bind() error

Why do I keep getting bind() error when attempting to execute this server?
By the way, it's meant to get to integers, calculate sum and return sum to client.
Any help appreciated !

Code:

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#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>

int main (void)
{
  int sd, new_sd, sum;
  struct sockaddr_un serv_addr;

  struct mystruct
  {
    int addend;
    int augend;
  } values;

  void report_fatal_error (char *message);

  sd = socket (AF_UNIX, SOCK_STREAM, 0);

  if (sd == -1)
    report_fatal_error ("Server: Cannot open socket");

  bzero ((char *) &serv_addr, sizeof (serv_addr));

  serv_addr.sun_family = AF_UNIX;

  strcpy (serv_addr.sun_path, "/tmp/mysocket");

  if (bind (sd, (struct sockaddr *) &serv_addr, sizeof (serv_addr)) == -1)
    report_fatal_error ("Server: Binding error in local address");  /* Here is where I get the error */

  listen (sd, 5);

  while (1)
  {
    new_sd = accept (sd, NULL, 0);

    if (new_sd == -1)
      report_fatal_error ("Server: Accept error");

    read (new_sd, &values, sizeof (values));

    sum = values.addend + values.augend;

    printf ("server: %d + %d = %d\n", values.addend, values.augend, sum);

    write (new_sd, &sum, sizeof (sum));

    close (new_sd);
  }
}

void report_fatal_error (char *message)
{
  perror (message);

  exit (1);
}

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PS. Program is not written by me.

What port are you binding on?

What error message is printed by perror()?

Port? I thought AF_UNIX domain didn't use any ports.

Error from perror: "Address is already in use". As if there was another socket using that address. (??)

If your app is not running, try removing this file.
>"/tmp/mysocket"

this is what your prog binds to I believe (not a port, as you pointed out).

Also, you can add this to your server if you want to remove it each time the app starts:

>unlink("/tmp/mysocket");

Removing file "/tmp/mysocket" really helped.
Thank you, Hammer.

Quote:

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Originally posted by PutoAmo
Removing file "/tmp/mysocket" really helped.
Thank you, Hammer.

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Unless you change your program, this file doesn't get deleted automatically....... just thought I should highlight that.