我们目前正在开发一个使用DotNetOpenAuth库的应用程序，以通过OAuth保护wcf SOAP Web服务。整个过程都在IIS7上运行。至少在PC上运行时，Web服务和DotNetOpenAuth库运行平稳。但是，从android平台调用该服务会引起一些问题。有时它会运行得很好，有时会导致一个异常，说“序列不包含任何元素”。
不幸的是，我没有所有细节，因为我自己实际上没有可用的android系统。但是，在读取同事创建的日志文件时，有一些突出之处。
Windows事件日志指示这是一个KeyNotFoundException，它的发生是因为可以识别令牌（实际上，令牌存在于数据库中，因此不应发生这种情况-我已经检查了）。
此外，真正有趣的是，仅当oauth_token参数中存在+或/符号时，才会发生此异常。我有点倾向于认为这是一个编码问题，其中两个字符未正确编码。检查Windows事件日志时，无论何时oauth_token参数包含+或/，都将其替换为空格。但是我不知道该编码在哪里，为什么用空格替换这两个字符，最重要的是现在如何解决它。
我还启用了log4net日志记录，这表明oauth_token变量与数据库中的变量完全相同。但是，它确实显示了构造的签名基本字符串包含oauth_token，只有/字符被％252F替换。但是，以下两行显示了oauth_token变量，它们分别显示（即，不是作为基本字符串的一部分，而是在变量的摘要中），并且/实际显示为/。
任何与此问题的帮助将不胜感激。
编辑
从log4net检索的日志
2012-05-18 13:05:21,588 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Channel - Preparing to send UnauthorizedTokenResponse (1.0.1) message.
2012-05-18 13:05:22,099 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.TokenHandlingBindingElement applied to message.
2012-05-18 13:05:22,100 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.OAuthHttpMethodBindingElement did not apply to message.
2012-05-18 13:05:22,102 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.Messaging.Bindings.StandardReplayProtectionBindingElement did not apply to message.
2012-05-18 13:05:22,104 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.Messaging.Bindings.StandardExpirationBindingElement did not apply to message.
2012-05-18 13:05:22,109 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.SigningBindingElementChain did not apply to message.
2012-05-18 13:05:22,113 (GMT+2) [5] INFO DotNetOpenAuth.Messaging.Channel - Prepared outgoing UnauthorizedTokenResponse (1.0.1) message for <response>:
oauth_token: LgelzDbE0hd8Z+HrRQWD63SzNA8=
oauth_token_secret: eK1sVTQvF6LrHqrtDGXe4LpLunI=
oauth_callback_confirmed: true
2012-05-18 13:05:22,113 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Channel - Sending message: UnauthorizedTokenResponse
2012-05-18 13:05:22,463 (GMT+2) [5] INFO DotNetOpenAuth.Messaging.Channel - Scanning incoming request for messages: https://websrv.hszuyd.nl/serviceprovider/v2/OAuth.ashx?oauth_token=LgelzDbE0hd8Z+HrRQWD63SzNA8=
2012-05-18 13:05:22,996 (GMT+2) [5] ERROR DotNetOpenAuth.OAuthServiceProvider - An unhandled exception occurred in ASP.NET processing: DotNetOpenAuth.Messaging.ProtocolException: A token in the message was not recognized by the service provider. ---> System.Collections.Generic.KeyNotFoundException: Unrecognized token ---> System.InvalidOperationException: Sequence contains no elements
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
at System.Linq.Queryable.First[TSource](IQueryable`1 source, Expression`1 predicate)
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 31
--- End of inner exception stack trace ---
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 35
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 80
--- End of inner exception stack trace ---
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 100
at OAuthServiceProvider.Code.CustomOAuthMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in C:\Program Files\TimeTableWebService\sp\Code\CustomOAuthTypeProvider.cs:line 24
at DotNetOpenAuth.Messaging.Channel.Receive(Dictionary`2 fields, MessageReceivingEndpoint recipient) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 713
at DotNetOpenAuth.OAuth.ChannelElements.OAuthChannel.ReadFromRequestCore(HttpRequestInfo request) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthChannel.cs:line 194
at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 422
at OAuth.ProcessRequest(HttpContext context) in d:\oauthSiteTest\serviceprovider\v2\OAuth.ashx:line 21
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
DotNetOpenAuth.Messaging.ProtocolException: A token in the message was not recognized by the service provider. ---> System.Collections.Generic.KeyNotFoundException: Unrecognized token ---> System.InvalidOperationException: Sequence contains no elements
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
at System.Linq.Queryable.First[TSource](IQueryable`1 source, Expression`1 predicate)
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 31
--- End of inner exception stack trace ---
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 35
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 80
--- End of inner exception stack trace ---
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 100
at OAuthServiceProvider.Code.CustomOAuthMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in C:\Program Files\TimeTableWebService\sp\Code\CustomOAuthTypeProvider.cs:line 24
at DotNetOpenAuth.Messaging.Channel.Receive(Dictionary`2 fields, MessageReceivingEndpoint recipient) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 713
at DotNetOpenAuth.OAuth.ChannelElements.OAuthChannel.ReadFromRequestCore(HttpRequestInfo request) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthChannel.cs:line 194
at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 422
at OAuth.ProcessRequest(HttpContext context) in d:\oauthSiteTest\serviceprovider\v2\OAuth.ashx:line 21
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
2012-05-18 13:05:27,382 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Channel - Preparing to send UnauthorizedTokenResponse (1.0.1) message.
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.TokenHandlingBindingElement applied to message.
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.OAuthHttpMethodBindingElement did not apply to message.
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.Messaging.Bindings.StandardReplayProtectionBindingElement did not apply to message.
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.Messaging.Bindings.StandardExpirationBindingElement did not apply to message.
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Bindings - Binding element DotNetOpenAuth.OAuth.ChannelElements.SigningBindingElementChain did not apply to message.
2012-05-18 13:05:27,430 (GMT+2) [6] INFO DotNetOpenAuth.Messaging.Channel - Prepared outgoing UnauthorizedTokenResponse (1.0.1) message for <response>:
oauth_token: tdKwMhsNOyQPTiz+K5th/RZr0F8=
oauth_token_secret: UtfdLNG0VqrTGinchsNfjbyFBtE=
oauth_callback_confirmed: true
2012-05-18 13:05:27,430 (GMT+2) [6] DEBUG DotNetOpenAuth.Messaging.Channel - Sending message: UnauthorizedTokenResponse
2012-05-18 13:05:27,503 (GMT+2) [6] INFO DotNetOpenAuth.Messaging.Channel - Scanning incoming request for messages: https://websrv.hszuyd.nl/serviceprovider/v2/OAuth.ashx?oauth_token=tdKwMhsNOyQPTiz+K5th/RZr0F8=
2012-05-18 13:05:27,512 (GMT+2) [6] ERROR DotNetOpenAuth.OAuthServiceProvider - An unhandled exception occurred in ASP.NET processing: DotNetOpenAuth.Messaging.ProtocolException: A token in the message was not recognized by the service provider. ---> System.Collections.Generic.KeyNotFoundException: Unrecognized token ---> System.InvalidOperationException: Sequence contains no elements
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
at System.Linq.Queryable.First[TSource](IQueryable`1 source, Expression`1 predicate)
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 31
--- End of inner exception stack trace ---
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 35
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 80
--- End of inner exception stack trace ---
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 100
at OAuthServiceProvider.Code.CustomOAuthMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in C:\Program Files\TimeTableWebService\sp\Code\CustomOAuthTypeProvider.cs:line 24
at DotNetOpenAuth.Messaging.Channel.Receive(Dictionary`2 fields, MessageReceivingEndpoint recipient) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 713
at DotNetOpenAuth.OAuth.ChannelElements.OAuthChannel.ReadFromRequestCore(HttpRequestInfo request) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthChannel.cs:line 194
at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 422
at OAuth.ProcessRequest(HttpContext context) in d:\oauthSiteTest\serviceprovider\v2\OAuth.ashx:line 21
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
DotNetOpenAuth.Messaging.ProtocolException: A token in the message was not recognized by the service provider. ---> System.Collections.Generic.KeyNotFoundException: Unrecognized token ---> System.InvalidOperationException: Sequence contains no elements
at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
at System.Data.Linq.Table`1.System.Linq.IQueryProvider.Execute[TResult](Expression expression)
at System.Linq.Queryable.First[TSource](IQueryable`1 source, Expression`1 predicate)
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 31
--- End of inner exception stack trace ---
at OAuthServiceProvider.Code.DatabaseTokenManager.GetRequestToken(String token) in C:\Program Files\TimeTableWebService\sp\Code\DatabaseTokenManager.cs:line 35
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 80
--- End of inner exception stack trace ---
at DotNetOpenAuth.OAuth.ChannelElements.OAuthServiceProviderMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthServiceProviderMessageFactory.cs:line 100
at OAuthServiceProvider.Code.CustomOAuthMessageFactory.GetNewRequestMessage(MessageReceivingEndpoint recipient, IDictionary`2 fields) in C:\Program Files\TimeTableWebService\sp\Code\CustomOAuthTypeProvider.cs:line 24
at DotNetOpenAuth.Messaging.Channel.Receive(Dictionary`2 fields, MessageReceivingEndpoint recipient) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 713
at DotNetOpenAuth.OAuth.ChannelElements.OAuthChannel.ReadFromRequestCore(HttpRequestInfo request) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\OAuth\ChannelElements\OAuthChannel.cs:line 194
at DotNetOpenAuth.Messaging.Channel.ReadFromRequest(HttpRequestInfo httpRequest) in c:\BuildAgent\work\a02b428f36957bca\src\DotNetOpenAuth\Messaging\Channel.cs:line 422
at OAuth.ProcessRequest(HttpContext context) in d:\oauthSiteTest\serviceprovider\v2\OAuth.ashx:line 21
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
2012-05-18 13:05:30,486 (GMT+2) [5] INFO DotNetOpenAuth.Messaging.Channel - Scanning incoming request for messages: https://websrv.hszuyd.nl/serviceprovider/v2/OAuth.ashx
2012-05-18 13:05:30,487 (GMT+2) [5] DEBUG DotNetOpenAuth.Messaging.Channel - Incoming request received: RequestScopedTokenMessage
2012-05-18 13:05:30,487 (GMT+2) [5] INFO DotNetOpenAuth.Messaging.Channel - Processing incoming RequestScopedTokenMessage (1.0.1) message:
scope: http://tempuri.org/DataApi/retrieveTimeTable
oauth_callback: x-oauthflow://callback/
oauth_consumer_key: sampleconsumer
oauth_nonce: 913320039
oauth_signature_method: HMAC-SHA1
oauth_signature: yfPMlcFo6/NgJltyCLc++RMyQCY=
oauth_version: 1.0
oauth_timestamp: 1337339130
最佳答案
我们肯定需要一个异常的调用堆栈。可能这个异常只是内部异常（ASP.NET习惯于报告内部异常而不是外部异常），并且外部异常可能还会添加我们需要的上下文。希望您已经有了enabled logging，因此应该可以从那里获取所有异常详细信息。
如果/和+字符未在HTTP URL中编码，则这是应该修复的客户端错误。