On 11Nov2015 16:16, Ulli Horlacher <frams...@rus.uni-stuttgart.de> wrote:
I am rewriting a Perl program into Python (2.7).
It must run on Linux and Windows.
With Linux I have no problems, but Windows... :-(
The current show stopper is signal.SIGALRM which is not available on
Windows:
File "fexit.py", line 674, in formdata_post
signal.signal(signal.SIGALRM,timeout_handler)
AttributeError: 'module' object has no attribute 'SIGALRM'
https://docs.python.org/2/library/signal.html
signal.alarm(time) (...) Availability: Unix.
Perl for Windows has had SIGALRM support (or some kind of emulation).
Ok, I have to redesign this part of my code:
def timeout_handler(sig,frame):
raise ValueError("timeout!")
signal.signal(signal.SIGALRM,timeout_handler)
while True:
chunk = fileo.read(bs)
sock.sendall(chunk)
(...)
What is the best practise for a cross platform timeout handler?
I suggest you look at the socket.settimeout function. Avoid SIGALRM altogether.
Then (untested):
import socket
...
socket.settimeout(timeout_in_seconds)
...
while True:
...
chunk = fileo.read(bs)
try:
sock.sendall(chunk)
except socket.timeout as e:
... complain about timeout, reciting "e" in the message ...
Cheers,
Cameron Simpson <c...@zip.com.au>
I think you're confusing "recognizing" and "understanding" with "caring".
The net is cruel, sometimes, but always fair.
- Rick Gordon <ri...@crl.com>
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