What is http protocol status code

HTTP protocol status code refers to the three-digit numerical code returned by the server to the client during the HTTP communication process. They are used to represent the server's processing results and status of the request. Through the HTTP status code, the client The client can understand the server's processing results of the request and take corresponding processing measures according to different status codes, such as resending the request, jumping to a new URL, displaying error messages, etc. Status codes play an important role in HTTP communication. Instructions and conventions.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

HTTP protocol status code refers to the three-digit numerical code returned by the server to the client during HTTP communication. They are used to represent the server's processing results and status of requests.

The first number of the HTTP status code represents the category of the response, which is classified as follows:

• 1xx: Informational status code, indicating that the request has been received and is being processed deal with.
• 2xx: Success status code, indicating that the request has been successfully received, understood and processed by the server.
• 3xx: Redirect status code, indicating that further action is required to complete the request.
• 4xx: Client error status code, indicating that the request sent by the client is incorrect or cannot be completed.
• 5xx: Server error status code, indicating that the server cannot complete the request and an error occurred.

Common HTTP status codes include:

• 200 OK: Standard response for a successful request.
• 301 Moved Permanently: Permanent redirection, the requested resource has been permanently moved to a new URL.
• 404 Not Found: Not found, the requested resource does not exist.
• 500 Internal Server Error: Internal server error, indicating that an error occurred when the server processed the request.
• 302 Found: Temporary redirection, the requested resource has been temporarily moved to a different URL.

Through the HTTP status code, the client can understand the server's processing results of the request, and take corresponding processing measures according to different status codes, such as resending the request, jumping to a new URL, Display error messages, etc. Status codes play an important role in instructions and conventions in HTTP communication.

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