Get the IMAP Server's TLS Certificate

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Demonstrates the Chilkat Imap.GetServerCert method, which retrieves the certificate the IMAP server presented on the current (or most recent) TLS connection. The only argument is a Cert object that receives the certificate. This example prints the subject and issuer common names.

Background: Chilkat already validates the server certificate as part of the TLS handshake, but this method lets an application inspect it directly — to log the issuer, display connection details, implement certificate pinning, or apply an application-specific trust policy. The Cert object exposes the full certificate, including subject, issuer, validity dates, and the public key.

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    success := false

    //  Demonstrates the Imap.GetServerCert method, which retrieves the certificate presented by the
    //  IMAP server on the current TLS connection.  The only argument is a Cert object that receives
    //  the certificate.

    imap := chilkat.NewImap()

    imap.SetSsl(true)
    imap.SetPort(993)

    success = imap.Connect("imap.example.com")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    success = imap.Login("user@example.com","myPassword")
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        return
    }

    //  Get the server's TLS certificate for inspection or diagnostics.
    cert := chilkat.NewCert()
    success = imap.GetServerCert(cert)
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        cert.DisposeCert()
        return
    }

    fmt.Println("Server certificate subject: ", cert.SubjectCN())
    fmt.Println("Issued by: ", cert.IssuerCN())

    success = imap.Disconnect()
    if success == false {
        fmt.Println(imap.LastErrorText())
        imap.DisposeImap()
        cert.DisposeCert()
        return
    }


    imap.DisposeImap()
    cert.DisposeCert()