1. A method for providing bidirectional communication between a user agent and a Web application server, comprising the steps of: providing a user agent and an application server, said user agent and said application server communicating via a hypertext transfer (HTTP) protocol; providing a server procedure configured to operate in association with said application server and associating a procedure identifier with said server procedure, said procedure identifier identifying said server procedure; constructing by said user agent, a hypertext transfer protocol (HTTP) uniform resource identifier (URI) that includes at least said procedure identifier; transmitting by said user agent to said application server, a first communication including a hypertext transfer protocol (HTTP) REQUEST message, said (HTTP) REQUEST message including said uniform resource identifier (URI); receiving and processing by said application server, said (HTTP) REQUEST message. said processing including the execution of said server procedure identified by said procedure identifier, constructing by said server procedure, a second communication including information responding to said first communication, said information stored within a portion of an HTTP RESPONSE message and where said portion is located outside of a body field of said HTTP RESPONSE message; and transmitting by said application server to said user agent, said second communication.