JSPM

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  • License MIT

Yet Another Server Library which Implementation of JSON-RPC 2.0 over WebSocket for Node.js (w/ TypeScript)

Package Exports

  • jsonrpc2-ws

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (jsonrpc2-ws) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

jsonrpc2-ws

Yet Another Server Library which Implementation of JSON-RPC 2.0 over WebSocket for Node.js (w/ TypeScript)

npm build

Installation

npm install jsonrpc2-ws --save
# or
yarn add jsonrpc2-ws

How to use

Standalone

// TypeScript
import { Server as RPCServer } from "jsonrpc2-ws";

const rpc = new RPCServer({
    wss: {
        port: 3000
    }
});

rpc.on("connection", (socket, req) => {
    console.log(`${socket.id} connected!`);

    socket.on("close", () => {
        console.log(`${socket.id} disconnected!`);
    });

    rpc.broadcast("count", { count: rpc.sockets.size });

    // room
    socket.joinTo("general");
    rpc.notifyTo("general", "general.count", { count: rpc.in("general").size });
});

rpc.methods.set("nick", (socket, params) => {
    socket.data.set("nick", params.nick);
});

rpc.methods.set("join", (socket, params) => {
    if (socket.joinTo(params.ch) === true) {
        rpc.notifyTo(params.ch, `${params.ch}.count`, { count: rpc.in(params.ch).size });
        return;
    } else {
        throw new Error("Already joined");
    }
});

rpc.methods.set("chat", (socket, params) => {
    if (!params || !params.ch || !params.message) {
        throw new Error("Invalid request");
    }

    rpc.notifyTo(params.ch, "chat", {
        time: Date.now(),
        id: socket.id,
        nick: socket.data.get("nick") || "anonymous",
        ch: params.ch,
        message: params.message
    });
});
// note: rpc method supports async/await or Promise.

w/ HTTP server

// TypeScript
import * as http from "http";
import { Server as RPCServer } from "jsonrpc2-ws";

const server = http.createServer();
const rpc = new RPCServer({ wss: { server } });

w/ Express

// TypeScript
import express = require("express");
import * as http from "http";
import { Server as RPCServer } from "jsonrpc2-ws";

const app = express();
const server = http.createServer(app);
const rpc = new RPCServer({ wss: { server } });

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License

MIT