Dart

Add Parameters to Multipart Form-Data POSTs

Parameters (name=value) can be added to multipart/form-data POSTs (such as for file uploads) by using the AddParam method. This example sends the following HTTP POST

POST /something HTTP/1.1
Content-Type: multipart/form-data; boundary=------------010201080703010401070605
Host: domain
Content-Length: 560

--------------010201080703010401070605
Content-Disposition: form-data; name="name"

Joe
--------------010201080703010401070605
Content-Disposition: form-data; name="age"

25
--------------010201080703010401070605
Content-Disposition: form-data; name="fileA"; filename="fileA.txt"
Content-Type: text/plain

This is the contents of file A
--------------010201080703010401070605
Content-Disposition: form-data; name="fileB"; filename="fileB.txt"
Content-Type: text/plain

This is the contents of file B
--------------010201080703010401070605--

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final req = CkHttpRequest();

  req.httpVerb = 'POST';
  req.path = '/something';
  req.contentType = 'multipart/form-data';

  req.addParam('name', 'Joe');
  req.addParam('age', '25');

  req.addStringForUpload('fileA', 'fileA.txt', 'This is the contents of file A', 'utf-8');
  req.addStringForUpload('fileB', 'fileB.txt', 'This is the contents of file B', 'utf-8');

  print(req.generateRequestText());
}