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IO timeout in threaded application

According to the "signal" documentation, threads spawned as part of a
multi-threaded application can not receive signals.

I have a daemon which I want to validate email addresses by connecting
to the MX for the domain and sending the EHLO/MAIL/RCPT commands. I
would like to place an upper limit on the amount of time spent doing the
validation. I had expected to be able to schedule an alarm() in a
thread, and use that to interrupt the otherwise blocking read/writes.

What's the easiest way to accomplish that? Should I just subclass
smtplib's SMTP class and override the "connect" function with one that
creates a socket with a timeout?
Jul 18 '05 #1
1 1460
In article <ma************ *************** *******@python. org>,
Gordon Messmer <gm******@real. com> wrote:

What's the easiest way to accomplish that? Should I just subclass
smtplib's SMTP class and override the "connect" function with one that
creates a socket with a timeout?

If you don't mind having the same timeout for every socket, use either
timeoutsocket.p y (or the new functionality in Python 2.3) to set a
global timeout.
Aahz (aa**@pythoncra ft.com) <*> http://www.pythoncraft.com/

This is Python. We don't care much about theory, except where it intersects
with useful practice. --Aahz
Jul 18 '05 #2

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