Send a Staged REST Request with a Binary Body

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Demonstrates Rest.SendReqBd, which sends a request whose binary body is read from a BinData, then reads the response in separate steps.

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 'package:chilkat/chilkat.dart';

void main() {
  final rest = CkRest();
  final bTls = true;
  final bAutoReconnect = true;
  try {
    rest.connect('example.com', 443, bTls, bAutoReconnect);
  } on ChilkatException catch (e) {
    print(e.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.

  // Send a request whose binary body is read from a BinData.
  final bdBody = CkBinData();
  try {
    bdBody.loadFile('qa_data/image.png');
  } on ChilkatException {
    print('Failed to load the request body file.');
    return;
  }

  rest.addHeader('Content-Type', 'image/png');

  try {
    rest.sendReqBd('PUT', '/api/images/1', bdBody);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // After sending, read the response status line and header fields.  The return value is the HTTP
  // status code, or -1 if no response was received.
  final statusCode = rest.readResponseHeader();
  if (statusCode < 0) {
    print(rest.lastErrorText);
    return;
  }

  print('Response status code: $statusCode');

  // Read the response body as text.
  final String responseBody;
  try {
    responseBody = rest.readRespBodyString();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print(responseBody);
}