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godot/platform/windows/stream_peer_winsock.cpp

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/*************************************************************************/
/* stream_peer_winsock.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 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. */
/*************************************************************************/
#ifdef WINDOWS_ENABLED
#include "stream_peer_winsock.h"
#include <winsock2.h>
int winsock_refcount = 0;
static void set_addr_in(struct sockaddr_in& their_addr, const IP_Address& p_host, uint16_t p_port) {
their_addr.sin_family = AF_INET; // host byte order
their_addr.sin_port = htons(p_port); // short, network byte order
their_addr.sin_addr = *((struct in_addr*)&p_host.host);
memset(&(their_addr.sin_zero), '\0', 8);
};
StreamPeerTCP* StreamPeerWinsock::_create() {
return memnew(StreamPeerWinsock);
};
void StreamPeerWinsock::make_default() {
StreamPeerTCP::_create = StreamPeerWinsock::_create;
if (winsock_refcount == 0) {
WSADATA data;
WSAStartup(MAKEWORD(2,2), &data);
};
++winsock_refcount;
};
void StreamPeerWinsock::cleanup() {
--winsock_refcount;
if (winsock_refcount == 0) {
WSACleanup();
};
};
Error StreamPeerWinsock::_block(int p_sockfd, bool p_read, bool p_write) const {
fd_set read, write;
FD_ZERO(&read);
FD_ZERO(&write);
if (p_read)
FD_SET(p_sockfd, &read);
if (p_write)
FD_SET(p_sockfd, &write);
int ret = select(p_sockfd + 1, &read, &write, NULL, NULL); // block forever
return ret < 0 ? FAILED : OK;
};
Error StreamPeerWinsock::_poll_connection(bool p_block) const {
ERR_FAIL_COND_V(status != STATUS_CONNECTING || sockfd == INVALID_SOCKET, FAILED);
if (p_block) {
_block(sockfd, false, true);
};
struct sockaddr_in their_addr;
set_addr_in(their_addr, peer_host, peer_port);
if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == SOCKET_ERROR) {
int err = WSAGetLastError();
if (err == WSAEISCONN) {
status = STATUS_CONNECTED;
return OK;
};
return OK;
} else {
status = STATUS_CONNECTED;
return OK;
};
return OK;
};
Error StreamPeerWinsock::write(const uint8_t* p_data,int p_bytes, int &r_sent, bool p_block) {
if (status == STATUS_NONE || status == STATUS_ERROR) {
return FAILED;
};
if (status != STATUS_CONNECTED) {
if (_poll_connection(p_block) != OK) {
return FAILED;
};
if (status != STATUS_CONNECTED) {
r_sent = 0;
return OK;
};
};
int data_to_send = p_bytes;
const uint8_t *offset = p_data;
if (sockfd == -1) return FAILED;
errno = 0;
int total_sent = 0;
while (data_to_send) {
int sent_amount = send(sockfd, (const char*)offset, data_to_send, 0);
//printf("Sent TCP data of %d bytes, errno %d\n", sent_amount, errno);
if (sent_amount == -1) {
if (WSAGetLastError() != WSAEWOULDBLOCK) {
perror("shit?");
disconnect();
ERR_PRINT("Server disconnected!\n");
return FAILED;
};
if (!p_block) {
r_sent = total_sent;
return OK;
};
_block(sockfd, false, true);
} else {
data_to_send -= sent_amount;
offset += sent_amount;
total_sent += sent_amount;
};
}
r_sent = total_sent;
return OK;
};
Error StreamPeerWinsock::read(uint8_t* p_buffer, int p_bytes,int &r_received, bool p_block) {
if (!is_connected()) {
return FAILED;
};
if (status != STATUS_CONNECTED) {
if (_poll_connection(p_block) != OK) {
return FAILED;
};
if (status != STATUS_CONNECTED) {
r_received = 0;
return OK;
};
};
int to_read = p_bytes;
int total_read = 0;
errno = 0;
while (to_read) {
int read = recv(sockfd, (char*)p_buffer + total_read, to_read, 0);
if (read == -1) {
if (WSAGetLastError() != WSAEWOULDBLOCK) {
perror("shit?");
disconnect();
ERR_PRINT("Server disconnected!\n");
return FAILED;
};
if (!p_block) {
r_received = total_read;
return OK;
};
_block(sockfd, true, false);
} else if (read == 0) {
disconnect();
return ERR_FILE_EOF;
} else {
to_read -= read;
total_read += read;
};
};
r_received = total_read;
return OK;
};
Error StreamPeerWinsock::put_data(const uint8_t* p_data,int p_bytes) {
int total;
return write(p_data, p_bytes, total, true);
};
Error StreamPeerWinsock::put_partial_data(const uint8_t* p_data,int p_bytes, int &r_sent) {
return write(p_data, p_bytes, r_sent, false);
};
Error StreamPeerWinsock::get_data(uint8_t* p_buffer, int p_bytes) {
int total;
return read(p_buffer, p_bytes, total, true);
};
Error StreamPeerWinsock::get_partial_data(uint8_t* p_buffer, int p_bytes,int &r_received) {
return read(p_buffer, p_bytes, r_received, false);
};
StreamPeerTCP::Status StreamPeerWinsock::get_status() const {
if (status == STATUS_CONNECTING) {
_poll_connection(false);
};
return status;
};
bool StreamPeerWinsock::is_connected() const {
if (status == STATUS_NONE || status == STATUS_ERROR) {
return false;
};
if (status != STATUS_CONNECTED) {
return true;
};
return (sockfd!=INVALID_SOCKET);
};
void StreamPeerWinsock::disconnect() {
if (sockfd != INVALID_SOCKET)
closesocket(sockfd);
sockfd=INVALID_SOCKET;
status = STATUS_NONE;
peer_host = IP_Address();
peer_port = 0;
};
void StreamPeerWinsock::set_socket(int p_sockfd, IP_Address p_host, int p_port) {
sockfd = p_sockfd;
status = STATUS_CONNECTING;
peer_host = p_host;
peer_port = p_port;
};
Error StreamPeerWinsock::connect(const IP_Address& p_host, uint16_t p_port) {
ERR_FAIL_COND_V( p_host.host == 0, ERR_INVALID_PARAMETER);
if ((sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == INVALID_SOCKET) {
ERR_PRINT("Socket creation failed!");
disconnect();
//perror("socket");
return FAILED;
};
unsigned long par = 1;
if (ioctlsocket(sockfd, FIONBIO, &par)) {
perror("setting non-block mode");
disconnect();
return FAILED;
};
struct sockaddr_in their_addr;
set_addr_in(their_addr, p_host, p_port);
if (::connect(sockfd, (struct sockaddr *)&their_addr,sizeof(struct sockaddr)) == SOCKET_ERROR) {
if (WSAGetLastError() != WSAEWOULDBLOCK) {
ERR_PRINT("Connection to remote host failed!");
disconnect();
return FAILED;
};
status = STATUS_CONNECTING;
} else {
status = STATUS_CONNECTED;
};
peer_host = p_host;
peer_port = p_port;
return OK;
};
void StreamPeerWinsock::set_nodelay(bool p_enabled) {
ERR_FAIL_COND(!is_connected());
int flag=p_enabled?1:0;
setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (char*)&flag, sizeof(int));
}
IP_Address StreamPeerWinsock::get_connected_host() const {
return peer_host;
};
uint16_t StreamPeerWinsock::get_connected_port() const {
return peer_port;
};
StreamPeerWinsock::StreamPeerWinsock() {
sockfd = INVALID_SOCKET;
status = STATUS_NONE;
peer_port = 0;
};
StreamPeerWinsock::~StreamPeerWinsock() {
disconnect();
};
#endif
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