InterfaceIRpcHandler

Defines how to support sending requests on the network and emitting events on the network

NOTE: In JSONRPC jargon, a "request" is made to a "method". In our code we talk about "request types", but JSONRPC doesn't have the notion of a "request type". However, a "request type" is really just the name of a method in JSONRPC. So "method names" and "request types" are treated as the same thing. Similarly, what we call a "request handler" is the same thing as a "method" that has been registered with a JSONRPC server.

interface IRpcHandler {
    connect: ((localEventHandler: EventHandler) => Promise<boolean>);
    connectionStatus: ConnectionStatus;
    disconnect: (() => Promise<void>);
    emitEventOnNetwork: EventHandler;
    request: ((requestType: `${string}:${string}`, requestParams: RequestParams) => Promise<JSONRPCResponse>);
}

Hierarchy (view full)

Implemented by

Properties

connect connectionStatus disconnect emitEventOnNetwork request

Properties

connect

connect: ((localEventHandler: EventHandler) => Promise<boolean>)

Sets up the RPC handler by populating connector info, setting up event handlers, and doing one of the following:

  • On clients: connecting to the server
  • On servers: opening an endpoint for clients to connect

Type declaration

    • (localEventHandler): Promise<boolean>

    • Parameters

      • localEventHandler: EventHandler

        Function that handles events from the server by accepting an eventType and an event and emitting the event locally. Used when receiving an event over the network.

      Returns Promise<boolean>

      Promise that resolves when finished connecting

connectionStatus

connectionStatus: ConnectionStatus

Whether this connector is setting up or has finished setting up its connection and is ready to communicate on the network

disconnect

disconnect: (() => Promise<void>)

Disconnects from the connection:

  • On clients: disconnects from the server
  • On servers: disconnects from all clients and closes its connection endpoint

emitEventOnNetwork

emitEventOnNetwork: EventHandler

Sends an event to other processes. Does NOT run the local event subscriptions as they should be run by NetworkEventEmitter after sending on network.

Param: eventType

Unique network event type for coordinating between processes

Param: event

Event data to emit on the network

request

request: ((requestType: `${string}:${string}`, requestParams: RequestParams) => Promise<JSONRPCResponse>)

Send a request and resolve after receiving a response

Type declaration

    • (requestType, requestParams): Promise<JSONRPCResponse>

    • Parameters

      • requestType: `${string}:${string}`

        Type of request (or "method" in JSONRPC jargon) to call

      • requestParams: RequestParams

        Parameters associated with this request

      Returns Promise<JSONRPCResponse>

      Promise that resolves to a JSONRPCSuccessResponse or JSONRPCErrorResponse message

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