238 lines
7.6 KiB
C++
238 lines
7.6 KiB
C++
/*************************************************************************/
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/* emws_peer.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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 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 WEB_ENABLED
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#include "emws_peer.h"
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#include "core/io/ip.h"
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void EMWSPeer::_esws_on_connect(void *p_obj, char *p_proto) {
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EMWSPeer *peer = static_cast<EMWSPeer *>(p_obj);
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peer->ready_state = STATE_OPEN;
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peer->selected_protocol.parse_utf8(p_proto);
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}
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void EMWSPeer::_esws_on_message(void *p_obj, const uint8_t *p_data, int p_data_size, int p_is_string) {
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EMWSPeer *peer = static_cast<EMWSPeer *>(p_obj);
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uint8_t is_string = p_is_string ? 1 : 0;
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peer->in_buffer.write_packet(p_data, p_data_size, &is_string);
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}
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void EMWSPeer::_esws_on_error(void *p_obj) {
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EMWSPeer *peer = static_cast<EMWSPeer *>(p_obj);
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peer->ready_state = STATE_CLOSED;
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}
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void EMWSPeer::_esws_on_close(void *p_obj, int p_code, const char *p_reason, int p_was_clean) {
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EMWSPeer *peer = static_cast<EMWSPeer *>(p_obj);
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peer->close_code = p_code;
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peer->close_reason.parse_utf8(p_reason);
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peer->ready_state = STATE_CLOSED;
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}
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Error EMWSPeer::connect_to_url(const String &p_url, bool p_verify_tls, Ref<X509Certificate> p_tls_certificate) {
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ERR_FAIL_COND_V(ready_state != STATE_CLOSED, ERR_ALREADY_IN_USE);
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_clear();
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String host;
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String path;
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String scheme;
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int port = 0;
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Error err = p_url.parse_url(scheme, host, port, path);
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ERR_FAIL_COND_V_MSG(err != OK, err, "Invalid URL: " + p_url);
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if (scheme.is_empty()) {
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scheme = "ws://";
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}
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ERR_FAIL_COND_V_MSG(scheme != "ws://" && scheme != "wss://", ERR_INVALID_PARAMETER, vformat("Invalid protocol: \"%s\" (must be either \"ws://\" or \"wss://\").", scheme));
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String proto_string;
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for (int i = 0; i < supported_protocols.size(); i++) {
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if (i != 0) {
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proto_string += ",";
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}
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proto_string += supported_protocols[i];
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}
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if (handshake_headers.size()) {
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WARN_PRINT_ONCE("Custom headers are not supported in Web platform.");
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}
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if (p_tls_certificate.is_valid()) {
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WARN_PRINT_ONCE("Custom SSL certificates are not supported in Web platform.");
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}
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requested_url = scheme + host;
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if (port && ((scheme == "ws://" && port != 80) || (scheme == "wss://" && port != 443))) {
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requested_url += ":" + String::num(port);
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}
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peer_sock = godot_js_websocket_create(this, requested_url.utf8().get_data(), proto_string.utf8().get_data(), &_esws_on_connect, &_esws_on_message, &_esws_on_error, &_esws_on_close);
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if (peer_sock == -1) {
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return FAILED;
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}
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in_buffer.resize(nearest_shift(inbound_buffer_size), max_queued_packets);
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packet_buffer.resize(inbound_buffer_size);
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ready_state = STATE_CONNECTING;
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return OK;
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}
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Error EMWSPeer::accept_stream(Ref<StreamPeer> p_stream) {
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WARN_PRINT_ONCE("Acting as WebSocket server is not supported in Web platforms.");
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return ERR_UNAVAILABLE;
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}
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Error EMWSPeer::_send(const uint8_t *p_buffer, int p_buffer_size, bool p_binary) {
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ERR_FAIL_COND_V(outbound_buffer_size > 0 && (get_current_outbound_buffered_amount() + p_buffer_size >= outbound_buffer_size), ERR_OUT_OF_MEMORY);
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if (godot_js_websocket_send(peer_sock, p_buffer, p_buffer_size, p_binary ? 1 : 0) != 0) {
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return FAILED;
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}
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return OK;
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}
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Error EMWSPeer::send(const uint8_t *p_buffer, int p_buffer_size, WriteMode p_mode) {
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return _send(p_buffer, p_buffer_size, p_mode == WRITE_MODE_BINARY);
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}
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Error EMWSPeer::put_packet(const uint8_t *p_buffer, int p_buffer_size) {
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return _send(p_buffer, p_buffer_size, true);
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}
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Error EMWSPeer::get_packet(const uint8_t **r_buffer, int &r_buffer_size) {
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if (in_buffer.packets_left() == 0) {
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return ERR_UNAVAILABLE;
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}
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int read = 0;
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Error err = in_buffer.read_packet(packet_buffer.ptrw(), packet_buffer.size(), &was_string, read);
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ERR_FAIL_COND_V(err != OK, err);
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*r_buffer = packet_buffer.ptr();
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r_buffer_size = read;
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return OK;
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}
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int EMWSPeer::get_available_packet_count() const {
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return in_buffer.packets_left();
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}
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int EMWSPeer::get_current_outbound_buffered_amount() const {
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if (peer_sock != -1) {
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return godot_js_websocket_buffered_amount(peer_sock);
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}
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return 0;
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}
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bool EMWSPeer::was_string_packet() const {
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return was_string;
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}
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void EMWSPeer::_clear() {
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if (peer_sock != -1) {
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godot_js_websocket_destroy(peer_sock);
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peer_sock = -1;
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}
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ready_state = STATE_CLOSED;
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was_string = 0;
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close_code = -1;
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close_reason.clear();
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selected_protocol.clear();
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requested_url.clear();
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in_buffer.clear();
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packet_buffer.clear();
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}
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void EMWSPeer::close(int p_code, String p_reason) {
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if (p_code < 0) {
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if (peer_sock != -1) {
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godot_js_websocket_destroy(peer_sock);
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peer_sock = -1;
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}
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ready_state = STATE_CLOSED;
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}
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if (ready_state == STATE_CONNECTING || ready_state == STATE_OPEN) {
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ready_state = STATE_CLOSING;
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if (peer_sock != -1) {
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godot_js_websocket_close(peer_sock, p_code, p_reason.utf8().get_data());
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} else {
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ready_state = STATE_CLOSED;
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}
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}
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in_buffer.clear();
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packet_buffer.clear();
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}
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void EMWSPeer::poll() {
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// Automatically polled by the navigator.
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}
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WebSocketPeer::State EMWSPeer::get_ready_state() const {
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return ready_state;
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}
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int EMWSPeer::get_close_code() const {
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return close_code;
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}
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String EMWSPeer::get_close_reason() const {
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return close_reason;
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}
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String EMWSPeer::get_selected_protocol() const {
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return selected_protocol;
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}
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String EMWSPeer::get_requested_url() const {
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return requested_url;
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}
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IPAddress EMWSPeer::get_connected_host() const {
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ERR_FAIL_V_MSG(IPAddress(), "Not supported in Web export.");
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}
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uint16_t EMWSPeer::get_connected_port() const {
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ERR_FAIL_V_MSG(0, "Not supported in Web export.");
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}
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void EMWSPeer::set_no_delay(bool p_enabled) {
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ERR_FAIL_MSG("'set_no_delay' is not supported in Web export.");
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}
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EMWSPeer::EMWSPeer() {
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}
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EMWSPeer::~EMWSPeer() {
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_clear();
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}
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#endif // WEB_ENABLED
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