GODOT IS OPEN SOURCE

drivers/unix/tcp_server_posix.cpp

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+/*************************************************************************/
+/*  tcp_server_posix.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* 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 "tcp_server_posix.h"
+#include "stream_peer_tcp_posix.h"
+
+#ifdef UNIX_ENABLED
+
+#include <poll.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <netdb.h>
+#include <sys/types.h>
+#ifndef NO_FCNTL
+#include <sys/fcntl.h>
+#else
+#include <sys/ioctl.h>
+#endif
+#ifdef JAVASCRIPT_ENABLED
+#include <arpa/inet.h>
+#endif
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <assert.h>
+TCP_Server* TCPServerPosix::_create() {
+
+	return memnew(TCPServerPosix);
+};
+
+void TCPServerPosix::make_default() {
+
+	TCP_Server::_create = TCPServerPosix::_create;
+};
+
+Error TCPServerPosix::listen(uint16_t p_port,const List<String> *p_accepted_hosts) {
+
+	printf("********* listening on port %i\n", p_port);
+	int sockfd;
+	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+	ERR_FAIL_COND_V(sockfd == -1, FAILED);
+#ifndef NO_FCNTL
+	fcntl(sockfd, F_SETFL, O_NONBLOCK);
+#else
+	int bval = 1;
+	ioctl(sockfd, FIONBIO, &bval);
+#endif
+
+	int reuse=1;
+	if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse, sizeof(reuse)) < 0) {
+
+		printf("REUSEADDR failed!");
+	}
+
+	struct sockaddr_in my_addr;
+	my_addr.sin_family = AF_INET;         // host byte order
+	my_addr.sin_port = htons(p_port);     // short, network byte order
+	my_addr.sin_addr.s_addr = INADDR_ANY; // automatically fill with my IP TODO: use p_accepted_hosts
+	memset(my_addr.sin_zero, '\0', sizeof my_addr.sin_zero);
+
+	if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof my_addr) != -1) {
+
+		if (::listen(sockfd, 1) == -1) {
+
+			close(sockfd);
+			ERR_FAIL_V(FAILED);
+		};
+	};
+
+	if (listen_sockfd != -1) {
+
+		printf("FAILED\n");
+		stop();
+	};
+
+	listen_sockfd = sockfd;
+
+	printf("OK! %i\n", listen_sockfd);
+	return OK;
+};
+
+bool TCPServerPosix::is_connection_available() const {
+
+	if (listen_sockfd == -1) {
+		return false;
+	};
+
+	struct pollfd pfd;
+	pfd.fd = listen_sockfd;
+	pfd.events = POLLIN;
+	pfd.revents = 0;
+
+	int ret = poll(&pfd, 1, 0);
+	ERR_FAIL_COND_V(ret < 0, FAILED);
+
+	if (ret && (pfd.revents & POLLIN)) {
+		printf("has connection!\n");
+		return true;
+	};
+
+	return false;
+};
+
+Ref<StreamPeerTCP> TCPServerPosix::take_connection() {
+
+	if (!is_connection_available()) {
+		return Ref<StreamPeerTCP>();
+	};
+
+	struct sockaddr_in their_addr;
+	socklen_t sin_size = sizeof(their_addr);
+	int fd = accept(listen_sockfd, (struct sockaddr *)&their_addr, &sin_size);
+	ERR_FAIL_COND_V(fd == -1, Ref<StreamPeerTCP>());
+#ifndef NO_FCNTL
+	fcntl(fd, F_SETFL, O_NONBLOCK);
+#else
+	int bval = 1;
+	ioctl(fd, FIONBIO, &bval);
+#endif
+
+	Ref<StreamPeerTCPPosix> conn = memnew(StreamPeerTCPPosix);
+	IP_Address ip;
+	ip.host = (uint32_t)their_addr.sin_addr.s_addr;
+	conn->set_socket(fd, ip, ntohs(their_addr.sin_port));
+
+	return conn;
+};
+
+void TCPServerPosix::stop() {
+
+	if (listen_sockfd != -1) {
+		print_line("CLOSING CONNECTION");
+		int ret = close(listen_sockfd);
+		ERR_FAIL_COND(ret!=0);
+	};
+
+	listen_sockfd = -1;
+};
+
+
+TCPServerPosix::TCPServerPosix() {
+
+	listen_sockfd = -1;
+};
+
+TCPServerPosix::~TCPServerPosix() {
+
+	stop();
+};
+#endif