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# *other-client-port*

Variable, net.rpc package

This variable is bound in a client image to an RPC port connected to the control process. It can be used in a form such as

       (with-remote-port (*other-client-port*) ...)

to call functions in the control process. (See with-remote-port.)

See Running several communicating Allegro CL images in rpc.html for information on running several Lisp images.

# *rpc-port*

Variable, net.rpc package

The value of this variable identifies the default RPC port in the dynamic environment.

The variable is bound explicitly by the macro with-remote-port.

When an in-bound remote call is evaluated, the dynamic environment binds this variable to the port which received the call.

In user programs, it is unwise to bind or assign a value to this variable, whether by let-binding, lambda-binding, or using setf or setq.

An out-bound remote call is identified as a callback when the destination port is eq to the default port, and the default port has not been re-bound to some other port in the dynamic environment.

    (defun remotely-called-function ()
        (let ((in-port *rpc-port*))
          (rcall 'foo)  ;; this is a callback
          (with-remote-port (in-port)
                (rcall 'bar)  ;; this is a callback
                )
          (with-remote-port (other-port)
                (with-remote-port (in-port)
                   (rcall 'bar)  ;; this is NOT a callback
                   )
                )
          (rcall 'bar)  ;; this is a callback
          ))

See also rpc.html for general information on the Remote Procedure Call utility in Allegro CL.

# *rpc-shared-quantum*

Variable, net.rpc package

The value of this variable is a time interval used by some RPC operations when a short delay is needed. It is normally set to a value slightly larger than the shortest Lisp sleep interval. The default value is 0.08 seconds.

Copyright (c) Franz Inc. Lafayette, CA., USA. All rights reserved.

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| Allegro CL version 11.0