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path: root/drivers/unix/net_socket_posix.cpp
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Diffstat (limited to 'drivers/unix/net_socket_posix.cpp')
-rw-r--r--drivers/unix/net_socket_posix.cpp616
1 files changed, 616 insertions, 0 deletions
diff --git a/drivers/unix/net_socket_posix.cpp b/drivers/unix/net_socket_posix.cpp
new file mode 100644
index 0000000000..833b17f122
--- /dev/null
+++ b/drivers/unix/net_socket_posix.cpp
@@ -0,0 +1,616 @@
+/*************************************************************************/
+/* net_socket_posix.cpp */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* https://godotengine.org */
+/*************************************************************************/
+/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
+/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
+/* */
+/* 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 "net_socket_posix.h"
+
+#if defined(UNIX_ENABLED)
+
+#include <errno.h>
+#include <netdb.h>
+#include <poll.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <unistd.h>
+#ifndef NO_FCNTL
+#include <fcntl.h>
+#else
+#include <sys/ioctl.h>
+#endif
+#include <netinet/in.h>
+
+#include <sys/socket.h>
+#ifdef JAVASCRIPT_ENABLED
+#include <arpa/inet.h>
+#endif
+
+#include <netinet/tcp.h>
+
+#if defined(__APPLE__)
+#define MSG_NOSIGNAL SO_NOSIGPIPE
+#endif
+
+// Some custom defines to minimize ifdefs
+#define SOCK_EMPTY -1
+#define SOCK_BUF(x) x
+#define SOCK_CBUF(x) x
+#define SOCK_IOCTL ioctl
+#define SOCK_CLOSE ::close
+
+/* Windows */
+#elif defined(WINDOWS_ENABLED)
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+#include <mswsock.h>
+// Some custom defines to minimize ifdefs
+#define SOCK_EMPTY INVALID_SOCKET
+#define SOCK_BUF(x) (char *)(x)
+#define SOCK_CBUF(x) (const char *)(x)
+#define SOCK_IOCTL ioctlsocket
+#define SOCK_CLOSE closesocket
+
+// Windows doesn't have this flag
+#ifndef MSG_NOSIGNAL
+#define MSG_NOSIGNAL 0
+#endif
+// Workaround missing flag in MinGW
+#if defined(__MINGW32__) && !defined(SIO_UDP_NETRESET)
+#define SIO_UDP_NETRESET _WSAIOW(IOC_VENDOR, 15)
+#endif
+
+#endif
+
+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) {
+
+ memset(p_addr, 0, sizeof(struct sockaddr_storage));
+ if (p_ip_type == IP::TYPE_IPV6 || p_ip_type == IP::TYPE_ANY) { // IPv6 socket
+
+ // IPv6 only socket with IPv4 address
+ ERR_FAIL_COND_V(!p_ip.is_wildcard() && p_ip_type == IP::TYPE_IPV6 && p_ip.is_ipv4(), 0);
+
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
+ addr6->sin6_family = AF_INET6;
+ addr6->sin6_port = htons(p_port);
+ if (p_ip.is_valid()) {
+ copymem(&addr6->sin6_addr.s6_addr, p_ip.get_ipv6(), 16);
+ } else {
+ addr6->sin6_addr = in6addr_any;
+ }
+ return sizeof(sockaddr_in6);
+ } else { // IPv4 socket
+
+ // IPv4 socket with IPv6 address
+ ERR_FAIL_COND_V(!p_ip.is_wildcard() && !p_ip.is_ipv4(), 0);
+
+ struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
+ addr4->sin_family = AF_INET;
+ addr4->sin_port = htons(p_port); // short, network byte order
+
+ if (p_ip.is_valid()) {
+ copymem(&addr4->sin_addr.s_addr, p_ip.get_ipv4(), 4);
+ } else {
+ addr4->sin_addr.s_addr = INADDR_ANY;
+ }
+
+ return sizeof(sockaddr_in);
+ }
+}
+
+void NetSocketPosix::_set_ip_port(struct sockaddr_storage *p_addr, IP_Address &r_ip, uint16_t &r_port) {
+
+ if (p_addr->ss_family == AF_INET) {
+
+ struct sockaddr_in *addr4 = (struct sockaddr_in *)p_addr;
+ r_ip.set_ipv4((uint8_t *)&(addr4->sin_addr.s_addr));
+
+ r_port = ntohs(addr4->sin_port);
+
+ } else if (p_addr->ss_family == AF_INET6) {
+
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)p_addr;
+ r_ip.set_ipv6(addr6->sin6_addr.s6_addr);
+
+ r_port = ntohs(addr6->sin6_port);
+ };
+}
+
+NetSocket *NetSocketPosix::_create_func() {
+ return memnew(NetSocketPosix);
+}
+
+void NetSocketPosix::make_default() {
+#if defined(WINDOWS_ENABLED)
+ if (_create == NULL) {
+ WSADATA data;
+ WSAStartup(MAKEWORD(2, 2), &data);
+ }
+#endif
+ _create = _create_func;
+}
+
+void NetSocketPosix::cleanup() {
+#if defined(WINDOWS_ENABLED)
+ if (_create != NULL) {
+ WSACleanup();
+ }
+ _create = NULL;
+#endif
+}
+
+NetSocketPosix::NetSocketPosix() {
+ _sock = SOCK_EMPTY;
+ _ip_type = IP::TYPE_NONE;
+ _is_stream = false;
+}
+
+NetSocketPosix::~NetSocketPosix() {
+ close();
+}
+
+NetSocketPosix::NetError NetSocketPosix::_get_socket_error() {
+#if defined(WINDOWS_ENABLED)
+ int err = WSAGetLastError();
+
+ if (err == WSAEISCONN)
+ return ERR_NET_IS_CONNECTED;
+ if (err == WSAEINPROGRESS || err == WSAEALREADY)
+ return ERR_NET_IN_PROGRESS;
+ if (err == WSAEWOULDBLOCK)
+ return ERR_NET_WOULD_BLOCK;
+ ERR_PRINTS("Socket error: " + itos(err));
+ return ERR_NET_OTHER;
+#else
+ if (errno == EISCONN)
+ return ERR_NET_IS_CONNECTED;
+ if (errno == EINPROGRESS || errno == EALREADY)
+ return ERR_NET_IN_PROGRESS;
+ if (errno == EAGAIN || errno == EWOULDBLOCK)
+ return ERR_NET_WOULD_BLOCK;
+ ERR_PRINTS("Socket error: " + itos(errno));
+ return ERR_NET_OTHER;
+#endif
+}
+
+bool NetSocketPosix::_can_use_ip(const IP_Address p_ip, const bool p_for_bind) const {
+
+ if (p_for_bind && !(p_ip.is_valid() || p_ip.is_wildcard())) {
+ return false;
+ } else if (!p_for_bind && !p_ip.is_valid()) {
+ return false;
+ }
+ // Check if socket support this IP type.
+ IP::Type type = p_ip.is_ipv4() ? IP::TYPE_IPV4 : IP::TYPE_IPV6;
+ if (_ip_type != IP::TYPE_ANY && !p_ip.is_wildcard() && _ip_type != type) {
+ return false;
+ }
+ return true;
+}
+
+void NetSocketPosix::_set_socket(SOCKET_TYPE p_sock, IP::Type p_ip_type, bool p_is_stream) {
+ _sock = p_sock;
+ _ip_type = p_ip_type;
+ _is_stream = p_is_stream;
+}
+
+Error NetSocketPosix::open(Type p_sock_type, IP::Type &ip_type) {
+ ERR_FAIL_COND_V(is_open(), ERR_ALREADY_IN_USE);
+ ERR_FAIL_COND_V(ip_type > IP::TYPE_ANY || ip_type < IP::TYPE_NONE, ERR_INVALID_PARAMETER);
+
+#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);
+ }
+
+ if (protocol == IPPROTO_UDP && ip_type != IP::TYPE_IPV6) {
+ // Enable broadcasting for UDP sockets if it's not IPv6 only (IPv6 has no broadcast option).
+ set_broadcasting_enabled(true);
+ }
+
+ _is_stream = p_sock_type == TYPE_TCP;
+
+#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) {
+ print_verbose("Unable to turn off UDP WSAECONNRESET behaviour on Windows");
+ }
+ if (ioctlsocket(_sock, SIO_UDP_NETRESET, &disable) == SOCKET_ERROR) {
+ // This feature seems not to be supported on wine.
+ print_verbose("Unable to turn off UDP WSAENETRESET behaviour on Windows");
+ }
+ }
+#endif
+ 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);
+
+ if (::bind(_sock, (struct sockaddr *)&addr, addr_size) == SOCK_EMPTY) {
+ close();
+ ERR_FAIL_V(ERR_UNAVAILABLE);
+ }
+
+ return OK;
+}
+
+Error NetSocketPosix::listen(int p_max_pending) {
+ ERR_FAIL_COND_V(!is_open(), ERR_UNCONFIGURED);
+
+ if (::listen(_sock, p_max_pending) == SOCK_EMPTY) {
+
+ close();
+ ERR_FAIL_V(FAILED);
+ };
+
+ 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);
+
+ if (::connect(_sock, (struct sockaddr *)&addr, addr_size) == SOCK_EMPTY) {
+
+ 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:
+ ERR_PRINT("Connection to remote host failed!");
+ close();
+ return FAILED;
+ }
+ }
+
+ 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 = NULL;
+ fd_set *wrp = NULL;
+ FD_ZERO(&rd);
+ FD_ZERO(&wr);
+ FD_ZERO(&ex);
+ FD_SET(_sock, &ex);
+ struct timeval timeout = { p_timeout, 0 };
+ // 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 = &wr;
+ break;
+ case POLL_TYPE_IN_OUT:
+ FD_SET(_sock, &rd);
+ FD_SET(_sock, &wr);
+ rdp = &rd;
+ wrp = &wr;
+ }
+ int ret = select(1, rdp, wrp, &ex, tp);
+
+ ERR_FAIL_COND_V(ret == SOCKET_ERROR, FAILED);
+
+ if (ret == 0)
+ return ERR_BUSY;
+
+ ERR_FAIL_COND_V(FD_ISSET(_sock, &ex), 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);
+
+ ERR_FAIL_COND_V(ret < 0, FAILED);
+ ERR_FAIL_COND_V(pfd.revents & POLLERR, 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;
+
+ return FAILED;
+ }
+
+ return OK;
+}
+
+Error NetSocketPosix::recvfrom(uint8_t *p_buffer, int p_len, int &r_read, IP_Address &r_ip, uint16_t &r_port) {
+ 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, 0, (struct sockaddr *)&from, &len);
+
+ 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;
+ if (_is_stream)
+ flags = MSG_NOSIGNAL;
+ 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;
+}
+
+void NetSocketPosix::set_broadcasting_enabled(bool p_enabled) {
+ ERR_FAIL_COND(!is_open());
+ // IPv6 has no broadcast support.
+ ERR_FAIL_COND(_ip_type == IP::TYPE_IPV6);
+
+ 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");
+ }
+}
+
+void NetSocketPosix::set_blocking_enabled(bool p_enabled) {
+ ERR_FAIL_COND(!is_open());
+
+ int ret = 0;
+#if defined(WINDOWS_ENABLED) || defined(NO_FCNTL)
+ 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 avaiable 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());
+
+ 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!");
+ }
+}
+
+void NetSocketPosix::set_reuse_port_enabled(bool p_enabled) {
+// Windows does not have this option, as it is always ON when setting REUSEADDR.
+#ifndef WINDOWS_ENABLED
+ ERR_FAIL_COND(!is_open());
+
+ 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!");
+ }
+#endif
+}
+
+bool NetSocketPosix::is_open() const {
+ return _sock != SOCK_EMPTY;
+}
+
+int NetSocketPosix::get_available_bytes() const {
+
+ ERR_FAIL_COND_V(_sock == SOCK_EMPTY, -1);
+
+ unsigned long len;
+ int ret = SOCK_IOCTL(_sock, FIONREAD, &len);
+ ERR_FAIL_COND_V(ret == -1, 0);
+ 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);
+ ERR_FAIL_COND_V(fd == SOCK_EMPTY, 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);
+}
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