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Current File : //usr/local/lib/node_modules/mediasoup/worker/deps/usrsctp/usrsctp/programs/st_client.c
/*
* Copyright (C) 2011-2013 Michael Tuexen
* Copyright (C) 2011-2015 Colin Caughie
* Copyright (C) 2011-2019 Felix Weinrank
*
* 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.
*/
/*
* Usage: st_client local_addr local_port remote_addr remote_port remote_sctp_port
*/
#ifdef _WIN32
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <sys/types.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <sys/time.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 BUFFER_SIZE 80
#define DISCARD_PPID 39
#define HTTP_PPID 63
#define TIMER_INTERVAL_MSECS 10
static int connecting = 0;
static int finish = 0;
static unsigned int
get_milliseconds_count(void)
{
#ifdef _WIN32
// obtain number of milliseconds since system started
return GetTickCount();
#else
struct timeval tv;
unsigned int milliseconds;
gettimeofday(&tv, NULL); /* get current time */
milliseconds = tv.tv_sec*1000LL + tv.tv_usec/1000; /* calculate milliseconds */
return (milliseconds);
#endif
}
static void
#ifdef _WIN32
handle_events(SOCKET sock, struct socket* s, void* sconn_addr)
#else
handle_events(int sock, struct socket* s, void* sconn_addr)
#endif
{
char *dump_buf;
ssize_t length;
char buf[MAX_PACKET_SIZE];
fd_set rfds;
struct timeval tv;
unsigned next_fire_time = get_milliseconds_count();
unsigned last_fire_time = next_fire_time;
unsigned now = get_milliseconds_count();
int wait_time;
while (!finish) {
if ((int) (now - next_fire_time) > 0) {
usrsctp_handle_timers(now - last_fire_time);
last_fire_time = now;
next_fire_time = now + TIMER_INTERVAL_MSECS;
}
wait_time = next_fire_time - now;
tv.tv_sec = wait_time / 1000;
tv.tv_usec = (wait_time % 1000) * 1000;
FD_ZERO(&rfds);
FD_SET(sock, &rfds);
#ifdef _WIN32
select(0 /* ignored */, &rfds, NULL, NULL, &tv);
#else
select(sock + 1, &rfds, NULL, NULL, &tv);
#endif
if (FD_ISSET(sock, &rfds)) {
length = recv(sock, buf, MAX_PACKET_SIZE, 0);
if (length > 0) {
if ((dump_buf = usrsctp_dumppacket(buf, (size_t)length, SCTP_DUMP_INBOUND)) != NULL) {
fprintf(stderr, "%s", dump_buf);
usrsctp_freedumpbuffer(dump_buf);
}
usrsctp_conninput(sconn_addr, buf, (size_t)length, 0);
}
}
}
}
static void
on_connect(struct socket* s)
{
struct sctp_sndinfo sndinfo;
char buffer[BUFFER_SIZE];
int bufferlen;
/* memset(buffer, 'A', BUFFER_SIZE); */
/* bufferlen = BUFFER_SIZE; */
bufferlen = snprintf(buffer, BUFFER_SIZE, "GET / HTTP/1.0\r\nUser-agent: libusrsctp\r\nConnection: close\r\n\r\n");
if (bufferlen < 0) {
return;
}
sndinfo.snd_sid = 0;
sndinfo.snd_flags = 0;
sndinfo.snd_ppid = htonl(DISCARD_PPID);
sndinfo.snd_context = 0;
sndinfo.snd_assoc_id = 0;
if (usrsctp_sendv(s, buffer, bufferlen, NULL, 0, (void *)&sndinfo,
(socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
perror("usrsctp_sendv");
}
}
static void
on_socket_readable(struct socket* s) {
char buffer[BUFFER_SIZE];
union sctp_sockstore addr;
socklen_t fromlen = sizeof(addr);
struct sctp_rcvinfo rcv_info;
socklen_t infolen = sizeof(rcv_info);
unsigned int infotype = 0;
int flags = 0;
ssize_t retval;
/* Keep reading until there is no more data */
for (;;) {
retval = usrsctp_recvv(s, buffer, sizeof(buffer), (struct sockaddr*) &addr,
&fromlen, &rcv_info, &infolen, &infotype, &flags);
if (retval < 0) {
if (errno != EWOULDBLOCK) {
perror("usrsctp_recvv");
finish = 1;
}
return;
} else if (retval == 0) {
printf("socket was disconnected\n");
finish = 1;
return;
}
if (flags & MSG_NOTIFICATION) {
printf("Notification of length %d received.\n", (int)retval);
} else {
printf("Msg of length %d received via %p:%u on stream %d with SSN %u and TSN %u, PPID %u, context %u.\n",
(int)retval,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rcv_info.rcv_sid,
rcv_info.rcv_ssn,
rcv_info.rcv_tsn,
(uint32_t)ntohl(rcv_info.rcv_ppid),
rcv_info.rcv_context);
}
}
}
static void
handle_upcall(struct socket *s, void *arg, int flags)
{
int events = usrsctp_get_events(s);
if (connecting) {
if (events & SCTP_EVENT_ERROR) {
connecting = 0;
finish = 1;
} else if (events & SCTP_EVENT_WRITE) {
connecting = 0;
on_connect(s);
}
return;
}
if (events & SCTP_EVENT_READ) {
on_socket_readable(s);
}
}
static int
conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
{
char *dump_buf;
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
#ifdef _WIN32
fdp = (SOCKET *)addr;
#else
fdp = (int *)addr;
#endif
if ((dump_buf = usrsctp_dumppacket(buf, length, SCTP_DUMP_OUTBOUND)) != NULL) {
fprintf(stderr, "%s", dump_buf);
usrsctp_freedumpbuffer(dump_buf);
}
#ifdef _WIN32
if (send(*fdp, buf, (int)length, 0) == SOCKET_ERROR) {
return (WSAGetLastError());
#else
if (send(*fdp, buf, length, 0) < 0) {
return (errno);
#endif
} else {
return (0);
}
}
/* Usage: st_client local_addr local_port remote_addr remote_port remote_sctp_port */
int
main(int argc, char *argv[])
{
struct sockaddr_in sin;
struct sockaddr_conn sconn;
#ifdef _WIN32
SOCKET fd;
#else
int fd;
#endif
struct socket *s;
int retval;
#ifdef _WIN32
WSADATA wsaData;
#endif
const int on = 1;
if (argc < 6) {
printf("Usage: st_client local_addr local_port remote_addr remote_port remote_sctp_port\n");
return (-1);
}
#ifdef _WIN32
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
printf("WSAStartup failed\n");
exit(EXIT_FAILURE);
}
#endif
usrsctp_init_nothreads(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) {
printf("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) {
printf("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) {
printf("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 SCTP_DEBUG
usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
#endif
usrsctp_sysctl_set_sctp_ecn_enable(0);
usrsctp_register_address((void *)&fd);
if ((s = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
perror("usrsctp_socket");
exit(EXIT_FAILURE);
}
usrsctp_setsockopt(s, IPPROTO_SCTP, SCTP_RECVRCVINFO, &on, sizeof(int));
usrsctp_set_non_blocking(s, 1);
usrsctp_set_upcall(s, handle_upcall, NULL);
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(0);
sconn.sconn_addr = NULL;
if (usrsctp_bind(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_bind");
exit(EXIT_FAILURE);
}
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;
retval = usrsctp_connect(s, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn));
if (retval < 0 && errno != EWOULDBLOCK && errno != EINPROGRESS) {
perror("usrsctp_connect");
exit(EXIT_FAILURE);
}
connecting = 1;
handle_events(fd, s, sconn.sconn_addr);
return (0);
}
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