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Node.js Examples

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(Node.js) REST Send multipart/form-data

Demonstrates how to send a multipart/form-data HTTP request.

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-node11-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node11-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node11-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node11-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node11-linux64');
    }
} else if (os.platform() == 'darwin') {
    var chilkat = require('@chilkat/ck-node11-macosx');
}

function chilkatExample() {

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

    var rest = new chilkat.Rest();

    // Connect to the destination web server.
    var bTls = true;
    var port = 443;
    var bAutoReconnect = true;
    var success = rest.Connect("www.somewebserver.com",port,bTls,bAutoReconnect);

    // This example will send the following multipart/form-data request.
    // The Content-Length is automatically computed and added by Chilkat.
    // It will be different than what is shown here.
    // The boundary string is also generated by Chilkat and will be different
    // than shown below.

    // 	POST /some_path HTTP/1.1
    // 	Content-Type: multipart/form-data; boundary=---------------------------735323031399963166993862150
    // 	Content-Length: 834
    // 
    // 	-----------------------------735323031399963166993862150
    // 	Content-Disposition: form-data; name="text1"
    // 
    // 	text 123 abc
    // 	-----------------------------735323031399963166993862150
    // 	Content-Disposition: form-data; name="text2"
    // 
    // 	xyz
    // 	-----------------------------735323031399963166993862150
    // 	Content-Disposition: form-data; name="file1"; filename="a.txt"
    // 	Content-Type: text/plain
    // 
    // 	Content of a.txt.
    // 
    // 	-----------------------------735323031399963166993862150
    // 	Content-Disposition: form-data; name="file2"; filename="a.html"
    // 	Content-Type: text/html
    // 
    // 	<!DOCTYPE html><title>Content of a.html.</title>
    // 
    // 	-----------------------------735323031399963166993862150
    // 	Content-Disposition: form-data; name="file3"; filename="starfish.jpg"
    // 	Content-Type: image/jpeg
    // 
    // 	binary data goes here
    // 	-----------------------------735323031399963166993862150--

    // Set the Content-Type for the topmost MIME part.
    rest.AddHeader("Content-Type","multipart/form-data");

    // Specify each part of the request.
    rest.PartSelector = "1";
    rest.AddHeader("Content-Disposition","form-data; name=\"text1\"");
    rest.SetMultipartBodyString("text 123 abc");

    rest.PartSelector = "2";
    rest.AddHeader("Content-Disposition","form-data; name=\"text2\"");
    rest.SetMultipartBodyString("xyz");

    rest.PartSelector = "3";
    rest.AddHeader("Content-Disposition","form-data; name=\"file1\"; filename=\"a.txt\"");
    rest.AddHeader("Content-Type","text/plain");
    rest.SetMultipartBodyString("Content of a.txt.");

    rest.PartSelector = "4";
    rest.AddHeader("Content-Disposition","form-data; name=\"file2\"; filename=\"a.html\"");
    rest.AddHeader("Content-Type","text/html");
    var sbHtml = new chilkat.StringBuilder();
    sbHtml.LoadFile("qa_data/html/a.html","utf-8");
    rest.SetMultipartBodySb(sbHtml);

    rest.PartSelector = "5";
    rest.AddHeader("Content-Disposition","form-data; name=\"file3\"; filename=\"starfish.jpg\"");
    rest.AddHeader("Content-Type","image/jpeg");
    var jpgBytes = new chilkat.BinData();
    jpgBytes.LoadFile("qa_data/jpg/starfish.jpg");
    rest.SetMultipartBodyBd(jpgBytes);

    var responseBody = rest.FullRequestMultipart("POST","/some_path");
    if (rest.LastMethodSuccess !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    // ...
    // ...

    // Clear the REST object for any subsequent requests..
    rest.ClearAllHeaders();
    rest.ClearAllParts();
    rest.PartSelector = "";

}

chilkatExample();

 

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