1 /*-
2 * Copyright (c) 2015 George V. Neville-Neil
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <err.h>
28 #include <errno.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <strings.h>
32 #include <sysexits.h>
33 #include <unistd.h>
34
35 #include <sys/socket.h>
36 #include <sys/types.h>
37 #include <netinet/in.h>
38
39 #define PORT 6969 /* Default port */
40 #define RECV_LIMIT 64 /* When do we move listen to 0? */
41
42 void usage(void);
43
usage()44 void usage()
45 {
46 err(EX_USAGE, "connect [-p port]\n");
47 }
48
main(int argc,char ** argv)49 int main(int argc, char **argv)
50 {
51
52 int ch, cli_sock, count = 0;
53 int port = PORT;
54 struct sockaddr_in remoteaddr;
55
56 while ((ch = getopt(argc, argv, "p:")) != -1) {
57 switch (ch) {
58 case 'p':
59 port = atoi(optarg);
60 break;
61 case 'h':
62 default:
63 usage();
64 }
65 }
66
67 bzero(&remoteaddr, sizeof(remoteaddr));
68 remoteaddr.sin_len = sizeof(remoteaddr);
69 remoteaddr.sin_family = AF_INET;
70 remoteaddr.sin_port = htons(port);
71 remoteaddr.sin_addr.s_addr = INADDR_ANY;
72
73 cli_sock = socket(AF_INET, SOCK_STREAM, 0);
74
75 while ((cli_sock = connect(cli_sock, (struct sockaddr *)&remoteaddr,
76 sizeof(remoteaddr))) >= 0) {
77 count++;
78 close(cli_sock);
79 cli_sock = socket(AF_INET, SOCK_STREAM, 0);
80 }
81
82 printf("Exiting at %d with errno %d\n", count, errno);
83
84 }
85