Proxy, also known as network proxy , is a special network service that allows clients to connect indirectly to the target server through proxy services. Proxy services are helpful in protecting the privacy or security of network terminals. Computer systems or other types of network terminals that provide proxy services are called proxy servers.
principle
The client first establishes a connection with the proxy server, and then requests to create a connection to the target server or obtain the specified resource of the target server according to the proxy protocol used by the proxy server. The proxy server may download the resources of the target server to the local and cache them. If the resource that the client wants to obtain is in the cache of the proxy server, the proxy server will directly return the cached resource. The basic behavior of the proxy server is to receive the request sent by the client and forward it to the target server.
Function
1. Increase speed.
2. Protect the real IP.
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