| 摘要 |
A method, apparatus, system, and signal-bearing medium that in an embodiment dynamically allocate client requests to target servers based on prepare messages sent by the target servers. The addresses of target servers are added to a queue in response to the prepare messages from the target servers. A network interface is then prepared to receive an incoming call request from a client. After the call request arrives from a client, one of the addresses is selected from the queue. The call request is then sent through a tunnel to the target server associated with the selected address.
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