"Keep-Alive" response header for Jetty Web server

Question

How to enable "Keep-Alive" response header for Jetty Web server?

Jetty web server - version 7

Solution

Connection: Keep-Alive is only used by HTTP/1.0 clients. The HTTP/1.1 protocol specifies that all connections are persistent by default.

According to the response to this bug (from 2008), since it claims:

Jetty uses persistent connections by default for HTTP/1.1 and if requested by the client for HTTP/1.0.

Jetty should respond with a Connection: Keep-Alive response header if you connect to it with an HTTP/1.0 client that sends a Connection: Keep-Alive request header.