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#!/bin/sh
# Based on https://gist.github.com/zonque/7d03568eab14a2bb57cb by
# Daniel Mack github@zonque.org
# Modified version of sctp.sh by Michael Tuexen <tuexen@freebsd.org>:
# * Use loopback as the address of the server on both side initialized using
# htonl(INADDR_LOOPBACK).
# * Negotiate only 1 stream in both directions since only one stream is used.
# * Don't use initmsg.sinit_max_instreams as an argument in listen(), which
# does not make sense.
# Use an arbitrary positive integer, 5 in this case.
# * Initialize flags before calling sctp_recvmsg().
# "panic: Don't own TCB lock" seen:
# https://people.freebsd.org/~pho/stress/log/sctp2.txt
# "panic: soclose: SS_NOFDREF on enter" seen:
# https://people.freebsd.org/~pho/stress/log/sctp2-2.txt
kldstat -v | grep -q sctp || kldload sctp.ko
cat > /tmp/sctp2.c <<EOF
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <libgen.h>
#include <netinet/in.h>
#include <netinet/sctp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static int my_port_num;
static void
die(const char *s)
{
perror(s);
exit(1);
}
static void
server(void)
{
struct sctp_sndrcvinfo sndrcvinfo;
struct sockaddr_in servaddr = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
.sin_port = htons(my_port_num),
};
struct sctp_initmsg initmsg = {
.sinit_num_ostreams = 1,
.sinit_max_instreams = 1,
.sinit_max_attempts = 4,
};
int listen_fd, conn_fd, flags, ret, in;
listen_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (listen_fd < 0)
die("socket");
ret = bind(listen_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
if (ret < 0)
die("bind");
ret = setsockopt(listen_fd, IPPROTO_SCTP, SCTP_INITMSG, &initmsg,
sizeof(initmsg));
if (ret < 0)
die("setsockopt");
ret = listen(listen_fd, 5);
if (ret < 0)
die("listen");
for (;;) {
char buffer[1024];
printf("Waiting for connection\n");
fflush(stdout);
conn_fd = accept(listen_fd, (struct sockaddr *) NULL, NULL);
if(conn_fd < 0)
die("accept()");
printf("New client connected\n");
fflush(stdout);
flags = 0;
in = sctp_recvmsg(conn_fd, buffer, sizeof(buffer), NULL, 0,
&sndrcvinfo, &flags);
if (in > 0) {
printf("Received data: %s\n", buffer);
fflush(stdout);
}
close(conn_fd);
}
}
static void
client(void)
{
struct sockaddr_in servaddr = {
.sin_family = AF_INET,
.sin_port = htons(my_port_num),
.sin_addr.s_addr = htonl(INADDR_LOOPBACK),
};
int conn_fd, ret;
const char *msg = "Hello, Server!";
conn_fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (conn_fd < 0)
die("socket()");
ret = connect(conn_fd, (struct sockaddr *) &servaddr, sizeof(servaddr));
if (ret < 0)
die("connect()");
ret = sctp_sendmsg(conn_fd, (void *) msg, strlen(msg) + 1, NULL, 0, 0, 0, 0, 0, 0 );
if (ret < 0)
die("sctp_sendmsg");
close(conn_fd);
}
int
main(int argc __unused, char *argv[])
{
my_port_num = atoi(argv[1]);
if (strstr(basename(argv[0]), "server"))
server();
else
client();
return (0);
}
EOF
cc -o /tmp/server -Wall -Wextra -O2 /tmp/sctp2.c || exit
ln -sf /tmp/server /tmp/client
parallel=100
for i in `jot $parallel 62324`; do
/tmp/server $i > /dev/null &
done
(cd ../testcases/swap; ./swap -t 1m -i 20 -l 100) &
sleep 2
start=`date +%s`
while [ $((`date +%s` - start)) -lt 60 ]; do
pids=
for i in `jot 50`; do
for j in `jot $parallel 62324`; do
/tmp/client $j &
pids="$pids $!"
done
done
for i in $pids; do
wait $i
done
done
pkill server
wait
while pkill swap; do :; done
wait
rm -f /tmp/sctp2.c /tmp/server /tmp/client
exit 0
|
