Dart

Read the REST Response Header and Status Code

Demonstrates Rest.ReadResponseHeader, which reads the HTTP response status line and header fields after a staged send. The returned integer is the HTTP status code, or -1 if no response was received.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

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Dart

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;
  }

  try {
    rest.sendReqNoBody('GET', '/api/items/123');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Read the HTTP response status line and header fields.  The returned integer is the HTTP status
  // code (such as 200, 404, or 500), or -1 if no response was received.
  final statusCode = rest.readResponseHeader();
  if (statusCode < 0) {
    print(rest.lastErrorText);
    return;
  }

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