Patch for login exchange timeout

[Darren Tucker]

Damien Miller wrote:
> Mic Bowman wrote:
> 
>>Here's a quick patch that adds a timeout (value set
>>from the connection timeout config parameter) for
>>identification exchange. 
> 
> I think the idea is ok, but IMO the implementation should do
> select+timeout rather than use signals.

> Also, maybe the timeout for the banner exchange should be
> ConnectionTimeout less the time actually used during the connect phase.

One possible approach would be to have the initial select() wait for 
some data from the server (eg the banner), as per the attached patch.

-- 
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4  37C9 C982 80C7 8FF4 FA69
     Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.
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