Setting the handling when sending the request fails

When an exception occurs while sending an HTTP request, you can perform some error-handling operations.

HttpRequestBuilder.Post("https://furion.net/")    .SetOnRequestFailed((exception, responseMessage) =>     // Note: responseMessage may be null    {        // Example: print the exception message        Console.WriteLine(exception.Message);    });

Note: SetOnRequestFailed can be used together with the exception suppression method SuppressExceptions() to capture and handle request failure information without interrupting the program flow.

Recommended: use the WithStatusCodeHandler approach

It is recommended to use the WithStatusCodeHandler method for setting response status code handlers described in section 3.51. When you need to handle specific status codes (such as server error status codes, i.e. those greater than 500), you can do so as follows:

HttpRequestBuilder.Get("https://furion.net/")    // Indicates that a callback handler is configured for status codes greater than or equal to 500    .WithStatusCodeHandler(">=500", async (responseMessage, cancellationToken) =>    {        Console.WriteLine("Calling the status code handler");    })