[COUCHDB-1639] doc_to_multi_part_stream does not include headers for attachments

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Fix Version/s: 1.3.1
• Component/s: Database Core, Replication
• Assignee: Unassigned
• Reporter: Christopher Bonhage
• Created: 08/Jan/13 20:34
• Updated: 17/May/13 20:45
• Resolved: 08/Jan/13 21:15

Description

I started a push replication job that contained a document with image attachments and noticed that the replication job was taking far too long, so I dug into the logs and found the culprit:

[Tue, 08 Jan 2013 05:28:45 GMT] [error] [emulator] Error in process <0.22592.0> with exit value: badmatch,{[137,80,78,71],[],[

{couch_httpd,split_header,1}

,

{couch_httpd,'-parse_part_header/1-fun-1-',2}

,

{lists,foldl,3}

,

{couch_httpd,parse_part_header,1}

,

{couch_httpd,parse_multipart_request,3}

,{couch_doc,'doc_from_multi_part_stream/2-fun-1'...

I was able to deduce that the

{[137,80,78,71],[]}

that split_header was encountering while trying to parse_part_header was actually the (partial) body of the attachment! After adding some logging to confirm my suspicions I discovered that CouchDB does not appear to be sending MIME multipart/related headers for attachments (only the application/json for the doc itself) when converting a document to a multipart stream, which is causing the problem.

Issue Links

• duplicates: COUCHDB-1368 multipart/related document body doesn't identify which part is which attachment