Srushtika

ws.addEventListener('message', event => {
  // The `event` object is a typical DOM event object, and the message data sent
  // by the server is stored in the `data` property
  console.log('Received:', event.data);
});

Srushtika

const ws = new WebSocket('ws://localhost:3210', ['json', 'xml']);
ws.addEventListener('open', () => {
  const data = { message: 'Hello from the client!' }
  const json = JSON.stringify(data);
  ws.send(json);
});
ws.addEventListener('message', event => {
  const data = JSON.parse(event.data);
  console.log(data);
});

Srushtika

socket.on('data', buffer => {
  const message = parseMessage(buffer);
  if (message) {
  // For our convenience, so we can see what the client sent
  console.log(message);
  // We'll just send a hardcoded message in this example 
  socket.write(constructReply({ message: 'Hello from the server!' })); 
  } else if (message === null) { 
      console.log('WebSocket connection closed by the client.'); 
  }

Srushtika

let maskingKey;
if (isMasked) {
  maskingKey = buffer.readUInt32BE(currentOffset);
  currentOffset += 4;
}

Srushtika

socket.on('data', buffer => {
  const message = parseMessage(buffer);
  if (message) {
    // For our convenience, so we can see what the client sent
    console.log(message);
    // We'll just send a hardcoded message in this example 
    socket.write(constructReply({ message: 'Hello from the server!' })); 
  } else if (message === null) { 
    console.log('WebSocket connection closed by the client.'); 
  }

Srushtika

curl -X POST https://rest.ably.io/channels/fox-gin/messages \
  -u '6QdTiA.O9vBCw:8glD3fRTNhSEVJC5' \
  --data 'name=greeting&data=hello'

Srushtika

#!/bin/bash
if(! (gem list -i iStats))
then
    gem install iStats
    exit 0
fi

myDeviceTemp=$(istats | awk '{if($1=="CPU") { print "CPUtemp:" $3 }; } END { }')

myBatteryTemp=$(istats | awk '{if($1=="Battery") { print "BatteryTemp:" $3 }; } END { }')

Srushtika

function constructReply (data) {
  // Convert the data to JSON and copy it into a buffer
  const json = JSON.stringify(data)
  const jsonByteLength = Buffer.byteLength(json);
  // Note: we're not supporting > 65535 byte payloads at this stage 
  const lengthByteCount = jsonByteLength < 126 ? 0 : 2; 
  const payloadLength = lengthByteCount === 0 ? jsonByteLength : 126; 
  const buffer = Buffer.alloc(2 + lengthByteCount + jsonByteLength); 
  // Write out the first byte, using opcode `1` to indicate that the message 
  // payload contains text data 

Srushtika

function parseMessage (buffer) {
  const firstByte = buffer.readUInt8(0);
  const isFinalFrame = Boolean((firstByte >>> 7) & 0×1); 
  const [reserved1, reserved2, reserved3] = [ Boolean((firstByte >>> 6) & 0×1), Boolean((firstByte >>> 5) & 0×1), Boolean((firstByte >>> 4) & 0×1) ]; 
  const opCode = firstByte & 0xF; 
  // We can return null to signify that this is a connection termination frame 
  if (opCode === 0×8) 
     return null; 
  // We only care about text frames from this point onward 
  if (opCode !== 0×1) 

Srushtika

[{
  id: <string>,
  clientId: <optional, string>
  platform: <string>
  formFactor: <string>,
  metadata: <object>,
  updateToken: <string>,
  push: {
    recipient: {
      transportType: <string>,