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https://github.com/godotengine/godot
synced 2024-09-06 06:04:31 +00:00
![Rémi Verschelde](/assets/img/avatar_default.png)
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
339 lines
9.9 KiB
C++
339 lines
9.9 KiB
C++
/**************************************************************************/
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/* stream_peer_tcp.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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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#include "stream_peer_tcp.h"
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#include "core/config/project_settings.h"
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Error StreamPeerTCP::poll() {
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if (status == STATUS_CONNECTED) {
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Error err;
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err = _sock->poll(NetSocket::POLL_TYPE_IN, 0);
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if (err == OK) {
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// FIN received
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if (_sock->get_available_bytes() == 0) {
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disconnect_from_host();
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return OK;
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}
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}
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// Also poll write
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err = _sock->poll(NetSocket::POLL_TYPE_IN_OUT, 0);
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if (err != OK && err != ERR_BUSY) {
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// Got an error
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disconnect_from_host();
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status = STATUS_ERROR;
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return err;
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}
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} else if (status != STATUS_CONNECTING) {
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return OK;
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}
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Error err = _sock->connect_to_host(peer_host, peer_port);
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if (err == OK) {
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status = STATUS_CONNECTED;
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return OK;
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} else if (err == ERR_BUSY) {
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// Check for connect timeout
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if (OS::get_singleton()->get_ticks_msec() > timeout) {
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disconnect_from_host();
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status = STATUS_ERROR;
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return ERR_CONNECTION_ERROR;
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}
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// Still trying to connect
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return OK;
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}
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disconnect_from_host();
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status = STATUS_ERROR;
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return ERR_CONNECTION_ERROR;
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}
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void StreamPeerTCP::accept_socket(Ref<NetSocket> p_sock, IPAddress p_host, uint16_t p_port) {
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_sock = p_sock;
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_sock->set_blocking_enabled(false);
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timeout = OS::get_singleton()->get_ticks_msec() + (((uint64_t)GLOBAL_GET("network/limits/tcp/connect_timeout_seconds")) * 1000);
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status = STATUS_CONNECTED;
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peer_host = p_host;
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peer_port = p_port;
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}
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Error StreamPeerTCP::bind(int p_port, const IPAddress &p_host) {
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ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE);
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ERR_FAIL_COND_V(_sock->is_open(), ERR_ALREADY_IN_USE);
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ERR_FAIL_COND_V_MSG(p_port < 0 || p_port > 65535, ERR_INVALID_PARAMETER, "The local port number must be between 0 and 65535 (inclusive).");
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IP::Type ip_type = p_host.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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if (p_host.is_wildcard()) {
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ip_type = IP::TYPE_ANY;
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}
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Error err = _sock->open(NetSocket::TYPE_TCP, ip_type);
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if (err != OK) {
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return err;
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}
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_sock->set_blocking_enabled(false);
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return _sock->bind(p_host, p_port);
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}
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Error StreamPeerTCP::connect_to_host(const IPAddress &p_host, int p_port) {
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ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE);
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ERR_FAIL_COND_V(status != STATUS_NONE, ERR_ALREADY_IN_USE);
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ERR_FAIL_COND_V(!p_host.is_valid(), ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V_MSG(p_port < 1 || p_port > 65535, ERR_INVALID_PARAMETER, "The remote port number must be between 1 and 65535 (inclusive).");
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if (!_sock->is_open()) {
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IP::Type ip_type = p_host.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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Error err = _sock->open(NetSocket::TYPE_TCP, ip_type);
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if (err != OK) {
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return err;
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}
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_sock->set_blocking_enabled(false);
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}
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timeout = OS::get_singleton()->get_ticks_msec() + (((uint64_t)GLOBAL_GET("network/limits/tcp/connect_timeout_seconds")) * 1000);
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Error err = _sock->connect_to_host(p_host, p_port);
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if (err == OK) {
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status = STATUS_CONNECTED;
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} else if (err == ERR_BUSY) {
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status = STATUS_CONNECTING;
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} else {
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ERR_PRINT("Connection to remote host failed!");
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disconnect_from_host();
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return FAILED;
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}
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peer_host = p_host;
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peer_port = p_port;
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return OK;
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}
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Error StreamPeerTCP::write(const uint8_t *p_data, int p_bytes, int &r_sent, bool p_block) {
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ERR_FAIL_COND_V(!_sock.is_valid(), ERR_UNAVAILABLE);
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if (status != STATUS_CONNECTED) {
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return FAILED;
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}
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Error err;
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int data_to_send = p_bytes;
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const uint8_t *offset = p_data;
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int total_sent = 0;
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while (data_to_send) {
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int sent_amount = 0;
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err = _sock->send(offset, data_to_send, sent_amount);
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if (err != OK) {
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if (err != ERR_BUSY) {
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disconnect_from_host();
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return FAILED;
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}
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if (!p_block) {
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r_sent = total_sent;
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return OK;
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}
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// Block and wait for the socket to accept more data
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err = _sock->poll(NetSocket::POLL_TYPE_OUT, -1);
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if (err != OK) {
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disconnect_from_host();
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return FAILED;
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}
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} else {
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data_to_send -= sent_amount;
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offset += sent_amount;
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total_sent += sent_amount;
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}
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}
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r_sent = total_sent;
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return OK;
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}
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Error StreamPeerTCP::read(uint8_t *p_buffer, int p_bytes, int &r_received, bool p_block) {
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if (status != STATUS_CONNECTED) {
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return FAILED;
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}
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Error err;
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int to_read = p_bytes;
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int total_read = 0;
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r_received = 0;
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while (to_read) {
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int read = 0;
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err = _sock->recv(p_buffer + total_read, to_read, read);
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if (err != OK) {
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if (err != ERR_BUSY) {
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disconnect_from_host();
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return FAILED;
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}
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if (!p_block) {
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r_received = total_read;
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return OK;
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}
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err = _sock->poll(NetSocket::POLL_TYPE_IN, -1);
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if (err != OK) {
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disconnect_from_host();
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return FAILED;
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}
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} else if (read == 0) {
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disconnect_from_host();
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r_received = total_read;
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return ERR_FILE_EOF;
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} else {
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to_read -= read;
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total_read += read;
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if (!p_block) {
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r_received = total_read;
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return OK;
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}
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}
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}
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r_received = total_read;
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return OK;
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}
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void StreamPeerTCP::set_no_delay(bool p_enabled) {
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ERR_FAIL_COND(!_sock.is_valid() || !_sock->is_open());
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_sock->set_tcp_no_delay_enabled(p_enabled);
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}
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StreamPeerTCP::Status StreamPeerTCP::get_status() const {
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return status;
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}
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void StreamPeerTCP::disconnect_from_host() {
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if (_sock.is_valid() && _sock->is_open()) {
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_sock->close();
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}
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timeout = 0;
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status = STATUS_NONE;
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peer_host = IPAddress();
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peer_port = 0;
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}
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Error StreamPeerTCP::wait(NetSocket::PollType p_type, int p_timeout) {
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ERR_FAIL_COND_V(_sock.is_null() || !_sock->is_open(), ERR_UNAVAILABLE);
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return _sock->poll(p_type, p_timeout);
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}
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Error StreamPeerTCP::put_data(const uint8_t *p_data, int p_bytes) {
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int total;
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return write(p_data, p_bytes, total, true);
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}
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Error StreamPeerTCP::put_partial_data(const uint8_t *p_data, int p_bytes, int &r_sent) {
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return write(p_data, p_bytes, r_sent, false);
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}
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Error StreamPeerTCP::get_data(uint8_t *p_buffer, int p_bytes) {
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int total;
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return read(p_buffer, p_bytes, total, true);
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}
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Error StreamPeerTCP::get_partial_data(uint8_t *p_buffer, int p_bytes, int &r_received) {
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return read(p_buffer, p_bytes, r_received, false);
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}
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int StreamPeerTCP::get_available_bytes() const {
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ERR_FAIL_COND_V(!_sock.is_valid(), -1);
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return _sock->get_available_bytes();
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}
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IPAddress StreamPeerTCP::get_connected_host() const {
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return peer_host;
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}
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int StreamPeerTCP::get_connected_port() const {
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return peer_port;
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}
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int StreamPeerTCP::get_local_port() const {
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uint16_t local_port;
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_sock->get_socket_address(nullptr, &local_port);
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return local_port;
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}
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Error StreamPeerTCP::_connect(const String &p_address, int p_port) {
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IPAddress ip;
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if (p_address.is_valid_ip_address()) {
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ip = p_address;
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} else {
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ip = IP::get_singleton()->resolve_hostname(p_address);
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if (!ip.is_valid()) {
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return ERR_CANT_RESOLVE;
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}
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}
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return connect_to_host(ip, p_port);
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}
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void StreamPeerTCP::_bind_methods() {
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ClassDB::bind_method(D_METHOD("bind", "port", "host"), &StreamPeerTCP::bind, DEFVAL("*"));
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ClassDB::bind_method(D_METHOD("connect_to_host", "host", "port"), &StreamPeerTCP::_connect);
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ClassDB::bind_method(D_METHOD("poll"), &StreamPeerTCP::poll);
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ClassDB::bind_method(D_METHOD("get_status"), &StreamPeerTCP::get_status);
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ClassDB::bind_method(D_METHOD("get_connected_host"), &StreamPeerTCP::get_connected_host);
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ClassDB::bind_method(D_METHOD("get_connected_port"), &StreamPeerTCP::get_connected_port);
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ClassDB::bind_method(D_METHOD("get_local_port"), &StreamPeerTCP::get_local_port);
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ClassDB::bind_method(D_METHOD("disconnect_from_host"), &StreamPeerTCP::disconnect_from_host);
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ClassDB::bind_method(D_METHOD("set_no_delay", "enabled"), &StreamPeerTCP::set_no_delay);
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BIND_ENUM_CONSTANT(STATUS_NONE);
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BIND_ENUM_CONSTANT(STATUS_CONNECTING);
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BIND_ENUM_CONSTANT(STATUS_CONNECTED);
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BIND_ENUM_CONSTANT(STATUS_ERROR);
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}
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StreamPeerTCP::StreamPeerTCP() :
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_sock(Ref<NetSocket>(NetSocket::create())) {
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}
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StreamPeerTCP::~StreamPeerTCP() {
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disconnect_from_host();
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}
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