JavaScript

Receive a 32-bit Integer from a Socket

Demonstrates Socket.ReceiveInt32, which reads exactly four bytes as a signed 32-bit integer and stores the result in the ReceivedInt property. Byte order is selectable.

Background. Fixed-size integers and length prefixes are common building blocks for application-defined binary protocols. Byte order is selectable, with big-endian being network byte order.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

var socket = new CkSocket();

//  Connect to the server using TLS.
var bTls = true;
var maxWaitMs = 5000;
success = socket.Connect("example.com",5000,bTls,maxWaitMs);
if (success == false) {
    console.log(socket.LastErrorText);
    return;
}

//  Read exactly four bytes as a signed 32-bit integer and store the result in the ReceivedInt
//  property.  The argument selects byte order (true = big-endian, network byte order).
var bBigEndian = true;
success = socket.ReceiveInt32(bBigEndian);
if (success == false) {
    console.log(socket.LastErrorText);
    return;
}

console.log("Received 32-bit integer: " + socket.ReceivedInt);