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Since http is based on tcp, You need to complete a three-way handshake to establish a tcp connection before you can start http communication, Therefore, when http flood attacks are carried out, it is not possible to use forged source ip addresses to launch attacks. An attacker will typically use an http proxy server, Not only can the source be hidden from being traced, It also improves attack efficiency-after the attacker connects to the proxy server and sends the request, You can directly disconnect from the proxy server and start connecting to the next proxy server, At this time, the http connection between the proxy server and the target web server is still maintained, and the web server needs to continue to accept and process data. An efficient http flood attack should continuously send http requests for different resources and pages, and request resources that cannot be cached as much as possible (such as keyword search. User-related information, etc.)Https://www.jianshu.com/p/1ccbc6a348db其实江上行船最远可以到达巴蜀一带的，但是上流激流险滩众多。If (state.getValue (). Equals ("state1")) {墨西哥贩毒团伙老大何塞·里维拉，近期在伊斯坦布尔扩展毒贩业务，不断除掉那里的毒枭，霸占毒品销售市场。Public abstract class AbstractSubject implementations Subject {