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Current File : //usr/local/lib/node_modules/mediasoup/worker/deps/usrsctp/usrsctp/programs/discard_server_upcall.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.
*/
/*
* Usage: discard_server_upcall [local_encaps_port] [remote_encaps_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 <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#endif
#include <usrsctp.h>
#include "programs_helper.h"
#define BUFFERSIZE 10240
#define PORT 9
static void
handle_upcall(struct socket *sock, void *data, int flgs)
{
char namebuf[INET6_ADDRSTRLEN];
const char *name;
uint16_t port;
char *buf;
int events;
while ((events = usrsctp_get_events(sock)) && (events & SCTP_EVENT_READ)) {
struct sctp_recvv_rn rn;
ssize_t n;
struct sockaddr_storage addr;
buf = malloc(BUFFERSIZE);
int flags = 0;
socklen_t len = (socklen_t)sizeof(struct sockaddr_storage);
unsigned int infotype = 0;
socklen_t infolen = sizeof(struct sctp_recvv_rn);
memset(&rn, 0, sizeof(struct sctp_recvv_rn));
n = usrsctp_recvv(sock, buf, BUFFERSIZE, (struct sockaddr *) &addr, &len, (void *)&rn,
&infolen, &infotype, &flags);
if (n < 0) {
perror("usrsctp_recvv");
}
if (n > 0) {
if (flags & MSG_NOTIFICATION) {
printf("Notification of length %d received.\n", (int)n);
} else {
/*
#ifdef _WIN32
_write(_fileno(stdout), buf, (unsigned int)n);
#else
if (write(fileno(stdout), buf, n) < 0) {
perror("write");
}
#endif
*/
switch (addr.ss_family) {
#ifdef INET
case AF_INET: {
struct sockaddr_in addr4;
memcpy(&addr4, (struct sockaddr_in *)&addr, sizeof(struct sockaddr_in));
name = inet_ntop(AF_INET, &addr4.sin_addr, namebuf, INET_ADDRSTRLEN);
port = ntohs(addr4.sin_port);
break;
}
#endif
#ifdef INET6
case AF_INET6: {
struct sockaddr_in6 addr6;
memcpy(&addr6, (struct sockaddr_in6 *)&addr, sizeof(struct sockaddr_in6));
name = inet_ntop(AF_INET6, &addr6.sin6_addr, namebuf, INET6_ADDRSTRLEN),
port = ntohs(addr6.sin6_port);
break;
}
#endif
default:
name = NULL;
port = 0;
break;
}
if (name == NULL) {
printf("inet_ntop failed\n");
free(buf);
return;
}
printf("Msg of length %d received from %s:%u on stream %d with SSN %u and TSN %u, PPID %u, context %u.\n",
(int)n,
namebuf,
port,
rn.recvv_rcvinfo.rcv_sid,
rn.recvv_rcvinfo.rcv_ssn,
rn.recvv_rcvinfo.rcv_tsn,
(uint32_t)ntohl(rn.recvv_rcvinfo.rcv_ppid),
rn.recvv_rcvinfo.rcv_context);
}
}
free(buf);
}
return;
}
int
main(int argc, char *argv[])
{
struct socket *sock;
struct sockaddr_in6 addr;
struct sctp_udpencaps encaps;
struct sctp_event event;
uint16_t event_types[] = {SCTP_ASSOC_CHANGE,
SCTP_PEER_ADDR_CHANGE,
SCTP_REMOTE_ERROR,
SCTP_SHUTDOWN_EVENT,
SCTP_ADAPTATION_INDICATION,
SCTP_PARTIAL_DELIVERY_EVENT};
unsigned int i;
struct sctp_assoc_value av;
const int on = 1;
if (argc > 1) {
usrsctp_init(atoi(argv[1]), NULL, debug_printf_stack);
} else {
usrsctp_init(9899, NULL, debug_printf_stack);
}
#ifdef SCTP_DEBUG
usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
#endif
usrsctp_sysctl_set_sctp_blackhole(2);
usrsctp_sysctl_set_sctp_no_csum_on_loopback(0);
if ((sock = usrsctp_socket(AF_INET6, SOCK_SEQPACKET, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
perror("usrsctp_socket");
}
usrsctp_set_non_blocking(sock, 1);
if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_I_WANT_MAPPED_V4_ADDR, (const void*)&on, (socklen_t)sizeof(int)) < 0) {
perror("usrsctp_setsockopt SCTP_I_WANT_MAPPED_V4_ADDR");
}
memset(&av, 0, sizeof(struct sctp_assoc_value));
av.assoc_id = SCTP_ALL_ASSOC;
av.assoc_value = 47;
if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_CONTEXT, (const void*)&av, (socklen_t)sizeof(struct sctp_assoc_value)) < 0) {
perror("usrsctp_setsockopt SCTP_CONTEXT");
}
if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_RECVRCVINFO, &on, sizeof(int)) < 0) {
perror("usrsctp_setsockopt SCTP_RECVRCVINFO");
}
if (argc > 2) {
memset(&encaps, 0, sizeof(struct sctp_udpencaps));
encaps.sue_address.ss_family = AF_INET6;
encaps.sue_port = htons(atoi(argv[2]));
if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_REMOTE_UDP_ENCAPS_PORT, (const void*)&encaps, (socklen_t)sizeof(struct sctp_udpencaps)) < 0) {
perror("usrsctp_setsockopt SCTP_REMOTE_UDP_ENCAPS_PORT");
}
}
memset(&event, 0, sizeof(event));
event.se_assoc_id = SCTP_FUTURE_ASSOC;
event.se_on = 1;
for (i = 0; i < (unsigned int)(sizeof(event_types)/sizeof(uint16_t)); i++) {
event.se_type = event_types[i];
if (usrsctp_setsockopt(sock, IPPROTO_SCTP, SCTP_EVENT, &event, sizeof(struct sctp_event)) < 0) {
perror("usrsctp_setsockopt SCTP_EVENT");
}
}
usrsctp_set_upcall(sock, handle_upcall, NULL);
memset((void *)&addr, 0, sizeof(struct sockaddr_in6));
#ifdef HAVE_SIN6_LEN
addr.sin6_len = sizeof(struct sockaddr_in6);
#endif
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(PORT);
addr.sin6_addr = in6addr_any;
if (usrsctp_bind(sock, (struct sockaddr *)&addr, sizeof(struct sockaddr_in6)) < 0) {
perror("usrsctp_bind");
}
if (usrsctp_listen(sock, 1) < 0) {
perror("usrsctp_listen");
}
while (1) {
#ifdef _WIN32
Sleep(1*1000);
#else
sleep(1);
#endif
}
return (0);
}
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