Re[6]: [clisp-list] socket-connect's timeout

[Arseny S. <am...@ic...>]

Hello Todd,

Tuesday, May 28, 2002, 1:41:21 AM, you wrote:

>> Todd> Correct me if I'm wrong, but using socket-connect with :timeout 0 will
>> Todd> (virtually) always signal an error, since you'll never get connected
>> Todd> instantly.  (Perhaps you would on loopback.)  That is not what I want.
>> Yes, you're right. But socket-wait doesn't return an error - it polls (and
>> it's convenient). What if we'll have analog of socket-wait but for client
>> side - call it, say connect-wait or wait-connect or client-wait... It will
>> turn blocking off, starts connecting (if connection wasn't started yet),
>> waits checking whether connection ready and returns nil or t depending on
>> result. Then socket-connect (when called) checks the status, turns on the
>> blocking and signals an error or returns stream in full harmony with Lisp
>> spirit balancing Client and Server sides of Connection... How do you
>> like it ?

Todd> Well, I'm not very clear on how your proposal would work.  What would
Todd> you pass to SOCKET-CONNECT to indicate that you want to use whatever
Todd> it is you get from CLIENT-WAIT?
You're right again. Then we need a CLIENT-SOCKET datatype analogous to
SERVER-SOCKET and initializer for it (taking port and host parameters).
Then initializer starts connection, CLIENT-WAIT waits or polls and
CLIENT-CONNECT creates the stream or throws an error.

Todd> What about the idea of having a SOCKET-CONNECT% didn't you like?
Think about it as about your half-connected streams splitted into
half-connected part (CLIENT-SOCKET) and connected SOCKET-STREAM.
That's just in more agreement with things existing before (as far I can
see).

Todd> I don't suppose it makes sense to re-suggest the stuff in:
Todd> http://www.geocrawler.com/archives/3/1124/2002/1/100/7517822/ does it?
I think those people who don't want to know about blocking, UDP
sockets, ioctl etc have right to it. So let advanced interface exists,
but if it hurts basic interface - maybe make it separate from SOCKET: ?

-- 
Best regards,
 Arseny                            mailto:am...@ic...