RPC promises client to parallel Services promises client

[conorcaregraf]

create an RPC equivalent of services client - Select Patient, ... etc etc.

• rpcConsole/rpcConsole.js
• uses promises just like console.js BUT
• calls RPCs (ie/ logs in, selects a patient, creates a problem ...)
• to see what RPCs:
  • see login sequence in capture.txt
  • get an RPC equivalent of each of the service calls in console.js. The problem domain tests have them (read problem etc).

[conorcaregraf]

Start with reworking the Test RPC Clients

Background: RPC invocation involves connecting to an endpoint and then sending RPC protocol messages. That means you need a utility to both format and parse those messages. The test RPC clients have just this setup. Before trying Problem create/read etc, just neaten a basic test client to get [a] logon, [b] do something, [c] logoff to work.

The test RPC clients:

• test IM HERE logs on and then sends IM HERE over and over
• test DATE logs on and then sends _ORWUDT over and over.

TODO:

• [ ] get these two examples to run
• [ ] copy IM HERE to rpcConsole and making it just do one IM HERE and then log out. This will mean copying the testClients utility into rpcConsole.
• [ ] rework the test client utility for just ONE CLIENT. It was written to mimic having many clients. We don't want that complication in our example. We want a simple rpcClientUtil.js that allows RPC invocation. Take the core code of the multi-client utility - https://github.com/vistadataproject/nodeVISTA/blob/master/testClientFramework/TestClientFramework.js#L61 - to make that work.

[conorcaregraf]

marking done - one small change left but basically there.