httclient sendasync issue in .net core_await client.sendasync-优快云博客

本文链接：https://blog.youkuaiyun.com/junjie008/article/details/130889572

文章讨论了在.NETCoreconsole应用中，使用HttpClient进行HTTP请求时遇到的IOException和SocketException问题。原因是套接字耗尽，建议采用IHttpClientFactory来管理HttpClient实例，以避免端口资源的过度消耗。官方文档推荐的方式可以防止此类问题并提高应用程序的稳定性。

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var client = new HttpClient();
        HttpRequestMessage httpRequestMessage = new HttpRequestMessage(HttpMethod.Get, "https://www.nseindia.com/option-chain");
        httpRequestMessage.Headers.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)");
        httpRequestMessage.Headers.Add("Accept", "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5");
        httpRequestMessage.Headers.Add("Accept-Language", "en-us,en;q=0.5");
        httpRequestMessage.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
        var response = await client.SendAsync(httpRequestMessage);

The above code is working in the .net console application but not working in the .net core console application. In .net core console application getting following error.

IOException: Unable to read data from the transport connection: The I/O operation has been aborted because of either a thread exit or an application request,

SocketException: The I/O operation has been aborted because of either a thread exit or an application request.

answers1

The reason is because of socket exhaustion.
The resolution is to use IHttpClientFactory to obtain the HttpClient object to make the calls.

翻译：原因是因为套接字耗尽。解决方案是使用 IHttpClientFactory 获取 HttpClient 对象以进行调用。

answers2

The error appears to indicate your main() which called the httpcliebt code without waiting for the async operation to complete and the program exited before the call completed.

翻译：该错误似乎表明您的 main() 调用了 httpcliebt 代码而不等待异步操作完成并且程序在调用完成之前退出。

answers3

These error can be due to port exhaustion due to not using HttpClient as recommended in the official docs.

翻译：这些错误可能是由于没有按照官方文档中的建议使用 HttpClient 而导致端口耗尽。