Github user eiri commented on a diff in the pull request:

    https://github.com/apache/couchdb-chttpd/pull/101#discussion_r53064076
  
    --- Diff: src/chttpd_cors.erl ---
    @@ -306,6 +316,35 @@ get_cors_config(#httpd{cors_config = undefined}) ->
     get_cors_config(#httpd{cors_config = Config}) ->
         Config.
     
    +cors_config(Host, Key, Default) ->
    +    config:get(cors_section(Host), Key,
    +                     config:get("cors", Key, Default)).
    +
    +cors_section(Host0) ->
    +    {Host, _Port} = split_host_port(Host0),
    --- End diff --
    
    The function would work, the config wouldn't. In real life value for header 
`Host` set to [target's 
host](https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.23), not 
URI, so cors config would be expected to be under `[cors:partner.com]` where 
partner.com is the name of our vhost and `http://restricted.dev:8000`is the 
address of the server that hosts javascript that does ajax call. 


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