Linux TCP/IP programming part II

[Giorgos Keramidas]

On Fri, Jun 23, 2000 at 10:21:51PM +0300, The Reverant wrote:
>
> fd_set rfds;
> struct timeval tv;
> int retval;
> 
> conn=accept(sock, (struct sockaddr *) &address, &addrLength)
> FD_ZERO(&rfds);
> FD_SET(conn, &rfds);
> 
> tv.tv_sec = 10;
> tv.tv_usec = 0;
> retval=select(1, &rfds, NULL, NULL, &tv);
> 	if(retval)
> 	cout << "Exoume data!\n";
> 	else
> 	{
> 	cout << "problem! den esteile o allos data mesa sta 10 secs. timeout!\n";
>  	close(conn);
> 	}
> 
> To problima einai oti o,ti kai osa data na steilei o allos host, i select() den
> to katalabainei me tipota, les kai den stelnei tipota o allos. Etsi iparxei
> panta timeout meta apo 10 secs! Ti mporei na ftaei? Iparxei mipos allos tropos
> na ginei i douleia?

Diabase to manpage tis select().  Kai prosoxi sto TI einai to prwto
argument.  Kai meta afou katalabeis giati einai lathos auto pou ekanes,
kane to ejhs:

    fd_set rfds;
    struct timeval tv;
    int retval;

    conn = accept(sock, (struct sockaddr *) &address, &addrLength)
    FD_ZERO(&rfds);
    FD_SET(conn, &rfds);

    tv.tv_sec = 10;
    tv.tv_usec = 0;
    retval = select(conn + 1, &rfds, NULL, NULL, &tv);
    if(retval) {
        printf("data received in first 10 seconds\n");
    } else {
        printf("input timeout after 10 seconds\n");
        close(conn);
    }

Ah nai, kai otan breis xrono, paikse me to indent(1).  Kanei kali
doulitsa otan esu bariesai na grafeis me sugkekrimeno style panta :)

-- 
Giorgos Keramidas, < keramida @ ceid . upatras . gr >
For my public key: finger keramida at ceid.upatras.gr

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