I have to apologize, again: I should have payed more attention to source code.
For those interested in answer to my question, that is information on how to use the curl extension provided by couchjs, there is enough in the test/test.js* file. One can use CouchDB.request method defined in there to make HTTP calls. Enjoy! *http://svn.apache.org/viewvc/couchdb/trunk/test/test.js?view=co
