TwitterService.GetRequestToken 抛出异常“值不能为空。参数名称：查询”

Question

一周前，我遇到了从 TweetSharp 库获取请求令牌的问题，每次它抛出空异常。以前它有效，凭据有效。来自https://github.com/shugonta/tweetsharp 的测试同样的问题 TweetSharp 代理似乎又出现了一些问题。

var service = new TwitterService(_consumerKey, _consumerSecret);
var requestToken = service.GetRequestToken();

System.ArgumentNullException : Value cannot be null.
Parameter name: query
   at System.Compat.Web.HttpUtility.ParseQueryString(String query, Encoding encoding) in D:\My Dropbox\_7_Source_Code\_1_Projects\hammock-codeplex\src\net40\Hammock.ClientProfile\Mono\HttpUtility.cs:line 1222
   at TweetSharp.TwitterService.GetRequestToken(String callback) in C:\Users\Boker\Desktop\tweetsharp-master\src\net40\TweetSharp.Next\Service\TwitterService.OAuth.cs:line 171
   at TweetSharp.TwitterService.GetRequestToken() in C:\Users\Boker\Desktop\tweetsharp-master\src\net40\TweetSharp.Next\Service\TwitterService.OAuth.cs:line 184
   at TweetSharp.Tests.Service.TwitterServiceTests.Can_exchange_for_access_token() in C:\Users\Boker\Desktop\tweetsharp-master\src\net40\TweetSharp.Next.Tests\Service\TwitterServiceTests.OAuth.cs:line 26

Answer 1

调用 GetRequestToken 会返回异常。然后我查看了 TwitterService.Response 并发现了这个异常：底层连接已关闭：发送时发生意外错误。解决方案参考：..The underlying connection was closed: An unexpected error occurred on a receive

因此，在调用 TweetSharp 方法之前添加它。

ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12 | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls;