Pull replication confuses mochiweb keep-alive
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                 Key: COUCHDB-730
                 URL: https://issues.apache.org/jira/browse/COUCHDB-730
             Project: CouchDB
          Issue Type: Bug
          Components: Replication
    Affects Versions: 0.11, 0.10.1
            Reporter: Randall Leeds
         Attachments: replication-keepalive.patch

MochiWeb closes a request connection if the headers indicate the presence of a body with non-zero length but the body is never read by the application. Couch sends a body with the atom "true" in a POST to _ensure_full_commit before saving replication checkpoints, but a remote Couch will not read this body. As a result, MochiWeb closes the request and all pipelined requests for this host must be retried by couch_rep_httpc / ibrowse.

I don't know if the body = true was a holdover from a quirk with an older MochiWeb, lhttpc (didn't couch used to use this?) or something else, but simply removing it does the trick.

Patch attached.

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