Constructor for the Protocol Base

Destroy the Protocol Base

This function panics with a panic number of EDoesNotBindBelow.

This function panics with a panic number of EDoesNotBindAbove.

Called by derived classes when an acceptable closedown condition has been reached.

Derived classes should not override this function.

CloseNow() for more details.

Closes a client connection.

The default implementation decrements the reference count and calls CloseNow() if no clients are connected.

Any implementations by derived classes should call this base class implementation.

Closes the protocol.

Called by Close() when all clients referencing a protocol have disconnected.

The default implementation simply deletes the object. Derived classes can implement this function to provide a delayed closedown: for example, to allow reliable protocols to ensure that all data has drained from the stack before it is deleted. When an acceptable closedown condition has been reached, the protocol should call CanClose().

This function panics with a panic number of EErrorCallNotHandled unless the error is KErrCancel which is simply ignored.

Gets options for the protocol on behalf of socket server clients.

The option parameter is protocol-defined - this is a generic API. The protocol is passed in because you might get GetOption() calls from multiple bindees - this is actually more meaningful for SetOption().

Fills in the passed TServerProtocolDesc with data describing the protocol.

Initialises a protocol before any binding is performed. A protocol can override it to create any further resources it may require - this might include allocating buffers, opening devices or reading more configuration information.

If the protocol encounters any errors it should leave.

This function panics with a panic number of EBadHostResolver.

This function panics with a panic number of EBadNetDBRequest.

Creates a new service access point.

If the protocol cannot create the CServProviderBase for any reason, it should leave.

This function panics with a panic number of EBadServiceResolver.

Opens a client connection.

The default implementation simply increments the reference count.

Any implementations by derived classes should call this base class implementation.

This function panics with a panic number of ECantProcessMbufs.

This function panics with a panic number of ECantProcessDescriptors.

Get our family - through the manager ref.

Reference counting by protocols created by protocol families.

This function panics with a panic number of ECantSendMBufs.

This function panics with a panic number of ECantSendDescriptors.

Sets options for the protocol on behalf of socket server clients.

The option parameter is protocol-defined - this is a generic API.

The protocol is passed in because you might get SetOption() calls from multiple bindees and need to distinguish who is setting what.

Indicates to a protocol that all binding has completed successfully and it can start processing datagrams. This is mainly of interest to the lowest levels of a protocol stack which would queue a read on the network media device driver in response to this call.

If a protocol cannot start to process data (for example it may not have bound correctly) it should leave.

Indicates that data can now be sent. Implementations can call bound higher-level protocols and service access points in turn.

With Send(), this function forms a flow control pair. A zero return from a Send() should flow control off the calling protocol. StartSending() acts as a flow control on.

Gets a TPtrC to the protocol's tag name. The default implementation returns the tag passed to Init().

delete Protocol Base if ref count <0 Used from Protocol manager cleanup stack entries