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rtpreceive.cpp
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432 lines (386 loc) · 19.4 KB
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/*
* Copyright (c) 2011, Jim Hollinger
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Jim Hollinger nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/* Example output:
RTP receive V1.0
Project web site: http://code.google.com/p/rtpreceive/
Listening on port 1234 ...
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29283; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29284; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29285; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29286; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29287; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29288; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29289; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29290; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29291; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29292; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29293; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29294; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29295; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29296; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29297; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29298; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29299; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29300; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29301; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29302; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29303; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29304; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29305; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29306; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29307; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29308; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29309; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29310; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29311; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29312; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29313; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29314; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29315; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29316; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29317; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29318; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29319; ts 3827707364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29320; ts 3827710364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29321; ts 3827710364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29322; ts 3827710364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29323; ts 3827713364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29324; ts 3827713364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29325; ts 3827713364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29326; ts 3827716364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29327; ts 3827716364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29328; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29329; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29330; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29331; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29332; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29333; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29334; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29335; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29336; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29337; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29338; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29339; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29340; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29341; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29342; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29343; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29344; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29345; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29346; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29347; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29348; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29349; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29350; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29351; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29352; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29353; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29354; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29355; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29356; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29357; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29358; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29359; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29360; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29361; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29362; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29363; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29364; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29365; ts 3827719364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29366; ts 3827722364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29367; ts 3827722364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29368; ts 3827722364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29369; ts 3827725364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29370; ts 3827725364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29371; ts 3827728364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29372; ts 3827728364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29373; ts 3827731364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29374; ts 3827731364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29375; ts 3827734364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29376; ts 3827734364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29377; ts 3827737364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29378; ts 3827737364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29379; ts 3827740364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29380; ts 3827740364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 0; pt 96; seq 29381; ts 3827743364; ssrc 1262133036
RTP: ver 2; pad 0; ext 0; cc 0; mark 1; pt 96; seq 29382; ts 3827743364; ssrc 1262133036
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined (WIN32)
# include <conio.h>
# include <winsock2.h>
# define CLOSE(soc) closesocket(soc)
#else
# include <unistd.h>
# include <sys/types.h>
# include <sys/socket.h>
# include <netinet/in.h>
# define SOCKET int
# define INVALID_SOCKET (-1)
# define SOCKET_ERROR (-1)
# define SD_RECEIVE SHUT_RD
# define SD_SEND SHUT_WR
# define CLOSE(soc) close(soc)
#endif
#include "rtppacket.h"
#include "pcapfile.h"
#define VERSION_STR "V1.1"
#define MAX_BUFFER_LEN (16384)
bool zeroTimestamp_flag = true;
// open input socket for listening
SOCKET open_input(unsigned short port, sockaddr *addr, int addrlen) {
// create socket
SOCKET soc = INVALID_SOCKET;
soc = socket(PF_INET, SOCK_DGRAM, 0);
if (soc == INVALID_SOCKET) {
fprintf(stderr, "Input socket creation failed\n");
} else {
// bind to local receive port
memset(addr, 0, addrlen);
sockaddr_in *config = reinterpret_cast<sockaddr_in *>(addr);
config->sin_family = AF_INET;
config->sin_addr.s_addr = htonl(INADDR_ANY); // listen to anyone
config->sin_port = htons(port);
if (bind(soc, addr, addrlen) == SOCKET_ERROR) {
shutdown(soc, SD_RECEIVE);
fprintf(stderr, "Input socket bind to %hu failed\n", port);
CLOSE(soc);
soc = INVALID_SOCKET;
} else {
printf("Listening on port %hu\n", port);
}
}
return soc;
}
// open output socket for loopback retransmission
SOCKET open_output(unsigned short port, sockaddr *addr, int addrlen) {
// create socket
SOCKET soc = INVALID_SOCKET;
soc = socket(PF_INET, SOCK_DGRAM, 0);
if (soc == INVALID_SOCKET) {
fprintf(stderr, "Output socket creation failed\n");
} else {
// configure for loopback retransmission
memset(addr, 0, addrlen);
sockaddr_in *config = reinterpret_cast<sockaddr_in *>(addr);
config->sin_family = AF_INET;
config->sin_addr.s_addr = htonl(INADDR_LOOPBACK); // retransmit on loopback
config->sin_port = htons(port);
printf("Retransmitting on loopback port %hu\n", port);
}
return soc;
}
void printUsage(const char *basename) {
printf("\nUsage: %s -s src_port [-d dst_port] [-f pcap_filename]\n", basename);
printf(" src_port UDP port on which to receive RTP data\n");
printf(" dst_port UDP port on which to retransmit RTP data\n");
printf(" pcap_filename Name of pcap file containing RTP data\n");
exit(EXIT_FAILURE);
}
// main app
int main(int argc, char * const argv[]) {
int rc = EXIT_SUCCESS;
printf("\nRTP receive %s\n", VERSION_STR);
printf(" Project web site: http://code.google.com/p/rtpreceive/\n\n");
const char *pcap_filename = NULL;
unsigned short in_port = 0;
unsigned short out_port = 0;
// check command line
char *basename = NULL;
basename = strrchr(argv[0], '/');
if (basename == NULL) {
basename = strrchr(argv[0], '\\');
}
if (basename == NULL) {
basename = argv[0];
} else {
basename++;
}
if (argc <= 1) {
printUsage(basename);
}
for (int i = 1; i < argc; i++) {
if ((argv[i][0] == '-') && (argv[i][2] == '\0')) {
switch (argv[i][1]) {
case 'f':
if (++i < argc) {
pcap_filename = argv[i];
} else {
fprintf(stderr, "No filename specified with '-f' option\n");
printUsage(basename);
}
break;
case 's':
if (++i < argc) {
sscanf(argv[i], "%hu", &in_port);;
} else {
fprintf(stderr, "No port specified with '-s' option\n");
printUsage(basename);
}
break;
case 'd':
if (++i < argc) {
sscanf(argv[i], "%hu", &out_port);;
} else {
fprintf(stderr, "No port specified with '-d' option\n");
printUsage(basename);
}
break;
}
} else {
fprintf(stderr, "Unrecognized option: \"%s\"\n", argv[i]);
printUsage(basename);
}
}
// open pcap file
PcapFile pcap;
if (pcap_filename != NULL) {
pcap.open(pcap_filename);
}
// initialize windows socket library
#if defined (WIN32)
WORD wVersionRequested = MAKEWORD(2, 2); // version 2.2
WSADATA wsaData;
int err = WSAStartup(wVersionRequested, &wsaData); // requires wsock32.lib
if (err != 0) {
fprintf(stderr, "WSAStartup failure\n");
exit(EXIT_FAILURE);
}
#endif // WIN32
// open sockets
SOCKET in_soc = INVALID_SOCKET;
SOCKET out_soc = INVALID_SOCKET;
sockaddr addr;
int addrlen = sizeof(addr);
if ((in_port != 0) && (pcap_filename == NULL)) {
in_soc = open_input(in_port, &addr, addrlen);
}
if (out_port != 0) {
out_soc = open_output(out_port, &addr, addrlen);
}
if (((in_soc == INVALID_SOCKET) && (in_port != 0) && (pcap_filename == NULL)) ||
((out_soc == INVALID_SOCKET) && (out_port != 0))) {
rc = EXIT_FAILURE;
} else {
// main loop
char *buffer = NULL;
char *socData = new char[MAX_BUFFER_LEN];
int rtp_pool_num = 0;
RtpPacket rtp_pool[2];
RtpPacket *rtp = &rtp_pool[rtp_pool_num];
RtpPacket *rtp_prev = rtp;
bool firstTime_flag = true;
bool flag = true;
while (flag) {
// receive data
int n = 0;
if (in_soc != INVALID_SOCKET) {
buffer = socData;
n = recv(in_soc, buffer, MAX_BUFFER_LEN, 0);
} else {
if (pcap.readPacket()) {
if (pcap.getDestinationPort() == in_port) {
buffer = static_cast <char *> (pcap.getPacketData());
n = pcap.getPacketLength();
#if defined (WIN32)
Sleep(10);
#endif // WIN32
}
}
}
if (n > 0) {
rtp->parse(buffer, n);
rtp->print();
if (!firstTime_flag) {
rtp->checkOrder(rtp_prev);
}
// retransmit
if (out_soc != INVALID_SOCKET) {
if (zeroTimestamp_flag) {
rtp->timestamp = 0;
}
rtp->store(buffer, n);
int m = sendto(out_soc, buffer, n, 0, &addr, addrlen);
if (m != n) {
fprintf(stderr, "Retransmit failure\n");
}
}
// flip-flop rtp objects
rtp_prev = rtp;
rtp_pool_num = (rtp_pool_num + 1) % 2;
rtp = &rtp_pool[rtp_pool_num];
}
// cui
#if defined (WIN32)
if (_kbhit()) {
int c = _getch();
if (c == 0x20) {
printf("\nPaused, press Esc to exit, Space to single-step, or Enter to resume ...");
c = _getch();
printf("\n");
}
switch (c) {
case 0x1B: // escape
flag = false;
break;
case 0x20: // space
_ungetch(c);
break;
case 't':
zeroTimestamp_flag = true;
printf("Setting retransmit timestamp to zero\n");
break;
case 'T':
zeroTimestamp_flag = false;
printf("Not setting retransmit timestamp to zero\n");
break;
default:
break;
}
}
#endif // WIN32
firstTime_flag = false;
}
delete []socData;
}
// close sockets
if (out_soc != INVALID_SOCKET) {
shutdown(out_soc, SD_SEND);
CLOSE(out_soc);
}
if (in_soc != INVALID_SOCKET) {
shutdown(in_soc, SD_RECEIVE);
CLOSE(in_soc);
}
pcap.close();
return rc;
}