Thread: posix sockets in c

I'm trying to setup a connection between a client and a server using sockets.
I'm doing:

test.h:
---------

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <signal.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ipc.h>
#include <sys/shm.h>

#define MYSOCKET "/tmp/mysocket"
#define LISENQ 20

void error(char *msg)
{
    perror(msg);
    exit(1);
}

server.c:
----------

Code:

#include "test.h"

int main()
{
    struct sockaddr serveraddr, clientaddr;
    int sd, sd_new;
    socklen_t serverlen, clientlen;
    char buf[256];

    sd = socket(AF_UNIX, SOCK_STREAM, 0);
    if (sd < 0)
        error("server socket failure");

    bzero(&serveraddr, sizeof(serveraddr));
    bzero(&clientaddr, sizeof(clientaddr));

    serveraddr.sa_family = AF_UNIX;
    strcpy(serveraddr.sa_data, MYSOCKET);
    serverlen = sizeof(serveraddr.sa_family) + strlen(serveraddr.sa_data);
    clientlen = sizeof(clientaddr.sa_family) + strlen(clientaddr.sa_data);

    unlink(MYSOCKET);

    if (bind(sd, (struct sockaddr *)&serveraddr, serverlen) < 0)
        error("server bind failure");

    if (listen(sd, LISENQ) < 0)
        error("server listen failure");

    for(;;)
    {
        sd_new = accept(sd, (struct sockaddr *)&clientaddr, &clientlen);
        if (sd_new < 0)
            error("server accept failure");

        if (fork() == 0)
        {
            read(sd_new, buf, sizeof(buf));
            
            printf("Got msg: %s", buf);
            
            close(sd_new);
            exit(0);
        }

        close (sd);
    }
    return 0;
}

client:
-------

Code:

#include "test.h"

int main()
{
	struct sockaddr serveraddr;
	int sd;
	socklen_t serverlen;
	char buf[256];
	
	sd = socket(AF_UNIX, SOCK_STREAM, 0);
	if (sd < 0)
		error("client socket failure");

	serveraddr.sa_family = AF_UNIX;
	strcpy(serveraddr.sa_data, MYSOCKET);
	serverlen = sizeof(serveraddr.sa_family) + strlen(serveraddr.sa_data);

	if (connect(sd, (struct sockaddr *)&serveraddr, serverlen) < 0);
        error("client connect failure");

	puts("client connected!");
	
	while(1)
	{
		printf(">> ");
		scanf("%s", &buf);
		write(sd, buf, sizeof(buf));
	}

	close(sd);

	return 0;
}

- server runs and waits
- client runs and stops with message : client connect failure: Success
and crashes the server with msg: Got msg: �Ҋ�server accept failure: Bad file descriptor

need some advice please