perlplexer & mike,

$sock->sockopt(SO_RCVBUF, $max_recv_buff_sz);

works for me. gr8
where $sock is a IO::Socket::INET object. SO_RCVBUF is defined in Socket.pm.  INET seems to be derived from IO::Socket which derives from Socket. So ideally, one should be able to set the socket buffer size of a socket created using Socket class & its method setsockopt. In my case sockopt<\code> method calls <code>setsockopt internally, by deriving.

Thanks ppl,
Suresh R