CIFS over SSH jumpstation does not work in quick succession

[vpartington]

When opening and closing two WINRM_INTERNAL connections over a SSH jumpstation in a short time, CIFS operations for the second connection will throw a stacktrace like the one below:

com.xebialabs.overthere.RuntimeIOException: Cannot determine existence of cifs:winrm_internal://user@host.example.com@localhost:1026:1025/C:\windows\temp\overthere-20140128T111124131.tmp: jcifs.smb.SmbException: Transport8[localhost/127.0.0.1:1026] timedout waiting for response to Trans2QueryPathInformation[command=SMB_COM_TRANSACTION2,received=false,errorCode=0,flags=0x0018,flags2=0xC803,signSeq=0,tid=2051,pid=17395,uid=4096,mid=5180,wordCount=15,byteCount=101,totalParameterCount=100,totalDataCount=0,maxParameterCount=2,maxDataCount=40,maxSetupCount=0,flags=0x00,timeout=0,parameterCount=100,parameterOffset=66,parameterDisplacement=0,dataCount=0,dataOffset=166,dataDisplacement=0,setupCount=1,pad=1,pad1=0,informationLevel=0x101,filename=\windows\temp\overthere-20140128T111124131.tmp] 
jcifs.util.transport.TransportException: Transport8[localhost/127.0.0.1:1026] timedout waiting for response to Trans2QueryPathInformation[command=SMB_COM_TRANSACTION2,received=false,errorCode=0,flags=0x0018,flags2=0xC803,signSeq=0,tid=2051,pid=17395,uid=4096,mid=5180,wordCount=15,byteCount=101,totalParameterCount=100,totalDataCount=0,maxParameterCount=2,maxDataCount=40,maxSetupCount=0,flags=0x00,timeout=0,parameterCount=100,parameterOffset=66,parameterDisplacement=0,dataCount=0,dataOffset=166,dataDisplacement=0,setupCount=1,pad=1,pad1=0,informationLevel=0x101,filename=\windows\temp\overthere-20140128T111124131.tmp] 
at jcifs.smb.SmbTransport.send(SmbTransport.java:634) 
at jcifs.smb.SmbSession.send(SmbSession.java:238) 
at jcifs.smb.SmbTree.send(SmbTree.java:119) 
at jcifs.smb.SmbFile.send(SmbFile.java:775) 
at jcifs.smb.SmbFile.queryPath(SmbFile.java:1363) 
at jcifs.smb.SmbFile.exists(SmbFile.java:1417) 
at com.xebialabs.overthere.cifs.CifsFile.exists(CifsFile.java:81) 
at com.xebialabs.overthere.spi.BaseOverthereConnection.createConnectionTemporaryDirectory(BaseOverthereConnection.java:193) 
at com.xebialabs.overthere.spi.BaseOverthereConnection.getConnectionTemporaryDirectory(BaseOverthereConnection.java:180) 
at com.xebialabs.overthere.spi.BaseOverthereConnection.getTempFile(BaseOverthereConnection.java:142)