"Brandon S. Allbery KF8NH"
On 2009 Feb 26, at 16:45, Johan Tibell wrote:
definition of `recv` would look like. My current thinking is that it would mimic what C/Python/Java does and return a zero length ByteString when EOF is reached.
Ew. Isn't this what Maybe is for?
Anyway, the reason recv doesn't return 0 is that if you have a datagram socket, a zero-length recv is valid and doesn't mean EOF.
My man page says a retval of 0 means that "the peer has performed an orderly shutdown", which, in the UDP case, means that it has send a complete datagram... no mention of EOF. A true EOF in the sense of "no more data will be received" would mean unbinding the socket. -- (c) this sig last receiving data processing entity. Inspect headers for copyright history. All rights reserved. Copying, hiring, renting, performance and/or quoting of this signature prohibited.