mirror of
https://github.com/godotengine/godot
synced 2024-09-05 20:09:26 +00:00
799 lines
23 KiB
C++
799 lines
23 KiB
C++
/**************************************************************************/
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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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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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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// Some proprietary Unix-derived platforms don't expose Unix sockets
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// so this allows skipping this file to reimplement this API differently.
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#ifndef UNIX_SOCKET_UNAVAILABLE
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#if defined(UNIX_ENABLED)
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#include <errno.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <netinet/tcp.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/socket.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifdef WEB_ENABLED
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#include <arpa/inet.h>
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#endif
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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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// 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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#define SOCK_CONNECT(p_sock, p_addr, p_addr_len) ::connect(p_sock, p_addr, p_addr_len)
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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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#include <mswsock.h>
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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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// 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, nullptr, nullptr, nullptr, nullptr)
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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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#endif // UNIX_ENABLED
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size_t NetSocketPosix::_set_addr_storage(struct sockaddr_storage *p_addr, const IPAddress &p_ip, uint16_t p_port, IP::Type p_ip_type) {
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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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memcpy(&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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ERR_FAIL_COND_V(!p_ip.is_wildcard() && !p_ip.is_ipv4(), 0);
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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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memcpy(&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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void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IPAddress *r_ip, uint16_t *r_port) {
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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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if (r_ip) {
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r_ip->set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr));
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}
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if (r_port) {
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*r_port = ntohs(addr4->sin_port);
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}
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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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if (r_ip) {
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r_ip->set_ipv6(addr6->sin6_addr.s6_addr);
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}
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if (r_port) {
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*r_port = ntohs(addr6->sin6_port);
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}
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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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#if defined(WINDOWS_ENABLED)
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if (_create == nullptr) {
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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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_create = _create_func;
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}
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void NetSocketPosix::cleanup() {
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#if defined(WINDOWS_ENABLED)
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if (_create != nullptr) {
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WSACleanup();
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}
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_create = nullptr;
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#endif
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}
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NetSocketPosix::NetSocketPosix() :
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_sock(SOCK_EMPTY) {
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}
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NetSocketPosix::~NetSocketPosix() {
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close();
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}
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// Silence a warning reported in GH-27594.
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// EAGAIN and EWOULDBLOCK have the same value on most platforms, but it's not guaranteed.
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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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NetSocketPosix::NetError NetSocketPosix::_get_socket_error() const {
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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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}
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if (err == WSAEINPROGRESS || err == WSAEALREADY) {
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return ERR_NET_IN_PROGRESS;
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}
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if (err == WSAEWOULDBLOCK) {
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return ERR_NET_WOULD_BLOCK;
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}
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if (err == WSAEADDRINUSE || err == WSAEADDRNOTAVAIL) {
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return ERR_NET_ADDRESS_INVALID_OR_UNAVAILABLE;
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}
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if (err == WSAEACCES) {
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return ERR_NET_UNAUTHORIZED;
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}
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if (err == WSAEMSGSIZE || err == WSAENOBUFS) {
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return ERR_NET_BUFFER_TOO_SMALL;
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}
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print_verbose("Socket error: " + itos(err));
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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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}
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if (errno == EINPROGRESS || errno == EALREADY) {
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return ERR_NET_IN_PROGRESS;
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}
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if (errno == EAGAIN || errno == EWOULDBLOCK) {
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return ERR_NET_WOULD_BLOCK;
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}
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if (errno == EADDRINUSE || errno == EINVAL || errno == EADDRNOTAVAIL) {
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return ERR_NET_ADDRESS_INVALID_OR_UNAVAILABLE;
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}
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if (errno == EACCES) {
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return ERR_NET_UNAUTHORIZED;
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}
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if (errno == ENOBUFS) {
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return ERR_NET_BUFFER_TOO_SMALL;
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}
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print_verbose("Socket error: " + itos(errno));
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return ERR_NET_OTHER;
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#endif
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}
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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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bool NetSocketPosix::_can_use_ip(const IPAddress &p_ip, const bool p_for_bind) const {
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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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return !(_ip_type != IP::TYPE_ANY && !p_ip.is_wildcard() && _ip_type != type);
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}
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_FORCE_INLINE_ Error NetSocketPosix::_change_multicast_group(IPAddress 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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IPAddress if_ip;
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uint32_t if_v6id = 0;
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HashMap<String, IP::Interface_Info> if_info;
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IP::get_singleton()->get_local_interfaces(&if_info);
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for (KeyValue<String, IP::Interface_Info> &E : if_info) {
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IP::Interface_Info &c = E.value;
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if (c.name != p_if_name) {
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continue;
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}
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if_v6id = (uint32_t)c.index.to_int();
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if (type == IP::TYPE_IPV6) {
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break; // IPv6 uses index.
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}
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for (const IPAddress &F : c.ip_addresses) {
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if (!F.is_ipv4()) {
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continue; // Wrong IP type
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}
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if_ip = F;
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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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memcpy(&greq.imr_multiaddr, p_ip.get_ipv4(), 4);
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memcpy(&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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memcpy(&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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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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// 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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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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}
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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__)
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// OpenBSD does not support dual stacking, fallback to IPv4 only.
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if (ip_type == IP::TYPE_ANY) {
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ip_type = IP::TYPE_IPV4;
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}
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#endif
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int family = ip_type == IP::TYPE_IPV4 ? AF_INET : AF_INET6;
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int protocol = p_sock_type == TYPE_TCP ? IPPROTO_TCP : IPPROTO_UDP;
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int type = p_sock_type == TYPE_TCP ? SOCK_STREAM : SOCK_DGRAM;
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_sock = socket(family, type, protocol);
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if (_sock == SOCK_EMPTY && ip_type == IP::TYPE_ANY) {
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// Careful here, changing the referenced parameter so the caller knows that we are using an IPv4 socket
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// in place of a dual stack one, and further calls to _set_sock_addr will work as expected.
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ip_type = IP::TYPE_IPV4;
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family = AF_INET;
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_sock = socket(family, type, protocol);
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}
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ERR_FAIL_COND_V(_sock == SOCK_EMPTY, FAILED);
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_ip_type = ip_type;
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if (family == AF_INET6) {
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// Select IPv4 over IPv6 mapping
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set_ipv6_only_enabled(ip_type != IP::TYPE_ANY);
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}
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if (protocol == IPPROTO_UDP) {
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// Make sure to disable broadcasting for UDP sockets.
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// Depending on the OS, this option might or might not be enabled by default. Let's normalize it.
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set_broadcasting_enabled(false);
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}
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_is_stream = p_sock_type == TYPE_TCP;
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// Disable descriptor sharing with subprocesses.
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_set_close_exec_enabled(true);
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#if defined(WINDOWS_ENABLED)
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if (!_is_stream) {
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// Disable windows feature/bug reporting WSAECONNRESET/WSAENETRESET when
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// recv/recvfrom and an ICMP reply was received from a previous send/sendto.
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unsigned long disable = 0;
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if (ioctlsocket(_sock, SIO_UDP_CONNRESET, &disable) == SOCKET_ERROR) {
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print_verbose("Unable to turn off UDP WSAECONNRESET behavior on Windows");
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}
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if (ioctlsocket(_sock, SIO_UDP_NETRESET, &disable) == SOCKET_ERROR) {
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// This feature seems not to be supported on wine.
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print_verbose("Unable to turn off UDP WSAENETRESET behavior on Windows");
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}
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}
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#endif
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#if defined(SO_NOSIGPIPE)
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// Disable SIGPIPE (should only be relevant to stream sockets, but seems to affect UDP too on iOS)
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int par = 1;
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if (setsockopt(_sock, SOL_SOCKET, SO_NOSIGPIPE, SOCK_CBUF(&par), sizeof(int)) != 0) {
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print_verbose("Unable to turn off SIGPIPE on socket");
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}
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#endif
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return OK;
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}
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void NetSocketPosix::close() {
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if (_sock != SOCK_EMPTY) {
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SOCK_CLOSE(_sock);
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}
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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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}
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Error NetSocketPosix::bind(IPAddress p_addr, uint16_t p_port) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!_can_use_ip(p_addr, true), ERR_INVALID_PARAMETER);
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sockaddr_storage addr;
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size_t addr_size = _set_addr_storage(&addr, p_addr, p_port, _ip_type);
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if (::bind(_sock, (struct sockaddr *)&addr, addr_size) != 0) {
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NetError err = _get_socket_error();
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print_verbose("Failed to bind socket. Error: " + itos(err));
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close();
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return ERR_UNAVAILABLE;
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}
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return OK;
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}
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Error NetSocketPosix::listen(int p_max_pending) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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if (::listen(_sock, p_max_pending) != 0) {
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_get_socket_error();
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print_verbose("Failed to listen from socket.");
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close();
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return FAILED;
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}
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return OK;
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}
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Error NetSocketPosix::connect_to_host(IPAddress p_host, uint16_t p_port) {
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ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
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ERR_FAIL_COND_V(!_can_use_ip(p_host, false), ERR_INVALID_PARAMETER);
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struct sockaddr_storage addr;
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size_t addr_size = _set_addr_storage(&addr, p_host, p_port, _ip_type);
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if (SOCK_CONNECT(_sock, (struct sockaddr *)&addr, addr_size) != 0) {
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NetError err = _get_socket_error();
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switch (err) {
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// We are already connected
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case ERR_NET_IS_CONNECTED:
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return OK;
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// Still waiting to connect, try again in a while
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case ERR_NET_WOULD_BLOCK:
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case ERR_NET_IN_PROGRESS:
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return ERR_BUSY;
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default:
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print_verbose("Connection to remote host failed!");
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close();
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return FAILED;
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}
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|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error NetSocketPosix::poll(PollType p_type, int p_timeout) const {
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
#if defined(WINDOWS_ENABLED)
|
|
bool ready = false;
|
|
fd_set rd, wr, ex;
|
|
fd_set *rdp = nullptr;
|
|
fd_set *wrp = nullptr;
|
|
FD_ZERO(&rd);
|
|
FD_ZERO(&wr);
|
|
FD_ZERO(&ex);
|
|
FD_SET(_sock, &ex);
|
|
struct timeval timeout = { p_timeout / 1000, (p_timeout % 1000) * 1000 };
|
|
// For blocking operation, pass nullptr timeout pointer to select.
|
|
struct timeval *tp = nullptr;
|
|
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);
|
|
|
|
if (ret == SOCKET_ERROR) {
|
|
return FAILED;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
return ERR_BUSY;
|
|
}
|
|
|
|
if (FD_ISSET(_sock, &ex)) {
|
|
_get_socket_error();
|
|
print_verbose("Exception when polling socket.");
|
|
return FAILED;
|
|
}
|
|
|
|
if (rdp && FD_ISSET(_sock, rdp)) {
|
|
ready = true;
|
|
}
|
|
if (wrp && FD_ISSET(_sock, wrp)) {
|
|
ready = true;
|
|
}
|
|
|
|
return ready ? OK : ERR_BUSY;
|
|
#else
|
|
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:
|
|
pfd.events = POLLOUT | POLLIN;
|
|
}
|
|
|
|
int ret = ::poll(&pfd, 1, p_timeout);
|
|
|
|
if (ret < 0 || pfd.revents & POLLERR) {
|
|
_get_socket_error();
|
|
print_verbose("Error when polling socket.");
|
|
return FAILED;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
return ERR_BUSY;
|
|
}
|
|
|
|
return OK;
|
|
#endif
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
if (err == ERR_NET_BUFFER_TOO_SMALL) {
|
|
return ERR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error NetSocketPosix::recvfrom(uint8_t *p_buffer, int p_len, int &r_read, IPAddress &r_ip, uint16_t &r_port, bool p_peek) {
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
|
|
struct sockaddr_storage from;
|
|
socklen_t len = sizeof(struct sockaddr_storage);
|
|
memset(&from, 0, len);
|
|
|
|
r_read = ::recvfrom(_sock, SOCK_BUF(p_buffer), p_len, p_peek ? MSG_PEEK : 0, (struct sockaddr *)&from, &len);
|
|
|
|
if (r_read < 0) {
|
|
NetError err = _get_socket_error();
|
|
if (err == ERR_NET_WOULD_BLOCK) {
|
|
return ERR_BUSY;
|
|
}
|
|
|
|
if (err == ERR_NET_BUFFER_TOO_SMALL) {
|
|
return ERR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
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;
|
|
#ifdef MSG_NOSIGNAL
|
|
if (_is_stream) {
|
|
flags = MSG_NOSIGNAL;
|
|
}
|
|
#endif
|
|
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;
|
|
}
|
|
if (err == ERR_NET_BUFFER_TOO_SMALL) {
|
|
return ERR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error NetSocketPosix::sendto(const uint8_t *p_buffer, int p_len, int &r_sent, IPAddress 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;
|
|
}
|
|
if (err == ERR_NET_BUFFER_TOO_SMALL) {
|
|
return ERR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return FAILED;
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error NetSocketPosix::set_broadcasting_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
|
|
// IPv6 has no broadcast support.
|
|
if (_ip_type == IP::TYPE_IPV6) {
|
|
return ERR_UNAVAILABLE;
|
|
}
|
|
|
|
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");
|
|
return FAILED;
|
|
}
|
|
return OK;
|
|
}
|
|
|
|
void NetSocketPosix::set_blocking_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
int ret = 0;
|
|
#if defined(WINDOWS_ENABLED)
|
|
unsigned long par = p_enabled ? 0 : 1;
|
|
ret = SOCK_IOCTL(_sock, FIONBIO, &par);
|
|
#else
|
|
int opts = fcntl(_sock, F_GETFL);
|
|
if (p_enabled) {
|
|
ret = fcntl(_sock, F_SETFL, opts & ~O_NONBLOCK);
|
|
} else {
|
|
ret = fcntl(_sock, F_SETFL, opts | O_NONBLOCK);
|
|
}
|
|
#endif
|
|
|
|
if (ret != 0) {
|
|
WARN_PRINT("Unable to change non-block mode");
|
|
}
|
|
}
|
|
|
|
void NetSocketPosix::set_ipv6_only_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
// This option is only available in IPv6 sockets.
|
|
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());
|
|
ERR_FAIL_COND(!_is_stream); // Not TCP
|
|
|
|
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());
|
|
|
|
// 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
|
|
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!");
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void NetSocketPosix::set_reuse_port_enabled(bool p_enabled) {
|
|
ERR_FAIL_COND(!is_open());
|
|
|
|
// See comment above...
|
|
#ifdef WINDOWS_ENABLED
|
|
#define SO_REUSEPORT SO_REUSEADDR
|
|
#endif
|
|
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 {
|
|
ERR_FAIL_COND_V(!is_open(), -1);
|
|
|
|
unsigned long len;
|
|
int ret = SOCK_IOCTL(_sock, FIONREAD, &len);
|
|
if (ret == -1) {
|
|
_get_socket_error();
|
|
print_verbose("Error when checking available bytes on socket.");
|
|
return -1;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
Error NetSocketPosix::get_socket_address(IPAddress *r_ip, uint16_t *r_port) const {
|
|
ERR_FAIL_COND_V(!is_open(), FAILED);
|
|
|
|
struct sockaddr_storage saddr;
|
|
socklen_t len = sizeof(saddr);
|
|
if (getsockname(_sock, (struct sockaddr *)&saddr, &len) != 0) {
|
|
_get_socket_error();
|
|
print_verbose("Error when reading local socket address.");
|
|
return FAILED;
|
|
}
|
|
_set_ip_port(&saddr, r_ip, r_port);
|
|
return OK;
|
|
}
|
|
|
|
Ref<NetSocket> NetSocketPosix::accept(IPAddress &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);
|
|
if (fd == SOCK_EMPTY) {
|
|
_get_socket_error();
|
|
print_verbose("Error when accepting socket connection.");
|
|
return out;
|
|
}
|
|
|
|
_set_ip_port(&their_addr, &r_ip, &r_port);
|
|
|
|
NetSocketPosix *ns = memnew(NetSocketPosix);
|
|
ns->_set_socket(fd, _ip_type, _is_stream);
|
|
ns->set_blocking_enabled(false);
|
|
return Ref<NetSocket>(ns);
|
|
}
|
|
|
|
Error NetSocketPosix::join_multicast_group(const IPAddress &p_multi_address, String p_if_name) {
|
|
return _change_multicast_group(p_multi_address, p_if_name, true);
|
|
}
|
|
|
|
Error NetSocketPosix::leave_multicast_group(const IPAddress &p_multi_address, String p_if_name) {
|
|
return _change_multicast_group(p_multi_address, p_if_name, false);
|
|
}
|
|
|
|
#endif // UNIX_SOCKET_UNAVAILABLE
|