($0);
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socket.binaryType = "arraybuffer";
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// Connection opened
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socket.addEventListener("open", function (event) {
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if (!Module.IDHandler.has($0))
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return; // Godot Object is gone!
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ccall("_esws_on_connect",
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"void",
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["number", "string"],
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[c_ptr, socket.protocol]
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);
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});
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// Listen for messages
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socket.addEventListener("message", function (event) {
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if (!Module.IDHandler.has($0))
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return; // Godot Object is gone!
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var buffer;
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var is_string = 0;
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if (event.data instanceof ArrayBuffer) {
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buffer = new Uint8Array(event.data);
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} else if (event.data instanceof Blob) {
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alert("Blob type not supported");
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return;
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} else if (typeof event.data === "string") {
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is_string = 1;
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var enc = new TextEncoder("utf-8");
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buffer = new Uint8Array(enc.encode(event.data));
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} else {
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alert("Unknown message type");
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return;
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}
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var len = buffer.length*buffer.BYTES_PER_ELEMENT;
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var out = Module._malloc(len);
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Module.HEAPU8.set(buffer, out);
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ccall("_esws_on_message",
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"void",
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["number", "number", "number", "number"],
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[c_ptr, out, len, is_string]
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);
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Module._free(out);
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});
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socket.addEventListener("error", function (event) {
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if (!Module.IDHandler.has($0))
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return; // Godot Object is gone!
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ccall("_esws_on_error",
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"void",
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["number"],
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[c_ptr]
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);
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});
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socket.addEventListener("close", function (event) {
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if (!Module.IDHandler.has($0))
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return; // Godot Object is gone!
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var was_clean = 0;
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if (event.wasClean)
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was_clean = 1;
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ccall("_esws_on_close",
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"void",
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["number", "number", "string", "number"],
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[c_ptr, event.code, event.reason, was_clean]
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);
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});
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return Module.IDHandler.add(socket);
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}, _js_id, str.utf8().get_data(), proto_string.utf8().get_data());
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/* clang-format on */
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static_cast<Ref<EMWSPeer> >(_peer)->set_sock(peer_sock, _in_buf_size, _in_pkt_size);
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return OK;
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};
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void EMWSClient::poll() {
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}
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Ref<WebSocketPeer> EMWSClient::get_peer(int p_peer_id) const {
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return _peer;
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}
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NetworkedMultiplayerPeer::ConnectionStatus EMWSClient::get_connection_status() const {
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if (_peer->is_connected_to_host())
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return CONNECTION_CONNECTED;
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if (_is_connecting)
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return CONNECTION_CONNECTING;
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return CONNECTION_DISCONNECTED;
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};
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void EMWSClient::disconnect_from_host(int p_code, String p_reason) {
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_peer->close(p_code, p_reason);
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};
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IP_Address EMWSClient::get_connected_host() const {
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return IP_Address();
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};
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uint16_t EMWSClient::get_connected_port() const {
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return 1025;
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};
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int EMWSClient::get_max_packet_size() const {
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return (1 << _in_buf_size) - PROTO_SIZE;
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}
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EMWSClient::EMWSClient() {
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_in_buf_size = nearest_shift((int)GLOBAL_GET(WSC_IN_BUF) - 1) + 10;
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_in_pkt_size = nearest_shift((int)GLOBAL_GET(WSC_IN_PKT) - 1);
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_is_connecting = false;
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_peer = Ref<EMWSPeer>(memnew(EMWSPeer));
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/* clang-format off */
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_js_id = EM_ASM_INT({
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return Module.IDHandler.add($0);
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}, this);
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/* clang-format on */
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};
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EMWSClient::~EMWSClient() {
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disconnect_from_host();
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_peer = Ref<EMWSPeer>();
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/* clang-format off */
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EM_ASM({
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Module.IDHandler.remove($0);
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}, _js_id);
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/* clang-format on */
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};
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#endif // JAVASCRIPT_ENABLED
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