'identity.api.rackspacecloud.com'随机抛出'远程名称无法解析'异常('identity.api.rackspacecl

'identity.api.rackspacecloud.com'随机抛出'远程名称无法解析'异常('identity.api.rackspacecloud.com' randomly throws 'The remote name could not be resolved' exception)

我正在访问Rackspace Cloud API。

我有一个api电话，在架空云上验证我。

该方法可以很好地工作，但是，我会不时地得到这个例外：

The remote name could not be resolved: 'identity.api.rackspacecloud.com'

当我没有得到此异常时，该方法返回预期的结果，因为它应该是。

这有什么特别的原因吗？

这是我的.net代码：

private async Task<XDocument> AuthenticateAsync() { XNamespace ns = "http://docs.rackspace.com/identity/api/ext/RAX-KSKEY/v1.0"; XDocument doc = new XDocument( new XDeclaration("1.0", "UTF-8", "Yes"), new XElement("auth", new XElement(ns + "apiKeyCredentials", new XAttribute("username", "the userName"), new XAttribute("apiKey", "the apiKey") ) ) ); using (HttpClient client = new HttpClient()) { client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/xml")); StringContent content = new StringContent(doc.ToString(), Encoding.UTF8, "application/xml"); // i randomly get "The remote name could not be resolved" exception HttpResponseMessage response = await client.PostAsync("https://identity.api.rackspacecloud.com/v2.0/tokens", content); response.EnsureSuccessStatusCode(); string stringResponse = await response.Content.ReadAsStringAsync(); return XDocument.Parse(stringResponse); } }

I am accessing Rackspace Cloud APIs.

I have one api call which authenticates me on the rackspace cloud.

The method works perfectly, however, from time to time, i get this exception, randomly :

The remote name could not be resolved: 'identity.api.rackspacecloud.com'

When i am not getting this exception, the method returns the expected result, as it should be.

Is there any specific reason why it does this?

Here is my .net code:

private async Task<XDocument> AuthenticateAsync() { XNamespace ns = "http://docs.rackspace.com/identity/api/ext/RAX-KSKEY/v1.0"; XDocument doc = new XDocument( new XDeclaration("1.0", "UTF-8", "Yes"), new XElement("auth", new XElement(ns + "apiKeyCredentials", new XAttribute("username", "the userName"), new XAttribute("apiKey", "the apiKey") ) ) ); using (HttpClient client = new HttpClient()) { client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/xml")); StringContent content = new StringContent(doc.ToString(), Encoding.UTF8, "application/xml"); // i randomly get "The remote name could not be resolved" exception HttpResponseMessage response = await client.PostAsync("https://identity.api.rackspacecloud.com/v2.0/tokens", content); response.EnsureSuccessStatusCode(); string stringResponse = await response.Content.ReadAsStringAsync(); return XDocument.Parse(stringResponse); } }