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WAMP Socket Cluster

Merges RPC ideas of WAMP protocol with good performance of SocketCluster.

As SocketCluster is not compatible with WAMP protocol (as e.g. AutobahnJS) this library provides the wrapper for both SocketClient (WAMPClient) and SocketServer (WAMPServer) and enables RPC web sockets usage.

Benefits

• WAMP protocol style function calls (socket.call(...).then(...)).
• Addresses the problem of response order in case of subscribing to an event after peer sends many individual requests.

Installation

npm install wamp-socket-cluster

Usage

• Initialize server side

const rpcEndpoints = { multiplyByTwo: num => num * 2 };
scServer.on('connection', socket => {
    wampServer.upgradeToWAMP(socket);
    wampServer.reassignEndpoints(rpcEndpoints);
});

• Initialize client side

const socket = scClient.connect(options);
wampClient.upgradeToWAMP(this.socket);
const randNumber =  Math.floor( Math.random() * 5 );
socket.call('multiplyByTwo', 2)
      .then(result => console.log(`RPC result: ${randNumber} * 2 = ${result}`))
      .catch(err => console.error('RPC multiply by two error'));

Example Usage

A simple but complete example has been implemented. It includes socket cluster initialization, plus registration of RPC both at client and server side.

Test

• npm test

Authors

• Maciej Baj [e-mail]

License

Copyright (c) 2017 Lisk Foundation

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.