rpclibrary/test/TestBackend.ts

import { RPCServer } from '../src/Backend'
import { SubscriptionResponse, ErrorResponse, SuccessResponse } from '../src/Responses'
import { HookRPC } from '../src/Types'

let subcallback

new RPCServer(20000, [{
    name: "HelloWorldRPCGroup",
    exportRPCs: () => [
        {
            name: 'echo',
            call: async (s:string) => s,
        },{
            name: 'simpleSubscribe',
            hook: async(callback) => {
                subcallback =  callback
                return new SubscriptionResponse(""+Math.random())
            }
        },{
            name: 'subscribe',
            hook: async (callback):Promise<any> => {
                subcallback = callback
                return new SubscriptionResponse(""+Math.random())
            },
            onClose: (res:SubscriptionResponse, rpc:HookRPC) => { 
                console.log("Specific close handler for", rpc.name, res)
                subcallback = null 
            },
            onCallback: (...args) => { console.log.apply(console, args) }
        },
        function add(...args:number[]):number {return args.reduce((a,b)=>a+b, 0)},
        function triggerCallback(...messages:any[]):number {return subcallback.apply({}, messages)},
    ]
}])

try{
    new RPCServer(20001, [{
        name: "bad",
        exportRPCs: ()  => [
            (aaa,bbb,ccc) => { return aaa+bbb+ccc }
        ]
    }])
}catch(badRPCError){
    console.log("expected bad-RPC error happened: "+ !!badRPCError, String(badRPCError))
}