/*
 * server.c - main
 */
#include <stdio.h>
#include "tcplib.h"
#define ECHOPORT        2500       /* a non-privilege port so all can use */
#define MAX             1024

int main(int argc,char *argv[])
{
    int s, t;
    char buf[MAX];
    int size;

    s = socketServer(ECHOPORT);
    while (1)
    {
	if (s > 0)
	    t = acceptConn(s);
	else
	{
	    fprintf(stderr," socket error\n");
	    exit(1);
	}
	if (t > 0)
	{
	    if ((size = read(t, buf, MAX)) < 0)
	    {
		fprintf(stderr," read error\n");
		exit(3);
	    }
	    if (write(t, buf, size) < 0)
	    {
		fprintf(stderr," write error\n");
		exit(4);
	    }
	}
	else
	{
	    fprintf(stderr," connection error\n");
	    exit(2);
	}
	close(t);
    } /* while(1) */
    close(s);
    return 0;
}