/**************************************************************************/
/* stream_peer_socket.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "stream_peer_socket.h"
#include "stream_peer_socket.compat.inc"
#include "core/object/class_db.h"
#include "core/os/os.h"
Error StreamPeerSocket::poll() {
if (status == STATUS_CONNECTED) {
Error err;
err = _sock->poll(NetSocket::POLL_TYPE_IN, 0);
if (err == OK) {
// FIN received
if (_sock->get_available_bytes() == 0) {
disconnect_from_host();
return OK;
}
}
// Also poll write
err = _sock->poll(NetSocket::POLL_TYPE_IN_OUT, 0);
if (err != OK && err != ERR_BUSY) {
// Got an error
disconnect_from_host();
status = STATUS_ERROR;
return err;
}
return OK;
} else if (status != STATUS_CONNECTING) {
return OK;
}
Error err = _sock->connect_to_host(peer_address);
if (err == OK) {
status = STATUS_CONNECTED;
return OK;
} else if (err == ERR_BUSY) {
// Check for connect timeout
if (OS::get_singleton()->get_ticks_msec() > timeout) {
disconnect_from_host();
status = STATUS_ERROR;
return ERR_CONNECTION_ERROR;
}
// Still trying to connect
return OK;
}
disconnect_from_host();
status = STATUS_ERROR;
return ERR_CONNECTION_ERROR;
}
Error StreamPeerSocket::write(const uint8_t *p_data, int p_bytes, int &r_sent, bool p_block) {
ERR_FAIL_COND_V(_sock.is_null(), ERR_UNAVAILABLE);
if (status != STATUS_CONNECTED) {
return FAILED;
}
Error err;
int data_to_send = p_bytes;
const uint8_t *offset = p_data;
int total_sent = 0;
while (data_to_send) {
int sent_amount = 0;
err = _sock->send(offset, data_to_send, sent_amount);
if (err != OK) {
if (err != ERR_BUSY) {
disconnect_from_host();
return FAILED;
}
if (!p_block) {
r_sent = total_sent;
return OK;
}
// Block and wait for the socket to accept more data
err = _sock->poll(NetSocket::POLL_TYPE_OUT, -1);
if (err != OK) {
disconnect_from_host();
return FAILED;
}
} else {
data_to_send -= sent_amount;
offset += sent_amount;
total_sent += sent_amount;
}
}
r_sent = total_sent;
return OK;
}
Error StreamPeerSocket::read(uint8_t *p_buffer, int p_bytes, int &r_received, bool p_block) {
if (status != STATUS_CONNECTED) {
return FAILED;
}
Error err;
int to_read = p_bytes;
int total_read = 0;
r_received = 0;
while (to_read) {
int read = 0;
err = _sock->recv(p_buffer + total_read, to_read, read);
if (err != OK) {
if (err != ERR_BUSY) {
disconnect_from_host();
return FAILED;
}
if (!p_block) {
r_received = total_read;
return OK;
}
err = _sock->poll(NetSocket::POLL_TYPE_IN, -1);
if (err != OK) {
disconnect_from_host();
return FAILED;
}
} else if (read == 0) {
disconnect_from_host();
r_received = total_read;
return ERR_FILE_EOF;
} else {
to_read -= read;
total_read += read;
if (!p_block) {
r_received = total_read;
return OK;
}
}
}
r_received = total_read;
return OK;
}
StreamPeerSocket::Status StreamPeerSocket::get_status() const {
return status;
}
void StreamPeerSocket::disconnect_from_host() {
if (_sock.is_valid() && _sock->is_open()) {
_sock->close();
}
timeout = 0;
status = STATUS_NONE;
peer_address = NetSocket::Address();
}
Error StreamPeerSocket::wait(NetSocket::PollType p_type, int p_timeout) {
ERR_FAIL_COND_V(_sock.is_null() || !_sock->is_open(), ERR_UNAVAILABLE);
return _sock->poll(p_type, p_timeout);
}
Error StreamPeerSocket::put_data(const uint8_t *p_data, int p_bytes) {
int total;
return write(p_data, p_bytes, total, true);
}
Error StreamPeerSocket::put_partial_data(const uint8_t *p_data, int p_bytes, int &r_sent) {
return write(p_data, p_bytes, r_sent, false);
}
Error StreamPeerSocket::get_data(uint8_t *p_buffer, int p_bytes) {
int total;
return read(p_buffer, p_bytes, total, true);
}
Error StreamPeerSocket::get_partial_data(uint8_t *p_buffer, int p_bytes, int &r_received) {
return read(p_buffer, p_bytes, r_received, false);
}
int StreamPeerSocket::get_available_bytes() const {
ERR_FAIL_COND_V(_sock.is_null(), -1);
return _sock->get_available_bytes();
}
void StreamPeerSocket::_bind_methods() {
ClassDB::bind_method(D_METHOD("poll"), &StreamPeerSocket::poll);
ClassDB::bind_method(D_METHOD("get_status"), &StreamPeerSocket::get_status);
ClassDB::bind_method(D_METHOD("disconnect_from_host"), &StreamPeerSocket::disconnect_from_host);
BIND_ENUM_CONSTANT(STATUS_NONE);
BIND_ENUM_CONSTANT(STATUS_CONNECTING);
BIND_ENUM_CONSTANT(STATUS_CONNECTED);
BIND_ENUM_CONSTANT(STATUS_ERROR);
}
StreamPeerSocket::StreamPeerSocket() :
_sock(NetSocket::create()) {
}
StreamPeerSocket::~StreamPeerSocket() {
disconnect_from_host();
}