我想将 Serilog 与 LogEntries 一起使用。当我在 Windows PC 上运行应用程序时，这工作正常，但是在 ubuntu 14.2 上构建和运行单声道时，在 LogEntries 上没有收到任何消息。作为第二个 slog sink，我已经配置了控制台输出，这适用于 Linux。
在 serilog 中打开 selfdebug 后，我记录了这个异常：
2016-05-05T10:55:00 Exception while emitting periodic batch from Serilog.Sinks.Logentries.LogentriesSink: System.IO.IOException: The authentication or decryption has failed. ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: The authentication or decryption has failed.
at Mono.Security.Protocol.Tls.RecordProtocol.EndReceiveRecord (IAsyncResult asyncResult) [0x00040] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.SafeEndReceiveRecord (IAsyncResult ar, Boolean ignoreEmpty) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.NegotiateAsyncWorker (IAsyncResult result) [0x00071] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (IAsyncResult result) [0x0003b] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x0000c] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslStreamBase.EndRead (IAsyncResult asyncResult) [0x00057] in <filename unknown>:0
at System.Net.Security.SslStream.EndAuthenticateAsClient (IAsyncResult asyncResult) [0x00011] in <filename unknown>:0
at System.Net.Security.SslStream.AuthenticateAsClient (System.String targetHost, System.Security.Cryptography.X509Certificates.X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, Boolean checkCertificateRevocation) [0x0000e] in <filename unknown>:0
at System.Net.Security.SslStream.AuthenticateAsClient (System.String targetHost) [0x00007] in <filename unknown>:0
at Serilog.Sinks.Logentries.LeClient.Connect () [0x00049] in <filename unknown>:0
at Serilog.Sinks.Logentries.LogentriesSink.EmitBatch (IEnumerable`1 events) [0x00023] in <filename unknown>:0
at Serilog.Sinks.PeriodicBatching.PeriodicBatchingSink.OnTick () [0x00051] in <filename unknown>:0
2016-05-05T10:55:02 Exception while emitting periodic batch from Serilog.Sinks.Logentries.LogentriesSink: System.IO.IOException: The authentication or decryption has failed. ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: The authentication or decryption has failed.
at Mono.Security.Protocol.Tls.RecordProtocol.EndReceiveRecord (IAsyncResult asyncResult) [0x00040] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.SafeEndReceiveRecord (IAsyncResult ar, Boolean ignoreEmpty) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.NegotiateAsyncWorker (IAsyncResult result) [0x00071] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (IAsyncResult result) [0x0003b] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x0000c] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslStreamBase.EndRead (IAsyncResult asyncResult) [0x00057] in <filename unknown>:0
at System.Net.Security.SslStream.EndAuthenticateAsClient (IAsyncResult asyncResult) [0x00011] in <filename unknown>:0
at System.Net.Security.SslStream.AuthenticateAsClient (System.String targetHost, System.Security.Cryptography.X509Certificates.X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, Boolean checkCertificateRevocation) [0x0000e] in <filename unknown>:0
at System.Net.Security.SslStream.AuthenticateAsClient (System.String targetHost) [0x00007] in <filename unknown>:0
at Serilog.Sinks.Logentries.LeClient.Connect () [0x00049] in <filename unknown>:0
at Serilog.Sinks.Logentries.LogentriesSink.EmitBatch (IEnumerable`1 events) [0x00023] in <filename unknown>:0
at Serilog.Sinks.PeriodicBatching.PeriodicBatchingSink.OnTick () [0x00051] in <filename unknown>:0
2016-05-05T10:55:13 Exception while emitting periodic batch from Serilog.Sinks.Logentries.LogentriesSink: System.IO.IOException: The authentication or decryption has failed. ---> System.IO.IOException: The authentication or decryption has failed. ---> Mono.Security.Protocol.Tls.TlsException: The authentication or decryption has failed.
at Mono.Security.Protocol.Tls.RecordProtocol.EndReceiveRecord (IAsyncResult asyncResult) [0x00040] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.SafeEndReceiveRecord (IAsyncResult ar, Boolean ignoreEmpty) [0x00000] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslClientStream.NegotiateAsyncWorker (IAsyncResult result) [0x00071] in <filename unknown>:0
--- End of inner exception stack trace ---
at Mono.Security.Protocol.Tls.SslClientStream.EndNegotiateHandshake (IAsyncResult result) [0x0003b] in <filename unknown>:0
at Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult) [0x0000c] in <filename Thread started: <Thread Pool> #9
unknown>:0
看起来 Mono 和 Logentries 之间存在 SSL 问题。