98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
.\" Copyright (c) 1986 The Regents of the University of California.
|
|
.\" 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. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
|
|
.\"
|
|
.\" from: @(#)ustreamread.c 6.5 (Berkeley) 4/17/91
|
|
.\" $Id: ustreamread.c,v 1.2 1993/08/01 18:23:24 mycroft Exp $
|
|
.\"
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
#include <stdio.h>
|
|
|
|
#define NAME "socket"
|
|
|
|
/*
|
|
* This program creates a socket in the UNIX domain and binds a name to it.
|
|
* After printing the socket's name it begins a loop. Each time through the
|
|
* loop it accepts a connection and prints out messages from it. When the
|
|
* connection breaks, or a termination message comes through, the program
|
|
* accepts a new connection.
|
|
*/
|
|
main()
|
|
{
|
|
int sock, msgsock, rval;
|
|
struct sockaddr_un server;
|
|
char buf[1024];
|
|
|
|
/* Create socket */
|
|
sock = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
if (sock < 0) {
|
|
perror("opening stream socket");
|
|
exit(1);
|
|
}
|
|
/* Name socket using file system name */
|
|
server.sun_family = AF_UNIX;
|
|
strcpy(server.sun_path, NAME);
|
|
if (bind(sock, &server, sizeof(struct sockaddr_un))) {
|
|
perror("binding stream socket");
|
|
exit(1);
|
|
}
|
|
printf("Socket has name %s\en", server.sun_path);
|
|
/* Start accepting connections */
|
|
listen(sock, 5);
|
|
for (;;) {
|
|
msgsock = accept(sock, 0, 0);
|
|
if (msgsock == -1)
|
|
perror("accept");
|
|
else do {
|
|
bzero(buf, sizeof(buf));
|
|
if ((rval = read(msgsock, buf, 1024)) < 0)
|
|
perror("reading stream message");
|
|
else if (rval == 0)
|
|
printf("Ending connection\en");
|
|
else
|
|
printf("-->%s\en", buf);
|
|
} while (rval > 0);
|
|
close(msgsock);
|
|
}
|
|
/*
|
|
* The following statements are not executed, because they follow an
|
|
* infinite loop. However, most ordinary programs will not run
|
|
* forever. In the UNIX domain it is necessary to tell the file
|
|
* system that one is through using NAME. In most programs one uses
|
|
* the call unlink() as below. Since the user will have to kill this
|
|
* program, it will be necessary to remove the name by a command from
|
|
* the shell.
|
|
*/
|
|
close(sock);
|
|
unlink(NAME);
|
|
}
|