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#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>
#define NSTRS 3 /* no. of strings */
#define ADDRESS "mysocket" /* addr to connect */
/*
* Strings we send to the client.
*/
char *strs[NSTRS] = {
"This is the first string from the server.\n",
"This is the second string from the server.\n",
"This is the third string from the server.\n"
};
main()
{
char c;
FILE *fp;
int fromlen;
register int i, s, ns, len;
struct sockaddr_un saun, fsaun;
/*
* Get a socket to work with. This socket will
* be in the UNIX domain, and will be a
* stream socket.
*/
if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
perror("server: socket");
exit(1);
}
/*
* Create the address we will be binding to.
*/
saun.sun_family = AF_UNIX;
strcpy(saun.sun_path, ADDRESS);
/*
* Try to bind the address to the socket. We
* unlink the name first so that the bind won't
* fail.
*
* The third argument indicates the "length" of
* the structure, not just the length of the
* socket name.
*/
unlink(ADDRESS);
len = sizeof(saun.sun_family) + strlen(saun.sun_path);
if (bind(s, &saun, len) < 0) {
perror("server: bind");
exit(1);
}
/*
* Listen on the socket.
*/
if (listen(s, 5) < 0) {
perror("server: listen");
exit(1);
}
/*
* Accept connections. When we accept one, ns
* will be connected to the client. fsaun will
* contain the address of the client.
*/
if ((ns = accept(s, &fsaun, &fromlen)) < 0) {
perror("server: accept");
exit(1);
}
/*
* We'll use stdio for reading the socket.
*/
fp = fdopen(ns, "r");
/*
* First we send some strings to the client.
*/
for (i = 0; i < NSTRS; i++)
send(ns, strs[i], strlen(strs[i]), 0);
/*
* Then we read some strings from the client and
* print them out.
*/
for (i = 0; i < NSTRS; i++) {
while ((c = fgetc(fp)) != EOF) {
putchar(c);
if (c == '\n')
break;
}
}
/*
* We can simply use close() to terminate the
* connection, since we're done with both sides.
*/
close(s);
exit(0);
}
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