tcpconnect.c revision 136337 
1/*-
2 * Copyright (c) 2004 Robert N. M. Watson
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 * $FreeBSD: head/tools/regression/netinet/tcpconnect/tcpconnect.c 136337 2004-10-09 20:58:28Z rwatson $
27 */
28
29#include <sys/types.h>
30#include <sys/socket.h>
31
32#include <netinet/in.h>
33
34#include <arpa/inet.h>
35
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <unistd.h>
40
41static void
42usage(volid)
43{
44
45	fprintf(stderr, "tcpconnect server port\n");
46	fprintf(stderr, "tcpconnect client ip port count\n");
47	exit(-1);
48}
49
50static void
51tcpconnect_server(int argc, char *argv[])
52{
53	int listen_sock, accept_sock;
54	struct sockaddr_in sin;
55	char *dummy;
56	long port;
57
58	if (argc != 1)
59		usage();
60
61	bzero(&sin, sizeof(sin));
62	sin.sin_len = sizeof(sin);
63	sin.sin_family = AF_INET;
64	sin.sin_addr.s_addr = htonl(INADDR_ANY);
65
66	port = strtoul(argv[0], &dummy, 10);
67	if (port < 1 || port > 65535 || *dummy != '\0')
68		usage();
69	sin.sin_port = htons(port);
70
71	listen_sock = socket(PF_INET, SOCK_STREAM, 0);
72	if (listen_sock == -1) {
73		perror("socket");
74		exit(-1);
75	}
76
77	if (bind(listen_sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
78		perror("bind");
79		exit(-1);
80	}
81
82	if (listen(listen_sock, -1) == -1) {
83		perror("listen");
84		exit(1);
85	}
86
87	while (1) {
88		accept_sock = accept(listen_sock, NULL, NULL);
89		close(accept_sock);
90	}
91}
92
93static void
94tcpconnect_client(int argc, char *argv[])
95{
96	struct sockaddr_in sin;
97	long count, i, port;
98	char *dummy;
99	int sock;
100
101	if (argc != 3)
102		usage();
103
104	bzero(&sin, sizeof(sin));
105	sin.sin_len = sizeof(sin);
106	sin.sin_family = AF_INET;
107	if (inet_aton(argv[0], &sin.sin_addr) == 0) {
108		perror(argv[0]);
109		exit(-1);
110	}
111
112	port = strtoul(argv[1], &dummy, 10);
113	if (port < 1 || port > 65535 || *dummy != '\0')
114		usage();
115	sin.sin_port = htons(port);
116
117	count = strtoul(argv[2], &dummy, 10);
118	if (count < 1 || count > 100000 || *dummy != '\0')
119		usage();
120
121	for (i = 0; i < count; i++) {
122		sock = socket(PF_INET, SOCK_STREAM, 0);
123		if (sock == -1) {
124			perror("socket");
125			exit(-1);
126		}
127
128		if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) {
129			perror("connect");
130			exit(-1);
131		}
132
133		close(sock);
134	}
135}
136
137int
138main(int argc, char *argv[])
139{
140
141	if (argc < 2)
142		usage();
143
144	if (strcmp(argv[1], "server") == 0)
145		tcpconnect_server(argc - 2, argv + 2);
146	else if (strcmp(argv[1], "client") == 0)
147		tcpconnect_client(argc - 2, argv + 2);
148	else
149		usage();
150
151	exit(0);
152}
153