React Native

Enumerate Server-Advertised Acceptable Client CAs

Demonstrates Socket.GetSslAcceptableClientCaDn, which returns a certificate-authority distinguished name advertised by a TLS server when it requests a client certificate.

Background. Valid indexes range from 0 through NumSslAcceptableClientCAs minus one. A client can use these names to select an appropriate client certificate.

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React Native

import { Socket } from '@chilkat/react-native'

async function chilkatExample() {
  const socket = new Socket();

  // Connect to the server using TLS.
  const bTls = true;
  const maxWaitMs = 5000;
  try {
    await socket.connectAsync('example.com', 5000, bTls, maxWaitMs);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  // After connecting to a server that requests a client certificate, enumerate the certificate-
  // authority distinguished names the server advertised as acceptable.
  const numCAs = socket.numSslAcceptableClientCAs;
  for (let i = 0; i < numCAs; i++) {
    let caDn: string;
    try {
      caDn = socket.getSslAcceptableClientCaDn(i);
    } catch {
      console.log(socket.lastErrorText);
      return;
    }

    console.log(caDn);
  }
}