获得HttpStatusCode为0 [英] Getting a HttpStatusCode of 0

问题描述

如果我将客户端连接的服务指向错误的URL，为什么我的HttpStatusCode为0。

Why am I getting a HttpStatusCode of 0 if I point the service my client is connecting to to a bad URL.

我的statusCodeAsInt显示为0。为什么它没有显示为404并被处理？

My statusCodeAsInt is showing up as a 0. Why is it not showing up as a 404 and being handled?

IRestResponse response = client.Execute(restReq);
HttpStatusCode statusCode = response.StatusCode;

var statusCodeAsInt = (int) statusCode;

        if (statusCodeAsInt >= 500)
        {
            throw new InvalidOperationException("A server error occurred: " + response.ErrorMessage, response.ErrorException);
        }
        if (statusCodeAsInt >= 400)
        {
            throw new InvalidOperationException("Request could not be understood by the server: " + response.ErrorMessage,
                response.ErrorException);
        }

处理此RestResponse的正确方法是什么？

What is the proper way to handle this RestResponse?

推荐答案

响应代码0通常表示响应为空 - 即不返回标题。

A response code of 0 generally means that the response was empty - i.e. not even headers were returned.

这通常在接受连接时发生，然后正常关闭，也称为FIN连接。这是服务器声明已完成广播的地方，但会继续收听新消息。 可能是防火墙问题。

This usually happens when a connection is accepted, and then closed gracefully, also known as a FIN connection. Which is where the server states that it has finished broadcasting to you, but will continue to listen for new messages. Could be a firewall issue.

另一件事是将 IRestResponse 更改为 RestResponse 。在这种情况下，使用IRestResponse没有任何优势。

Another thing to do is to change IRestResponse to RestResponse. Using IRestResponse offers no advantages in this scenario.

这篇关于获得HttpStatusCode为0的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！