pkg/quic: add backward compatibility for qtls

Change-Id: I2560074ece5b61d9ddb236269172325e1b5de83e

pkg/quic/conn.go

@@ -15,6 +15,7 @@ import (
 
 	"storj.io/common/memory"
 	"storj.io/common/rpc"
+	"storj.io/storj/pkg/quic/qtls"
 )
 
 // Conn is a wrapper around a quic connection and fulfills net.Conn interface.
@@ -71,7 +72,7 @@ func (c *Conn) getStream() (quic.Stream, error) {
 
 // ConnectionState converts quic session state to tls connection state and returns tls state.
 func (c *Conn) ConnectionState() tls.ConnectionState {
-	return c.session.ConnectionState().ConnectionState
+	return qtls.ToTLSConnectionState(c.session.ConnectionState())
 }
 
 // Close closes the quic connection.

pkg/quic/qtls/go114.go

@@ -0,0 +1,29 @@
+// Copyright (C) 2021 Storj Labs, Inc.
+// See LICENSE for copying information.
+
+// +build go1.13 go1.14
+
+package qtls
+
+import (
+	"crypto/tls"
+
+	quicgo "github.com/lucas-clemente/quic-go"
+)
+
+// ToTLSConnectionState converts a quic-go connection state to tls connection
+// state.
+func ToTLSConnectionState(state quicgo.ConnectionState) tls.ConnectionState {
+	return tls.ConnectionState{
+		Version:                     state.Version,
+		HandshakeComplete:           state.HandshakeComplete,
+		DidResume:                   state.DidResume,
+		CipherSuite:                 state.CipherSuite,
+		NegotiatedProtocol:          state.NegotiatedProtocol,
+		ServerName:                  state.ServerName,
+		PeerCertificates:            state.PeerCertificates,
+		VerifiedChains:              state.VerifiedChains,
+		SignedCertificateTimestamps: state.SignedCertificateTimestamps,
+		OCSPResponse:                state.OCSPResponse,
+	}
+}

pkg/quic/qtls/go115.go

@@ -0,0 +1,18 @@
+// Copyright (C) 2021 Storj Labs, Inc.
+// See LICENSE for copying information.
+
+// +build !go1.13 !go1.14
+
+package qtls
+
+import (
+	"crypto/tls"
+
+	quicgo "github.com/lucas-clemente/quic-go"
+)
+
+// ToTLSConnectionState converts a quic-go connection state to tls connection
+// state.
+func ToTLSConnectionState(state quicgo.ConnectionState) tls.ConnectionState {
+	return state.ConnectionState
+}