Timeout exceeded while waiting for welcome message. Make sure you are connecting to an SSH or SFTP server.

Hi,

I am trying to use SFTP to connect to a host. It works the first time. If I try to reconnect (without restarting the application) the connect fails with the exception:

Timeout exceeded while waiting for welcome message. 
Make sure you are connecting to an SSH or SFTP server.

Here is the log. One weird thing about the log is that the fact that logging has begun is not logged the second time I start LogWriter, but it is the first time I start it.

2017-09-26 09:50:33.366 INFO Sftp(3)[12] Info: Connecting to files.responsys.net:22 using Sftp.
2017-09-26 09:50:33.366 INFO Sftp(3)[12] Info: Assembly: Rebex.Sftp 2017 R3 for .NET 4.0-4.7
2017-09-26 09:50:33.366 DEBUG Sftp(3)[12] Info: Platform: Windows 6.1.7601 64-bit; CLR: 4.0.30319.42000
2017-09-26 09:50:33.366 DEBUG Sftp(3)[12] Info: Culture: en; Windows-1252
2017-09-26 09:50:33.366 INFO Sftp(3)[12] Info: Using proxy HTTP CONNECT proxy:8080.
2017-09-26 09:50:33.366 DEBUG ProxySocket(2)[12] Proxy: Resolving 'proxy'.
2017-09-26 09:50:33.368 DEBUG ProxySocket(2)[13] Proxy: Connecting to proxy at 172.16.1.130:8080.
2017-09-26 09:50:33.543 DEBUG ProxySocket(2)[10] Proxy: Connection initialized successfully.
2017-09-26 09:50:35.566 ERROR Sftp(3)[12] SSH: Rebex.Net.SshException: Timeout exceeded while waiting for welcome message. Make sure you are connecting to an SSH or SFTP server.
   at Rebex.Net.SshSession.GNV()
   at Rebex.Net.SshSession.Negotiate()
2017-09-26 09:50:35.567 ERROR Sftp(3)[12] Info: Rebex.Net.SshException: Timeout exceeded while waiting for welcome message. Make sure you are connecting to an SSH or SFTP server.
   at Rebex.Net.SshSession.GNV()
   at Rebex.Net.SshSession.Negotiate()
   at Rebex.Net.Sftp.EOG.NNV(TUG C, Boolean V)
   at Rebex.Net.Sftp.HJ(String C, Int32 V, SshParameters Z, TUG N)