gistfile1.txt

var WebSocketClient = require('websocket').client;
 
var client = new WebSocketClient();
 
client.on('connectFailed', function(error) {
    console.log('Connect Error: ' + error.toString());
});

client.on('connect', function(connection) {
    //console.log('WebSocket Client Connected');
    connection.on('error', function(error) {
        console.log("Connection Error: " + error.toString());
    });
    connection.on('close', function() {
        console.log('echo-protocol Connection Closed');
    });
    connection.on('message', function(message) {
        if (message.type === 'utf8') {
            console.log(message.utf8Data);
        }
    });
    
    function sendRequest() {
        if (connection.connected) {
	    var req1 = {
		id: 1,
		method: 'eth_accounts',
		params: []
	    };

	    var req2 = {
		id: 2,
		method: 'eth_blockNumber',
		params: []
	    };

	    var req3 = {
		id: 3,
		method: 'eth_getBlockByNumber',
		params: ["0x0", false]
	    };

	    var combined = JSON.stringify(req1);
	    combined += JSON.stringify(req2);
	    
            connection.sendUTF(combined);
	    connection.sendUTF(JSON.stringify(req3));
        }
    }
    sendRequest();
});
 
client.connect('ws://localhost:8546/', 'echo-protocol', 'http://localhost');