| 摘要 |
A server (20) comprises a first server (S0) configured to receive requests and a plurality of second servers (S1-SN) configured to service requests. A method of client-server communication comprises receiving, at the first server (S0), a request (31) from the client and allocating the request to one of the second servers (Sn). The server (20) determines (32, 32A) if the allocated second server (Sn) can provide a response to the request within a predetermined time period. If the allocated second server (Sn) cannot provide a response to the request within the predetermined time period it sends a reply (33) to the client indicating when the server system can provide a response to the request and comprising an identifier of the allocated second server (Sn). Server (Sn) generates (38) a response to the request. Server (Sn) receives a callback message (37) from the client. Server (Sn) sends the response (39) to the client. |
