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![Yorick de Wid](/assets/img/avatar_default.png)
If the `StreamPeerTCP` is polled and the TCP connection is `STATUS_CONNECTED` it should return after polling netsocket. Without `return` poll keeps calling `_sock->connect_to_host` and `connect()`.
340 lines
9.9 KiB
C++
340 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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return OK;
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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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