TUN-6938: Force h2mux protocol to http2 for named tunnels

Going forward, the only protocols supported will be QUIC and HTTP2,
defaulting to QUIC for "auto". Selecting h2mux protocol will be forcibly
upgraded to http2 internally.

supervisor/tunnel_test.go

@@ -18,7 +18,7 @@ type dynamicMockFetcher struct {
 	err              error
 }
 
-func (dmf *dynamicMockFetcher) fetch() connection.PercentageFetcher {
+func (dmf *dynamicMockFetcher) fetch() edgediscovery.PercentageFetcher {
 	return func() (edgediscovery.ProtocolPercents, error) {
 		return dmf.protocolPercents, dmf.err
 	}
@@ -32,24 +32,22 @@ func TestWaitForBackoffFallback(t *testing.T) {
 	}
 	log := zerolog.Nop()
 	resolveTTL := time.Duration(0)
-	namedTunnel := &connection.NamedTunnelProperties{}
 	mockFetcher := dynamicMockFetcher{
-		protocolPercents: edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "http2", Percentage: 100}},
+		protocolPercents: edgediscovery.ProtocolPercents{edgediscovery.ProtocolPercent{Protocol: "quic", Percentage: 100}},
 	}
-	warpRoutingEnabled := false
 	protocolSelector, err := connection.NewProtocolSelector(
 		"auto",
-		warpRoutingEnabled,
-		namedTunnel,
+		"",
+		false,
+		false,
 		mockFetcher.fetch(),
 		resolveTTL,
 		&log,
-		false,
 	)
 	assert.NoError(t, err)
 
 	initProtocol := protocolSelector.Current()
-	assert.Equal(t, connection.HTTP2, initProtocol)
+	assert.Equal(t, connection.QUIC, initProtocol)
 
 	protoFallback := &protocolFallback{
 		backoff,
@@ -100,12 +98,12 @@ func TestWaitForBackoffFallback(t *testing.T) {
 	// The reason why there's no fallback available is because we pick a specific protocol instead of letting it be auto.
 	protocolSelector, err = connection.NewProtocolSelector(
 		"quic",
-		warpRoutingEnabled,
-		namedTunnel,
+		"",
+		false,
+		false,
 		mockFetcher.fetch(),
 		resolveTTL,
 		&log,
-		false,
 	)
 	assert.NoError(t, err)
 	protoFallback = &protocolFallback{backoff, protocolSelector.Current(), false}