HTTP HEAD timeout

[stwissel]

I'm using nginx 1.7.7 as a reverse proxy in front of a Apache CouchDB.
Access via browser to CouchDB data works like a charm. However I have
trouble with replication (which runs via HTTPs). This is what I found out:

CouchDB would issue a HTTP HEAD first and then perform GET/POST as per its
algorythm. However the HEAD request times out. I then tried to replicate
that behavior using CURL. This is what I found:

curl -v --head http://myserver/couch

- works as expected

curl -v -X HEAD http://myserver/couch

- times out. Now I suspect that CouchDB uses a call similar to the later and
thus runs into the timeout.

I verified: the timeout also happens when I do a -X HEAD to a base address
(one that is not redirected to CouchDB), so I need to change something (can
I?) on the nginx side. 

What are my options?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,255845,255845#msg-255845