Unless you have the Non-restricted User Agent feature (see Non-restricted User Agent Upgrade), RETS Connector uses a preset user agent, “RETS-Connector/1.2”. End users can modify the user agent, but if they do, the user agent name must begin with “RETS-Connector1.2”. If the user agent entered does not begin with that text, RETS Connector automatically attaches the “RETS-Connector1.2_” prefix to the user agent name. This is in accordance with the definition of the user agent header in RFC 2616. It allows each installation of RETS Connector to have a unique user agent and password, while still identifying itself as a RETS Connector application.