Socket::irecv / isend show faulty behavior when bufsize > MAX_INT

[blootsvoets]

The status of C ::send and ::recv is read as an int, but if the buffer size is larger than that, it will deduce there is an error when there is not. In pseudo-code:

char *buf, long long int size;
int status = ::send(buf, size);
if (status < 0)
   report_error();

However, if size is larger than MAX_INT and this is successfully returned by ::send, status will be smaller than zero through casting.

I think its reasonable to assume that the input size should be an int, or that ::send will always return less than MAX_INT, but maybe an explicit comment about these assumptions would be good.