[jcifs] SmbException -- Broken Pipe

[Reny Abrego]

Hello,

We have been experiencing a weird broken pipe issue with jcifs-1.2.10.

Essentially, we perform arbitrary authentication against a windows domain
controller for a Java web application using the following code snippet:

try {
	UniAddress mydomaincontroller = UniAddress.getByName(domainController);
	NtlmPasswordAuthentication mycreds = 
		new NtlmPasswordAuthentication( 
				defaultDomain,
				username,
				password );
	SmbSession.logon( mydomaincontroller, mycreds );
} catch( SmbAuthException sae ) {
	logger.debug("SMBAuthException Occurred: ",sae);
	throw new AuthenticationFailureException(sae);
} catch( SmbException se ) {
	logger.debug("SMBException Occurred: ",se);
	throw new AuthenticationFailureException(se);
} catch (Exception e) {
	logger.debug("General Exception Occurred: ",e);
	throw new AuthenticationFailureException(e);
}

This works fine for a while, usually several hours, where many people
authenticate and can use the app.  However, after some seemingly random interval
of time, we begin to see "Broken Pipe" exceptions.  Once this occurs,
authentication fails every time for everyone with the same "Broken Pipe"
exception until the application is restarted.

Any help on this would be appreciated.  The following stacktrace is
representative of the exceptions we receive once authentication ceases to work.

2006-11-30 09:44:08,351 DEBUG [gov.azdes.LoginManager] SMBException Occurred: 
jcifs.smb.SmbException: 
java.net.SocketException: Broken pipe
	at jrockit.net.SocketNativeIO.write(IIIZ)I(Unknown Source)
	at jrockit.net.SocketNativeIO.write(III)I(Optimized Method)
	at jrockit.io.NativeIO.write(Ljava/io/FileDescriptor;II)I(Unknown
Source)
	at java.net.AbstractSocketImpl$2.write(II)V(Optimized Method)
	at jrockit.io.NativeIOOutputStream.write([BII)V(Optimized Method)
	at
jcifs.smb.SmbTransport.doSend(Ljcifs/util/transport/Request;)V
(SmbTransport.java:414)
	at jcifs.util.transport.Transport.sendrecv
(Ljcifs/util/transport/Request;Ljcifs/util/transport/Response;J)V
(Transport.java:70)
	at
jcifs.smb.SmbTransport.send(Ljcifs/smb/ServerMessageBlock;
Ljcifs/smb/ServerMessageBlock;)V(SmbTransport.java:603)
	at
jcifs.smb.SmbSession.sessionSetup(Ljcifs/smb/ServerMessageBlock;
Ljcifs/smb/ServerMessageBlock;)V(SmbSession.java:277)
	at
jcifs.smb.SmbSession.send(Ljcifs/smb/ServerMessageBlock;
Ljcifs/smb/ServerMessageBlock;)V(SmbSession.java:233)
	at
jcifs.smb.SmbTree.treeConnect(Ljcifs/smb/ServerMessageBlock;
Ljcifs/smb/ServerMessageBlock;)V(SmbTree.java:154)
	at
jcifs.smb.SmbSession.logon(Ljcifs/UniAddress;I
Ljcifs/smb/NtlmPasswordAuthentication;)V(SmbSession.java:169)
	at
jcifs.smb.SmbSession.logon(Ljcifs/UniAddress;L
jcifs/smb/NtlmPasswordAuthentication;)V(SmbSession.java:162)
	at
gov.azdes.LoginManager.loadUserWithCredentials(Ljava/lang/String;
Ljava/lang/String;)Lorg/acegisecurity/userdetails/UserDetails;
(LoginManager.java:77)


Many thanks in advance,

-- Reny