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From "Benoit Chesneau (JIRA)" <>
Subject [jira] Created: (COUCHDB-855) New host manager
Date Mon, 16 Aug 2010 15:00:17 GMT
New host manager

                 Key: COUCHDB-855
             Project: CouchDB
          Issue Type: Improvement
    Affects Versions: 1.1
            Reporter: Benoit Chesneau
            Assignee: Benoit Chesneau
             Fix For: 1.1

New vhost manager. allows dynamic add of vhosts without restart, wildcard in vhost and specific
functions in erlang by kind of domain. It also fix issue in etap test (160) .

Find attached to this ticket the patch. It is also available in my github repo :

more details :

This gen_server keep state of vhosts added to the ini and try to
match the Host header (or forwarded) against rules built against
vhost list. 

Declaration of vhosts take place in the configuration file :

[vhosts] = /example
* = /example

The first line will rewrite the rquest to display the content of the
example database. This rule works only if the Host header is
'' and won't work for CNAMEs. Second rule on the other hand
match all CNAMES to example db. So or
will work.

The wildcard ('*') should always be the last in the cnames:

     "* = /"  will match all cname on top of db
examples to the root of the machine. (for now no rewriting is

By default vhosts redirection is handle by the function
couch_httpd_vhost:redirect_to_vhost, but you could pass per vhost a
specific function :

     "*" = {Module, Func}"

The function take the Mochiweb Request object and should return a new
Mochiweb Request object.

You could also change the default function to handle request by
changing the setting `redirect_vhost_handler` in `httpd` section of
the Ini:

      redirect_vhost_handler = {Module, Fun}

The function take 2 args : the mochiweb request object and the target

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