HTTP proxy IP technology is a technology that forwards HTTP requests and responses through a proxy server, which can achieve functions such as hiding the client IP address, accelerating access, and breaking through network restrictions. Its principles are as follows:
1. The client initiates an HTTP request. When a client (such as a browser) wants to access a website, it sends an HTTP request to the proxy server. This request contains information such as the URL of the website to be accessed, the request method (GET, POST, etc.), and the request header.
2. The proxy server receives the HTTP request. After receiving the HTTP request from the client, the proxy server will decide whether to forward the request to the target server based on the information in the request header and the configuration of the proxy server itself. If forwarding is required, the proxy server will initiate an HTTP request to the target server on behalf of the client.
3. Proxy server forwards HTTP request When the proxy server sends an HTTP request to the target server, it adds some additional information to the request header, such as the X-Forwarded-For field, which is used to identify which proxy server the request is sent from. In this way, the target server can identify the real client IP address.
4. The target server responds to the HTTP request. After receiving the HTTP request from the proxy server, the target server generates a corresponding HTTP response based on the information in the request header and its own configuration, and sends it back to the proxy server.
5. The proxy server receives the HTTP response. After receiving the HTTP response from the target server, the proxy server will decide whether to forward the response to the client based on the information in the response header and the configuration of the proxy server itself. If forwarding is required, the proxy server will send the response to the client and add some additional information to the response header, such as cache control instructions, transcoding instructions, etc.
In short, HTTP proxy IP technology is a technology that forwards HTTP requests and responses through a proxy server, which can achieve functions such as hiding the client IP address, accelerating access, and breaking through network restrictions. Its core principle is that the proxy server replaces the client to send HTTP requests to the target server, and adds additional information to the request header and response header to achieve the proxy and forwarding functions.
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