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/*
dbench version 1
Copyright (C) Andrew Tridgell 1999
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "dbench.h"
char *tcp_options = TCP_OPTIONS;
static void server(int fd)
{
char buf[70000];
unsigned *ibuf = (unsigned *)buf;
int n;
signal(SIGPIPE, SIG_IGN);
printf("^"); fflush(stdout);
while (1) {
if (read_sock(fd, buf, 4) != 4) break;
n = ntohl(ibuf[0]);
if (n+4 >= sizeof(buf)) {
printf("overflow in server!\n");
exit(1);
}
if (read_sock(fd, buf+4, n) != n) break;
n = ntohl(ibuf[1]);
ibuf[0] = htonl(n);
if (write_sock(fd, buf, n+4) != n+4) break;
}
exit(0);
}
static void listener(void)
{
int sock;
sock = open_socket_in(SOCK_STREAM, TCP_PORT, INADDR_ANY);
if (listen(sock, 20) == -1) {
fprintf(stderr,"listen failed\n");
exit(1);
}
printf("waiting for connections\n");
signal(SIGCHLD, SIG_IGN);
while (1) {
struct sockaddr addr;
int in_addrlen = sizeof(addr);
int fd;
while (waitpid((pid_t)-1,(int *)NULL, WNOHANG) > 0) ;
fd = accept(sock,&addr,&in_addrlen);
if (fd != -1) {
if (fork() == 0) server(fd);
close(fd);
}
}
}
static void usage(void)
{
printf("usage: tbench_srv [OPTIONS]\n"
"options:\n"
" -t options set socket options\n");
exit(1);
}
static void process_opts(int argc, char **argv)
{
int c;
while ((c = getopt(argc, argv, "t:")) != -1) {
switch (c) {
case 't':
tcp_options = optarg;
break;
default:
usage();
}
}
}
int main(int argc, char *argv[])
{
process_opts(argc, argv);
listener();
return 0;
}
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