Get the Server Certificate from a TLS Connection

See more Socket/SSL/TLS Examples

Demonstrates Socket.GetServerCert, which copies the certificate presented by the remote TLS server into a Cert object for inspection.

import { Cert, 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;
  }

  // Copy the certificate presented by the remote TLS server, then inspect it.  This can be used to
  // validate the server's identity.
  const cert = new Cert();
  try {
    socket.getServerCert(cert);
  } catch {
    console.log(socket.lastErrorText);
    return;
  }

  console.log(`Server certificate subject: ${cert.subjectCN}`);
  console.log(`Issued by: ${cert.issuerCN}`);
}