2018-09-01 18:15:42 +00:00
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/*************************************************************************/
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/* net_socket_posix.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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2021-01-01 19:13:46 +00:00
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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2018-09-01 18:15:42 +00:00
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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 "net_socket_posix.h"
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2019-10-01 00:15:50 +00:00
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#ifndef UNIX_SOCKET_UNAVAILABLE
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2018-09-01 18:15:42 +00:00
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#if defined(UNIX_ENABLED)
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#include <errno.h>
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#include <netdb.h>
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#include <poll.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifndef NO_FCNTL
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#include <fcntl.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#include <netinet/in.h>
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#include <sys/socket.h>
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#ifdef JAVASCRIPT_ENABLED
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#include <arpa/inet.h>
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#endif
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#include <netinet/tcp.h>
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2019-06-20 09:36:32 +00:00
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// BSD calls this flag IPV6_JOIN_GROUP
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#if !defined(IPV6_ADD_MEMBERSHIP) && defined(IPV6_JOIN_GROUP)
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#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
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#endif
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#if !defined(IPV6_DROP_MEMBERSHIP) && defined(IPV6_LEAVE_GROUP)
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#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
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#endif
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2018-09-01 18:15:42 +00:00
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// Some custom defines to minimize ifdefs
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#define SOCK_EMPTY -1
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#define SOCK_BUF(x) x
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#define SOCK_CBUF(x) x
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#define SOCK_IOCTL ioctl
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#define SOCK_CLOSE ::close
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2019-10-24 18:13:48 +00:00
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#define SOCK_CONNECT(p_sock, p_addr, p_addr_len) ::connect(p_sock, p_addr, p_addr_len)
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2018-09-01 18:15:42 +00:00
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/* Windows */
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#elif defined(WINDOWS_ENABLED)
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#include <winsock2.h>
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#include <ws2tcpip.h>
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2018-09-22 00:04:29 +00:00
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#include <mswsock.h>
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2018-09-01 18:15:42 +00:00
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// Some custom defines to minimize ifdefs
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#define SOCK_EMPTY INVALID_SOCKET
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#define SOCK_BUF(x) (char *)(x)
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#define SOCK_CBUF(x) (const char *)(x)
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#define SOCK_IOCTL ioctlsocket
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#define SOCK_CLOSE closesocket
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2019-10-24 18:13:48 +00:00
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// connect is broken on windows under certain conditions, reasons unknown:
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// See https://github.com/godotengine/webrtc-native/issues/6
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#define SOCK_CONNECT(p_sock, p_addr, p_addr_len) ::WSAConnect(p_sock, p_addr, p_addr_len, NULL, NULL, NULL, NULL)
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2018-09-01 18:15:42 +00:00
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2018-09-22 00:04:29 +00:00
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// Workaround missing flag in MinGW
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#if defined(__MINGW32__) && !defined(SIO_UDP_NETRESET)
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#define SIO_UDP_NETRESET _WSAIOW(IOC_VENDOR, 15)
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#endif
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2018-09-01 18:15:42 +00:00
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#endif
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2018-09-27 17:39:23 +00:00
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size_t NetSocketPosix::_set_addr_storage(struct sockaddr_storage *p_addr, const IP_Address &p_ip, uint16_t p_port, IP::Type p_ip_type) {
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2018-09-01 18:15:42 +00:00
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memset(p_addr, 0, sizeof(struct sockaddr_storage));
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if (p_ip_type == IP::TYPE_IPV6 || p_ip_type == IP::TYPE_ANY) { // IPv6 socket
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// IPv6 only socket with IPv4 address
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ERR_FAIL_COND_V(!p_ip.is_wildcard() && p_ip_type == IP::TYPE_IPV6 && p_ip.is_ipv4(), 0);
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
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addr6->sin6_family = AF_INET6;
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addr6->sin6_port = htons(p_port);
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if (p_ip.is_valid()) {
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copymem(&addr6->sin6_addr.s6_addr, p_ip.get_ipv6(), 16);
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} else {
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addr6->sin6_addr = in6addr_any;
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}
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return sizeof(sockaddr_in6);
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} else { // IPv4 socket
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// IPv4 socket with IPv6 address
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2018-11-18 13:54:40 +00:00
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ERR_FAIL_COND_V(!p_ip.is_wildcard() && !p_ip.is_ipv4(), 0);
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2018-09-01 18:15:42 +00:00
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struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
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addr4->sin_family = AF_INET;
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addr4->sin_port = htons(p_port); // short, network byte order
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if (p_ip.is_valid()) {
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copymem(&addr4->sin_addr.s_addr, p_ip.get_ipv4(), 4);
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} else {
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addr4->sin_addr.s_addr = INADDR_ANY;
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}
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return sizeof(sockaddr_in);
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}
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}
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2018-09-27 17:39:23 +00:00
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void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IP_Address &r_ip, uint16_t &r_port) {
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2018-09-01 18:15:42 +00:00
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if (p_addr->ss_family == AF_INET) {
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struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
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r_ip.set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr));
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r_port = ntohs(addr4->sin_port);
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} else if (p_addr->ss_family == AF_INET6) {
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struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
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r_ip.set_ipv6(addr6->sin6_addr.s6_addr);
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r_port = ntohs(addr6->sin6_port);
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};
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}
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NetSocket *NetSocketPosix::_create_func() {
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return memnew(NetSocketPosix);
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}
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void NetSocketPosix::make_default() {
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2018-09-13 13:47:00 +00:00
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#if defined(WINDOWS_ENABLED)
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if (_create == NULL) {
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WSADATA data;
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WSAStartup(MAKEWORD(2, 2), &data);
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}
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#endif
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2018-09-01 18:15:42 +00:00
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_create = _create_func;
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}
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2018-09-13 13:47:00 +00:00
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void NetSocketPosix::cleanup() {
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#if defined(WINDOWS_ENABLED)
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if (_create != NULL) {
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WSACleanup();
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}
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_create = NULL;
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#endif
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}
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2018-12-08 20:07:33 +00:00
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NetSocketPosix::NetSocketPosix() :
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_sock(SOCK_EMPTY),
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_ip_type(IP::TYPE_NONE),
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_is_stream(false) {
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2018-09-01 18:15:42 +00:00
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}
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NetSocketPosix::~NetSocketPosix() {
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close();
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}
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2019-04-02 11:46:35 +00:00
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// Silent a warning reported in #27594
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wlogical-op"
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#endif
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2019-12-01 07:57:34 +00:00
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NetSocketPosix::NetError NetSocketPosix::_get_socket_error() const {
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2018-09-01 18:15:42 +00:00
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#if defined(WINDOWS_ENABLED)
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int err = WSAGetLastError();
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if (err == WSAEISCONN)
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return ERR_NET_IS_CONNECTED;
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2018-09-13 13:47:00 +00:00
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if (err == WSAEINPROGRESS || err == WSAEALREADY)
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2018-09-01 18:15:42 +00:00
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return ERR_NET_IN_PROGRESS;
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if (err == WSAEWOULDBLOCK)
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return ERR_NET_WOULD_BLOCK;
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2019-12-01 07:57:34 +00:00
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print_verbose("Socket error: " + itos(err));
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2018-09-01 18:15:42 +00:00
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return ERR_NET_OTHER;
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#else
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if (errno == EISCONN)
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return ERR_NET_IS_CONNECTED;
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if (errno == EINPROGRESS || errno == EALREADY)
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return ERR_NET_IN_PROGRESS;
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if (errno == EAGAIN || errno == EWOULDBLOCK)
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return ERR_NET_WOULD_BLOCK;
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2019-12-01 07:57:34 +00:00
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print_verbose("Socket error: " + itos(errno));
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2018-09-01 18:15:42 +00:00
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return ERR_NET_OTHER;
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#endif
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}
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2019-04-02 11:46:35 +00:00
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#if defined(__GNUC__) && !defined(__clang__)
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#pragma GCC diagnostic pop
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#endif
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2019-07-10 09:54:12 +00:00
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bool NetSocketPosix::_can_use_ip(const IP_Address &p_ip, const bool p_for_bind) const {
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2018-09-01 18:15:42 +00:00
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if (p_for_bind && !(p_ip.is_valid() || p_ip.is_wildcard())) {
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return false;
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} else if (!p_for_bind && !p_ip.is_valid()) {
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return false;
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}
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// Check if socket support this IP type.
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IP::Type type = p_ip.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
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2019-06-26 13:08:25 +00:00
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return !(_ip_type != IP::TYPE_ANY && !p_ip.is_wildcard() && _ip_type != type);
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2018-09-01 18:15:42 +00:00
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}
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2019-06-20 09:36:32 +00:00
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_FORCE_INLINE_ Error NetSocketPosix::_change_multicast_group(IP_Address p_ip, String p_if_name, bool p_add) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!_can_use_ip(p_ip, false), ERR_INVALID_PARAMETER);
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// Need to force level and af_family to IP(v4) when using dual stacking and provided multicast group is IPv4
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IP::Type type = _ip_type == IP::TYPE_ANY && p_ip.is_ipv4() ? IP::TYPE_IPV4 : _ip_type;
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// This needs to be the proper level for the multicast group, no matter if the socket is dual stacking.
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int level = type == IP::TYPE_IPV4 ? IPPROTO_IP : IPPROTO_IPV6;
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int ret = -1;
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IP_Address if_ip;
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uint32_t if_v6id = 0;
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Map<String, IP::Interface_Info> if_info;
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IP::get_singleton()->get_local_interfaces(&if_info);
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for (Map<String, IP::Interface_Info>::Element *E = if_info.front(); E; E = E->next()) {
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IP::Interface_Info &c = E->get();
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if (c.name != p_if_name)
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continue;
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if_v6id = (uint32_t)c.index.to_int64();
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if (type == IP::TYPE_IPV6)
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break; // IPv6 uses index.
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for (List<IP_Address>::Element *F = c.ip_addresses.front(); F; F = F->next()) {
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if (!F->get().is_ipv4())
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continue; // Wrong IP type
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if_ip = F->get();
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break;
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}
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break;
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}
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if (level == IPPROTO_IP) {
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ERR_FAIL_COND_V(!if_ip.is_valid(), ERR_INVALID_PARAMETER);
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struct ip_mreq greq;
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int sock_opt = p_add ? IP_ADD_MEMBERSHIP : IP_DROP_MEMBERSHIP;
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copymem(&greq.imr_multiaddr, p_ip.get_ipv4(), 4);
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copymem(&greq.imr_interface, if_ip.get_ipv4(), 4);
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ret = setsockopt(_sock, level, sock_opt, (const char *)&greq, sizeof(greq));
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} else {
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struct ipv6_mreq greq;
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int sock_opt = p_add ? IPV6_ADD_MEMBERSHIP : IPV6_DROP_MEMBERSHIP;
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copymem(&greq.ipv6mr_multiaddr, p_ip.get_ipv6(), 16);
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greq.ipv6mr_interface = if_v6id;
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ret = setsockopt(_sock, level, sock_opt, (const char *)&greq, sizeof(greq));
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}
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ERR_FAIL_COND_V(ret != 0, FAILED);
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return OK;
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}
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2018-09-01 18:15:42 +00:00
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void NetSocketPosix::_set_socket(SOCKET_TYPE p_sock, IP::Type p_ip_type, bool p_is_stream) {
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_sock = p_sock;
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_ip_type = p_ip_type;
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_is_stream = p_is_stream;
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2019-10-07 07:45:21 +00:00
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// Disable descriptor sharing with subprocesses.
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_set_close_exec_enabled(true);
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}
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void NetSocketPosix::_set_close_exec_enabled(bool p_enabled) {
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#ifndef WINDOWS_ENABLED
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// Enable close on exec to avoid sharing with subprocesses. Off by default on Windows.
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#if defined(NO_FCNTL)
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unsigned long par = p_enabled ? 1 : 0;
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SOCK_IOCTL(_sock, FIOCLEX, &par);
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#else
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int opts = fcntl(_sock, F_GETFD);
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fcntl(_sock, F_SETFD, opts | FD_CLOEXEC);
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#endif
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#endif
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2018-09-01 18:15:42 +00:00
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}
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Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
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ERR_FAIL_COND_V(is_open(), ERR_ALREADY_IN_USE);
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ERR_FAIL_COND_V(ip_type > IP::TYPE_ANY || ip_type < IP::TYPE_NONE, ERR_INVALID_PARAMETER);
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|
|
#if defined(__OpenBSD__)
|
|
|
|
// OpenBSD does not support dual stacking, fallback to IPv4 only.
|
|
|
|
if (ip_type == IP::TYPE_ANY)
|
|
|
|
ip_type = IP::TYPE_IPV4;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
int family = ip_type == IP::TYPE_IPV4 ? AF_INET : AF_INET6;
|
|
|
|
int protocol = p_sock_type == TYPE_TCP ? IPPROTO_TCP : IPPROTO_UDP;
|
|
|
|
int type = p_sock_type == TYPE_TCP ? SOCK_STREAM : SOCK_DGRAM;
|
|
|
|
_sock = socket(family, type, protocol);
|
|
|
|
|
|
|
|
if (_sock == SOCK_EMPTY && ip_type == IP::TYPE_ANY) {
|
|
|
|
// Careful here, changing the referenced parameter so the caller knows that we are using an IPv4 socket
|
|
|
|
// in place of a dual stack one, and further calls to _set_sock_addr will work as expected.
|
|
|
|
ip_type = IP::TYPE_IPV4;
|
|
|
|
family = AF_INET;
|
|
|
|
_sock = socket(family, type, protocol);
|
|
|
|
}
|
|
|
|
|
|
|
|
ERR_FAIL_COND_V(_sock == SOCK_EMPTY, FAILED);
|
|
|
|
_ip_type = ip_type;
|
|
|
|
|
|
|
|
if (family == AF_INET6) {
|
|
|
|
// Select IPv4 over IPv6 mapping
|
|
|
|
set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
|
|
|
|
}
|
|
|
|
|
2019-11-25 16:36:09 +00:00
|
|
|
if (protocol == IPPROTO_UDP) {
|
|
|
|
// Make sure to disable broadcasting for UDP sockets.
|
|
|
|
// Depending on the OS, this option might or might not be enabled by default. Let's normalize it.
|
|
|
|
set_broadcasting_enabled(false);
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
_is_stream = p_sock_type == TYPE_TCP;
|
2018-09-22 00:04:29 +00:00
|
|
|
|
2019-10-07 07:45:21 +00:00
|
|
|
// Disable descriptor sharing with subprocesses.
|
|
|
|
_set_close_exec_enabled(true);
|
|
|
|
|
2018-09-22 00:04:29 +00:00
|
|
|
#if defined(WINDOWS_ENABLED)
|
|
|
|
if (!_is_stream) {
|
|
|
|
// Disable windows feature/bug reporting WSAECONNRESET/WSAENETRESET when
|
|
|
|
// recv/recvfrom and an ICMP reply was received from a previous send/sendto.
|
|
|
|
unsigned long disable = 0;
|
|
|
|
if (ioctlsocket(_sock, SIO_UDP_CONNRESET, &disable) == SOCKET_ERROR) {
|
2020-11-20 08:52:31 +00:00
|
|
|
print_verbose("Unable to turn off UDP WSAECONNRESET behavior on Windows");
|
2018-09-22 00:04:29 +00:00
|
|
|
}
|
|
|
|
if (ioctlsocket(_sock, SIO_UDP_NETRESET, &disable) == SOCKET_ERROR) {
|
|
|
|
// This feature seems not to be supported on wine.
|
2020-11-20 08:52:31 +00:00
|
|
|
print_verbose("Unable to turn off UDP WSAENETRESET behavior on Windows");
|
2018-09-22 00:04:29 +00:00
|
|
|
}
|
|
|
|
}
|
2019-06-28 14:58:43 +00:00
|
|
|
#endif
|
|
|
|
#if defined(SO_NOSIGPIPE)
|
|
|
|
// Disable SIGPIPE (should only be relevant to stream sockets, but seems to affect UDP too on iOS)
|
|
|
|
int par = 1;
|
|
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_NOSIGPIPE, SOCK_CBUF(&par), sizeof(int)) != 0) {
|
|
|
|
print_verbose("Unable to turn off SIGPIPE on socket");
|
|
|
|
}
|
2018-09-22 00:04:29 +00:00
|
|
|
#endif
|
2018-09-01 18:15:42 +00:00
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
void NetSocketPosix::close() {
|
|
|
|
|
|
|
|
if (_sock != SOCK_EMPTY)
|
|
|
|
SOCK_CLOSE(_sock);
|
|
|
|
|
|
|
|
_sock = SOCK_EMPTY;
|
|
|
|
_ip_type = IP::TYPE_NONE;
|
|
|
|
_is_stream = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::bind(IP_Address p_addr, uint16_t p_port) {
|
|
|
|
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
ERR_FAIL_COND_V(!_can_use_ip(p_addr, true), ERR_INVALID_PARAMETER);
|
|
|
|
|
|
|
|
sockaddr_storage addr;
|
|
|
|
size_t addr_size = _set_addr_storage(&addr, p_addr, p_port, _ip_type);
|
|
|
|
|
2019-06-15 10:11:30 +00:00
|
|
|
if (::bind(_sock, (struct sockaddr *)&addr, addr_size) != 0) {
|
2019-12-01 07:57:34 +00:00
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Failed to bind socket.");
|
2018-09-01 18:15:42 +00:00
|
|
|
close();
|
2019-12-01 07:57:34 +00:00
|
|
|
return ERR_UNAVAILABLE;
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::listen(int p_max_pending) {
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
2019-06-15 10:11:30 +00:00
|
|
|
if (::listen(_sock, p_max_pending) != 0) {
|
2019-12-01 07:57:34 +00:00
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Failed to listen from socket.");
|
2018-09-01 18:15:42 +00:00
|
|
|
close();
|
2019-12-01 07:57:34 +00:00
|
|
|
return FAILED;
|
2018-09-01 18:15:42 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::connect_to_host(IP_Address p_host, uint16_t p_port) {
|
|
|
|
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
ERR_FAIL_COND_V(!_can_use_ip(p_host, false), ERR_INVALID_PARAMETER);
|
|
|
|
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
size_t addr_size = _set_addr_storage(&addr, p_host, p_port, _ip_type);
|
|
|
|
|
2019-10-24 18:13:48 +00:00
|
|
|
if (SOCK_CONNECT(_sock, (struct sockaddr *)&addr, addr_size) != 0) {
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
NetError err = _get_socket_error();
|
|
|
|
|
|
|
|
switch (err) {
|
|
|
|
// We are already connected
|
|
|
|
case ERR_NET_IS_CONNECTED:
|
|
|
|
return OK;
|
|
|
|
// Still waiting to connect, try again in a while
|
|
|
|
case ERR_NET_WOULD_BLOCK:
|
|
|
|
case ERR_NET_IN_PROGRESS:
|
|
|
|
return ERR_BUSY;
|
|
|
|
default:
|
2019-12-01 07:57:34 +00:00
|
|
|
print_verbose("Connection to remote host failed!");
|
2018-09-01 18:15:42 +00:00
|
|
|
close();
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
2018-09-21 19:49:50 +00:00
|
|
|
Error NetSocketPosix::poll(PollType p_type, int p_timeout) const {
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
2018-09-21 19:49:50 +00:00
|
|
|
#if defined(WINDOWS_ENABLED)
|
|
|
|
bool ready = false;
|
|
|
|
fd_set rd, wr, ex;
|
|
|
|
fd_set *rdp = NULL;
|
|
|
|
fd_set *wrp = NULL;
|
|
|
|
FD_ZERO(&rd);
|
|
|
|
FD_ZERO(&wr);
|
|
|
|
FD_ZERO(&ex);
|
|
|
|
FD_SET(_sock, &ex);
|
2021-04-26 05:23:39 +00:00
|
|
|
struct timeval timeout = { p_timeout / 1000, (p_timeout % 1000) * 1000 };
|
2018-09-21 19:49:50 +00:00
|
|
|
// For blocking operation, pass NULL timeout pointer to select.
|
|
|
|
struct timeval *tp = NULL;
|
|
|
|
if (p_timeout >= 0) {
|
|
|
|
// If timeout is non-negative, we want to specify the timeout instead.
|
|
|
|
tp = &timeout;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (p_type) {
|
|
|
|
case POLL_TYPE_IN:
|
|
|
|
FD_SET(_sock, &rd);
|
|
|
|
rdp = &rd;
|
|
|
|
break;
|
|
|
|
case POLL_TYPE_OUT:
|
|
|
|
FD_SET(_sock, &wr);
|
|
|
|
wrp = ≀
|
|
|
|
break;
|
|
|
|
case POLL_TYPE_IN_OUT:
|
|
|
|
FD_SET(_sock, &rd);
|
|
|
|
FD_SET(_sock, &wr);
|
|
|
|
rdp = &rd;
|
|
|
|
wrp = ≀
|
|
|
|
}
|
|
|
|
int ret = select(1, rdp, wrp, &ex, tp);
|
|
|
|
|
2019-12-01 07:57:34 +00:00
|
|
|
if (ret == SOCKET_ERROR) {
|
|
|
|
return FAILED;
|
|
|
|
}
|
2018-09-21 19:49:50 +00:00
|
|
|
|
|
|
|
if (ret == 0)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
2019-12-01 07:57:34 +00:00
|
|
|
if (FD_ISSET(_sock, &ex)) {
|
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Exception when polling socket.");
|
|
|
|
return FAILED;
|
|
|
|
}
|
2018-09-21 19:49:50 +00:00
|
|
|
|
|
|
|
if (rdp && FD_ISSET(_sock, rdp))
|
|
|
|
ready = true;
|
|
|
|
if (wrp && FD_ISSET(_sock, wrp))
|
|
|
|
ready = true;
|
|
|
|
|
|
|
|
return ready ? OK : ERR_BUSY;
|
|
|
|
#else
|
2018-09-01 18:15:42 +00:00
|
|
|
struct pollfd pfd;
|
|
|
|
pfd.fd = _sock;
|
|
|
|
pfd.events = POLLIN;
|
|
|
|
pfd.revents = 0;
|
|
|
|
|
|
|
|
switch (p_type) {
|
|
|
|
case POLL_TYPE_IN:
|
|
|
|
pfd.events = POLLIN;
|
|
|
|
break;
|
|
|
|
case POLL_TYPE_OUT:
|
|
|
|
pfd.events = POLLOUT;
|
|
|
|
break;
|
|
|
|
case POLL_TYPE_IN_OUT:
|
2019-06-20 14:59:48 +00:00
|
|
|
pfd.events = POLLOUT | POLLIN;
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
2018-09-21 19:49:50 +00:00
|
|
|
int ret = ::poll(&pfd, 1, p_timeout);
|
2018-09-01 18:15:42 +00:00
|
|
|
|
2019-12-01 07:57:34 +00:00
|
|
|
if (ret < 0 || pfd.revents & POLLERR) {
|
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Error when polling socket.");
|
|
|
|
return FAILED;
|
|
|
|
}
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
if (ret == 0)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
|
|
|
return OK;
|
2018-09-21 19:49:50 +00:00
|
|
|
#endif
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::recv(uint8_t *p_buffer, int p_len, int &r_read) {
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
|
|
|
r_read = ::recv(_sock, SOCK_BUF(p_buffer), p_len, 0);
|
|
|
|
|
|
|
|
if (r_read < 0) {
|
|
|
|
NetError err = _get_socket_error();
|
|
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
2019-08-22 17:00:12 +00:00
|
|
|
Error NetSocketPosix::recvfrom(uint8_t *p_buffer, int p_len, int &r_read, IP_Address &r_ip, uint16_t &r_port, bool p_peek) {
|
2018-09-01 18:15:42 +00:00
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
|
|
|
struct sockaddr_storage from;
|
|
|
|
socklen_t len = sizeof(struct sockaddr_storage);
|
|
|
|
memset(&from, 0, len);
|
|
|
|
|
2019-08-22 17:00:12 +00:00
|
|
|
r_read = ::recvfrom(_sock, SOCK_BUF(p_buffer), p_len, p_peek ? MSG_PEEK : 0, (struct sockaddr *)&from, &len);
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
if (r_read < 0) {
|
|
|
|
NetError err = _get_socket_error();
|
|
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (from.ss_family == AF_INET) {
|
|
|
|
struct sockaddr_in *sin_from = (struct sockaddr_in *)&from;
|
|
|
|
r_ip.set_ipv4((uint8_t *)&sin_from->sin_addr);
|
|
|
|
r_port = ntohs(sin_from->sin_port);
|
|
|
|
} else if (from.ss_family == AF_INET6) {
|
|
|
|
struct sockaddr_in6 *s6_from = (struct sockaddr_in6 *)&from;
|
|
|
|
r_ip.set_ipv6((uint8_t *)&s6_from->sin6_addr);
|
|
|
|
r_port = ntohs(s6_from->sin6_port);
|
|
|
|
} else {
|
|
|
|
// Unsupported socket family, should never happen.
|
|
|
|
ERR_FAIL_V(FAILED);
|
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::send(const uint8_t *p_buffer, int p_len, int &r_sent) {
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
|
|
|
int flags = 0;
|
2019-06-28 14:58:43 +00:00
|
|
|
#ifdef MSG_NOSIGNAL
|
2018-09-01 18:15:42 +00:00
|
|
|
if (_is_stream)
|
|
|
|
flags = MSG_NOSIGNAL;
|
2019-06-28 14:58:43 +00:00
|
|
|
#endif
|
2018-09-01 18:15:42 +00:00
|
|
|
r_sent = ::send(_sock, SOCK_CBUF(p_buffer), p_len, flags);
|
|
|
|
|
|
|
|
if (r_sent < 0) {
|
|
|
|
NetError err = _get_socket_error();
|
|
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
Error NetSocketPosix::sendto(const uint8_t *p_buffer, int p_len, int &r_sent, IP_Address p_ip, uint16_t p_port) {
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
|
|
|
|
struct sockaddr_storage addr;
|
|
|
|
size_t addr_size = _set_addr_storage(&addr, p_ip, p_port, _ip_type);
|
|
|
|
r_sent = ::sendto(_sock, SOCK_CBUF(p_buffer), p_len, 0, (struct sockaddr *)&addr, addr_size);
|
|
|
|
|
|
|
|
if (r_sent < 0) {
|
|
|
|
NetError err = _get_socket_error();
|
|
|
|
if (err == ERR_NET_WOULD_BLOCK)
|
|
|
|
return ERR_BUSY;
|
|
|
|
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
|
2019-11-25 16:14:07 +00:00
|
|
|
Error NetSocketPosix::set_broadcasting_enabled(bool p_enabled) {
|
|
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
2018-09-01 18:15:42 +00:00
|
|
|
// IPv6 has no broadcast support.
|
2019-11-25 16:36:09 +00:00
|
|
|
if (_ip_type == IP::TYPE_IPV6)
|
|
|
|
return ERR_UNAVAILABLE;
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_BROADCAST, SOCK_CBUF(&par), sizeof(int)) != 0) {
|
|
|
|
WARN_PRINT("Unable to change broadcast setting");
|
2019-11-25 16:14:07 +00:00
|
|
|
return FAILED;
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
2019-11-25 16:14:07 +00:00
|
|
|
return OK;
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void NetSocketPosix::set_blocking_enabled(bool p_enabled) {
|
|
|
|
ERR_FAIL_COND(!is_open());
|
|
|
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int ret = 0;
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|
|
#if defined(WINDOWS_ENABLED) || defined(NO_FCNTL)
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|
unsigned long par = p_enabled ? 0 : 1;
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|
|
ret = SOCK_IOCTL(_sock, FIONBIO, &par);
|
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|
#else
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|
|
int opts = fcntl(_sock, F_GETFL);
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|
if (p_enabled)
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|
|
ret = fcntl(_sock, F_SETFL, opts & ~O_NONBLOCK);
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|
else
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|
|
ret = fcntl(_sock, F_SETFL, opts | O_NONBLOCK);
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|
#endif
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|
|
if (ret != 0)
|
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|
|
WARN_PRINT("Unable to change non-block mode");
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|
|
|
}
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|
|
|
|
|
|
|
void NetSocketPosix::set_ipv6_only_enabled(bool p_enabled) {
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|
|
ERR_FAIL_COND(!is_open());
|
2019-02-13 08:23:29 +00:00
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|
|
// This option is only available in IPv6 sockets.
|
2018-09-01 18:15:42 +00:00
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|
|
ERR_FAIL_COND(_ip_type == IP::TYPE_IPV4);
|
|
|
|
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
|
|
if (setsockopt(_sock, IPPROTO_IPV6, IPV6_V6ONLY, SOCK_CBUF(&par), sizeof(int)) != 0) {
|
|
|
|
WARN_PRINT("Unable to change IPv4 address mapping over IPv6 option");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void NetSocketPosix::set_tcp_no_delay_enabled(bool p_enabled) {
|
|
|
|
ERR_FAIL_COND(!is_open());
|
2018-09-27 08:43:12 +00:00
|
|
|
ERR_FAIL_COND(!_is_stream); // Not TCP
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
int par = p_enabled ? 1 : 0;
|
|
|
|
if (setsockopt(_sock, IPPROTO_TCP, TCP_NODELAY, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
|
|
ERR_PRINT("Unable to set TCP no delay option");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void NetSocketPosix::set_reuse_address_enabled(bool p_enabled) {
|
|
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
|
2020-02-18 11:55:18 +00:00
|
|
|
// On Windows, enabling SO_REUSEADDR actually would also enable reuse port, very bad on TCP. Denying...
|
|
|
|
// Windows does not have this option, SO_REUSEADDR in this magical world means SO_REUSEPORT
|
|
|
|
#ifndef WINDOWS_ENABLED
|
2018-09-01 18:15:42 +00:00
|
|
|
int par = p_enabled ? 1 : 0;
|
|
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_REUSEADDR, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
|
|
WARN_PRINT("Unable to set socket REUSEADDR option!");
|
|
|
|
}
|
2020-02-18 11:55:18 +00:00
|
|
|
#endif
|
2018-09-01 18:15:42 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void NetSocketPosix::set_reuse_port_enabled(bool p_enabled) {
|
|
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
|
2020-02-18 11:55:18 +00:00
|
|
|
// See comment above...
|
|
|
|
#ifdef WINDOWS_ENABLED
|
|
|
|
#define SO_REUSEPORT SO_REUSEADDR
|
|
|
|
#endif
|
2018-09-01 18:15:42 +00:00
|
|
|
int par = p_enabled ? 1 : 0;
|
|
|
|
if (setsockopt(_sock, SOL_SOCKET, SO_REUSEPORT, SOCK_CBUF(&par), sizeof(int)) < 0) {
|
|
|
|
WARN_PRINT("Unable to set socket REUSEPORT option!");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
bool NetSocketPosix::is_open() const {
|
|
|
|
return _sock != SOCK_EMPTY;
|
|
|
|
}
|
|
|
|
|
|
|
|
int NetSocketPosix::get_available_bytes() const {
|
|
|
|
|
2019-12-01 07:57:34 +00:00
|
|
|
ERR_FAIL_COND_V(!is_open(), -1);
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
unsigned long len;
|
|
|
|
int ret = SOCK_IOCTL(_sock, FIONREAD, &len);
|
2019-12-01 07:57:34 +00:00
|
|
|
if (ret == -1) {
|
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Error when checking available bytes on socket.");
|
|
|
|
return -1;
|
|
|
|
}
|
2018-09-01 18:15:42 +00:00
|
|
|
return len;
|
|
|
|
}
|
|
|
|
|
|
|
|
Ref<NetSocket> NetSocketPosix::accept(IP_Address &r_ip, uint16_t &r_port) {
|
|
|
|
|
|
|
|
Ref<NetSocket> out;
|
|
|
|
ERR_FAIL_COND_V(!is_open(), out);
|
|
|
|
|
|
|
|
struct sockaddr_storage their_addr;
|
|
|
|
socklen_t size = sizeof(their_addr);
|
|
|
|
SOCKET_TYPE fd = ::accept(_sock, (struct sockaddr *)&their_addr, &size);
|
2019-12-01 07:57:34 +00:00
|
|
|
if (fd == SOCK_EMPTY) {
|
|
|
|
_get_socket_error();
|
|
|
|
print_verbose("Error when accepting socket connection.");
|
|
|
|
return out;
|
|
|
|
}
|
2018-09-01 18:15:42 +00:00
|
|
|
|
2018-09-27 17:39:23 +00:00
|
|
|
_set_ip_port(&their_addr, r_ip, r_port);
|
2018-09-01 18:15:42 +00:00
|
|
|
|
|
|
|
NetSocketPosix *ns = memnew(NetSocketPosix);
|
|
|
|
ns->_set_socket(fd, _ip_type, _is_stream);
|
|
|
|
ns->set_blocking_enabled(false);
|
|
|
|
return Ref<NetSocket>(ns);
|
|
|
|
}
|
2019-06-20 09:36:32 +00:00
|
|
|
|
2019-07-01 10:59:42 +00:00
|
|
|
Error NetSocketPosix::join_multicast_group(const IP_Address &p_multi_address, String p_if_name) {
|
|
|
|
return _change_multicast_group(p_multi_address, p_if_name, true);
|
2019-06-20 09:36:32 +00:00
|
|
|
}
|
|
|
|
|
2019-07-01 10:59:42 +00:00
|
|
|
Error NetSocketPosix::leave_multicast_group(const IP_Address &p_multi_address, String p_if_name) {
|
|
|
|
return _change_multicast_group(p_multi_address, p_if_name, false);
|
2019-06-20 09:36:32 +00:00
|
|
|
}
|
2019-10-01 00:15:50 +00:00
|
|
|
#endif
|