private void InitBlock()
{
asn1ID = new Asn1Identifier();
asn1Len = new Asn1Length();
}
/// <summary> This thread decodes and processes RfcLdapMessage's from the server.
///
/// Note: This thread needs a graceful shutdown implementation.
/// </summary>
public virtual void Run()
{
System.String reason = "reader: thread stopping";
InterThreadException notify = null;
Message info = null;
System.IO.IOException ioex = null;
this.enclosingInstance.reader = SupportClass.ThreadClass.Current();
// Enclosing_Instance.reader = SupportClass.ThreadClass.Current();
// Console.WriteLine("Inside run:" + this.enclosingInstance.reader.Name);
try
{
for (; ; )
{
// -------------------------------------------------------
// Decode an RfcLdapMessage directly from the socket.
// -------------------------------------------------------
Asn1Identifier asn1ID;
System.IO.Stream myIn;
/* get current value of in, keep value consistant
* though the loop, i.e. even during shutdown
*/
myIn = this.enclosingInstance.in_Renamed;
if (myIn == null)
{
break;
}
asn1ID = new Asn1Identifier(myIn);
int tag = asn1ID.Tag;
if (asn1ID.Tag != Asn1Sequence.TAG)
{
continue; // loop looking for an RfcLdapMessage identifier
}
// Turn the message into an RfcMessage class
Asn1Length asn1Len = new Asn1Length(myIn);
RfcLdapMessage msg = new RfcLdapMessage(this.enclosingInstance.decoder, myIn, asn1Len.Length);
// ------------------------------------------------------------
// Process the decoded RfcLdapMessage.
// ------------------------------------------------------------
int msgId = msg.MessageID;
// Find the message which requested this response.
// It is possible to receive a response for a request which
// has been abandoned. If abandoned, throw it away
try
{
info = this.enclosingInstance.messages.findMessageById(msgId);
info.putReply(msg); // queue & wake up waiting thread
}
catch (System.FieldAccessException ex)
{
/*
* We get the NoSuchFieldException when we could not find
* a matching message id. First check to see if this is
* an unsolicited notification (msgID == 0). If it is not
* we throw it away. If it is we call any unsolicited
* listeners that might have been registered to listen for these
* messages.
*/
/* Note the location of this code. We could have required
* that message ID 0 be just like other message ID's but
* since message ID 0 has to be treated specially we have
* a separate check for message ID 0. Also note that
* this test is after the regular message list has been
* checked for. We could have always checked the list
* of messages after checking if this is an unsolicited
* notification but that would have inefficient as
* message ID 0 is a rare event (as of this time).
*/
if (msgId == 0)
{
// Notify any listeners that might have been registered
this.enclosingInstance.notifyAllUnsolicitedListeners(msg);
/*
* Was this a server shutdown unsolicited notification.
* IF so we quit. Actually calling the return will
* first transfer control to the finally clause which
* will do the necessary clean up.
*/
if (this.enclosingInstance.unsolSvrShutDnNotification)
{
notify = new InterThreadException(ExceptionMessages.SERVER_SHUTDOWN_REQ, new System.Object[]{this.enclosingInstance.host, this.enclosingInstance.port}, LdapException.CONNECT_ERROR, null, null);
return ;
}
}
else
{
}
}
if ((this.enclosingInstance.stopReaderMessageID == msgId) || (this.enclosingInstance.stopReaderMessageID == Novell.Directory.Ldap.Connection.STOP_READING))
{
// Stop the reader Thread.
return ;
}
}
}
catch (System.IO.IOException ioe)
{
ioex = ioe;
if ((this.enclosingInstance.stopReaderMessageID != Novell.Directory.Ldap.Connection.STOP_READING) && this.enclosingInstance.clientActive)
{
// Connection lost waiting for results from host:port
notify = new InterThreadException(ExceptionMessages.CONNECTION_WAIT, new System.Object[]{this.enclosingInstance.host, this.enclosingInstance.port}, LdapException.CONNECT_ERROR, ioe, info);
}
// The connection is no good, don't use it any more
this.enclosingInstance.in_Renamed = null;
this.enclosingInstance.out_Renamed = null;
}
finally
{
/*
* There can be four states that the reader can be in at this point:
* 1) We are starting TLS and will be restarting the reader
* after we have negotiated TLS.
* - Indicated by whether stopReaderMessageID does not
* equal CONTINUE_READING.
* - Don't call Shutdown.
* 2) We are stoping TLS and will be restarting after TLS is
* stopped.
* - Indicated by an IOException AND stopReaderMessageID equals
* STOP_READING - in which case notify will be null.
* - Don't call Shutdown
* 3) We receive a Server Shutdown notification.
* - Indicated by messageID equal to 0.
* - call Shutdown.
* 4) Another error occured
* - Indicated by an IOException AND notify is not NULL
* - call Shutdown.
*/
if ((!this.enclosingInstance.clientActive) || (notify != null))
{
//#3 & 4
this.enclosingInstance.shutdown(reason, 0, notify);
}
else
{
this.enclosingInstance.stopReaderMessageID = Novell.Directory.Ldap.Connection.CONTINUE_READING;
}
}
this.enclosingInstance.deadReaderException = ioex;
this.enclosingInstance.deadReader = this.enclosingInstance.reader;
this.enclosingInstance.reader = null;
return ;
}
private void InitBlock()
{
asn1ID = new Asn1Identifier();
asn1Len = new Asn1Length();
}
