Set a Multipart Part Body from BinData

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Demonstrates Rest.SetMultipartBodyBd, which sets the binary body of the selected multipart part from a BinData.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

import { BinData, Rest } from '@chilkat/react-native'

async function chilkatExample() {
  const rest = new Rest();
  const bTls = true;
  const bAutoReconnect = true;
  try {
    await rest.connectAsync('example.com', 443, bTls, bAutoReconnect);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  // The file paths are relative to the application's current working directory.  Absolute paths
  // may also be used.  Supply the paths appropriate to your own environment.

  // Select the multipart part to build, and set its header fields.
  rest.partSelector = '1';
  rest.addHeader('Content-Disposition', 'form-data; name="field1"');
  rest.addHeader('Content-Type', 'image/png');

  // Set the binary body of the selected part from a BinData.
  const bdBody = new BinData();
  try {
    bdBody.loadFile('qa_data/image.png');
  } catch {
    console.log('Failed to load the part body file.');
    return;
  }

  try {
    rest.setMultipartBodyBd(bdBody);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  let responseText: string;
  try {
    responseText = await rest.fullRequestMultipartAsync('POST', '/api/upload');
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  console.log(responseText);
}