recvall function in C

[Materialised]

Hi,

Does anyone have a recvall() function in C to correspond with the
sendall() function I define below?

int
sendall(int s, char *buf, int *len)
{
int total = 0;
//how many bytes we have sent
int bytesleft = *len;
//how many we have left to send
int n;

while (total < *len) {
n = send(s, buf + total, bytesleft, 0);
if (n == -1) {
break;
}
total += n;
bytesleft -= n;
}
*len = total;
//return number actually sent here
return n == -1 ? -1 : 0;
//return -1 on failure, 0 on success
}
--
------
Materialised

perl -e 'printf "%silto%c%sck%ccodegurus%corg%c", "ma", 58, "mi", 64,
46, 10;'

[Paul E. Black]

Materialised <Materialised@privacy.net> writes:
Does anyone have a recvall() function in C to correspond with the sendall() function I define below? int sendall(int s, char *buf, int *len) { int total = 0; //how many bytes we have sent int bytesleft = *len; //how many we have left to send int n; while (total < *len) { n = send(s, buf + total, bytesleft, 0); if (n == -1) { break; } total += n; bytesleft -= n; } *len = total; //return number actually sent here return n == -1 ? -1 : 0; //return -1 on failure, 0 on success }

If the length is 0 (*len is null initially), n is undefined.

How would a recvall() know when the transmission is done?

-paul-
--
Paul E. Black (p.black@acm.org)