The HTTP connector is a Java class that implements HTTP. The connector in Tomcat 5.0.x is HTTP/1.1 (org.apache.coyote.tomcat5.CoyoteConnector), which implements the HTTP/1.1 protocol and listens on the connector port for incoming HTTP requests. The Tomcat 5.5 version is org.apache.catalina.connector.Connector, which is used for all the connectors described next.