Get a REST Response Header by Name

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Demonstrates Rest.ResponseHdrByName, which returns the value of a response header field by name. Header field names are case-insensitive.

import { 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;
  }

  try {
    await rest.sendReqNoBodyAsync('GET', '/api/items/123');
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  const statusCode = await rest.readResponseHeaderAsync();
  if (statusCode < 0) {
    console.log(rest.lastErrorText);
    return;
  }

  // Return the value of a response header field by name.  Header field names are case-insensitive.
  let contentType: string;
  try {
    contentType = rest.responseHdrByName('Content-Type');
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  console.log(`Content-Type: ${contentType}`);
}