proposal: crypto/x509: Export CertPool Length

[zapisanchez]

Proposal Details

Actually the only way to know if you have some into a certpool is

if (cp.Equal(&x509.CertPool{})) {
fmt.Printf("CertPool is empty")
}

This way, we only can now if empty or not, but we don't now any about the number of certificates added.

I propose to export the len method

func (s *CertPool) Len() int {
	if s == nil {
		return 0
	}
return len(s.lazyCerts)
}

[seankhliao]

this would be at best misleading. if using the system verifier, the size works be zero but there are roots that can be used.