JavaScript

Receive Text from a Socket into a StringBuilder

Demonstrates Socket.ReceiveSb, which receives text, decodes it using StringCharset, and appends it to a StringBuilder.

Background. Text send and receive operations encode and decode bytes using the StringCharset property. For plain ASCII or UTF-8 protocols, setting StringCharset to utf-8 is a safe default.

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.  The 3rd argument enables the TLS handshake after the TCP
//  connection succeeds; the 4th is the maximum time to wait, in milliseconds.
var bTls = true;
var maxWaitMs = 5000;
success = socket.Connect("example.com",5000,bTls,maxWaitMs);
if (success == false) {
    console.log(socket.LastErrorText);
    return;
}

//  StringCharset controls the character encoding used when sending and receiving text.
socket.StringCharset = "utf-8";
//  Send a request using a simple application-defined text protocol in which each message ends with a
//  CRLF.
var command = "STATUS\r\n";
success = socket.SendString(command);
if (success == false) {
    console.log(socket.LastErrorText);
    return;
}

//  Receive text and append it to a StringBuilder, decoding using StringCharset.
var sb = new CkStringBuilder();
success = socket.ReceiveSb(sb);
if (success == false) {
    console.log(socket.LastErrorText);
    return;
}

var responseText = sb.GetAsString();
if (sb.LastMethodSuccess == false) {
    console.log(sb.LastErrorText);
    return;
}

console.log(responseText);