body_too_large error for external processes, when body is 3MB
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Key: COUCHDB-822
URL: https://issues.apache.org/jira/browse/COUCHDB-822
Project: CouchDB
Issue Type: Bug
Components: HTTP Interface
Affects Versions: 0.11
Environment: CouchDB 0.11 on Ubuntu 10.04,
Reporter: Erik Edin
Priority: Minor
I have a photo which is around 3 MB that I'm trying to PUT to an external
process on the CouchDB database. The external process is called "_upload".
I get an uncaught error "{exit,{body_too_large,content_length}}" in the logs
when trying this. Smaller photos (around 60 kB) seem to work just fine.
This just happens with external processes. I can upload the photo as an
attachment directly to a document, with no problems.
The error is similar to an earlier bug in the mochiweb library that was fixed
around Feb 2009, where mochiweb never used the "max_document_size" setting that
was provided when calling mochiweb_request:recv_body.
I believe, supported by the stack trace below, that the cause for this bug is
that in couch_httpd_external:json_req_obj the function
mochiweb_request:recv_body/0 is called, which uses the mochiweb default value
on MaxBody, which is 1 MB.
I think that couch_httpd_external:json_req_obj should call
mochiweb_request:recv_body/1 instead, with the "max_document_size" setting as
the argument.
Unfortunately I was unable to patch it myself directly, probably due to my
rusty Erlang skills.
Here are the error logs from one of my attempts:
[Thu, 08 Jul 2010 18:49:53 GMT] [debug] [<0.3738.0>] 'PUT'
/pillowfight/_upload/6b1908c352129ddda396fa69ac003d11 {1,1}
Headers: [{'Accept',"*/*"},
{'Content-Length',"3093976"},
{'Content-Type',"image/jpg"},
{"Expect","100-continue"},
{'Host',"localhost:5984"},
{'User-Agent',"curl/7.19.7 (i486-pc-linux-gnu) libcurl/7.19.7
OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15"}]
[Thu, 08 Jul 2010 18:49:53 GMT] [debug] [<0.3738.0>] OAuth Params: []
[Thu, 08 Jul 2010 18:49:53 GMT] [error] [<0.3738.0>] Uncaught error in HTTP
request: {exit,{body_too_large,content_length}}
[Thu, 08 Jul 2010 18:49:53 GMT] [info] [<0.3738.0>] Stacktrace:
[{mochiweb_request,stream_body,5},
{mochiweb_request,recv_body,2},
{couch_httpd_external,json_req_obj,3},
{couch_httpd_external,process_external_req,3},
{couch_httpd_db,do_db_req,2},
{couch_httpd,handle_request_int,5},
{mochiweb_http,headers,5},
{proc_lib,init_p_do_apply,3}]
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