Imports github.com/gopcua/opcua github.com/gopcua/opcua/debug github.com/gopcua/opcua/errors github.com/gopcua/opcua/ua golang.org/x/crypto/ssh/terminal Standard library imports bufio context crypto/ecdsa crypto/rand crypto/rsa crypto/tls crypto/x509 crypto/x509/pkix encoding/pem flag fmt log math/big net net/url os strings syscall time