9e303ef71c
Both client and server are supported on native builds (as usual). SSL server is still not supported, but will soon be possible with this new library. The API stays the same, we just need to work out potential issues due to this big library switch.
367 lines
8.9 KiB
C++
367 lines
8.9 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) 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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#include "stream_peer_tcp.h"
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Error StreamPeerTCP::_poll_connection() {
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ERR_FAIL_COND_V(status != STATUS_CONNECTING || !_sock.is_valid() || !_sock->is_open(), FAILED);
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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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// 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, IP_Address 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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status = STATUS_CONNECTING;
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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::connect_to_host(const IP_Address &p_host, uint16_t p_port) {
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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(!p_host.is_valid(), ERR_INVALID_PARAMETER);
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Error err;
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IP::Type ip_type = p_host.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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err = _sock->open(NetSocket::TYPE_TCP, ip_type);
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ERR_FAIL_COND_V(err != OK, FAILED);
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_sock->set_blocking_enabled(false);
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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_NONE || status == STATUS_ERROR) {
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return FAILED;
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}
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if (status != STATUS_CONNECTED) {
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if (_poll_connection() != OK) {
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return FAILED;
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}
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if (status != STATUS_CONNECTED) {
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r_sent = 0;
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return OK;
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}
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}
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if (!_sock->is_open())
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return FAILED;
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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 (!is_connected_to_host()) {
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return FAILED;
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}
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if (status == STATUS_CONNECTING) {
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if (_poll_connection() != OK) {
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return FAILED;
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}
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if (status != STATUS_CONNECTED) {
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r_received = 0;
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return OK;
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}
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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(!is_connected_to_host());
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_sock->set_tcp_no_delay_enabled(p_enabled);
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}
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bool StreamPeerTCP::is_connected_to_host() const {
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if (status == STATUS_NONE || status == STATUS_ERROR) {
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return false;
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}
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if (status != STATUS_CONNECTED) {
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return true;
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}
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return _sock.is_valid() && _sock->is_open();
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}
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StreamPeerTCP::Status StreamPeerTCP::get_status() {
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if (status == STATUS_CONNECTING) {
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_poll_connection();
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} else 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 status;
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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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}
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}
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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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status = STATUS_NONE;
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peer_host = IP_Address();
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peer_port = 0;
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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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IP_Address StreamPeerTCP::get_connected_host() const {
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return peer_host;
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}
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uint16_t StreamPeerTCP::get_connected_port() const {
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return peer_port;
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}
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Error StreamPeerTCP::_connect(const String &p_address, int p_port) {
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IP_Address 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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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("connect_to_host", "host", "port"), &StreamPeerTCP::_connect);
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ClassDB::bind_method(D_METHOD("is_connected_to_host"), &StreamPeerTCP::is_connected_to_host);
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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("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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status(STATUS_NONE),
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peer_port(0) {
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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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