const crypto/tls.extensionCertificateAuthorities

3 uses

	crypto/tls (current package)
		common.go#L120: 	extensionCertificateAuthorities  uint16 = 47
		handshake_messages.go#L1183: 				b.AddUint16(extensionCertificateAuthorities)
		handshake_messages.go#L1253: 		case extensionCertificateAuthorities: