https://issues.apache.org/bugzilla/show_bug.cgi?id=50363
Summary: Chunked encoding is applied 304 responses with no
bodies
Product: Tomcat Connectors
Version: 1.2.30
Platform: PC
Status: NEW
Severity: normal
Priority: P2
Component: isapi
AssignedTo: [email protected]
ReportedBy: [email protected]
When the ISAPI redirector processes a response to a 304 (or 204/205) response
with chunked encoding enabled, and a Content-Length is not specified, chunked
encoding is applied to the empty body, which created an invalid response.
Under normal operation (e.g. DefaultServlet responses), the closing of the
output buffer writes a Content-Length: 0 to the response, which the AJP
connectors don't try to remove for 304 etc. responses (the HTTP connectors do).
This results in 304 responses with Content-Length: 0 headers, which is valid
(if quirky).
This issue can be reproduced by setting a 304 response status and explicitly
calling response.flushBuffer() to commit the response prior to closing the
output buffer.
The ISAPI Redirector also isn't handling a similar case for HEAD requests.
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