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2. 发明公开

KR1020020069489A 클라이언트-서버 연결 방법, 로드 밸런서 동작 방법 및패킷 전송 방법 失效
标题翻译：客户服务器连接方法，负载均衡器操作方法和分组传输方法
公开(公告)号：KR1020020069489A
公开(公告)日：2002-09-04
申请号：KR1020020009821
申请日：2002-02-25
申请人： 아바야 커뮤니케이션 이스라엘 리미티드
发明人： 아미타이얼 , 베이저댄 , 프리드만오피르 , 샤브테이리오 , 크로넨탈가이
IPC分类号： H04L12/803 , H04L29/02 , H04L12/24
CPC分类号： H04L65/1069 , H04L67/02 , H04L67/1002 , H04L67/1008 , H04L67/1014 , H04L67/1027 , H04L67/14 , H04L67/142 , H04L69/16 , H04L69/163 , H04L69/329
摘要： PURPOSE: A client-server connection method, a load balancer operation method, and a packet transmission method are provided to connect a client to a server by a load balancer associated with a plurality of servers. CONSTITUTION: Upon receiving a TCP(Transmission Control Protocol) packet requesting to establish a connection with a web site hosted by a server farm(50), a load balancer responds with a respective TCP packet so as to establish a connection between a client and the load balancer(52). One or more of the packets received on the established connection, e.g., the first packet of an HTTP(HyperText Transfer Protocol) request message or the one or more packets including a URL(Uniform Resource Locator), are examined(54). A server to handle the requests of the client is selected(56). An available connection to the selected server is then spliced to the connection between the load balancer and the client, and the examined packet is forwarded, in accordance with the splicing, to the selected server(58). The handling of the connection by the load balancer then moves to a forwarding state in which packets received on the spliced connection are forwarded in accordance with the splicing(60). When the first packet of a new request is received(64), the packet is examined to select the server for servicing the new request(66). If a different server is selected(67), the splicing of the client connection with the server connection to the previously selected server is canceled(68).
摘要翻译：目的：提供客户机 - 服务器连接方法，负载平衡器操作方法和分组传输方法，以通过与多个服务器相关联的负载平衡器将客户端连接到服务器。规定：在收到请求建立与由服务器场（50）托管的网站的连接的TCP（传输控制协议）数据包时，负载平衡器以相应的TCP数据包进行响应，以建立客户机与负载平衡器（52）。检查在建立的连接上接收的一个或多个分组，例如HTTP（超文本传输协议）请求消息的第一分组或包括URL（统一资源定位符）的一个或多个分组）（54）。选择处理客户端请求的服务器（56）。然后将到所选择的服务器的可用连接被拼接到负载平衡器和客户端之间的连接，并且所检查的分组根据拼接被转发到所选择的服务器（58）。然后，由负载平衡器处理连接然后移动到转发状态，其中根据拼接（60）转发在拼接连接上接收的分组。当接收到新请求的第一分组（64）时，检查分组以选择用于服务新请求的服务器（66）。如果选择了不同的服务器（67），将取消与先前选择的服务器的服务器连接的客户端连接的拼接（68）。

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