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/*
* Copyright (C) 2011-2013 Michael Tuexen
* Copyright (C) 2018-2020 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: ekr_loop [client_port] [server_port] [crc32c offloading <0/1>]
*/
#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 <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 (1<<20)
#define DISCARD_PPID 39
#define NUMBER_OF_STEPS 10
static uint8_t crc32c_offloading = 0;
struct upcall_meta {
uint8_t sender;
void* addr;
};
#ifdef _WIN32
static DWORD WINAPI
#else
static void *
#endif
handle_packets(void *arg)
{
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
char *dump_buf;
struct sctp_common_header *hdr;
ssize_t length;
char buf[MAX_PACKET_SIZE];
uint32_t received_crc32c, computed_crc32c;
#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) {
if ((dump_buf = usrsctp_dumppacket(buf, (size_t)length, SCTP_DUMP_INBOUND)) != NULL) {
//debug_printf_clean("%s\n", dump_buf);
usrsctp_freedumpbuffer(dump_buf);
}
if (crc32c_offloading) {
if ((size_t)length >= sizeof(struct sctp_common_header)) {
hdr = (struct sctp_common_header *)buf;
received_crc32c = hdr->crc32c;
hdr->crc32c = htonl(0);
computed_crc32c = usrsctp_crc32c(buf, (size_t)length);
hdr->crc32c = received_crc32c;
if (received_crc32c == computed_crc32c) {
usrsctp_conninput(fdp, buf, (size_t)length, 0);
} else {
debug_printf("Wrong CRC32c: expected %08x received %08x\n",
ntohl(computed_crc32c), ntohl(received_crc32c));
}
} else {
debug_printf("Packet too short: length %zd", length);
}
} else {
usrsctp_conninput(fdp, buf, (size_t)length, 0);
}
}
}
#ifdef _WIN32
return 0;
#else
return (NULL);
#endif
}
static int
conn_output(void *addr, void *buf, size_t length, uint8_t tos, uint8_t set_df)
{
char *dump_buf;
struct sctp_common_header *hdr;
#ifdef _WIN32
SOCKET *fdp;
#else
int *fdp;
#endif
#ifdef _WIN32
fdp = (SOCKET *)addr;
#else
fdp = (int *)addr;
#endif
if (crc32c_offloading && length >= sizeof(struct sctp_common_header)) {
hdr = (struct sctp_common_header *)buf;
hdr->crc32c = usrsctp_crc32c(buf, (size_t)length);
}
if ((dump_buf = usrsctp_dumppacket(buf, length, SCTP_DUMP_OUTBOUND)) != NULL) {
//debug_printf_clean("%s\n", 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);
}
}
static void
handle_upcall(struct socket *sock, void *data, int flgs)
{
char *buf;
int events;
struct upcall_meta *meta;
meta = data;
buf = malloc(MAX_PACKET_SIZE);
while ((events = usrsctp_get_events(sock)) && (events & SCTP_EVENT_READ)) {
struct sctp_recvv_rn rn;
ssize_t n;
union sctp_sockstore addr;
int flags = 0;
socklen_t len = (socklen_t)sizeof(addr);
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, MAX_PACKET_SIZE, (struct sockaddr *) &addr, &len, (void *)&rn, &infolen, &infotype, &flags);
if (n < 0) {
perror("usrsctp_recvv");
break;
} else if (n > 0) {
if (flags & MSG_NOTIFICATION) {
debug_printf("MSG RCV: Notification of length %d received.\n", (int)n);
} else {
debug_printf("MSG RCV: Data length %d, addr %p:%u, stream %u, SSN %u, TSN %u, PPID %u, context %u, %s%s.\n",
(int)n,
addr.sconn.sconn_addr,
ntohs(addr.sconn.sconn_port),
rn.recvv_rcvinfo.rcv_sid,
rn.recvv_rcvinfo.rcv_ssn,
rn.recvv_rcvinfo.rcv_tsn,
ntohl(rn.recvv_rcvinfo.rcv_ppid),
rn.recvv_rcvinfo.rcv_context,
(rn.recvv_rcvinfo.rcv_flags & SCTP_UNORDERED) ? "unordered" : "ordered",
(flags & MSG_EOR) ? ", EOR" : "");
}
} else {
debug_printf("Connection closed!\n");
usrsctp_deregister_address(meta->addr);
usrsctp_close(sock);
break;
}
}
free(buf);
return;
}
static void
print_addresses(struct socket *sock)
{
int i, n;
struct sockaddr *addrs, *addr;
#if !defined(HAVE_SA_LEN)
int sa_len;
#endif
debug_printf("Addresses: ");
n = usrsctp_getladdrs(sock, 0, &addrs);
addr = addrs;
for (i = 0; i < n; i++) {
switch (addr->sa_family) {
case AF_INET:
{
struct sockaddr_in *sin;
char buf[INET_ADDRSTRLEN];
const char *name;
sin = (struct sockaddr_in *)addr;
name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
debug_printf_clean("%s:%d", name, ntohs(sin->sin_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_in);
#endif
break;
}
case AF_INET6:
{
struct sockaddr_in6 *sin6;
char buf[INET6_ADDRSTRLEN];
const char *name;
sin6 = (struct sockaddr_in6 *)addr;
name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
debug_printf_clean("%s:%d", name, ntohs(sin6->sin6_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_in6);
#endif
break;
}
case AF_CONN:
{
struct sockaddr_conn *sconn;
sconn = (struct sockaddr_conn *)addr;
debug_printf_clean("%p:%d", sconn->sconn_addr, ntohs(sconn->sconn_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_conn);
#endif
break;
}
default:
debug_printf_clean("Unknown family: %d", addr->sa_family);
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr);
#endif
break;
}
#if !defined(HAVE_SA_LEN)
addr = (struct sockaddr *)((char *)addr + sa_len);
#else
addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
#endif
if (i != n - 1) {
debug_printf_clean(",");
}
}
if (n > 0) {
usrsctp_freeladdrs(addrs);
}
debug_printf_clean("<->");
n = usrsctp_getpaddrs(sock, 0, &addrs);
addr = addrs;
for (i = 0; i < n; i++) {
switch (addr->sa_family) {
case AF_INET:
{
struct sockaddr_in *sin;
char buf[INET_ADDRSTRLEN];
const char *name;
sin = (struct sockaddr_in *)addr;
name = inet_ntop(AF_INET, &sin->sin_addr, buf, INET_ADDRSTRLEN);
debug_printf_clean("%s:%d", name, ntohs(sin->sin_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_in);
#endif
break;
}
case AF_INET6:
{
struct sockaddr_in6 *sin6;
char buf[INET6_ADDRSTRLEN];
const char *name;
sin6 = (struct sockaddr_in6 *)addr;
name = inet_ntop(AF_INET6, &sin6->sin6_addr, buf, INET6_ADDRSTRLEN);
debug_printf_clean("%s:%d", name, ntohs(sin6->sin6_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_in6);
#endif
break;
}
case AF_CONN:
{
struct sockaddr_conn *sconn;
sconn = (struct sockaddr_conn *)addr;
debug_printf_clean("%p:%d", sconn->sconn_addr, ntohs(sconn->sconn_port));
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr_conn);
#endif
break;
}
default:
debug_printf_clean("Unknown family: %d", addr->sa_family);
#if !defined(HAVE_SA_LEN)
sa_len = (int)sizeof(struct sockaddr);
#endif
break;
}
#if !defined(HAVE_SA_LEN)
addr = (struct sockaddr *)((char *)addr + sa_len);
#else
addr = (struct sockaddr *)((caddr_t)addr + addr->sa_len);
#endif
if (i != n - 1) {
debug_printf_clean(",");
}
}
if (n > 0) {
usrsctp_freepaddrs(addrs);
}
debug_printf_clean("\n");
}
int
main(int argc, char *argv[])
{
struct sockaddr_in sin_s, sin_c;
struct sockaddr_conn sconn;
struct sctp_paddrparams paddrparams;
#ifdef _WIN32
SOCKET fd_c, fd_s;
#else
int fd_c, fd_s, rc;
#endif
struct socket *s_c, *s_s, *s_l;
#ifdef _WIN32
HANDLE tid_c, tid_s;
#else
pthread_t tid_c, tid_s;
#endif
int i, j, cur_buf_size, snd_buf_size, rcv_buf_size, sendv_retries_left, on;
socklen_t opt_len;
struct sctp_sndinfo sndinfo;
char *line;
#ifdef _WIN32
WSADATA wsaData;
#endif
uint16_t client_port = 9900;
uint16_t server_port = 9901;
struct upcall_meta upcall_meta_client;
struct upcall_meta upcall_meta_server;
#ifdef OUTPUT_TO_LOGFILE
FILE *logfile;
logfile = fopen("ekr_loop_upcall.log", "a+");
if (logfile == NULL) {
debug_printf("Failed creating logfile\n");
exit(EXIT_FAILURE);
}
debug_set_target(logfile);
#endif
if (argc > 1) {
client_port = atoi(argv[1]);
}
if (argc > 2) {
server_port = atoi(argv[2]);
}
if (argc > 3) {
crc32c_offloading = atoi(argv[3]);
}
debug_printf("Starting program\n");
debug_printf("Config:\n\tClient Port:\t%d\n\tServer Port:\t%d\n\tCRC32C Calc:\t%s\n", client_port, server_port, crc32c_offloading ? "offloaded" : "NOT offloaded");
#ifdef _WIN32
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
debug_printf("WSAStartup failed\n");
exit (EXIT_FAILURE);
}
#endif
usrsctp_init(0, conn_output, debug_printf_stack);
#ifdef SCTP_DEBUG
usrsctp_sysctl_set_sctp_debug_on(SCTP_DEBUG_NONE);
#endif // SCTP_DEBUG
if (crc32c_offloading) {
usrsctp_enable_crc32c_offload();
}
/* set up a connected UDP socket */
#ifdef _WIN32
if ((fd_c = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
debug_printf("socket() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
if ((fd_s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET) {
debug_printf("socket() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if ((fd_c = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("socket");
exit(EXIT_FAILURE);
}
if ((fd_s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
perror("socket");
exit(EXIT_FAILURE);
}
#endif
memset(&sin_c, 0, sizeof(struct sockaddr_in));
sin_c.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin_c.sin_len = sizeof(struct sockaddr_in);
#endif
sin_c.sin_port = htons(client_port);
sin_c.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
memset(&sin_s, 0, sizeof(struct sockaddr_in));
sin_s.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
sin_s.sin_len = sizeof(struct sockaddr_in);
#endif
sin_s.sin_port = htons(server_port);
sin_s.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
#ifdef _WIN32
if (bind(fd_c, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
debug_printf("bind() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
if (bind(fd_s, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
debug_printf("bind() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if (bind(fd_c, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) < 0) {
perror("bind");
exit(EXIT_FAILURE);
}
if (bind(fd_s, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) < 0) {
perror("bind");
exit(EXIT_FAILURE);
}
#endif
#ifdef _WIN32
if (connect(fd_c, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
debug_printf("connect() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
if (connect(fd_s, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) == SOCKET_ERROR) {
debug_printf("connect() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
#else
if (connect(fd_c, (struct sockaddr *)&sin_s, sizeof(struct sockaddr_in)) < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
if (connect(fd_s, (struct sockaddr *)&sin_c, sizeof(struct sockaddr_in)) < 0) {
perror("connect");
exit(EXIT_FAILURE);
}
#endif
#ifdef _WIN32
if ((tid_c = CreateThread(NULL, 0, &handle_packets, (void *)&fd_c, 0, NULL)) == NULL) {
debug_printf("CreateThread() failed with error: %d\n", GetLastError());
exit(EXIT_FAILURE);
}
if ((tid_s = CreateThread(NULL, 0, &handle_packets, (void *)&fd_s, 0, NULL)) == NULL) {
debug_printf("CreateThread() failed with error: %d\n", GetLastError());
exit(EXIT_FAILURE);
}
#else
if ((rc = pthread_create(&tid_c, NULL, &handle_packets, (void *)&fd_c)) != 0) {
debug_printf("pthread_create tid_c: %s\n", strerror(rc));
exit(EXIT_FAILURE);
}
if ((rc = pthread_create(&tid_s, NULL, &handle_packets, (void *)&fd_s)) != 0) {
debug_printf("pthread_create tid_s: %s\n", strerror(rc));
exit(EXIT_FAILURE);
};
#endif
usrsctp_sysctl_set_sctp_ecn_enable(0);
usrsctp_register_address((void *)&fd_c);
usrsctp_register_address((void *)&fd_s);
if ((s_c = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
perror("usrsctp_socket");
exit(EXIT_FAILURE);
}
upcall_meta_client.addr = &fd_c;
upcall_meta_client.sender = 1;
usrsctp_set_upcall(s_c, handle_upcall, &upcall_meta_client);
opt_len = (socklen_t)sizeof(int);
cur_buf_size = 0;
if (usrsctp_getsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &cur_buf_size, &opt_len) < 0) {
perror("usrsctp_getsockopt");
exit(EXIT_FAILURE);
}
debug_printf("Change send socket buffer size from %d ", cur_buf_size);
snd_buf_size = 1<<22; /* 4 MB */
if (usrsctp_setsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &snd_buf_size, sizeof(int)) < 0) {
perror("usrsctp_setsockopt");
exit(EXIT_FAILURE);
}
opt_len = (socklen_t)sizeof(int);
cur_buf_size = 0;
if (usrsctp_getsockopt(s_c, SOL_SOCKET, SO_SNDBUF, &cur_buf_size, &opt_len) < 0) {
perror("usrsctp_getsockopt");
exit(EXIT_FAILURE);
}
debug_printf_clean("to %d.\n", cur_buf_size);
memset(&paddrparams, 0, sizeof(struct sctp_paddrparams));
paddrparams.spp_address.ss_family = AF_CONN;
#ifdef HAVE_SCONN_LEN
paddrparams.spp_address.ss_len = sizeof(struct sockaddr_conn);
#endif
paddrparams.spp_flags = SPP_PMTUD_DISABLE;
paddrparams.spp_pathmtu = 9000;
if (usrsctp_setsockopt(s_c, IPPROTO_SCTP, SCTP_PEER_ADDR_PARAMS, &paddrparams, sizeof(struct sctp_paddrparams)) < 0) {
perror("usrsctp_setsockopt");
exit(EXIT_FAILURE);
}
if ((s_l = usrsctp_socket(AF_CONN, SOCK_STREAM, IPPROTO_SCTP, NULL, NULL, 0, NULL)) == NULL) {
perror("usrsctp_socket");
exit(EXIT_FAILURE);
}
opt_len = (socklen_t)sizeof(int);
cur_buf_size = 0;
if (usrsctp_getsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &cur_buf_size, &opt_len) < 0) {
perror("usrsctp_getsockopt");
exit(EXIT_FAILURE);
}
debug_printf("Change receive socket buffer size from %d ", cur_buf_size);
rcv_buf_size = 1<<16; /* 64 KB */
if (usrsctp_setsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &rcv_buf_size, sizeof(int)) < 0) {
perror("usrsctp_setsockopt");
exit(EXIT_FAILURE);
}
opt_len = (socklen_t)sizeof(int);
cur_buf_size = 0;
if (usrsctp_getsockopt(s_l, SOL_SOCKET, SO_RCVBUF, &cur_buf_size, &opt_len) < 0) {
perror("usrsctp_getsockopt");
exit(EXIT_FAILURE);
}
debug_printf_clean("to %d.\n", cur_buf_size);
on = 1;
if (usrsctp_setsockopt(s_l, IPPROTO_SCTP, SCTP_RECVRCVINFO, &on, sizeof(int)) < 0) {
perror("usrsctp_setsockopt");
exit(EXIT_FAILURE);
}
/* Bind the client side. */
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(5001);
sconn.sconn_addr = &fd_c;
if (usrsctp_bind(s_c, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_bind");
exit(EXIT_FAILURE);
}
/* Bind the server side. */
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(5001);
sconn.sconn_addr = &fd_s;
if (usrsctp_bind(s_l, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_bind");
exit(EXIT_FAILURE);
}
/* Make server side passive... */
if (usrsctp_listen(s_l, 1) < 0) {
perror("usrsctp_listen");
exit(EXIT_FAILURE);
}
/* Initiate the handshake */
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(5001);
sconn.sconn_addr = &fd_c;
if (usrsctp_connect(s_c, (struct sockaddr *)&sconn, sizeof(struct sockaddr_conn)) < 0) {
perror("usrsctp_connect");
exit(EXIT_FAILURE);
}
if ((s_s = usrsctp_accept(s_l, NULL, NULL)) == NULL) {
perror("usrsctp_accept");
exit(EXIT_FAILURE);
}
upcall_meta_server.addr = &fd_s;
upcall_meta_server.sender = 0;
usrsctp_set_upcall(s_s, handle_upcall, &upcall_meta_server);
usrsctp_close(s_l);
print_addresses(s_s);
if ((line = malloc(LINE_LENGTH)) == NULL) {
exit(EXIT_FAILURE);
}
memset(line, 'A', LINE_LENGTH);
sndinfo.snd_sid = 1;
sndinfo.snd_ppid = htonl(DISCARD_PPID);
sndinfo.snd_context = 0;
sndinfo.snd_assoc_id = 0;
for (i = 0; i < NUMBER_OF_STEPS; i++) {
if (i % 2) {
sndinfo.snd_flags = SCTP_UNORDERED;
} else {
sndinfo.snd_flags = 0;
}
for (j = 0; j < 2; j++) {
/* Send a 1 MB message */
sendv_retries_left = 120;
debug_printf("usrscp_sendv - step %d - call %d flags %x\n", i, j + 1, sndinfo.snd_flags);
while (usrsctp_sendv(s_c, line, LINE_LENGTH, NULL, 0, (void *)&sndinfo,
(socklen_t)sizeof(struct sctp_sndinfo), SCTP_SENDV_SNDINFO, 0) < 0) {
debug_printf("usrsctp_sendv - errno: %d - %s\n", errno, strerror(errno));
if (errno != EWOULDBLOCK || !sendv_retries_left) {
exit(EXIT_FAILURE);
}
sendv_retries_left--;
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
}
debug_printf("Sending done, sleeping\n");
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
free(line);
usrsctp_shutdown(s_c, SHUT_WR);
while (usrsctp_finish() != 0) {
debug_printf("Waiting for usrsctp_finish()\n");
#ifdef _WIN32
Sleep(1000);
#else
sleep(1);
#endif
}
#ifdef _WIN32
TerminateThread(tid_c, 0);
WaitForSingleObject(tid_c, INFINITE);
TerminateThread(tid_s, 0);
WaitForSingleObject(tid_s, INFINITE);
if (closesocket(fd_c) == SOCKET_ERROR) {
debug_printf("closesocket() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
if (closesocket(fd_s) == SOCKET_ERROR) {
debug_printf("closesocket() failed with error: %d\n", WSAGetLastError());
exit(EXIT_FAILURE);
}
WSACleanup();
#else
pthread_cancel(tid_c);
pthread_join(tid_c, NULL);
pthread_cancel(tid_s);
pthread_join(tid_s, NULL);
if (close(fd_c) < 0) {
perror("close");
exit(EXIT_FAILURE);
}
if (close(fd_s) < 0) {
perror("close");
exit(EXIT_FAILURE);
}
#endif
return (0);
}
Server : Apache/2.4.41 (Ubuntu)