Problems with sockets under linux

I've been screwing around with Sockets programming for a little while - just to see what it's like.

Code:

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#include "../unp.h"
#include <time.h>

int main(int argc, char **argv)
{
        int    listenfd, connfd;
        struct sockaddr_in servaddr;
        char    buff[MAXLINE];
        time_t  ticks;

        listenfd = Socket(AF_INET, SOCK_STREAM, 0);

        bzero(&servaddr, sizeof(servaddr));
        servaddr.sin_family = AF_INET; bzero(&servaddr, sizeof(servaddr));
        servaddr.sin_family = AF_INET;
        servaddr.sin_addr.s_addr = hton1(INADDR_ANY);
        servaddr.sin_port = htons(13);

        Bind(listenfd, (SA *) &servaddr, sizeof(servaddr));

        Listen(listenfd, LISTENQ);

        for (;;)
        {
                connfd = Accept (listenfd, (SA *) NULL, NULL);

                ticks = time(NULL);
                snprintf(buff, sizeof(buff), "%.24s\r\n", ctime(&ticks));
                Write(connfd, buff, strlen(buff));

                Close(connfd);
        }
}

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That's the code i'm using for a simple daytime server. Here are the errors that I'm getting:

Quote:

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fatality Server # gcc server.c -o server
In file included from server.c:1:
../unp.h:7:75: config.h: No such file or directory
In file included from server.c:1:
../unp.h:115: error: redefinition of `struct in_pktinfo'
../unp.h:202:36: ../lib/addrinfo.h: No such file or directory
../unp.h:216: error: redefinition of `struct timespec'
../unp.h:296: error: conflicting types for `gai_strerror'
/usr/include/netdb.h:639: error: previous declaration of `gai_strerror'
../unp.h:301: error: conflicting types for `getnameinfo'
/usr/include/netdb.h:648: error: previous declaration of `getnameinfo'
../unp.h:305: error: conflicting types for `gethostname'
/usr/include/unistd.h:783: error: previous declaration of `gethostname'
../unp.h:325: error: conflicting types for `inet_aton'
/usr/include/arpa/inet.h:74: error: previous declaration of `inet_aton'

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Something is wrong withy your headers, your ../unp.h is including files that don't exist. You are also somewhere including a header that trying to define functions already included. Check your headers.

or, only include what's needed... check man or your book (i'm assuming unix net prog)

scrappy - I downloaded the source code for all of the programs included with unix net prog, and took unp.h from it (i didn't want to type it up myself), stuck it in a directory with subdirectories Server and Client each containing the two programs specified in chapter one of unix net prog.

Quote:

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In file included from server.c:1:
../unp.h:7:75: config.h: No such file or directory

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so where is config.h?

if you want to learn socket prgramming i suggest taking a look at Beej's Guide . Its more or less the bible of learning socket programmming under unix.

I figured it out. I had to use autoconf.

Quote:

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Originally Posted by principii

I figured it out. I had to use autoconf.

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can you plz explain how to use autoconf?

Yes, you can read the manual page and the forum rules.

One in particular is not bumping long dead threads.

Another is to show that you at least tried to RTFM
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