Bugs item #1593751, was opened at 2006-11-09 16:04
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Guido van Rossum (gvanrossum)
Assigned to: Nobody/Anonymous (nobody)
Summary: poor urllib error handling
Initial Comment:
I set up a simple server that returns an empty response.
>>> from socket import *
>>> s = socket()
>>> s.bind(("", 9999))
>>> while 1: x, c = s.accept(); print c; x.recv(1000);
x.close()
...
Pointing urllib at this gives a traceback:
Python 2.6a0 (trunk:52099M, Oct 3 2006, 09:59:17)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> import urllib
>>> urllib.urlopen('http://localhost:9999/')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/guido/p/Lib/urllib.py", line 82, in urlopen
return opener.open(url)
File "/home/guido/p/Lib/urllib.py", line 190, in open
return getattr(self, name)(url)
File "/home/guido/p/Lib/urllib.py", line 334, in
open_http
return self.http_error(url, fp, errcode, errmsg,
headers)
File "/home/guido/p/Lib/urllib.py", line 351, in
http_error
return self.http_error_default(url, fp, errcode,
errmsg, headers)
File "/home/guido/p/Lib/urllib.py", line 608, in
http_error_default
return addinfourl(fp, headers, "http:" + url)
File "/home/guido/p/Lib/urllib.py", line 951, in __init__
addbase.__init__(self, fp)
File "/home/guido/p/Lib/urllib.py", line 898, in __init__
self.read = self.fp.read
AttributeError: 'NoneType' object has no attribute 'read'
>>>
I can repeat this with 2.2.3 and 2.4.3 as well (don't
have 2.3 around for testing).
The direct cause of the problem is that h.getfile() on
line 329 of urllib.py (in head of trunk) returns None.
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