Relay Server acts as a reverse proxy for client devices communicating with the Unwired Server.
Relay Server enables communications from the Unwired Server to client devices, via the Internet, without requiring any inbound port to be opened on the internal firewall.
In a clustered Unwired Platform system, Relay Server provides rudimentary load balancing for the Unwired Server cluster, distributing client requests in a round-robin manner.
Web server extensions — one each to handle communication with clients (from the Internet) and communication with Unwired Servers (on the internal LAN)
State Manager — a process that maintains state information across client requests and sessions
The State Manager process runs on the Web sever host, independent of the Web server application.
Relay Server characteristics and behavior are defined by a configuration file (rs.config), which is formatted as a properties file. See System Administration, “System Reference” for details.