#35051: HEAD Responses Drop Headers
---------------------------------+------------------------------------
Reporter: Paul Bailey | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 5.0
Severity: Release blocker | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
---------------------------------+------------------------------------
Changes (by Natalia Bidart):
* cc: Sarah Boyce, Jannik Schürg (added)
* severity: Normal => Release blocker
* stage: Unreviewed => Accepted
Comment:
I did some research on the topic and from [https://www.rfc-
editor.org/rfc/rfc9110.html#name-content-length the corresponding RFC] it
seems that this report is valid and should be accepted:
> A server MAY send a Content-Length header field in a response to a HEAD
request (Section 9.3.2); a server MUST NOT send Content-Length in such a
response unless its field value equals the decimal number of octets that
would have been sent in the content of a response if the same request had
used the GET method.
The removal of the `Content-Length` seems to be located in this code:
{{{#!diff
diff --git a/django/core/servers/basehttp.py
b/django/core/servers/basehttp.py
index 6afe17cec4..e327974708 100644
--- a/django/core/servers/basehttp.py
+++ b/django/core/servers/basehttp.py
@@ -131,11 +131,6 @@ class ServerHandler(simple_server.ServerHandler):
def cleanup_headers(self):
super().cleanup_headers()
- if (
- self.environ["REQUEST_METHOD"] == "HEAD"
- and "Content-Length" in self.headers
- ):
- del self.headers["Content-Length"]
# HTTP/1.1 requires support for persistent connections. Send
'close' if
# the content length is unknown to prevent clients from reusing
the
# connection.
}}}
This code was added while fixing ticket #28054, and while it's correct not
to return the body of the response, it seems that the `Content-Length`
should be kept.
Regression in 8acc433e415cd771f69dfe84e57878a83641e78b
--
Ticket URL: <https://code.djangoproject.com/ticket/35051#comment:1>
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