socket.h>
#include
#include
#include
#include
#define MAXLINE...];
again:
while ((n = read(sockfd, buf, MAXLINE)) > 0) {
write(sockfd, buf, n);
}..., NULL, NULL, NULL);
if (FD_ISSET(sockfd, &rset)) {
if ((n = read(sockfd, buf, MAXLINE...];
while(1) {
len = clilen;
n = recvfrom(sockfd, mesg, MAXLINE, 0, pcliaddr, &len...], recvline[MAXLINE + 1];
while (fgets(sendline, MAXLINE, fp) !