[issue29375] httplib: wrong Host header when connecting to IPv6 link-local address

2017-01-26 Thread Jonathan Guthrie 

Jonathan Guthrie added the comment:

Yes, it is more closely related to Issue 23448.  My search for related issues 
apparently wasn't exhaustive enough.

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[issue29375] httplib: wrong Host header when connecting to IPv6 link-local address

2017-01-25 Thread Martin Panter 

Martin Panter added the comment:

More closely related: Issue 23448, about the same thing with urllib, which adds 
the Host value itself. Any solution should be shared between both modules.

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[issue29375] httplib: wrong Host header when connecting to IPv6 link-local address

2017-01-25 Thread Gregory P. Smith 

Changes by Gregory P. Smith :


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[issue29375] httplib: wrong Host header when connecting to IPv6 link-local address

2017-01-25 Thread Martin Panter 

Changes by Martin Panter :


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components: +Library (Lib)
stage:  -> needs patch
versions: +Python 3.6, Python 3.7

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[issue29375] httplib: wrong Host header when connecting to IPv6 link-local address

2017-01-25 Thread Jonathan Guthrie 

New submission from Jonathan Guthrie:

This is related to issue 5111.

An IPv6 link-local address must include a scope specifier as part of the 
address passed to the HTTPConnection or HTTPSConnection constructor, that scope 
specifier is not being stripped from the address passed in the HTTP 1.1 Host: 
header line.

So, suppose I was attempting to connect to an HTTP server on 
fe80::8aae:1dff:fea4:29c8.  That's a link-local address, so I must give the 
scope specifier, which is the interface I can use to connect to that address.  
So, the address I would pass to the HTTPConnection constructor might look like 
"fe80::8aae:1dff:fea4:29c8%eth0".  The appropriate Host line in the HTTP 
request would be "Host: [fe80::8aae:1dff:fea4:29c8]" but it is actually "Host: 
[fe80::8aae:1dff:fea4:29c8%eth0]"

Compliant HTTP servers reject requests including this line as malformed.

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messages: 286276
nosy: JonathanGuthrie
priority: normal
severity: normal
status: open
title: httplib: wrong Host header when connecting to IPv6 link-local address
type: behavior
versions: Python 2.7, Python 3.5

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