phillro/node-elasticsearch-client — pull request #104 by mattallty (2013-08-28 11:57:56+00:00)
Title: Added keep-alive option

Sending a 'Connection: keep-alive' will notify Node that the connection
to the server should be persisted until the next request. Can add
significant performance. See
http://nodejs.org/api/http.html#http_http_request_options_callback