What are HTTP status codes?

HTTP status codes are used to inform the HTTP client of the status of the HTTP request. In some cases, the HTTP server needs to inform the client that the request was not understood, or that extra actions need to be taken in order to get a full response. The HTTP status codes are divided into four separate ranges, each one covering a specific type of response.

100–199 range

These codes are used to provide information to the HTTP client on how to deliver a request. These codes are usually processed by the HTTP client itself and will be handled before your web scraper needs to worry about them.

For example, the client may prefer that requests be sent using the HTTP 2.0 protocol and request...