Encapsulating protocol for session persistence and reliability

The present invention relates to network communication. The 1st protocol that encapsulates two or more 2nd protocols is used, and it communicates through a network. By use of the 1st protocol, the reliable connection between the durability of a session and a client, and host service is offered. In the one embodiment of the head office side of the present invention, the 2nd connection uses one of the 2nd protocols, and is established between the 1st protocol service and host service. Communication between the 1st protocol service and host service is performed through one of the 2nd protocols. The 1st protocol can communicate through TCP/IP and the 2nd protocol can communicate through HTTP, RDP, ICA, FTP, Oscar, or Telnet, for example.