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From "Jens Alfke (Created) (JIRA)" <>
Subject [jira] [Created] (COUCHDB-1403) Multipart upload fails with exception if request body is chunked
Date Mon, 06 Feb 2012 21:16:59 GMT
Multipart upload fails with exception if request body is chunked

                 Key: COUCHDB-1403
             Project: CouchDB
          Issue Type: Bug
          Components: HTTP Interface
    Affects Versions: 1.1.1
         Environment: Mac OS X 10.7.3, Couchbase Single Server 2.0.0dev4 (based on CouchDB
            Reporter: Jens Alfke
            Priority: Minor

CouchDB doesn't correctly parse MIME multipart PUT/POST requests when the HTTP transfer is
chunked. It generates an Erlang exception, and the client sees that the socket was closed

[error] [emulator] Error in process <0.15079.3> with exit value: {badarith,[{couch_httpd_db,'-receive_request_data/2-fun-0-',3},{couch_httpd,read_until,3},{couch_httpd,parse_part_body,1},{couch_httpd,parse_multipart_request,3},{couch_doc,'-doc_from_multi_part_stream/2-fun-1-'...

The source looks like:

receive_request_data(Req) ->
 receive_request_data(Req, couch_httpd:body_length(Req)).
receive_request_data(Req, LenLeft) when LenLeft > 0 ->

Robert Newson commented on the user@ list: "Pretty obvious bug, yes. We're attempting to evaluate
whether the atom 'chunked' is greater than zero."

The obvious workaround -- don't use chunked -- may not be available to clients. This level
of encoding is generally performed by the browser or client HTTP library, and the app level
code may not have control over whether it's performed.

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