#include    "unp.h"##  1 ##src/tcpcliserv/tcpserv01.c##

int##  2 ##src/tcpcliserv/tcpserv01.c##
main(int argc, char **argv)##  3 ##src/tcpcliserv/tcpserv01.c##
{##  4 ##src/tcpcliserv/tcpserv01.c##
    int     listenfd, connfd;##  5 ##src/tcpcliserv/tcpserv01.c##
    pid_t   childpid;##  6 ##src/tcpcliserv/tcpserv01.c##
    socklen_t clilen;##  7 ##src/tcpcliserv/tcpserv01.c##
    struct sockaddr_in cliaddr, servaddr;##  8 ##src/tcpcliserv/tcpserv01.c##

    listenfd = Socket(AF_INET, SOCK_STREAM, 0);##  9 ##src/tcpcliserv/tcpserv01.c##

    bzero(&servaddr, sizeof(servaddr));## 10 ##src/tcpcliserv/tcpserv01.c##
    servaddr.sin_family = AF_INET;## 11 ##src/tcpcliserv/tcpserv01.c##
    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);## 12 ##src/tcpcliserv/tcpserv01.c##
    servaddr.sin_port = htons(SERV_PORT);## 13 ##src/tcpcliserv/tcpserv01.c##

    Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));## 14 ##src/tcpcliserv/tcpserv01.c##

    Listen(listenfd, LISTENQ);## 15 ##src/tcpcliserv/tcpserv01.c##

    for (;;) {## 16 ##src/tcpcliserv/tcpserv01.c##
        clilen = sizeof(cliaddr);## 17 ##src/tcpcliserv/tcpserv01.c##
        connfd = Accept(listenfd, (SA *) &cliaddr, &clilen);## 18 ##src/tcpcliserv/tcpserv01.c##

        if ((childpid = Fork()) == 0) { /* child process */## 19 ##src/tcpcliserv/tcpserv01.c##
            Close(listenfd);    /* close listening socket */## 20 ##src/tcpcliserv/tcpserv01.c##
            str_echo(connfd);   /* process the request */## 21 ##src/tcpcliserv/tcpserv01.c##
            exit(0);## 22 ##src/tcpcliserv/tcpserv01.c##
        }## 23 ##src/tcpcliserv/tcpserv01.c##
        Close(connfd);          /* parent closes connected socket */## 24 ##src/tcpcliserv/tcpserv01.c##
    }## 25 ##src/tcpcliserv/tcpserv01.c##
}## 26 ##src/tcpcliserv/tcpserv01.c##