XMLRPC Client

This block will create an XMLRPC client. The client will execute the callback on the server when the variable is changed.

The callback should be a the name of a function registered on the server. The variable should be an expression containing a the name of a variable in flow graph.

Parameters

(R): Run-time adjustable

Address

Address of the server

default: localhost

Port

Port of the server

default: 8080

Callback (R)

Name of the distant function

default: set_

Variable (R)

Name of the local variable

default: <blank>

Example Flowgraph

This flowgraph is for version 3.9+

The 'siggen_controller_xmlrpc_client.grc' flowgraph should be used in conjunction with the 'siggen_xmlrpc_server.grc' flowgraph. Both are located in the 'gr-blocks/examples/xmlrpc' directory in GNURadio. Upon execution this flowgraph opens a GUI window with a single GUI Range slider. When the slider in the client flowgraph is moved, the XMLRPC Client Block sends SET messages to the specified XMLRPC server. If the server is running and can be accessed on the specified IP address/port, the SET commands will change the value of the frequency ('rmt_freq') variable in the server flowgraph. This will be reflected in the GUI window on the server flowgraph (see XMLRPC_Server).

Before Client Side GUI is Changed

After Client Side GUI is Changed

Source Files

Block definition

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