Programming

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <time.h>
#include <string.h>
#include <sys/wait.h>

#define BSZ 256
#define SRVPORT 81
#define MAXLISTEN 5

void handleconnect(int sck) {
int sz = 0;
char buf[BSZ];

                   if (sck < 0) {perror("socket descriptor invalid"); exit(1);}
                   while ((sz = recv(sck,buf,BSZ,0)) > 0) {
                         printf("\nRead %d bytes at epochtime %d = %s in child: %d\n\n",sz,time(NULL),buf,getpid());
                   }
                   printf("Client disconnected.. %d exiting.\n",getpid());
                   exit(0);
}

int rettcpsrvsock(int portno) {
int fd;
struct sockaddr_in srv;
                      
                       bzero(&srv,sizeof(srv));
                       if ( (fd = socket(AF_INET,SOCK_STREAM,0)) <= 0) {perror("socket()"); return -1;}
                 
                       srv.sin_addr.s_addr = INADDR_ANY;
                       srv.sin_family = AF_INET;
                       srv.sin_port = htons(portno);
                       bind(fd,(struct sockaddr *)&srv,sizeof(srv));
                       listen(fd,MAXLISTEN);
                       return fd;
}

int main(void) {
int sz, csck, lsck;
pid_t foop;
struct sockaddr_in cli;


                          if ( (lsck = rettcpsrvsock(SRVPORT)) < 0) {perror("rettcpsrvsock()"); return 1;}
                          sz =  sizeof(cli);
 
                          while (1) {
                                    if ( (csck = accept(lsck,&cli,&sz)) < 0) {perror("accept()"); return 1;}
                                    if (fork() == 0) {handleconnect(csck);}
                                   /*edit*/ close(csck);
                                    if ( (foop = waitpid(-1,NULL,WNOHANG)) > 0) {printf("Reaped child: %d.\n",foop);}
                          }
return 1; /*not reached*/
}