serve: don't send any content headers with 304 responses
Fixes HTTP protocol violation introduced in cf5c76017e11. 'hg serve' would show
a stacktrace when loading pages that not had been modified.
There was test coverage for this, but the wrong response headers wasn't shown
and thus not detected.
[ original upstream message ]
--- a/tests/get-with-headers.py Wed Jan 16 00:09:26 2013 +0100
+++ b/tests/get-with-headers.py Tue Jan 15 20:54:57 2013 +0100
@@ -31,6 +31,8 @@
conn.request("GET", '/' + path, None, headers)
response = conn.getresponse()
print response.status, reasons.get(response.reason, response.reason)
+ if show[:1] == ['-']:
+ show = [h for h, v in response.getheaders() if h.lower() not in show]
for h in [h.lower() for h in show]:
if response.getheader(h, None) is not None:
print "%s: %s" % (h, response.getheader(h))