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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COUCHDB-1697) if-none-match header causes 500 internal server error on CORS requests
Date Tue, 15 Apr 2014 20:50:16 GMT

    [ https://issues.apache.org/jira/browse/COUCHDB-1697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13970045#comment-13970045
] 

ASF subversion and git services commented on COUCHDB-1697:
----------------------------------------------------------

Commit d1ca821f015cceb98da443dc8e4e6478c97cf644 in couchdb's branch refs/heads/Update-Sidebar-Ui
from [~kxepal]
[ https://git-wip-us.apache.org/repos/asf?p=couchdb.git;h=d1ca821 ]

Actually, run the test case for COUCHDB-1697


> if-none-match header causes 500 internal server error on CORS requests
> ----------------------------------------------------------------------
>
>                 Key: COUCHDB-1697
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-1697
>             Project: CouchDB
>          Issue Type: Bug
>          Components: HTTP Interface
>    Affects Versions: 1.3
>            Reporter: Ryan Ramage
>            Assignee: Ryan Ramage
>            Priority: Blocker
>             Fix For: 1.3
>
>
> Browsers can send a if-none-match header to couchdb, but this can will break when CORS
is enabled. The reason seems to be the header comes in as a binary, eg from the debug log
the header is:
> {'If-None-Match',"\"V9J3604P4V9VTR5H77SBHJW\""},
> When maybe_apply_cors_headers is called, the assumption is that the headers are strings.
This can be seen here: https://github.com/apache/couchdb/blob/b0420f9006915149e81607615720f32f21c76725/src/couchdb/couch_httpd_cors.erl#L219
> Thus a string:to_lower is undefined as can be seen in this stacktrace:
> [info] [<0.148.0>] Stacktrace: [{string,to_lower,
>                                  [undefined],
>                                  [{file,"string.erl"},{line,468}]},
>                                 {couch_httpd_cors,maybe_apply_cors_headers,2,
>                                  [{file,
>                                    "/Users/jan/Work/build-couchdb-mac/build-couchdb/git-build/https%3A%2F%2Fgit-wip-us.apache.org%2Frepos%2Fasf%2Fcouchdb.git%3A06c3f351f158f107a8293c7c6c9b2415b942f0e9/src/couchdb/couch_httpd_cors.erl"},
>                                   {line,219}]},
>                                 {couch_httpd,send_response,4,
>                                  [{file, 
> See original gist https://gist.github.com/ryanramage/5143964#file-gistfile1-txt-L64



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