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Current File : //usr/local/lib/node_modules/mediasoup/worker/deps/usrsctp/usrsctp/programs/ekr_peer.c
/*
* Copyright (C) 2011-2013 Michael Tuexen
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*/
#ifdef _WIN32
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <errno.h>
#include <pthread.h>
#include <unistd.h>
#else
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <usrsctp.h>
#include "programs_helper.h"
#define MAX_PACKET_SIZE (1<<16)
#define LINE_LENGTH 80
#define DISCARD_PPID 39
#ifdef _WIN32
static DWORD WINAPI
#else
static void *
#endif
handle_packets(void *arg)
{
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
ssize_t length;
char buf[MAX_PACKET_SIZE];
#ifdef _WIN32
fdp = (SOCKET *)arg;
#else
fdp = (int *)arg;
#endif
for (;;) {
#if defined(__NetBSD__)
pthread_testcancel();
#endif
length = recv(*fdp, buf, MAX_PACKET_SIZE, 0);
if (length > 0) {
usrsctp_conninput(fdp, buf, (size_t)length, 0);
}
}
#ifdef _WIN32
return 0;
#else
return (NULL);
#endif
}
static int
conn_output(void *addr, void *buffer, size_t length, uint8_t tos, uint8_t set_df)
{
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
#ifdef _WIN32
fdp = (SOCKET *)addr;
#else
fdp = (int *)addr;
#endif
#ifdef _WIN32
if (send(*fdp, buffer, (int)length, 0) == SOCKET_ERROR) {
return (WSAGetLastError());
#else
if (send(*fdp, buffer, length, 0) < 0) {
return (errno);
#endif
} else {
return (0);
}
}
static int
receive_cb(struct socket *sock, union sctp_sockstore addr, void *data,
size_t datalen, struct sctp_rcvinfo rcv, int flags, void *ulp_info)
{
if (data) {
if (flags & MSG_NOTIFICATION) {
handle_notification((union sctp_notification *)data, datalen);
} else {
printf("Msg of length %d received via %p:%u on stream %u with SSN %u and TSN %u, PPID %u, context %u.\n",
(int)datalen,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rcv.rcv_sid,
rcv.rcv_ssn,
rcv.rcv_tsn,
(uint32_t)ntohl(rcv.rcv_ppid),
rcv.rcv_context);
}
free(data);
} else {
usrsctp_deregister_address(ulp_info);
usrsctp_close(sock);
}
return (1);
}
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
struct sockaddr_conn sconn;
struct sctp_event event;
uint16_t event_types[] = {SCTP_ASSOC_CHANGE,
SCTP_PEER_ADDR_CHANGE,
SCTP_SEND_FAILED_EVENT};
unsigned int i;
#ifdef _WIN32
SOCKET fd;
#else
int fd, rc;
#endif
struct socket *s;
#ifdef _WIN32
HANDLE tid;
#else
pthread_t tid;
#endif
struct sctp_sndinfo sndinfo;
char line[LINE_LENGTH];
#ifdef _WIN32
WSADATA wsaData;
#endif
if (argc < 4) {
printf("error: this program requires 4 arguments!\n");
exit(EXIT_FAILURE);
}
#ifdef _WIN32
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
fprintf(stderr, "WSAStartup failed\n");
exit(EXIT_FAILURE);
}
#endif
usrsctp_init(0, conn_output, debug_printf_stack);
/* set up a connected UDP socket */
#ifdef _WIN32
if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
fprintf(stderr, "socket() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if ((fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("socket");
exit(EXIT_FAILURE);
}
#endif
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin.sin_len = sizeof(struct sockaddr_in);
#endif
sin.sin_port = htons(atoi(argv[2]));
if (!inet_pton(AF_INET, argv[1], &sin.sin_addr.s_addr)){
printf("error: invalid address\n");
exit(EXIT_FAILURE);
}
#ifdef _WIN32
if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
fprintf(stderr, "bind() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if (bind(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
perror("bind");
exit(EXIT_FAILURE);
}
#endif
memset(&sin, 0, sizeof(struct sockaddr_in));
sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin.sin_len = sizeof(struct sockaddr_in);
#endif
sin.sin_port = htons(atoi(argv[4]));
if (!inet_pton(AF_INET, argv[3], &sin.sin_addr.s_addr)){
printf("error: invalid address\n");
exit(EXIT_FAILURE);
}
#ifdef _WIN32
if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
fprintf(stderr, "connect() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if (connect(fd, (struct sockaddr *)&sin, sizeof(struct sockaddr_in)) < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
#endif
#ifdef _WIN32
if ((tid = CreateThread(NULL, 0, &handle_packets, (void *)&fd, 0, NULL)) == NULL) {
fprintf(stderr, "CreateThread() failed with error: %lu\n", GetLastError());
exit(EXIT_FAILURE);
}
#else
if ((rc = pthread_create(&tid, NULL, &handle_packets, (void *)&fd)) != 0) {
fprintf(stderr, "pthread_create: %s\n", strerror(rc));
exit(EXIT_FAILURE);
}
#endif
#ifdef SCTP_DEBUG
usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
#endif
usrsctp_register_address((void *)&fd);
usrsctp_sysctl_set_sctp_ecn_enable(0);
if ((s = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, receive_cb, NULL, 0, &fd)) == NULL) {
perror("usrsctp_socket");
}
/* Enable the events of interest. */
if (usrsctp_set_non_blocking(s, 1) < 0) {
perror("usrsctp_set_non_blocking");
}
memset(&event, 0, sizeof(event));
event.se_assoc_id = SCTP_ALL_ASSOC;
event.se_on = 1;
for (i = 0; i < sizeof(event_types)/sizeof(uint16_t); i++) {
event.se_type = event_types[i];
if (usrsctp_setsockopt(s, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(event)) < 0) {
perror("setsockopt SCTP_EVENT");
}
}
memset(&sconn, 0, sizeof(struct sockaddr_conn));
sconn.sconn_family = AF_CONN;
#ifdef HAVE_SCONN_LEN
sconn.sconn_len = sizeof(struct sockaddr_conn);
#endif
sconn.sconn_port = htons(atoi(argv[5]));
sconn.sconn_addr = &fd;
if (usrsctp_bind(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_bind");
}
memset(&sconn, 0, sizeof(struct sockaddr_conn));
sconn.sconn_family = AF_CONN;
#ifdef HAVE_SCONN_LEN
sconn.sconn_len = sizeof(struct sockaddr_conn);
#endif
sconn.sconn_port = htons(atoi(argv[6]));
sconn.sconn_addr = &fd;
if (usrsctp_connect(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_connect");
}
for (;;) {
#if defined(_WIN32) && !defined(__MINGW32__)
if (gets_s(line, LINE_LENGTH) == NULL) {
#else
if (fgets(line, LINE_LENGTH, stdin) == NULL) {
#endif
if (usrsctp_shutdown(s, SHUT_WR) < 0) {
perror("usrsctp_shutdown");
}
while (usrsctp_finish() != 0) {
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
break;
}
sndinfo.snd_sid = 1;
sndinfo.snd_flags = 0;
sndinfo.snd_ppid = htonl(DISCARD_PPID);
sndinfo.snd_context = 0;
sndinfo.snd_assoc_id = 0;
if (usrsctp_sendv(s, line, strlen(line), NULL, 0, (void *)&sndinfo,
(socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
perror("usrsctp_sendv");
}
}
while (usrsctp_finish() != 0) {
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
#ifdef _WIN32
TerminateThread(tid, 0);
WaitForSingleObject(tid, INFINITE);
if (closesocket(fd) == SOCKET_ERROR) {
fprintf(stderr, "closesocket() failed with error: %d\n", WSAGetLastError());
}
WSACleanup();
#else
pthread_cancel(tid);
pthread_join(tid, NULL);
if (close(fd) < 0) {
perror("close");
}
#endif
return (0);
}
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