This recipe relies on running the Supervisor daemon (configured with rpcinterface) in the background. Supervisor launches another XML-RPC server, as follows: 7_2_multithreaded_multicall_xmlrpc_server.py.

The client code has a query_supervisr() method, which takes an argument for the Supervisor socket. In this method, an instance of SupervisorTransport is created with the Unix socket path. Then, an XML-RPC server proxy is created by instantiating the ServerProxy() class of xmlrpclib by passing the server address and previously created transport.

The XML-RPC server proxy then calls the Supervisor's getAllProcessInfo() method, which prints the process information of the child process. This process includes pid, statename, description, and so on.