send common certificate sets in the client hello

crypto/cert_manager.go

@@ -11,6 +11,7 @@ import (
 // CertManager manages the certificates sent by the server
 type CertManager interface {
 	SetData([]byte) error
+	GetCommonCertificateHashes() []byte
 	GetLeafCert() []byte
 	GetLeafCertHash() (uint64, error)
 	VerifyServerProof(proof, chlo, serverConfigData []byte) bool
@@ -50,6 +51,10 @@ func (c *certManager) SetData(data []byte) error {
 	return nil
 }
 
+func (c *certManager) GetCommonCertificateHashes() []byte {
+	return getCommonCertificateHashes()
+}
+
 // GetLeafCert returns the leaf certificate of the certificate chain
 // it returns nil if the certificate chain has not yet been set
 func (c *certManager) GetLeafCert() []byte {