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.

func chilkatTest() {
    var success: Bool = false

    let socket = CkoSocket()!

    //  Connect to the server using TLS.
    var bTls: Bool = true
    var maxWaitMs: Int = 5000
    success = socket.connect(hostname: "example.com", port: 5000, ssl: bTls, maxWaitMs: maxWaitMs)
    if success == false {
        print("\(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.
    let cert = CkoCert()!
    success = socket.getServerCert(cert: cert)
    if success == false {
        print("\(socket.lastErrorText!)")
        return
    }

    print("Server certificate subject: \(cert.subjectCN!)")
    print("Issued by: \(cert.issuerCN!)")

}