/** @file * IPRT - UDP/IP. */ /* * Copyright (C) 2006-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included * in the VirtualBox distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. * * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 */ #ifndef IPRT_INCLUDED_udp_h #define IPRT_INCLUDED_udp_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include #include #include #include #include #ifdef IN_RING0 # error "There are no RTFile APIs available Ring-0 Host Context!" #endif RT_C_DECLS_BEGIN /** @defgroup grp_rt_udp RTUdp - UDP/IP * @ingroup grp_rt * @{ */ /** * Handle incoming UDP datagrams. * * @returns iprt status code. * @returns VERR_UDP_SERVER_STOP to terminate the server loop forcing * the RTUdpCreateServer() call to return. * @param Sock The socket on which the datagram needs to be received. * @param pvUser User argument. */ typedef DECLCALLBACKTYPE(int, FNRTUDPSERVE,(RTSOCKET Sock, void *pvUser)); /** Pointer to a RTUDPSERVE(). */ typedef FNRTUDPSERVE *PFNRTUDPSERVE; /** * Create single datagram at a time UDP Server in a separate thread. * * The thread will loop accepting datagrams and call pfnServe for * each of the incoming datagrams in turn. The pfnServe function can * return VERR_UDP_SERVER_STOP too terminate this loop. RTUdpServerDestroy() * should be used to terminate the server. * * @returns iprt status code. * @param pszAddress The address for creating a datagram socket. * If NULL or empty string the server is bound to all interfaces. * @param uPort The port for creating a datagram socket. * @param enmType The thread type. * @param pszThrdName The name of the worker thread. * @param pfnServe The function which will handle incoming datagrams. * @param pvUser User argument passed to pfnServe. * @param ppServer Where to store the serverhandle. */ RTR3DECL(int) RTUdpServerCreate(const char *pszAddress, unsigned uPort, RTTHREADTYPE enmType, const char *pszThrdName, PFNRTUDPSERVE pfnServe, void *pvUser, PPRTUDPSERVER ppServer); /** * Create single datagram at a time UDP Server. * The caller must call RTUdpServerReceive() to actually start the server. * * @returns iprt status code. * @param pszAddress The address for creating a datagram socket. * If NULL the server is bound to all interfaces. * @param uPort The port for creating a datagram socket. * @param ppServer Where to store the serverhandle. */ RTR3DECL(int) RTUdpServerCreateEx(const char *pszAddress, uint32_t uPort, PPRTUDPSERVER ppServer); /** * Shuts down the server. * * @returns IPRT status code. * @param pServer Handle to the server. */ RTR3DECL(int) RTUdpServerShutdown(PRTUDPSERVER pServer); /** * Closes down and frees a UDP Server. * * @returns iprt status code. * @param pServer Handle to the server. */ RTR3DECL(int) RTUdpServerDestroy(PRTUDPSERVER pServer); /** * Listen for incoming datagrams. * * The function will loop waiting for datagrams and call pfnServe for * each of the incoming datagrams in turn. The pfnServe function can * return VERR_UDP_SERVER_STOP too terminate this loop. A stopped server * can only be destroyed. * * @returns iprt status code. * @param pServer The server handle as returned from RTUdpServerCreateEx(). * @param pfnServe The function which will handle incoming datagrams. * @param pvUser User argument passed to pfnServe. */ RTR3DECL(int) RTUdpServerListen(PRTUDPSERVER pServer, PFNRTUDPSERVE pfnServe, void *pvUser); /** * Receive data from a socket. * * @returns iprt status code. * @param Sock Socket descriptor. * @param pvBuffer Where to put the data we read. * @param cbBuffer Read buffer size. * @param pcbRead Number of bytes read. Must be non-NULL. * @param pSrcAddr The network address to read from. */ RTR3DECL(int) RTUdpRead(RTSOCKET Sock, void *pvBuffer, size_t cbBuffer, size_t *pcbRead, PRTNETADDR pSrcAddr); /** * Send data to a socket. * * @returns iprt status code. * @retval VERR_INTERRUPTED if interrupted before anything was written. * * @param pServer Handle to the server. * @param pvBuffer Buffer to write data to socket. * @param cbBuffer How much to write. * @param pDstAddr Destination address. */ RTR3DECL(int) RTUdpWrite(PRTUDPSERVER pServer, const void *pvBuffer, size_t cbBuffer, PCRTNETADDR pDstAddr); /** * Create and connect a data socket. * * @returns iprt status code. * @param pszAddress The address to connect to. * @param uPort The port to connect to. * @param pLocalAddr The local address to bind this socket to, can be * NULL. * @param pSock Where to store the handle to the established connection. */ RTR3DECL(int) RTUdpCreateClientSocket(const char *pszAddress, uint32_t uPort, PRTNETADDR pLocalAddr, PRTSOCKET pSock); /** * Create a data socket acting as a server. * * @returns iprt status code. * @param pszAddress The address to connect to. * @param uPort The port to connect to. * @param pSock Where to store the handle to the established connection. */ RTR3DECL(int) RTUdpCreateServerSocket(const char *pszAddress, uint32_t uPort, PRTSOCKET pSock); /** @} */ RT_C_DECLS_END #endif /* !IPRT_INCLUDED_udp_h */