(Node.js) Send HTTP POST using non-UTF8 such as Windows-1250

Demonstrates how to specify the character encoding (charset) to be used for the body of an HTTP POST.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var http = new chilkat.Http();

    var req = new chilkat.HttpRequest();

    // Load a JSON file containing strings with Polish chars.
    var json = new chilkat.JsonObject();
    var success = json.LoadFile("qa_data/json/has_polish_chars.json");
    if (success == false) {
        console.log(json.LastErrorText);
        return;
    }

    // Add the request params expected by the server-side:
    req.AddParam("tytul",json.StringOf("tytul"));
    req.AddParam("tresc",json.StringOf("tresc"));

    // Indicate we wish to explicitly send the charset attribute in the HTTP request header.
    req.SendCharset = true;

    // Send the POST
    // You can send the POST to the URL below.  It will respond with the request body in quoted-printable format.
    // Using quoted-printable, we can easily see the binary bytes for the accented chars.
    // resp: HttpResponse
    var resp;
    resp = http.PostUrlEncoded("https://www.chilkatsoft.com/echoPost.cshtml",req);
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    console.log(http.LastHeader);
    console.log(resp.BodyStr);

    // Sample output:

    // --------------------------------------------------
    // POST /echoPost.cshtml HTTP/1.1
    // Host: www.chilkatsoft.com
    // Content-Type: application/x-www-form-urlencoded; charset=utf-8
    // Content-Length: 79
    // 
    // <pre>tytul=3DPrzyk%C5%82ad&amp;tresc=3DPrzyk%C5%82ad
    // %82oszenie</pre>
    // --------------------------------------------------

    // We can see by the %C5%82 that utf-8 was sent, because %C5%82 is the 2-byte representation of a particular Polish char.

    // -----------------------
    // However.. we can change the charset used for the HTTP request by specifying the request object's charset.

    req.SendCharset = true;
    req.Charset = "windows-1250";

    resp = http.PostUrlEncoded("https://www.chilkatsoft.com/echoPost.cshtml",req);
    if (http.LastMethodSuccess !== true) {
        console.log(http.LastErrorText);
        return;
    }

    console.log(http.LastHeader);
    console.log(resp.BodyStr);

    // Sample output...
    // You can see how the bytes used for the Polish chars are now 1-byte per char (i.e. using Windows-1250) 

    // --------------------------------------------------
    // POST /echoPost.cshtml HTTP/1.1
    // Host: www.chilkatsoft.com
    // Content-Type: application/x-www-form-urlencoded; charset=windows-1250
    // Content-Length: 70
    // 
    // <pre>tytul=3DPrzyk%B3ad&amp;tresc=3DPrzyk%B3ad
    // e</pre>
    // --------------------------------------------------


}

chilkatExample();