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274 lines
12 KiB
C++
274 lines
12 KiB
C++
/*
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* SRT - Secure, Reliable, Transport
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* Copyright (c) 2018 Haivision Systems Inc.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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/*****************************************************************************
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Copyright (c) 2001 - 2011, The Board of Trustees of the University of Illinois.
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions
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and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the University of Illinois
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nor the names of its contributors may be used to
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endorse or promote products derived from this
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software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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/*****************************************************************************
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written by
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Yunhong Gu, last updated 01/18/2011
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modified by
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Haivision Systems Inc.
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*****************************************************************************/
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/* WARNING!!!
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* Since now this file is a "C and C++ header".
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* It should be then able to be interpreted by C compiler, so
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* all C++-oriented things must be ifdef'd-out by __cplusplus.
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*
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* Mind also comments - to prevent any portability problems,
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* B/C++ comments (// -> EOL) should not be used unless the
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* area is under __cplusplus condition already.
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*
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* NOTE: this file contains _STRUCTURES_ that are common to C and C++,
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* plus some functions and other functionalities ONLY FOR C++. This
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* file doesn't contain _FUNCTIONS_ predicted to be used in C - see udtc.h
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*/
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#ifndef INC_SRT_UDT_H
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#define INC_SRT_UDT_H
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#include "srt.h"
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/*
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* SRT_ENABLE_THREADCHECK IS SET IN MAKEFILE, NOT HERE
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*/
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#if defined(SRT_ENABLE_THREADCHECK)
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#include "threadcheck.h"
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#else
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#define THREAD_STATE_INIT(name)
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#define THREAD_EXIT()
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#define THREAD_PAUSED()
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#define THREAD_RESUMED()
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#define INCREMENT_THREAD_ITERATIONS()
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#endif
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#ifdef __cplusplus
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#include <fstream>
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#include <set>
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#include <string>
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#include <vector>
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#endif
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////////////////////////////////////////////////////////////////////////////////
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//if compiling on VC6.0 or pre-WindowsXP systems
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//use -DLEGACY_WIN32
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//if compiling with MinGW, it only works on XP or above
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//use -D_WIN32_WINNT=0x0501
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////////////////////////////////////////////////////////////////////////////////
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struct CPerfMon
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{
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// global measurements
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int64_t msTimeStamp; // time since the UDT entity is started, in milliseconds
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int64_t pktSentTotal; // total number of sent data packets, including retransmissions
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int64_t pktRecvTotal; // total number of received packets
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int pktSndLossTotal; // total number of lost packets (sender side)
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int pktRcvLossTotal; // total number of lost packets (receiver side)
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int pktRetransTotal; // total number of retransmitted packets
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int pktRcvRetransTotal; // total number of retransmitted packets received
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int pktSentACKTotal; // total number of sent ACK packets
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int pktRecvACKTotal; // total number of received ACK packets
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int pktSentNAKTotal; // total number of sent NAK packets
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int pktRecvNAKTotal; // total number of received NAK packets
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int64_t usSndDurationTotal; // total time duration when UDT is sending data (idle time exclusive)
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// local measurements
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int64_t pktSent; // number of sent data packets, including retransmissions
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int64_t pktRecv; // number of received packets
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int pktSndLoss; // number of lost packets (sender side)
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int pktRcvLoss; // number of lost packets (receiver side)
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int pktRetrans; // number of retransmitted packets
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int pktRcvRetrans; // number of retransmitted packets received
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int pktSentACK; // number of sent ACK packets
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int pktRecvACK; // number of received ACK packets
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int pktSentNAK; // number of sent NAK packets
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int pktRecvNAK; // number of received NAK packets
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double mbpsSendRate; // sending rate in Mb/s
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double mbpsRecvRate; // receiving rate in Mb/s
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int64_t usSndDuration; // busy sending time (i.e., idle time exclusive)
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int pktReorderDistance; // size of order discrepancy in received sequences
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double pktRcvAvgBelatedTime; // average time of packet delay for belated packets (packets with sequence past the ACK)
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int64_t pktRcvBelated; // number of received AND IGNORED packets due to having come too late
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// instant measurements
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double usPktSndPeriod; // packet sending period, in microseconds
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int pktFlowWindow; // flow window size, in number of packets
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int pktCongestionWindow; // congestion window size, in number of packets
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int pktFlightSize; // number of packets on flight
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double msRTT; // RTT, in milliseconds
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double mbpsBandwidth; // estimated bandwidth, in Mb/s
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int byteAvailSndBuf; // available UDT sender buffer size
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int byteAvailRcvBuf; // available UDT receiver buffer size
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};
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typedef SRTSOCKET UDTSOCKET; //legacy alias
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#ifdef __cplusplus
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namespace srt { class CUDTException; }
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namespace UDT
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{
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typedef srt::CUDTException ERRORINFO;
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typedef CPerfMon TRACEINFO;
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// This facility is used only for select() function.
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// This is considered obsolete and the epoll() functionality rather should be used.
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typedef std::set<SRTSOCKET> UDSET;
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#define UD_CLR(u, uset) ((uset)->erase(u))
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#define UD_ISSET(u, uset) ((uset)->find(u) != (uset)->end())
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#define UD_SET(u, uset) ((uset)->insert(u))
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#define UD_ZERO(uset) ((uset)->clear())
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SRT_API extern const SRTSOCKET INVALID_SOCK;
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#undef ERROR
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SRT_API extern const int ERROR;
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SRT_API int startup();
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SRT_API int cleanup();
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SRT_API SRTSOCKET socket();
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inline SRTSOCKET socket(int , int , int ) { return socket(); }
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SRT_API int bind(SRTSOCKET u, const struct sockaddr* name, int namelen);
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SRT_API int bind2(SRTSOCKET u, UDPSOCKET udpsock);
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SRT_API int listen(SRTSOCKET u, int backlog);
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SRT_API SRTSOCKET accept(SRTSOCKET u, struct sockaddr* addr, int* addrlen);
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SRT_API int connect(SRTSOCKET u, const struct sockaddr* name, int namelen);
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SRT_API int close(SRTSOCKET u);
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SRT_API int getpeername(SRTSOCKET u, struct sockaddr* name, int* namelen);
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SRT_API int getsockname(SRTSOCKET u, struct sockaddr* name, int* namelen);
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SRT_API int getsockopt(SRTSOCKET u, int level, SRT_SOCKOPT optname, void* optval, int* optlen);
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SRT_API int setsockopt(SRTSOCKET u, int level, SRT_SOCKOPT optname, const void* optval, int optlen);
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SRT_API int send(SRTSOCKET u, const char* buf, int len, int flags);
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SRT_API int recv(SRTSOCKET u, char* buf, int len, int flags);
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SRT_API int sendmsg(SRTSOCKET u, const char* buf, int len, int ttl = -1, bool inorder = false, int64_t srctime = 0);
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SRT_API int recvmsg(SRTSOCKET u, char* buf, int len, uint64_t& srctime);
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SRT_API int recvmsg(SRTSOCKET u, char* buf, int len);
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SRT_API int64_t sendfile(SRTSOCKET u, std::fstream& ifs, int64_t& offset, int64_t size, int block = 364000);
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SRT_API int64_t recvfile(SRTSOCKET u, std::fstream& ofs, int64_t& offset, int64_t size, int block = 7280000);
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SRT_API int64_t sendfile2(SRTSOCKET u, const char* path, int64_t* offset, int64_t size, int block = 364000);
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SRT_API int64_t recvfile2(SRTSOCKET u, const char* path, int64_t* offset, int64_t size, int block = 7280000);
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// select and selectEX are DEPRECATED; please use epoll.
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SRT_API int select(int nfds, UDSET* readfds, UDSET* writefds, UDSET* exceptfds, const struct timeval* timeout);
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SRT_API int selectEx(const std::vector<SRTSOCKET>& fds, std::vector<SRTSOCKET>* readfds,
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std::vector<SRTSOCKET>* writefds, std::vector<SRTSOCKET>* exceptfds, int64_t msTimeOut);
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SRT_API int epoll_create();
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SRT_API int epoll_add_usock(int eid, SRTSOCKET u, const int* events = NULL);
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SRT_API int epoll_add_ssock(int eid, SYSSOCKET s, const int* events = NULL);
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SRT_API int epoll_remove_usock(int eid, SRTSOCKET u);
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SRT_API int epoll_remove_ssock(int eid, SYSSOCKET s);
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SRT_API int epoll_update_usock(int eid, SRTSOCKET u, const int* events = NULL);
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SRT_API int epoll_update_ssock(int eid, SYSSOCKET s, const int* events = NULL);
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SRT_API int epoll_wait(int eid, std::set<SRTSOCKET>* readfds, std::set<SRTSOCKET>* writefds, int64_t msTimeOut,
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std::set<SYSSOCKET>* lrfds = NULL, std::set<SYSSOCKET>* wrfds = NULL);
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SRT_API int epoll_wait2(int eid, SRTSOCKET* readfds, int* rnum, SRTSOCKET* writefds, int* wnum, int64_t msTimeOut,
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SYSSOCKET* lrfds = NULL, int* lrnum = NULL, SYSSOCKET* lwfds = NULL, int* lwnum = NULL);
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SRT_API int epoll_uwait(const int eid, SRT_EPOLL_EVENT* fdsSet, int fdsSize, int64_t msTimeOut);
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SRT_API int epoll_release(int eid);
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SRT_API ERRORINFO& getlasterror();
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SRT_API int getlasterror_code();
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SRT_API const char* getlasterror_desc();
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SRT_API int bstats(SRTSOCKET u, SRT_TRACEBSTATS* perf, bool clear = true);
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SRT_API SRT_SOCKSTATUS getsockstate(SRTSOCKET u);
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} // namespace UDT
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// This is a log configuration used inside SRT.
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// Applications using SRT, if they want to use the logging mechanism
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// are free to create their own logger configuration objects for their
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// own logger FA objects, or create their own. The object of this type
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// is required to initialize the logger FA object.
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namespace srt_logging { struct LogConfig; }
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SRT_API extern srt_logging::LogConfig srt_logger_config;
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namespace srt
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{
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// This is a C++ SRT API extension. This is not a part of legacy UDT API.
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SRT_API void setloglevel(srt_logging::LogLevel::type ll);
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SRT_API void addlogfa(srt_logging::LogFA fa);
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SRT_API void dellogfa(srt_logging::LogFA fa);
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SRT_API void resetlogfa(std::set<srt_logging::LogFA> fas);
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SRT_API void resetlogfa(const int* fara, size_t fara_size);
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SRT_API void setlogstream(std::ostream& stream);
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SRT_API void setloghandler(void* opaque, SRT_LOG_HANDLER_FN* handler);
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SRT_API void setlogflags(int flags);
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SRT_API bool setstreamid(SRTSOCKET u, const std::string& sid);
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SRT_API std::string getstreamid(SRTSOCKET u);
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// Namespace alias
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namespace logging {
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using namespace srt_logging;
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}
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} // namespace srt
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// Planned deprecated removal: rel1.6.0
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// There's also no portable way possible to enforce a deprecation
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// compiler warning, so leaving as is.
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namespace UDT
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{
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// Backward-compatible aliases, just for a case someone was using it.
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using srt::setloglevel;
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using srt::addlogfa;
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using srt::dellogfa;
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using srt::resetlogfa;
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using srt::setlogstream;
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using srt::setloghandler;
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using srt::setlogflags;
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using srt::setstreamid;
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using srt::getstreamid;
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}
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#endif /* __cplusplus */
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#endif
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