diff --git a/VERSION b/VERSION
index 26d99a2..fb467b1 100755
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-5.2.1
+5.2.2
\ No newline at end of file
diff --git a/go.mod b/go.mod
index b70b935..0eee118 100755
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,6 @@
 
 require (
 	github.com/golang/protobuf v1.5.2
-	google.golang.org/genproto v0.0.0-20211207154714-918901c715cf
-	google.golang.org/grpc v1.42.0
+	google.golang.org/genproto v0.0.0-20220208230804-65c12eb4c068
+	google.golang.org/grpc v1.44.0
 )
diff --git a/go.sum b/go.sum
index 34b9655..623ad67 100644
--- a/go.sum
+++ b/go.sum
@@ -1,16 +1,13 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
-github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI=
-github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
 github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
@@ -19,7 +16,6 @@
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
 github.com/envoyproxy/go-control-plane v0.9.10-0.20210907150352-cf90f659a021/go.mod h1:AFq3mo9L8Lqqiid3OhADV3RfLJnjiw63cSpi+fDTRC0=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -51,7 +47,6 @@
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6LYCDYWNEvQ=
-github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -104,17 +99,16 @@
 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
 google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20211207154714-918901c715cf h1:PSEM+IQFb9xdsj2CGhfqUTfsZvF8DScCVP1QZb2IiTQ=
-google.golang.org/genproto v0.0.0-20211207154714-918901c715cf/go.mod h1:5CzLGKJ67TSI2B9POpiiyGha0AjJvZIUgRMt1dSmuhc=
+google.golang.org/genproto v0.0.0-20220208230804-65c12eb4c068 h1:pwzFiZfBTH/GjBWz1BcDwMBaHBo8mZvpLa7eBKJpFAk=
+google.golang.org/genproto v0.0.0-20220208230804-65c12eb4c068/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A=
-google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.44.0 h1:weqSxi/TMs1SqFRMHCtBgXRs8k3X39QIDEZ0pRcttUg=
+google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
diff --git a/go/adapter_service/adapter_service.pb.go b/go/adapter_service/adapter_service.pb.go
index e8aa01c..31f5673 100644
--- a/go/adapter_service/adapter_service.pb.go
+++ b/go/adapter_service/adapter_service.pb.go
@@ -36,60 +36,61 @@
 }
 
 var fileDescriptor_038e6ec340f67698 = []byte{
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+	// 853 bytes of a gzipped FileDescriptorProto
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+	0x7f, 0x31, 0xcf, 0xbe, 0xca, 0xd5, 0x27, 0xff, 0x07, 0x00, 0x00, 0xff, 0xff, 0xbd, 0x54, 0xa5,
+	0xf6, 0x59, 0x0b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -106,7 +107,7 @@
 type AdapterServiceClient interface {
 	// GetHealthStatus is used by an AdapterService client to verify connectivity
 	// to the gRPC server hosting the AdapterService service
-	GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error)
+	GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (AdapterService_GetHealthStatusClient, error)
 	// Device
 	AdoptDevice(ctx context.Context, in *voltha.Device, opts ...grpc.CallOption) (*empty.Empty, error)
 	ReconcileDevice(ctx context.Context, in *voltha.Device, opts ...grpc.CallOption) (*empty.Empty, error)
@@ -161,13 +162,35 @@
 	return &adapterServiceClient{cc}
 }
 
-func (c *adapterServiceClient) GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error) {
-	out := new(health.HealthStatus)
-	err := c.cc.Invoke(ctx, "/adapter_service.AdapterService/GetHealthStatus", in, out, opts...)
+func (c *adapterServiceClient) GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (AdapterService_GetHealthStatusClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_AdapterService_serviceDesc.Streams[0], "/adapter_service.AdapterService/GetHealthStatus", opts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &adapterServiceGetHealthStatusClient{stream}
+	return x, nil
+}
+
+type AdapterService_GetHealthStatusClient interface {
+	Send(*common.Connection) error
+	Recv() (*health.HealthStatus, error)
+	grpc.ClientStream
+}
+
+type adapterServiceGetHealthStatusClient struct {
+	grpc.ClientStream
+}
+
+func (x *adapterServiceGetHealthStatusClient) Send(m *common.Connection) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *adapterServiceGetHealthStatusClient) Recv() (*health.HealthStatus, error) {
+	m := new(health.HealthStatus)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
 }
 
 func (c *adapterServiceClient) AdoptDevice(ctx context.Context, in *voltha.Device, opts ...grpc.CallOption) (*empty.Empty, error) {
@@ -485,7 +508,7 @@
 type AdapterServiceServer interface {
 	// GetHealthStatus is used by an AdapterService client to verify connectivity
 	// to the gRPC server hosting the AdapterService service
-	GetHealthStatus(context.Context, *common.Connection) (*health.HealthStatus, error)
+	GetHealthStatus(AdapterService_GetHealthStatusServer) error
 	// Device
 	AdoptDevice(context.Context, *voltha.Device) (*empty.Empty, error)
 	ReconcileDevice(context.Context, *voltha.Device) (*empty.Empty, error)
@@ -536,8 +559,8 @@
 type UnimplementedAdapterServiceServer struct {
 }
 
-func (*UnimplementedAdapterServiceServer) GetHealthStatus(ctx context.Context, req *common.Connection) (*health.HealthStatus, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
+func (*UnimplementedAdapterServiceServer) GetHealthStatus(srv AdapterService_GetHealthStatusServer) error {
+	return status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
 }
 func (*UnimplementedAdapterServiceServer) AdoptDevice(ctx context.Context, req *voltha.Device) (*empty.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method AdoptDevice not implemented")
@@ -646,22 +669,30 @@
 	s.RegisterService(&_AdapterService_serviceDesc, srv)
 }
 
-func _AdapterService_GetHealthStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(common.Connection)
-	if err := dec(in); err != nil {
+func _AdapterService_GetHealthStatus_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(AdapterServiceServer).GetHealthStatus(&adapterServiceGetHealthStatusServer{stream})
+}
+
+type AdapterService_GetHealthStatusServer interface {
+	Send(*health.HealthStatus) error
+	Recv() (*common.Connection, error)
+	grpc.ServerStream
+}
+
+type adapterServiceGetHealthStatusServer struct {
+	grpc.ServerStream
+}
+
+func (x *adapterServiceGetHealthStatusServer) Send(m *health.HealthStatus) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *adapterServiceGetHealthStatusServer) Recv() (*common.Connection, error) {
+	m := new(common.Connection)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
-	if interceptor == nil {
-		return srv.(AdapterServiceServer).GetHealthStatus(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/adapter_service.AdapterService/GetHealthStatus",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(AdapterServiceServer).GetHealthStatus(ctx, req.(*common.Connection))
-	}
-	return interceptor(ctx, in, info, handler)
+	return m, nil
 }
 
 func _AdapterService_AdoptDevice_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
@@ -1281,10 +1312,6 @@
 	HandlerType: (*AdapterServiceServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
-			MethodName: "GetHealthStatus",
-			Handler:    _AdapterService_GetHealthStatus_Handler,
-		},
-		{
 			MethodName: "AdoptDevice",
 			Handler:    _AdapterService_AdoptDevice_Handler,
 		},
@@ -1421,6 +1448,13 @@
 			Handler:    _AdapterService_SetSingleValue_Handler,
 		},
 	},
-	Streams:  []grpc.StreamDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "GetHealthStatus",
+			Handler:       _AdapterService_GetHealthStatus_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
 	Metadata: "voltha_protos/adapter_service.proto",
 }
diff --git a/go/core_service/core_services.pb.go b/go/core_service/core_services.pb.go
index 5816ad2..265d0c8 100644
--- a/go/core_service/core_services.pb.go
+++ b/go/core_service/core_services.pb.go
@@ -32,46 +32,47 @@
 func init() { proto.RegisterFile("voltha_protos/core_services.proto", fileDescriptor_979c43850713f141) }
 
 var fileDescriptor_979c43850713f141 = []byte{
-	// 619 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x55, 0xdf, 0x4f, 0x14, 0x31,
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-	0xd2, 0x85, 0xc9, 0xbd, 0xfb, 0xb3, 0x04, 0x4b, 0x43, 0x21, 0xf1, 0xd2, 0xb4, 0x48, 0x8e, 0xa0,
-	0x3f, 0x42, 0x7d, 0xd2, 0x94, 0x5c, 0x6a, 0xa6, 0xef, 0x14, 0x21, 0xd4, 0x2a, 0x0d, 0x05, 0xe7,
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-	0x8d, 0x2d, 0xb4, 0xb5, 0x85, 0x7e, 0xae, 0x6d, 0x21, 0x87, 0xd0, 0x4b, 0x9a, 0x31, 0xbe, 0x4d,
-	0x33, 0xa6, 0x91, 0xac, 0x50, 0x3b, 0x95, 0x89, 0x06, 0x71, 0xfb, 0xb0, 0x74, 0x2e, 0xa4, 0x1e,
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-	0x00, 0xff, 0xff, 0xe7, 0xe2, 0x9c, 0x32, 0x35, 0x07, 0x00, 0x00,
+	// 625 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x55, 0xcd, 0x4f, 0x14, 0x31,
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+	0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -86,8 +87,9 @@
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type CoreServiceClient interface {
-	//	 in coreProxy interface
-	GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a CoreService client to verify connectivity
+	// to the gRPC server hosting the CoreService service
+	GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (CoreService_GetHealthStatusClient, error)
 	RegisterAdapter(ctx context.Context, in *core_adapter.AdapterRegistration, opts ...grpc.CallOption) (*empty.Empty, error)
 	DeviceUpdate(ctx context.Context, in *voltha.Device, opts ...grpc.CallOption) (*empty.Empty, error)
 	PortCreated(ctx context.Context, in *voltha.Port, opts ...grpc.CallOption) (*empty.Empty, error)
@@ -122,13 +124,35 @@
 	return &coreServiceClient{cc}
 }
 
-func (c *coreServiceClient) GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error) {
-	out := new(health.HealthStatus)
-	err := c.cc.Invoke(ctx, "/core_service.CoreService/GetHealthStatus", in, out, opts...)
+func (c *coreServiceClient) GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (CoreService_GetHealthStatusClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_CoreService_serviceDesc.Streams[0], "/core_service.CoreService/GetHealthStatus", opts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &coreServiceGetHealthStatusClient{stream}
+	return x, nil
+}
+
+type CoreService_GetHealthStatusClient interface {
+	Send(*common.Connection) error
+	Recv() (*health.HealthStatus, error)
+	grpc.ClientStream
+}
+
+type coreServiceGetHealthStatusClient struct {
+	grpc.ClientStream
+}
+
+func (x *coreServiceGetHealthStatusClient) Send(m *common.Connection) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *coreServiceGetHealthStatusClient) Recv() (*health.HealthStatus, error) {
+	m := new(health.HealthStatus)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
 }
 
 func (c *coreServiceClient) RegisterAdapter(ctx context.Context, in *core_adapter.AdapterRegistration, opts ...grpc.CallOption) (*empty.Empty, error) {
@@ -340,8 +364,9 @@
 
 // CoreServiceServer is the server API for CoreService service.
 type CoreServiceServer interface {
-	//	 in coreProxy interface
-	GetHealthStatus(context.Context, *common.Connection) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a CoreService client to verify connectivity
+	// to the gRPC server hosting the CoreService service
+	GetHealthStatus(CoreService_GetHealthStatusServer) error
 	RegisterAdapter(context.Context, *core_adapter.AdapterRegistration) (*empty.Empty, error)
 	DeviceUpdate(context.Context, *voltha.Device) (*empty.Empty, error)
 	PortCreated(context.Context, *voltha.Port) (*empty.Empty, error)
@@ -372,8 +397,8 @@
 type UnimplementedCoreServiceServer struct {
 }
 
-func (*UnimplementedCoreServiceServer) GetHealthStatus(ctx context.Context, req *common.Connection) (*health.HealthStatus, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
+func (*UnimplementedCoreServiceServer) GetHealthStatus(srv CoreService_GetHealthStatusServer) error {
+	return status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
 }
 func (*UnimplementedCoreServiceServer) RegisterAdapter(ctx context.Context, req *core_adapter.AdapterRegistration) (*empty.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method RegisterAdapter not implemented")
@@ -449,22 +474,30 @@
 	s.RegisterService(&_CoreService_serviceDesc, srv)
 }
 
-func _CoreService_GetHealthStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(common.Connection)
-	if err := dec(in); err != nil {
+func _CoreService_GetHealthStatus_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(CoreServiceServer).GetHealthStatus(&coreServiceGetHealthStatusServer{stream})
+}
+
+type CoreService_GetHealthStatusServer interface {
+	Send(*health.HealthStatus) error
+	Recv() (*common.Connection, error)
+	grpc.ServerStream
+}
+
+type coreServiceGetHealthStatusServer struct {
+	grpc.ServerStream
+}
+
+func (x *coreServiceGetHealthStatusServer) Send(m *health.HealthStatus) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *coreServiceGetHealthStatusServer) Recv() (*common.Connection, error) {
+	m := new(common.Connection)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
-	if interceptor == nil {
-		return srv.(CoreServiceServer).GetHealthStatus(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/core_service.CoreService/GetHealthStatus",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(CoreServiceServer).GetHealthStatus(ctx, req.(*common.Connection))
-	}
-	return interceptor(ctx, in, info, handler)
+	return m, nil
 }
 
 func _CoreService_RegisterAdapter_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
@@ -886,10 +919,6 @@
 	HandlerType: (*CoreServiceServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
-			MethodName: "GetHealthStatus",
-			Handler:    _CoreService_GetHealthStatus_Handler,
-		},
-		{
 			MethodName: "RegisterAdapter",
 			Handler:    _CoreService_RegisterAdapter_Handler,
 		},
@@ -982,6 +1011,13 @@
 			Handler:    _CoreService_UpdateImageDownload_Handler,
 		},
 	},
-	Streams:  []grpc.StreamDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "GetHealthStatus",
+			Handler:       _CoreService_GetHealthStatus_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
 	Metadata: "voltha_protos/core_services.proto",
 }
diff --git a/go/olt_inter_adapter_service/olt_inter_adapter_service.pb.go b/go/olt_inter_adapter_service/olt_inter_adapter_service.pb.go
index 93dade6..1e5c21c 100644
--- a/go/olt_inter_adapter_service/olt_inter_adapter_service.pb.go
+++ b/go/olt_inter_adapter_service/olt_inter_adapter_service.pb.go
@@ -33,28 +33,29 @@
 }
 
 var fileDescriptor_3ddb40a5aae0f6e1 = []byte{
-	// 330 bytes of a gzipped FileDescriptorProto
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-	0xff, 0xff, 0xac, 0x65, 0xa9, 0x8b, 0xbe, 0x02, 0x00, 0x00,
+	// 337 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x92, 0xcf, 0x4e, 0xe3, 0x30,
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+	0x39, 0x8c, 0x4e, 0x5f, 0x6a, 0xe2, 0xf8, 0x66, 0x5e, 0x87, 0x49, 0x46, 0x69, 0xb9, 0xaa, 0x96,
+	0x11, 0xef, 0x9d, 0xb1, 0x77, 0xf6, 0xc3, 0x92, 0xb7, 0xd7, 0x71, 0x82, 0xed, 0x07, 0xb9, 0xfa,
+	0x5d, 0x73, 0x57, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xd0, 0x9f, 0xd5, 0x8e, 0xc2, 0x02, 0x00,
+	0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -69,9 +70,9 @@
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type OltInterAdapterServiceClient interface {
-	// GetHealthStatus is used by an OltInterAdapterService client to verify connectivity
-	// to the gRPC server hosting the OltInterAdapterService service
-	GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a OltInterAdapterService client to detect a connection
+	// lost with the gRPC server hosting the OltInterAdapterService service
+	GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (OltInterAdapterService_GetHealthStatusClient, error)
 	ProxyOmciRequest(ctx context.Context, in *inter_adapter.OmciMessage, opts ...grpc.CallOption) (*empty.Empty, error)
 	ProxyOmciRequests(ctx context.Context, in *inter_adapter.OmciMessages, opts ...grpc.CallOption) (*empty.Empty, error)
 	GetTechProfileInstance(ctx context.Context, in *inter_adapter.TechProfileInstanceRequestMessage, opts ...grpc.CallOption) (*inter_adapter.TechProfileDownloadMessage, error)
@@ -85,13 +86,35 @@
 	return &oltInterAdapterServiceClient{cc}
 }
 
-func (c *oltInterAdapterServiceClient) GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error) {
-	out := new(health.HealthStatus)
-	err := c.cc.Invoke(ctx, "/olt_inter_adapter_service.OltInterAdapterService/GetHealthStatus", in, out, opts...)
+func (c *oltInterAdapterServiceClient) GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (OltInterAdapterService_GetHealthStatusClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_OltInterAdapterService_serviceDesc.Streams[0], "/olt_inter_adapter_service.OltInterAdapterService/GetHealthStatus", opts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &oltInterAdapterServiceGetHealthStatusClient{stream}
+	return x, nil
+}
+
+type OltInterAdapterService_GetHealthStatusClient interface {
+	Send(*common.Connection) error
+	Recv() (*health.HealthStatus, error)
+	grpc.ClientStream
+}
+
+type oltInterAdapterServiceGetHealthStatusClient struct {
+	grpc.ClientStream
+}
+
+func (x *oltInterAdapterServiceGetHealthStatusClient) Send(m *common.Connection) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *oltInterAdapterServiceGetHealthStatusClient) Recv() (*health.HealthStatus, error) {
+	m := new(health.HealthStatus)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
 }
 
 func (c *oltInterAdapterServiceClient) ProxyOmciRequest(ctx context.Context, in *inter_adapter.OmciMessage, opts ...grpc.CallOption) (*empty.Empty, error) {
@@ -123,9 +146,9 @@
 
 // OltInterAdapterServiceServer is the server API for OltInterAdapterService service.
 type OltInterAdapterServiceServer interface {
-	// GetHealthStatus is used by an OltInterAdapterService client to verify connectivity
-	// to the gRPC server hosting the OltInterAdapterService service
-	GetHealthStatus(context.Context, *common.Connection) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a OltInterAdapterService client to detect a connection
+	// lost with the gRPC server hosting the OltInterAdapterService service
+	GetHealthStatus(OltInterAdapterService_GetHealthStatusServer) error
 	ProxyOmciRequest(context.Context, *inter_adapter.OmciMessage) (*empty.Empty, error)
 	ProxyOmciRequests(context.Context, *inter_adapter.OmciMessages) (*empty.Empty, error)
 	GetTechProfileInstance(context.Context, *inter_adapter.TechProfileInstanceRequestMessage) (*inter_adapter.TechProfileDownloadMessage, error)
@@ -135,8 +158,8 @@
 type UnimplementedOltInterAdapterServiceServer struct {
 }
 
-func (*UnimplementedOltInterAdapterServiceServer) GetHealthStatus(ctx context.Context, req *common.Connection) (*health.HealthStatus, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
+func (*UnimplementedOltInterAdapterServiceServer) GetHealthStatus(srv OltInterAdapterService_GetHealthStatusServer) error {
+	return status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
 }
 func (*UnimplementedOltInterAdapterServiceServer) ProxyOmciRequest(ctx context.Context, req *inter_adapter.OmciMessage) (*empty.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ProxyOmciRequest not implemented")
@@ -152,22 +175,30 @@
 	s.RegisterService(&_OltInterAdapterService_serviceDesc, srv)
 }
 
-func _OltInterAdapterService_GetHealthStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(common.Connection)
-	if err := dec(in); err != nil {
+func _OltInterAdapterService_GetHealthStatus_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(OltInterAdapterServiceServer).GetHealthStatus(&oltInterAdapterServiceGetHealthStatusServer{stream})
+}
+
+type OltInterAdapterService_GetHealthStatusServer interface {
+	Send(*health.HealthStatus) error
+	Recv() (*common.Connection, error)
+	grpc.ServerStream
+}
+
+type oltInterAdapterServiceGetHealthStatusServer struct {
+	grpc.ServerStream
+}
+
+func (x *oltInterAdapterServiceGetHealthStatusServer) Send(m *health.HealthStatus) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *oltInterAdapterServiceGetHealthStatusServer) Recv() (*common.Connection, error) {
+	m := new(common.Connection)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
-	if interceptor == nil {
-		return srv.(OltInterAdapterServiceServer).GetHealthStatus(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/olt_inter_adapter_service.OltInterAdapterService/GetHealthStatus",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(OltInterAdapterServiceServer).GetHealthStatus(ctx, req.(*common.Connection))
-	}
-	return interceptor(ctx, in, info, handler)
+	return m, nil
 }
 
 func _OltInterAdapterService_ProxyOmciRequest_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
@@ -229,10 +260,6 @@
 	HandlerType: (*OltInterAdapterServiceServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
-			MethodName: "GetHealthStatus",
-			Handler:    _OltInterAdapterService_GetHealthStatus_Handler,
-		},
-		{
 			MethodName: "ProxyOmciRequest",
 			Handler:    _OltInterAdapterService_ProxyOmciRequest_Handler,
 		},
@@ -245,6 +272,13 @@
 			Handler:    _OltInterAdapterService_GetTechProfileInstance_Handler,
 		},
 	},
-	Streams:  []grpc.StreamDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "GetHealthStatus",
+			Handler:       _OltInterAdapterService_GetHealthStatus_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
 	Metadata: "voltha_protos/olt_inter_adapter_service.proto",
 }
diff --git a/go/onu_inter_adapter_service/onu_inter_adapter_service.pb.go b/go/onu_inter_adapter_service/onu_inter_adapter_service.pb.go
index a2cf537..9094c10 100644
--- a/go/onu_inter_adapter_service/onu_inter_adapter_service.pb.go
+++ b/go/onu_inter_adapter_service/onu_inter_adapter_service.pb.go
@@ -33,29 +33,30 @@
 }
 
 var fileDescriptor_f951f30caeee9ccd = []byte{
-	// 351 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x93, 0x4f, 0x4b, 0xf3, 0x40,
-	0x10, 0xc6, 0x79, 0x79, 0xc1, 0xc3, 0x4a, 0x15, 0x56, 0x29, 0x18, 0xbd, 0x14, 0x4f, 0x1e, 0xba,
-	0x01, 0xc5, 0x93, 0xa7, 0xfe, 0x91, 0x56, 0xa8, 0xb4, 0xd0, 0x22, 0xe2, 0xa5, 0x6c, 0x37, 0xd3,
-	0x64, 0x21, 0xd9, 0x09, 0xc9, 0xa4, 0xe2, 0xb7, 0xf0, 0xfb, 0xf9, 0x65, 0x24, 0xd9, 0x14, 0xba,
-	0xb5, 0x25, 0xa7, 0x10, 0x9e, 0xdf, 0xfc, 0x98, 0x81, 0x67, 0x59, 0x77, 0x83, 0x31, 0x45, 0x72,
-	0x99, 0x66, 0x48, 0x98, 0xfb, 0x68, 0x8a, 0xa5, 0x36, 0x04, 0xd9, 0x52, 0x06, 0x32, 0x2d, 0xbf,
-	0x39, 0x64, 0x1b, 0xad, 0x40, 0x54, 0x00, 0xbf, 0x3a, 0x0a, 0x78, 0x9e, 0x6b, 0x52, 0x98, 0x24,
-	0x68, 0xec, 0x98, 0x77, 0x1d, 0x22, 0x86, 0x31, 0xf8, 0xd5, 0xdf, 0xaa, 0x58, 0xfb, 0x90, 0xa4,
-	0xf4, 0x55, 0x87, 0x1d, 0x77, 0xd0, 0xb1, 0xd7, 0xc8, 0x9e, 0x3b, 0x02, 0x19, 0x53, 0x64, 0xb3,
-	0xfb, 0x9f, 0xff, 0xac, 0x3d, 0x35, 0xc5, 0x4b, 0x39, 0xd6, 0xb3, 0x53, 0x73, 0xbb, 0x12, 0x7f,
-	0x62, 0xe7, 0x23, 0xa0, 0x71, 0x45, 0xcf, 0x49, 0x52, 0x91, 0x73, 0x2e, 0xea, 0xc5, 0x06, 0x68,
-	0x0c, 0x28, 0xd2, 0x68, 0xbc, 0x4b, 0x51, 0x0b, 0x1d, 0x72, 0xc2, 0x5a, 0x95, 0x36, 0xd0, 0x4a,
-	0x96, 0x18, 0xbf, 0x15, 0xee, 0x6a, 0x4e, 0xfa, 0x0a, 0x79, 0x2e, 0x43, 0xf0, 0xda, 0xc2, 0x9e,
-	0x2a, 0xb6, 0xa7, 0x8a, 0xe7, 0xf2, 0x54, 0x3e, 0x64, 0x67, 0xd3, 0x44, 0xe9, 0x1d, 0x9d, 0xb7,
-	0xaf, 0x4b, 0x94, 0x6e, 0xb2, 0xbc, 0xb3, 0x8b, 0x21, 0x7e, 0x9a, 0x18, 0x65, 0xb0, 0x00, 0x15,
-	0xcd, 0x32, 0x5c, 0xeb, 0x18, 0xf8, 0xdd, 0x9e, 0x6a, 0x27, 0xdb, 0xe2, 0x4d, 0xe6, 0x09, 0x6b,
-	0x0d, 0x21, 0x06, 0x82, 0x11, 0x24, 0x33, 0xcc, 0xe8, 0xcf, 0xb5, 0x4e, 0xda, 0x64, 0x1b, 0xb3,
-	0x53, 0xcb, 0x2f, 0x06, 0x68, 0x88, 0x77, 0x0e, 0xba, 0x16, 0x0a, 0x4d, 0x93, 0xa9, 0xff, 0xfd,
-	0x8f, 0x75, 0x31, 0x0b, 0x05, 0xa6, 0x60, 0x14, 0x66, 0x81, 0xb0, 0x4d, 0x10, 0x47, 0x7b, 0xd8,
-	0xbf, 0x79, 0xab, 0x88, 0xc3, 0x95, 0xf8, 0xe8, 0x85, 0x9a, 0xa2, 0x62, 0x55, 0xb6, 0xc0, 0xdf,
-	0x3a, 0x7d, 0xeb, 0xec, 0xd6, 0xed, 0xda, 0x3c, 0xfa, 0x21, 0x1e, 0x7f, 0x09, 0xab, 0x93, 0x8a,
-	0x7b, 0xf8, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x5f, 0x10, 0x75, 0x34, 0x3b, 0x03, 0x00, 0x00,
+	// 354 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x84, 0x93, 0xcf, 0x4a, 0xc3, 0x40,
+	0x10, 0xc6, 0x29, 0x82, 0x87, 0x95, 0x2a, 0xac, 0x52, 0x30, 0x7a, 0x29, 0x5e, 0xf4, 0xd0, 0x8d,
+	0x28, 0x9e, 0xa5, 0x7f, 0xa4, 0x15, 0x2a, 0x2d, 0xb4, 0x88, 0x78, 0x29, 0xdb, 0xcd, 0x34, 0x59,
+	0x48, 0x76, 0x42, 0x32, 0xa9, 0xf8, 0x16, 0xbe, 0xa1, 0xaf, 0x22, 0xc9, 0xa6, 0xd0, 0xd4, 0x96,
+	0x9c, 0x42, 0xf8, 0x7e, 0xf3, 0x63, 0x06, 0xbe, 0x65, 0x9d, 0x35, 0x86, 0x14, 0xc8, 0x45, 0x9c,
+	0x20, 0x61, 0xea, 0xa2, 0xc9, 0x16, 0xda, 0x10, 0x24, 0x0b, 0xe9, 0xc9, 0x38, 0xff, 0xa6, 0x90,
+	0xac, 0xb5, 0x02, 0x51, 0x00, 0xfc, 0xf2, 0x20, 0xe0, 0x38, 0x55, 0x93, 0xc2, 0x28, 0x42, 0x63,
+	0xc7, 0x9c, 0x2b, 0x1f, 0xd1, 0x0f, 0xc1, 0x2d, 0xfe, 0x96, 0xd9, 0xca, 0x85, 0x28, 0xa6, 0xef,
+	0x32, 0x6c, 0x57, 0x07, 0x2b, 0xf6, 0x12, 0xd9, 0x71, 0x07, 0x20, 0x43, 0x0a, 0x6c, 0xf6, 0xf0,
+	0x7b, 0xc4, 0x5a, 0x13, 0x93, 0xbd, 0xe6, 0x63, 0x5d, 0x3b, 0x35, 0xb3, 0x2b, 0xf1, 0x67, 0x76,
+	0x36, 0x04, 0x1a, 0x15, 0xf4, 0x8c, 0x24, 0x65, 0x29, 0xe7, 0xa2, 0x5c, 0xac, 0x8f, 0xc6, 0x80,
+	0x22, 0x8d, 0xc6, 0xb9, 0x10, 0xa5, 0x70, 0x9b, 0xbc, 0x6d, 0xdc, 0x37, 0xf8, 0x98, 0x35, 0x0b,
+	0xb5, 0xa7, 0x95, 0xcc, 0x51, 0x7e, 0x23, 0xaa, 0xeb, 0x55, 0xd2, 0x37, 0x48, 0x53, 0xe9, 0x83,
+	0xd3, 0x12, 0xf6, 0x5c, 0xb1, 0x39, 0x57, 0xbc, 0xe4, 0xe7, 0xf2, 0x01, 0x3b, 0x9d, 0x44, 0x4a,
+	0x6f, 0xe9, 0x9c, 0x5d, 0x5d, 0xa4, 0x74, 0x9d, 0xe5, 0x83, 0x9d, 0x0f, 0xf0, 0xcb, 0x84, 0x28,
+	0xbd, 0x39, 0xa8, 0x60, 0x9a, 0xe0, 0x4a, 0x87, 0xc0, 0xef, 0x76, 0x54, 0x5b, 0xd9, 0x06, 0xaf,
+	0x33, 0x8f, 0x59, 0x73, 0x00, 0x21, 0x10, 0x0c, 0x21, 0x9a, 0x62, 0x42, 0xff, 0xae, 0xad, 0xa4,
+	0x75, 0xb6, 0x11, 0x3b, 0xb1, 0xfc, 0xbc, 0x8f, 0x86, 0x78, 0x7b, 0xaf, 0x6b, 0xae, 0xd0, 0xd4,
+	0x99, 0x7a, 0x3f, 0x0d, 0xd6, 0xc1, 0xc4, 0x17, 0x18, 0x83, 0x51, 0x98, 0x78, 0xc2, 0xb6, 0x41,
+	0x1c, 0xec, 0x62, 0xef, 0xfa, 0xbd, 0x20, 0xf6, 0xd7, 0xe2, 0xb3, 0xeb, 0x6b, 0x0a, 0xb2, 0x65,
+	0xde, 0x04, 0x77, 0xe3, 0x74, 0xad, 0xb3, 0x53, 0x36, 0x6c, 0xfd, 0xe4, 0xfa, 0x78, 0xf8, 0x35,
+	0x2c, 0x8f, 0x0b, 0xee, 0xf1, 0x2f, 0x00, 0x00, 0xff, 0xff, 0xc4, 0x5f, 0x8c, 0x88, 0x3f, 0x03,
+	0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -70,9 +71,9 @@
 //
 // For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
 type OnuInterAdapterServiceClient interface {
-	// GetHealthStatus is used by an OnuInterAdapterService client to verify connectivity
-	// to the gRPC server hosting the OnuInterAdapterService service
-	GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a OnuInterAdapterService client to detect a connection
+	// lost with the gRPC server hosting the OnuInterAdapterService service
+	GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (OnuInterAdapterService_GetHealthStatusClient, error)
 	OnuIndication(ctx context.Context, in *inter_adapter.OnuIndicationMessage, opts ...grpc.CallOption) (*empty.Empty, error)
 	OmciIndication(ctx context.Context, in *inter_adapter.OmciMessage, opts ...grpc.CallOption) (*empty.Empty, error)
 	DownloadTechProfile(ctx context.Context, in *inter_adapter.TechProfileDownloadMessage, opts ...grpc.CallOption) (*empty.Empty, error)
@@ -88,13 +89,35 @@
 	return &onuInterAdapterServiceClient{cc}
 }
 
-func (c *onuInterAdapterServiceClient) GetHealthStatus(ctx context.Context, in *common.Connection, opts ...grpc.CallOption) (*health.HealthStatus, error) {
-	out := new(health.HealthStatus)
-	err := c.cc.Invoke(ctx, "/onu_inter_adapter_service.OnuInterAdapterService/GetHealthStatus", in, out, opts...)
+func (c *onuInterAdapterServiceClient) GetHealthStatus(ctx context.Context, opts ...grpc.CallOption) (OnuInterAdapterService_GetHealthStatusClient, error) {
+	stream, err := c.cc.NewStream(ctx, &_OnuInterAdapterService_serviceDesc.Streams[0], "/onu_inter_adapter_service.OnuInterAdapterService/GetHealthStatus", opts...)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	x := &onuInterAdapterServiceGetHealthStatusClient{stream}
+	return x, nil
+}
+
+type OnuInterAdapterService_GetHealthStatusClient interface {
+	Send(*common.Connection) error
+	Recv() (*health.HealthStatus, error)
+	grpc.ClientStream
+}
+
+type onuInterAdapterServiceGetHealthStatusClient struct {
+	grpc.ClientStream
+}
+
+func (x *onuInterAdapterServiceGetHealthStatusClient) Send(m *common.Connection) error {
+	return x.ClientStream.SendMsg(m)
+}
+
+func (x *onuInterAdapterServiceGetHealthStatusClient) Recv() (*health.HealthStatus, error) {
+	m := new(health.HealthStatus)
+	if err := x.ClientStream.RecvMsg(m); err != nil {
+		return nil, err
+	}
+	return m, nil
 }
 
 func (c *onuInterAdapterServiceClient) OnuIndication(ctx context.Context, in *inter_adapter.OnuIndicationMessage, opts ...grpc.CallOption) (*empty.Empty, error) {
@@ -144,9 +167,9 @@
 
 // OnuInterAdapterServiceServer is the server API for OnuInterAdapterService service.
 type OnuInterAdapterServiceServer interface {
-	// GetHealthStatus is used by an OnuInterAdapterService client to verify connectivity
-	// to the gRPC server hosting the OnuInterAdapterService service
-	GetHealthStatus(context.Context, *common.Connection) (*health.HealthStatus, error)
+	// GetHealthStatus is used by a OnuInterAdapterService client to detect a connection
+	// lost with the gRPC server hosting the OnuInterAdapterService service
+	GetHealthStatus(OnuInterAdapterService_GetHealthStatusServer) error
 	OnuIndication(context.Context, *inter_adapter.OnuIndicationMessage) (*empty.Empty, error)
 	OmciIndication(context.Context, *inter_adapter.OmciMessage) (*empty.Empty, error)
 	DownloadTechProfile(context.Context, *inter_adapter.TechProfileDownloadMessage) (*empty.Empty, error)
@@ -158,8 +181,8 @@
 type UnimplementedOnuInterAdapterServiceServer struct {
 }
 
-func (*UnimplementedOnuInterAdapterServiceServer) GetHealthStatus(ctx context.Context, req *common.Connection) (*health.HealthStatus, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
+func (*UnimplementedOnuInterAdapterServiceServer) GetHealthStatus(srv OnuInterAdapterService_GetHealthStatusServer) error {
+	return status.Errorf(codes.Unimplemented, "method GetHealthStatus not implemented")
 }
 func (*UnimplementedOnuInterAdapterServiceServer) OnuIndication(ctx context.Context, req *inter_adapter.OnuIndicationMessage) (*empty.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method OnuIndication not implemented")
@@ -181,22 +204,30 @@
 	s.RegisterService(&_OnuInterAdapterService_serviceDesc, srv)
 }
 
-func _OnuInterAdapterService_GetHealthStatus_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(common.Connection)
-	if err := dec(in); err != nil {
+func _OnuInterAdapterService_GetHealthStatus_Handler(srv interface{}, stream grpc.ServerStream) error {
+	return srv.(OnuInterAdapterServiceServer).GetHealthStatus(&onuInterAdapterServiceGetHealthStatusServer{stream})
+}
+
+type OnuInterAdapterService_GetHealthStatusServer interface {
+	Send(*health.HealthStatus) error
+	Recv() (*common.Connection, error)
+	grpc.ServerStream
+}
+
+type onuInterAdapterServiceGetHealthStatusServer struct {
+	grpc.ServerStream
+}
+
+func (x *onuInterAdapterServiceGetHealthStatusServer) Send(m *health.HealthStatus) error {
+	return x.ServerStream.SendMsg(m)
+}
+
+func (x *onuInterAdapterServiceGetHealthStatusServer) Recv() (*common.Connection, error) {
+	m := new(common.Connection)
+	if err := x.ServerStream.RecvMsg(m); err != nil {
 		return nil, err
 	}
-	if interceptor == nil {
-		return srv.(OnuInterAdapterServiceServer).GetHealthStatus(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/onu_inter_adapter_service.OnuInterAdapterService/GetHealthStatus",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(OnuInterAdapterServiceServer).GetHealthStatus(ctx, req.(*common.Connection))
-	}
-	return interceptor(ctx, in, info, handler)
+	return m, nil
 }
 
 func _OnuInterAdapterService_OnuIndication_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
@@ -294,10 +325,6 @@
 	HandlerType: (*OnuInterAdapterServiceServer)(nil),
 	Methods: []grpc.MethodDesc{
 		{
-			MethodName: "GetHealthStatus",
-			Handler:    _OnuInterAdapterService_GetHealthStatus_Handler,
-		},
-		{
 			MethodName: "OnuIndication",
 			Handler:    _OnuInterAdapterService_OnuIndication_Handler,
 		},
@@ -318,6 +345,13 @@
 			Handler:    _OnuInterAdapterService_DeleteTCont_Handler,
 		},
 	},
-	Streams:  []grpc.StreamDesc{},
+	Streams: []grpc.StreamDesc{
+		{
+			StreamName:    "GetHealthStatus",
+			Handler:       _OnuInterAdapterService_GetHealthStatus_Handler,
+			ServerStreams: true,
+			ClientStreams: true,
+		},
+	},
 	Metadata: "voltha_protos/onu_inter_adapter_service.proto",
 }
diff --git a/protos/voltha_protos/adapter_service.proto b/protos/voltha_protos/adapter_service.proto
index cfd5f29..08578a4 100755
--- a/protos/voltha_protos/adapter_service.proto
+++ b/protos/voltha_protos/adapter_service.proto
@@ -20,7 +20,7 @@
 service AdapterService {
     // GetHealthStatus is used by an AdapterService client to verify connectivity
     // to the gRPC server hosting the AdapterService service
-    rpc GetHealthStatus(common.Connection) returns (health.HealthStatus);
+    rpc GetHealthStatus(stream common.Connection) returns (stream health.HealthStatus);
 
     // Device
     rpc AdoptDevice(device.Device) returns(google.protobuf.Empty);
diff --git a/protos/voltha_protos/core_services.proto b/protos/voltha_protos/core_services.proto
index f0929f4..738bd3e 100755
--- a/protos/voltha_protos/core_services.proto
+++ b/protos/voltha_protos/core_services.proto
@@ -15,8 +15,10 @@
 // The CoreService is a gRPC service implemented by the Voltha RW-Core for the
 // sole purpose of serving requests/updates from the Voltha adapters. 
 service CoreService {
-	//	 in coreProxy interface
-	rpc GetHealthStatus(common.Connection) returns (health.HealthStatus);
+	// GetHealthStatus is used by a CoreService client to verify connectivity
+    // to the gRPC server hosting the CoreService service
+    rpc GetHealthStatus(stream common.Connection) returns (stream health.HealthStatus);
+
 	rpc RegisterAdapter (core_adapter.AdapterRegistration) returns (google.protobuf.Empty);
 	rpc DeviceUpdate (device.Device) returns (google.protobuf.Empty);
 	rpc PortCreated (device.Port) returns (google.protobuf.Empty);
diff --git a/protos/voltha_protos/olt_inter_adapter_service.proto b/protos/voltha_protos/olt_inter_adapter_service.proto
index 68dbb6f..6ebad57 100755
--- a/protos/voltha_protos/olt_inter_adapter_service.proto
+++ b/protos/voltha_protos/olt_inter_adapter_service.proto
@@ -12,9 +12,10 @@
 import "voltha_protos/health.proto";
 
 service OltInterAdapterService {
-    // GetHealthStatus is used by an OltInterAdapterService client to verify connectivity
-    // to the gRPC server hosting the OltInterAdapterService service
-    rpc GetHealthStatus(common.Connection) returns (health.HealthStatus);
+    // GetHealthStatus is used by a OltInterAdapterService client to detect a connection
+    // lost with the gRPC server hosting the OltInterAdapterService service
+    rpc GetHealthStatus(stream common.Connection) returns (stream health.HealthStatus);
+
 
     rpc ProxyOmciRequest(inter_adapter.OmciMessage) returns (google.protobuf.Empty);
     rpc ProxyOmciRequests(inter_adapter.OmciMessages) returns (google.protobuf.Empty);
diff --git a/protos/voltha_protos/onu_inter_adapter_service.proto b/protos/voltha_protos/onu_inter_adapter_service.proto
index 1b9243a..3b3d25d 100755
--- a/protos/voltha_protos/onu_inter_adapter_service.proto
+++ b/protos/voltha_protos/onu_inter_adapter_service.proto
@@ -12,9 +12,9 @@
 import "voltha_protos/health.proto";
 
 service OnuInterAdapterService {
-    // GetHealthStatus is used by an OnuInterAdapterService client to verify connectivity
-    // to the gRPC server hosting the OnuInterAdapterService service
-    rpc GetHealthStatus(common.Connection) returns (health.HealthStatus);
+    // GetHealthStatus is used by a OnuInterAdapterService client to detect a connection
+    // lost with the gRPC server hosting the OnuInterAdapterService service
+    rpc GetHealthStatus(stream common.Connection) returns (stream health.HealthStatus);
 
     rpc OnuIndication(inter_adapter.OnuIndicationMessage) returns (google.protobuf.Empty);
     rpc OmciIndication(inter_adapter.OmciMessage) returns (google.protobuf.Empty);
diff --git a/vendor/google.golang.org/genproto/googleapis/api/annotations/resource.pb.go b/vendor/google.golang.org/genproto/googleapis/api/annotations/resource.pb.go
index 3571ad6..6515668 100644
--- a/vendor/google.golang.org/genproto/googleapis/api/annotations/resource.pb.go
+++ b/vendor/google.golang.org/genproto/googleapis/api/annotations/resource.pb.go
@@ -163,11 +163,7 @@
 //       // For Kubernetes resources, the format is {api group}/{kind}.
 //       option (google.api.resource) = {
 //         type: "pubsub.googleapis.com/Topic"
-//         name_descriptor: {
-//           pattern: "projects/{project}/topics/{topic}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         }
+//         pattern: "projects/{project}/topics/{topic}"
 //       };
 //     }
 //
@@ -175,10 +171,7 @@
 //
 //     resources:
 //     - type: "pubsub.googleapis.com/Topic"
-//       name_descriptor:
-//         - pattern: "projects/{project}/topics/{topic}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
+//       pattern: "projects/{project}/topics/{topic}"
 //
 // Sometimes, resources have multiple patterns, typically because they can
 // live under multiple parents.
@@ -188,26 +181,10 @@
 //     message LogEntry {
 //       option (google.api.resource) = {
 //         type: "logging.googleapis.com/LogEntry"
-//         name_descriptor: {
-//           pattern: "projects/{project}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         }
-//         name_descriptor: {
-//           pattern: "folders/{folder}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//           parent_name_extractor: "folders/{folder}"
-//         }
-//         name_descriptor: {
-//           pattern: "organizations/{organization}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Organization"
-//           parent_name_extractor: "organizations/{organization}"
-//         }
-//         name_descriptor: {
-//           pattern: "billingAccounts/{billing_account}/logs/{log}"
-//           parent_type: "billing.googleapis.com/BillingAccount"
-//           parent_name_extractor: "billingAccounts/{billing_account}"
-//         }
+//         pattern: "projects/{project}/logs/{log}"
+//         pattern: "folders/{folder}/logs/{log}"
+//         pattern: "organizations/{organization}/logs/{log}"
+//         pattern: "billingAccounts/{billing_account}/logs/{log}"
 //       };
 //     }
 //
@@ -215,48 +192,10 @@
 //
 //     resources:
 //     - type: 'logging.googleapis.com/LogEntry'
-//       name_descriptor:
-//         - pattern: "projects/{project}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//           parent_name_extractor: "projects/{project}"
-//         - pattern: "folders/{folder}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//           parent_name_extractor: "folders/{folder}"
-//         - pattern: "organizations/{organization}/logs/{log}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Organization"
-//           parent_name_extractor: "organizations/{organization}"
-//         - pattern: "billingAccounts/{billing_account}/logs/{log}"
-//           parent_type: "billing.googleapis.com/BillingAccount"
-//           parent_name_extractor: "billingAccounts/{billing_account}"
-//
-// For flexible resources, the resource name doesn't contain parent names, but
-// the resource itself has parents for policy evaluation.
-//
-// Example:
-//
-//     message Shelf {
-//       option (google.api.resource) = {
-//         type: "library.googleapis.com/Shelf"
-//         name_descriptor: {
-//           pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//         }
-//         name_descriptor: {
-//           pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
-//         }
-//       };
-//     }
-//
-// The ResourceDescriptor Yaml config will look like:
-//
-//     resources:
-//     - type: 'library.googleapis.com/Shelf'
-//       name_descriptor:
-//         - pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Project"
-//         - pattern: "shelves/{shelf}"
-//           parent_type: "cloudresourcemanager.googleapis.com/Folder"
+//       pattern: "projects/{project}/logs/{log}"
+//       pattern: "folders/{folder}/logs/{log}"
+//       pattern: "organizations/{organization}/logs/{log}"
+//       pattern: "billingAccounts/{billing_account}/logs/{log}"
 type ResourceDescriptor struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
diff --git a/vendor/google.golang.org/grpc/attributes/attributes.go b/vendor/google.golang.org/grpc/attributes/attributes.go
index 6ff2792..ae13dda 100644
--- a/vendor/google.golang.org/grpc/attributes/attributes.go
+++ b/vendor/google.golang.org/grpc/attributes/attributes.go
@@ -69,7 +69,9 @@
 // bool' is implemented for a value in the attributes, it is called to
 // determine if the value matches the one stored in the other attributes.  If
 // Equal is not implemented, standard equality is used to determine if the two
-// values are equal.
+// values are equal. Note that some types (e.g. maps) aren't comparable by
+// default, so they must be wrapped in a struct, or in an alias type, with Equal
+// defined.
 func (a *Attributes) Equal(o *Attributes) bool {
 	if a == nil && o == nil {
 		return true
diff --git a/vendor/google.golang.org/grpc/balancer/balancer.go b/vendor/google.golang.org/grpc/balancer/balancer.go
index 178de08..bcc6f54 100644
--- a/vendor/google.golang.org/grpc/balancer/balancer.go
+++ b/vendor/google.golang.org/grpc/balancer/balancer.go
@@ -174,25 +174,32 @@
 
 // BuildOptions contains additional information for Build.
 type BuildOptions struct {
-	// DialCreds is the transport credential the Balancer implementation can
-	// use to dial to a remote load balancer server. The Balancer implementations
-	// can ignore this if it does not need to talk to another party securely.
+	// DialCreds is the transport credentials to use when communicating with a
+	// remote load balancer server. Balancer implementations which do not
+	// communicate with a remote load balancer server can ignore this field.
 	DialCreds credentials.TransportCredentials
-	// CredsBundle is the credentials bundle that the Balancer can use.
+	// CredsBundle is the credentials bundle to use when communicating with a
+	// remote load balancer server. Balancer implementations which do not
+	// communicate with a remote load balancer server can ignore this field.
 	CredsBundle credentials.Bundle
-	// Dialer is the custom dialer the Balancer implementation can use to dial
-	// to a remote load balancer server. The Balancer implementations
-	// can ignore this if it doesn't need to talk to remote balancer.
+	// Dialer is the custom dialer to use when communicating with a remote load
+	// balancer server. Balancer implementations which do not communicate with a
+	// remote load balancer server can ignore this field.
 	Dialer func(context.Context, string) (net.Conn, error)
-	// ChannelzParentID is the entity parent's channelz unique identification number.
+	// Authority is the server name to use as part of the authentication
+	// handshake when communicating with a remote load balancer server. Balancer
+	// implementations which do not communicate with a remote load balancer
+	// server can ignore this field.
+	Authority string
+	// ChannelzParentID is the parent ClientConn's channelz ID.
 	ChannelzParentID int64
 	// CustomUserAgent is the custom user agent set on the parent ClientConn.
 	// The balancer should set the same custom user agent if it creates a
 	// ClientConn.
 	CustomUserAgent string
-	// Target contains the parsed address info of the dial target. It is the same resolver.Target as
-	// passed to the resolver.
-	// See the documentation for the resolver.Target type for details about what it contains.
+	// Target contains the parsed address info of the dial target. It is the
+	// same resolver.Target as passed to the resolver. See the documentation for
+	// the resolver.Target type for details about what it contains.
 	Target resolver.Target
 }
 
diff --git a/vendor/google.golang.org/grpc/clientconn.go b/vendor/google.golang.org/grpc/clientconn.go
index 5a9e7d7..28f09dc 100644
--- a/vendor/google.golang.org/grpc/clientconn.go
+++ b/vendor/google.golang.org/grpc/clientconn.go
@@ -83,13 +83,13 @@
 	// errTransportCredsAndBundle indicates that creds bundle is used together
 	// with other individual Transport Credentials.
 	errTransportCredsAndBundle = errors.New("grpc: credentials.Bundle may not be used with individual TransportCredentials")
-	// errTransportCredentialsMissing indicates that users want to transmit security
-	// information (e.g., OAuth2 token) which requires secure connection on an insecure
-	// connection.
+	// errNoTransportCredsInBundle indicated that the configured creds bundle
+	// returned a transport credentials which was nil.
+	errNoTransportCredsInBundle = errors.New("grpc: credentials.Bundle must return non-nil transport credentials")
+	// errTransportCredentialsMissing indicates that users want to transmit
+	// security information (e.g., OAuth2 token) which requires secure
+	// connection on an insecure connection.
 	errTransportCredentialsMissing = errors.New("grpc: the credentials require transport level security (use grpc.WithTransportCredentials() to set)")
-	// errCredentialsConflict indicates that grpc.WithTransportCredentials()
-	// and grpc.WithInsecure() are both called for a connection.
-	errCredentialsConflict = errors.New("grpc: transport credentials are set for an insecure connection (grpc.WithTransportCredentials() and grpc.WithInsecure() are both called)")
 )
 
 const (
@@ -177,17 +177,20 @@
 		cc.csMgr.channelzID = cc.channelzID
 	}
 
-	if !cc.dopts.insecure {
-		if cc.dopts.copts.TransportCredentials == nil && cc.dopts.copts.CredsBundle == nil {
-			return nil, errNoTransportSecurity
-		}
-		if cc.dopts.copts.TransportCredentials != nil && cc.dopts.copts.CredsBundle != nil {
-			return nil, errTransportCredsAndBundle
-		}
-	} else {
-		if cc.dopts.copts.TransportCredentials != nil || cc.dopts.copts.CredsBundle != nil {
-			return nil, errCredentialsConflict
-		}
+	if cc.dopts.copts.TransportCredentials == nil && cc.dopts.copts.CredsBundle == nil {
+		return nil, errNoTransportSecurity
+	}
+	if cc.dopts.copts.TransportCredentials != nil && cc.dopts.copts.CredsBundle != nil {
+		return nil, errTransportCredsAndBundle
+	}
+	if cc.dopts.copts.CredsBundle != nil && cc.dopts.copts.CredsBundle.TransportCredentials() == nil {
+		return nil, errNoTransportCredsInBundle
+	}
+	transportCreds := cc.dopts.copts.TransportCredentials
+	if transportCreds == nil {
+		transportCreds = cc.dopts.copts.CredsBundle.TransportCredentials()
+	}
+	if transportCreds.Info().SecurityProtocol == "insecure" {
 		for _, cd := range cc.dopts.copts.PerRPCCredentials {
 			if cd.RequireTransportSecurity() {
 				return nil, errTransportCredentialsMissing
@@ -282,6 +285,7 @@
 		DialCreds:        credsClone,
 		CredsBundle:      cc.dopts.copts.CredsBundle,
 		Dialer:           cc.dopts.copts.Dialer,
+		Authority:        cc.authority,
 		CustomUserAgent:  cc.dopts.copts.UserAgent,
 		ChannelzParentID: cc.channelzID,
 		Target:           cc.parsedTarget,
@@ -629,7 +633,10 @@
 	}
 
 	var ret error
-	if cc.dopts.disableServiceConfig || s.ServiceConfig == nil {
+	if cc.dopts.disableServiceConfig {
+		channelz.Infof(logger, cc.channelzID, "ignoring service config from resolver (%v) and applying the default because service config is disabled", s.ServiceConfig)
+		cc.maybeApplyDefaultServiceConfig(s.Addresses)
+	} else if s.ServiceConfig == nil {
 		cc.maybeApplyDefaultServiceConfig(s.Addresses)
 		// TODO: do we need to apply a failing LB policy if there is no
 		// default, per the error handling design?
diff --git a/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/google.golang.org/grpc/credentials/credentials.go
index a671107..96ff187 100644
--- a/vendor/google.golang.org/grpc/credentials/credentials.go
+++ b/vendor/google.golang.org/grpc/credentials/credentials.go
@@ -178,8 +178,18 @@
 //
 // This API is experimental.
 type Bundle interface {
+	// TransportCredentials returns the transport credentials from the Bundle.
+	//
+	// Implementations must return non-nil transport credentials. If transport
+	// security is not needed by the Bundle, implementations may choose to
+	// return insecure.NewCredentials().
 	TransportCredentials() TransportCredentials
+
+	// PerRPCCredentials returns the per-RPC credentials from the Bundle.
+	//
+	// May be nil if per-RPC credentials are not needed.
 	PerRPCCredentials() PerRPCCredentials
+
 	// NewWithMode should make a copy of Bundle, and switch mode. Modifying the
 	// existing Bundle may cause races.
 	//
diff --git a/vendor/google.golang.org/grpc/credentials/insecure/insecure.go b/vendor/google.golang.org/grpc/credentials/insecure/insecure.go
new file mode 100644
index 0000000..4fbed12
--- /dev/null
+++ b/vendor/google.golang.org/grpc/credentials/insecure/insecure.go
@@ -0,0 +1,72 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+// Package insecure provides an implementation of the
+// credentials.TransportCredentials interface which disables transport security.
+package insecure
+
+import (
+	"context"
+	"net"
+
+	"google.golang.org/grpc/credentials"
+)
+
+// NewCredentials returns a credentials which disables transport security.
+//
+// Note that using this credentials with per-RPC credentials which require
+// transport security is incompatible and will cause grpc.Dial() to fail.
+func NewCredentials() credentials.TransportCredentials {
+	return insecureTC{}
+}
+
+// insecureTC implements the insecure transport credentials. The handshake
+// methods simply return the passed in net.Conn and set the security level to
+// NoSecurity.
+type insecureTC struct{}
+
+func (insecureTC) ClientHandshake(ctx context.Context, _ string, conn net.Conn) (net.Conn, credentials.AuthInfo, error) {
+	return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil
+}
+
+func (insecureTC) ServerHandshake(conn net.Conn) (net.Conn, credentials.AuthInfo, error) {
+	return conn, info{credentials.CommonAuthInfo{SecurityLevel: credentials.NoSecurity}}, nil
+}
+
+func (insecureTC) Info() credentials.ProtocolInfo {
+	return credentials.ProtocolInfo{SecurityProtocol: "insecure"}
+}
+
+func (insecureTC) Clone() credentials.TransportCredentials {
+	return insecureTC{}
+}
+
+func (insecureTC) OverrideServerName(string) error {
+	return nil
+}
+
+// info contains the auth information for an insecure connection.
+// It implements the AuthInfo interface.
+type info struct {
+	credentials.CommonAuthInfo
+}
+
+// AuthType returns the type of info as a string.
+func (info) AuthType() string {
+	return "insecure"
+}
diff --git a/vendor/google.golang.org/grpc/dialoptions.go b/vendor/google.golang.org/grpc/dialoptions.go
index 40d8ba6..c4bf09f 100644
--- a/vendor/google.golang.org/grpc/dialoptions.go
+++ b/vendor/google.golang.org/grpc/dialoptions.go
@@ -27,9 +27,9 @@
 	"google.golang.org/grpc/backoff"
 	"google.golang.org/grpc/balancer"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/internal"
 	internalbackoff "google.golang.org/grpc/internal/backoff"
-	"google.golang.org/grpc/internal/envconfig"
 	"google.golang.org/grpc/internal/transport"
 	"google.golang.org/grpc/keepalive"
 	"google.golang.org/grpc/resolver"
@@ -50,7 +50,6 @@
 	bs              internalbackoff.Strategy
 	block           bool
 	returnLastError bool
-	insecure        bool
 	timeout         time.Duration
 	scChan          <-chan ServiceConfig
 	authority       string
@@ -228,18 +227,14 @@
 	})
 }
 
-// WithConnectParams configures the dialer to use the provided ConnectParams.
+// WithConnectParams configures the ClientConn to use the provided ConnectParams
+// for creating and maintaining connections to servers.
 //
 // The backoff configuration specified as part of the ConnectParams overrides
 // all defaults specified in
 // https://github.com/grpc/grpc/blob/master/doc/connection-backoff.md. Consider
 // using the backoff.DefaultConfig as a base, in cases where you want to
 // override only a subset of the backoff configuration.
-//
-// Experimental
-//
-// Notice: This API is EXPERIMENTAL and may be changed or removed in a
-// later release.
 func WithConnectParams(p ConnectParams) DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
 		o.bs = internalbackoff.Exponential{Config: p.Backoff}
@@ -277,7 +272,7 @@
 	})
 }
 
-// WithBlock returns a DialOption which makes caller of Dial blocks until the
+// WithBlock returns a DialOption which makes callers of Dial block until the
 // underlying connection is up. Without this, Dial returns immediately and
 // connecting the server happens in background.
 func WithBlock() DialOption {
@@ -303,11 +298,17 @@
 }
 
 // WithInsecure returns a DialOption which disables transport security for this
-// ClientConn. Note that transport security is required unless WithInsecure is
-// set.
+// ClientConn. Under the hood, it uses insecure.NewCredentials().
+//
+// Note that using this DialOption with per-RPC credentials (through
+// WithCredentialsBundle or WithPerRPCCredentials) which require transport
+// security is incompatible and will cause grpc.Dial() to fail.
+//
+// Deprecated: use WithTransportCredentials and insecure.NewCredentials() instead.
+// Will be supported throughout 1.x.
 func WithInsecure() DialOption {
 	return newFuncDialOption(func(o *dialOptions) {
-		o.insecure = true
+		o.copts.TransportCredentials = insecure.NewCredentials()
 	})
 }
 
@@ -580,7 +581,6 @@
 
 func defaultDialOptions() dialOptions {
 	return dialOptions{
-		disableRetry:    !envconfig.Retry,
 		healthCheckFunc: internal.HealthCheckFunc,
 		copts: transport.ConnectOptions{
 			WriteBufferSize: defaultWriteBufSize,
diff --git a/vendor/google.golang.org/grpc/grpclog/loggerv2.go b/vendor/google.golang.org/grpc/grpclog/loggerv2.go
index 34098bb..7c1f664 100644
--- a/vendor/google.golang.org/grpc/grpclog/loggerv2.go
+++ b/vendor/google.golang.org/grpc/grpclog/loggerv2.go
@@ -248,12 +248,12 @@
 // later release.
 type DepthLoggerV2 interface {
 	LoggerV2
-	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	InfoDepth(depth int, args ...interface{})
-	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	WarningDepth(depth int, args ...interface{})
-	// ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	ErrorDepth(depth int, args ...interface{})
-	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	FatalDepth(depth int, args ...interface{})
 }
diff --git a/vendor/google.golang.org/grpc/internal/channelz/funcs.go b/vendor/google.golang.org/grpc/internal/channelz/funcs.go
index 6d5760d..cd18075 100644
--- a/vendor/google.golang.org/grpc/internal/channelz/funcs.go
+++ b/vendor/google.golang.org/grpc/internal/channelz/funcs.go
@@ -204,9 +204,9 @@
 		trace:       &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
 	if pid == 0 {
-		db.get().addChannel(id, cn, true, pid, ref)
+		db.get().addChannel(id, cn, true, pid)
 	} else {
-		db.get().addChannel(id, cn, false, pid, ref)
+		db.get().addChannel(id, cn, false, pid)
 	}
 	return id
 }
@@ -228,7 +228,7 @@
 		pid:     pid,
 		trace:   &channelTrace{createdTime: time.Now(), events: make([]*TraceEvent, 0, getMaxTraceEntry())},
 	}
-	db.get().addSubChannel(id, sc, pid, ref)
+	db.get().addSubChannel(id, sc, pid)
 	return id
 }
 
@@ -258,7 +258,7 @@
 	}
 	id := idGen.genID()
 	ls := &listenSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addListenSocket(id, ls, pid, ref)
+	db.get().addListenSocket(id, ls, pid)
 	return id
 }
 
@@ -273,11 +273,11 @@
 	}
 	id := idGen.genID()
 	ns := &normalSocket{refName: ref, s: s, id: id, pid: pid}
-	db.get().addNormalSocket(id, ns, pid, ref)
+	db.get().addNormalSocket(id, ns, pid)
 	return id
 }
 
-// RemoveEntry removes an entry with unique channelz trakcing id to be id from
+// RemoveEntry removes an entry with unique channelz tracking id to be id from
 // channelz database.
 func RemoveEntry(id int64) {
 	db.get().removeEntry(id)
@@ -333,7 +333,7 @@
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64, ref string) {
+func (c *channelMap) addChannel(id int64, cn *channel, isTopChannel bool, pid int64) {
 	c.mu.Lock()
 	cn.cm = c
 	cn.trace.cm = c
@@ -346,7 +346,7 @@
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64, ref string) {
+func (c *channelMap) addSubChannel(id int64, sc *subChannel, pid int64) {
 	c.mu.Lock()
 	sc.cm = c
 	sc.trace.cm = c
@@ -355,7 +355,7 @@
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64, ref string) {
+func (c *channelMap) addListenSocket(id int64, ls *listenSocket, pid int64) {
 	c.mu.Lock()
 	ls.cm = c
 	c.listenSockets[id] = ls
@@ -363,7 +363,7 @@
 	c.mu.Unlock()
 }
 
-func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64, ref string) {
+func (c *channelMap) addNormalSocket(id int64, ns *normalSocket, pid int64) {
 	c.mu.Lock()
 	ns.cm = c
 	c.normalSockets[id] = ns
diff --git a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
index 9f25a67..6f02725 100644
--- a/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
+++ b/vendor/google.golang.org/grpc/internal/envconfig/envconfig.go
@@ -22,20 +22,14 @@
 import (
 	"os"
 	"strings"
-
-	xdsenv "google.golang.org/grpc/internal/xds/env"
 )
 
 const (
 	prefix          = "GRPC_GO_"
-	retryStr        = prefix + "RETRY"
 	txtErrIgnoreStr = prefix + "IGNORE_TXT_ERRORS"
 )
 
 var (
-	// Retry is enabled unless explicitly disabled via "GRPC_GO_RETRY=off" or
-	// if XDS retry support is explicitly disabled.
-	Retry = !strings.EqualFold(os.Getenv(retryStr), "off") && xdsenv.RetrySupport
 	// TXTErrIgnore is set if TXT errors should be ignored ("GRPC_GO_IGNORE_TXT_ERRORS" is not "false").
 	TXTErrIgnore = !strings.EqualFold(os.Getenv(txtErrIgnoreStr), "false")
 )
diff --git a/vendor/google.golang.org/grpc/internal/envconfig/xds.go b/vendor/google.golang.org/grpc/internal/envconfig/xds.go
new file mode 100644
index 0000000..9bad03c
--- /dev/null
+++ b/vendor/google.golang.org/grpc/internal/envconfig/xds.go
@@ -0,0 +1,97 @@
+/*
+ *
+ * Copyright 2020 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package envconfig
+
+import (
+	"os"
+	"strings"
+)
+
+const (
+	// XDSBootstrapFileNameEnv is the env variable to set bootstrap file name.
+	// Do not use this and read from env directly. Its value is read and kept in
+	// variable BootstrapFileName.
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileNameEnv = "GRPC_XDS_BOOTSTRAP"
+	// XDSBootstrapFileContentEnv is the env variable to set bootstrapp file
+	// content. Do not use this and read from env directly. Its value is read
+	// and kept in variable BootstrapFileName.
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileContentEnv = "GRPC_XDS_BOOTSTRAP_CONFIG"
+
+	ringHashSupportEnv           = "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH"
+	clientSideSecuritySupportEnv = "GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT"
+	aggregateAndDNSSupportEnv    = "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER"
+	rbacSupportEnv               = "GRPC_XDS_EXPERIMENTAL_RBAC"
+	federationEnv                = "GRPC_EXPERIMENTAL_XDS_FEDERATION"
+	rlsInXDSEnv                  = "GRPC_EXPERIMENTAL_XDS_RLS_LB"
+
+	c2pResolverTestOnlyTrafficDirectorURIEnv = "GRPC_TEST_ONLY_GOOGLE_C2P_RESOLVER_TRAFFIC_DIRECTOR_URI"
+)
+
+var (
+	// XDSBootstrapFileName holds the name of the file which contains xDS
+	// bootstrap configuration. Users can specify the location of the bootstrap
+	// file by setting the environment variable "GRPC_XDS_BOOTSTRAP".
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileName = os.Getenv(XDSBootstrapFileNameEnv)
+	// XDSBootstrapFileContent holds the content of the xDS bootstrap
+	// configuration. Users can specify the bootstrap config by setting the
+	// environment variable "GRPC_XDS_BOOTSTRAP_CONFIG".
+	//
+	// When both bootstrap FileName and FileContent are set, FileName is used.
+	XDSBootstrapFileContent = os.Getenv(XDSBootstrapFileContentEnv)
+	// XDSRingHash indicates whether ring hash support is enabled, which can be
+	// disabled by setting the environment variable
+	// "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH" to "false".
+	XDSRingHash = !strings.EqualFold(os.Getenv(ringHashSupportEnv), "false")
+	// XDSClientSideSecurity is used to control processing of security
+	// configuration on the client-side.
+	//
+	// Note that there is no env var protection for the server-side because we
+	// have a brand new API on the server-side and users explicitly need to use
+	// the new API to get security integration on the server.
+	XDSClientSideSecurity = !strings.EqualFold(os.Getenv(clientSideSecuritySupportEnv), "false")
+	// XDSAggregateAndDNS indicates whether processing of aggregated cluster
+	// and DNS cluster is enabled, which can be enabled by setting the
+	// environment variable
+	// "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER" to
+	// "true".
+	XDSAggregateAndDNS = strings.EqualFold(os.Getenv(aggregateAndDNSSupportEnv), "true")
+
+	// XDSRBAC indicates whether xDS configured RBAC HTTP Filter is enabled,
+	// which can be disabled by setting the environment variable
+	// "GRPC_XDS_EXPERIMENTAL_RBAC" to "false".
+	XDSRBAC = !strings.EqualFold(os.Getenv(rbacSupportEnv), "false")
+
+	// XDSFederation indicates whether federation support is enabled.
+	XDSFederation = strings.EqualFold(os.Getenv(federationEnv), "true")
+
+	// XDSRLS indicates whether processing of Cluster Specifier plugins and
+	// support for the RLS CLuster Specifier is enabled, which can be enabled by
+	// setting the environment variable "GRPC_EXPERIMENTAL_XDS_RLS_LB" to
+	// "true".
+	XDSRLS = strings.EqualFold(os.Getenv(rlsInXDSEnv), "true")
+
+	// C2PResolverTestOnlyTrafficDirectorURI is the TD URI for testing.
+	C2PResolverTestOnlyTrafficDirectorURI = os.Getenv(c2pResolverTestOnlyTrafficDirectorURIEnv)
+)
diff --git a/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go b/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go
index e6f975c..30a3b42 100644
--- a/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go
+++ b/vendor/google.golang.org/grpc/internal/grpclog/grpclog.go
@@ -115,12 +115,12 @@
 // Notice: This type is EXPERIMENTAL and may be changed or removed in a
 // later release.
 type DepthLoggerV2 interface {
-	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// InfoDepth logs to INFO log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	InfoDepth(depth int, args ...interface{})
-	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// WarningDepth logs to WARNING log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	WarningDepth(depth int, args ...interface{})
-	// ErrorDetph logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// ErrorDepth logs to ERROR log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	ErrorDepth(depth int, args ...interface{})
-	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Print.
+	// FatalDepth logs to FATAL log at the specified depth. Arguments are handled in the manner of fmt.Println.
 	FatalDepth(depth int, args ...interface{})
 }
diff --git a/vendor/google.golang.org/grpc/internal/grpcutil/regex.go b/vendor/google.golang.org/grpc/internal/grpcutil/regex.go
index 2810a8b..7a092b2 100644
--- a/vendor/google.golang.org/grpc/internal/grpcutil/regex.go
+++ b/vendor/google.golang.org/grpc/internal/grpcutil/regex.go
@@ -20,9 +20,12 @@
 
 import "regexp"
 
-// FullMatchWithRegex returns whether the full string matches the regex provided.
-func FullMatchWithRegex(re *regexp.Regexp, string string) bool {
+// FullMatchWithRegex returns whether the full text matches the regex provided.
+func FullMatchWithRegex(re *regexp.Regexp, text string) bool {
+	if len(text) == 0 {
+		return re.MatchString(text)
+	}
 	re.Longest()
-	rem := re.FindString(string)
-	return len(rem) == len(string)
+	rem := re.FindString(text)
+	return len(rem) == len(text)
 }
diff --git a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go
index f262edd..97198c5 100644
--- a/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go
+++ b/vendor/google.golang.org/grpc/internal/transport/flowcontrol.go
@@ -136,12 +136,10 @@
 
 // newLimit updates the inflow window to a new value n.
 // It assumes that n is always greater than the old limit.
-func (f *inFlow) newLimit(n uint32) uint32 {
+func (f *inFlow) newLimit(n uint32) {
 	f.mu.Lock()
-	d := n - f.limit
 	f.limit = n
 	f.mu.Unlock()
-	return d
 }
 
 func (f *inFlow) maybeAdjust(n uint32) uint32 {
diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_client.go b/vendor/google.golang.org/grpc/internal/transport/http2_client.go
index 2521a7d..f0c72d3 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http2_client.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http2_client.go
@@ -201,6 +201,12 @@
 		}
 	}()
 
+	// gRPC, resolver, balancer etc. can specify arbitrary data in the
+	// Attributes field of resolver.Address, which is shoved into connectCtx
+	// and passed to the dialer and credential handshaker. This makes it possible for
+	// address specific arbitrary data to reach custom dialers and credential handshakers.
+	connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes})
+
 	conn, err := dial(connectCtx, opts.Dialer, addr, opts.UseProxy, opts.UserAgent)
 	if err != nil {
 		if opts.FailOnNonTempDialError {
@@ -245,11 +251,6 @@
 		}
 	}
 	if transportCreds != nil {
-		// gRPC, resolver, balancer etc. can specify arbitrary data in the
-		// Attributes field of resolver.Address, which is shoved into connectCtx
-		// and passed to the credential handshaker. This makes it possible for
-		// address specific arbitrary data to reach the credential handshaker.
-		connectCtx = icredentials.NewClientHandshakeInfoContext(connectCtx, credentials.ClientHandshakeInfo{Attributes: addr.Attributes})
 		rawConn := conn
 		// Pull the deadline from the connectCtx, which will be used for
 		// timeouts in the authentication protocol handshake. Can ignore the
@@ -587,7 +588,7 @@
 				return nil, err
 			}
 
-			return nil, status.Errorf(codes.Unauthenticated, "transport: %v", err)
+			return nil, status.Errorf(codes.Unauthenticated, "transport: per-RPC creds failed due to error: %v", err)
 		}
 		for k, v := range data {
 			// Capital header names are illegal in HTTP/2.
@@ -1556,7 +1557,7 @@
 	return b
 }
 
-// keepalive running in a separate goroutune makes sure the connection is alive by sending pings.
+// keepalive running in a separate goroutine makes sure the connection is alive by sending pings.
 func (t *http2Client) keepalive() {
 	p := &ping{data: [8]byte{}}
 	// True iff a ping has been sent, and no data has been received since then.
diff --git a/vendor/google.golang.org/grpc/internal/transport/http2_server.go b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
index f2cad9e..2c6eaf0 100644
--- a/vendor/google.golang.org/grpc/internal/transport/http2_server.go
+++ b/vendor/google.golang.org/grpc/internal/transport/http2_server.go
@@ -73,7 +73,6 @@
 	writerDone  chan struct{} // sync point to enable testing.
 	remoteAddr  net.Addr
 	localAddr   net.Addr
-	maxStreamID uint32               // max stream ID ever seen
 	authInfo    credentials.AuthInfo // auth info about the connection
 	inTapHandle tap.ServerInHandle
 	framer      *framer
@@ -123,6 +122,11 @@
 	bufferPool *bufferPool
 
 	connectionID uint64
+
+	// maxStreamMu guards the maximum stream ID
+	// This lock may not be taken if mu is already held.
+	maxStreamMu sync.Mutex
+	maxStreamID uint32 // max stream ID ever seen
 }
 
 // NewServerTransport creates a http2 transport with conn and configuration
@@ -334,6 +338,10 @@
 
 // operateHeader takes action on the decoded headers.
 func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func(*Stream), traceCtx func(context.Context, string) context.Context) (fatal bool) {
+	// Acquire max stream ID lock for entire duration
+	t.maxStreamMu.Lock()
+	defer t.maxStreamMu.Unlock()
+
 	streamID := frame.Header().StreamID
 
 	// frame.Truncated is set to true when framer detects that the current header
@@ -348,6 +356,15 @@
 		return false
 	}
 
+	if streamID%2 != 1 || streamID <= t.maxStreamID {
+		// illegal gRPC stream id.
+		if logger.V(logLevel) {
+			logger.Errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID)
+		}
+		return true
+	}
+	t.maxStreamID = streamID
+
 	buf := newRecvBuffer()
 	s := &Stream{
 		id:  streamID,
@@ -355,7 +372,6 @@
 		buf: buf,
 		fc:  &inFlow{limit: uint32(t.initialWindowSize)},
 	}
-
 	var (
 		// If a gRPC Response-Headers has already been received, then it means
 		// that the peer is speaking gRPC and we are in gRPC mode.
@@ -498,16 +514,6 @@
 		s.cancel()
 		return false
 	}
-	if streamID%2 != 1 || streamID <= t.maxStreamID {
-		t.mu.Unlock()
-		// illegal gRPC stream id.
-		if logger.V(logLevel) {
-			logger.Errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", streamID)
-		}
-		s.cancel()
-		return true
-	}
-	t.maxStreamID = streamID
 	if httpMethod != http.MethodPost {
 		t.mu.Unlock()
 		if logger.V(logLevel) {
@@ -1293,20 +1299,23 @@
 // Handles outgoing GoAway and returns true if loopy needs to put itself
 // in draining mode.
 func (t *http2Server) outgoingGoAwayHandler(g *goAway) (bool, error) {
+	t.maxStreamMu.Lock()
 	t.mu.Lock()
 	if t.state == closing { // TODO(mmukhi): This seems unnecessary.
 		t.mu.Unlock()
+		t.maxStreamMu.Unlock()
 		// The transport is closing.
 		return false, ErrConnClosing
 	}
-	sid := t.maxStreamID
 	if !g.headsUp {
 		// Stop accepting more streams now.
 		t.state = draining
+		sid := t.maxStreamID
 		if len(t.activeStreams) == 0 {
 			g.closeConn = true
 		}
 		t.mu.Unlock()
+		t.maxStreamMu.Unlock()
 		if err := t.framer.fr.WriteGoAway(sid, g.code, g.debugData); err != nil {
 			return false, err
 		}
@@ -1319,6 +1328,7 @@
 		return true, nil
 	}
 	t.mu.Unlock()
+	t.maxStreamMu.Unlock()
 	// For a graceful close, send out a GoAway with stream ID of MaxUInt32,
 	// Follow that with a ping and wait for the ack to come back or a timer
 	// to expire. During this time accept new streams since they might have
diff --git a/vendor/google.golang.org/grpc/internal/transport/proxy.go b/vendor/google.golang.org/grpc/internal/transport/proxy.go
index a662bf3..4159619 100644
--- a/vendor/google.golang.org/grpc/internal/transport/proxy.go
+++ b/vendor/google.golang.org/grpc/internal/transport/proxy.go
@@ -37,7 +37,7 @@
 	httpProxyFromEnvironment = http.ProxyFromEnvironment
 )
 
-func mapAddress(ctx context.Context, address string) (*url.URL, error) {
+func mapAddress(address string) (*url.URL, error) {
 	req := &http.Request{
 		URL: &url.URL{
 			Scheme: "https",
@@ -114,7 +114,7 @@
 // connection.
 func proxyDial(ctx context.Context, addr string, grpcUA string) (conn net.Conn, err error) {
 	newAddr := addr
-	proxyURL, err := mapAddress(ctx, addr)
+	proxyURL, err := mapAddress(addr)
 	if err != nil {
 		return nil, err
 	}
diff --git a/vendor/google.golang.org/grpc/internal/xds/env/env.go b/vendor/google.golang.org/grpc/internal/xds/env/env.go
deleted file mode 100644
index 87d3c24..0000000
--- a/vendor/google.golang.org/grpc/internal/xds/env/env.go
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- *
- * Copyright 2020 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-// Package env acts a single source of definition for all environment variables
-// related to the xDS implementation in gRPC.
-package env
-
-import (
-	"os"
-	"strings"
-)
-
-const (
-	// BootstrapFileNameEnv is the env variable to set bootstrap file name.
-	// Do not use this and read from env directly. Its value is read and kept in
-	// variable BootstrapFileName.
-	//
-	// When both bootstrap FileName and FileContent are set, FileName is used.
-	BootstrapFileNameEnv = "GRPC_XDS_BOOTSTRAP"
-	// BootstrapFileContentEnv is the env variable to set bootstrapp file
-	// content. Do not use this and read from env directly. Its value is read
-	// and kept in variable BootstrapFileName.
-	//
-	// When both bootstrap FileName and FileContent are set, FileName is used.
-	BootstrapFileContentEnv = "GRPC_XDS_BOOTSTRAP_CONFIG"
-
-	ringHashSupportEnv           = "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH"
-	clientSideSecuritySupportEnv = "GRPC_XDS_EXPERIMENTAL_SECURITY_SUPPORT"
-	aggregateAndDNSSupportEnv    = "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER"
-	retrySupportEnv              = "GRPC_XDS_EXPERIMENTAL_ENABLE_RETRY"
-	rbacSupportEnv               = "GRPC_XDS_EXPERIMENTAL_RBAC"
-
-	c2pResolverSupportEnv                    = "GRPC_EXPERIMENTAL_GOOGLE_C2P_RESOLVER"
-	c2pResolverTestOnlyTrafficDirectorURIEnv = "GRPC_TEST_ONLY_GOOGLE_C2P_RESOLVER_TRAFFIC_DIRECTOR_URI"
-)
-
-var (
-	// BootstrapFileName holds the name of the file which contains xDS bootstrap
-	// configuration. Users can specify the location of the bootstrap file by
-	// setting the environment variable "GRPC_XDS_BOOTSTRAP".
-	//
-	// When both bootstrap FileName and FileContent are set, FileName is used.
-	BootstrapFileName = os.Getenv(BootstrapFileNameEnv)
-	// BootstrapFileContent holds the content of the xDS bootstrap
-	// configuration. Users can specify the bootstrap config by
-	// setting the environment variable "GRPC_XDS_BOOTSTRAP_CONFIG".
-	//
-	// When both bootstrap FileName and FileContent are set, FileName is used.
-	BootstrapFileContent = os.Getenv(BootstrapFileContentEnv)
-	// RingHashSupport indicates whether ring hash support is enabled, which can
-	// be disabled by setting the environment variable
-	// "GRPC_XDS_EXPERIMENTAL_ENABLE_RING_HASH" to "false".
-	RingHashSupport = !strings.EqualFold(os.Getenv(ringHashSupportEnv), "false")
-	// ClientSideSecuritySupport is used to control processing of security
-	// configuration on the client-side.
-	//
-	// Note that there is no env var protection for the server-side because we
-	// have a brand new API on the server-side and users explicitly need to use
-	// the new API to get security integration on the server.
-	ClientSideSecuritySupport = !strings.EqualFold(os.Getenv(clientSideSecuritySupportEnv), "false")
-	// AggregateAndDNSSupportEnv indicates whether processing of aggregated
-	// cluster and DNS cluster is enabled, which can be enabled by setting the
-	// environment variable
-	// "GRPC_XDS_EXPERIMENTAL_ENABLE_AGGREGATE_AND_LOGICAL_DNS_CLUSTER" to
-	// "true".
-	AggregateAndDNSSupportEnv = strings.EqualFold(os.Getenv(aggregateAndDNSSupportEnv), "true")
-
-	// RetrySupport indicates whether xDS retry is enabled.
-	RetrySupport = !strings.EqualFold(os.Getenv(retrySupportEnv), "false")
-
-	// RBACSupport indicates whether xDS configured RBAC HTTP Filter is enabled,
-	// which can be disabled by setting the environment variable
-	// "GRPC_XDS_EXPERIMENTAL_RBAC" to "false".
-	RBACSupport = !strings.EqualFold(os.Getenv(rbacSupportEnv), "false")
-
-	// C2PResolverSupport indicates whether support for C2P resolver is enabled.
-	// This can be enabled by setting the environment variable
-	// "GRPC_EXPERIMENTAL_GOOGLE_C2P_RESOLVER" to "true".
-	C2PResolverSupport = strings.EqualFold(os.Getenv(c2pResolverSupportEnv), "true")
-	// C2PResolverTestOnlyTrafficDirectorURI is the TD URI for testing.
-	C2PResolverTestOnlyTrafficDirectorURI = os.Getenv(c2pResolverTestOnlyTrafficDirectorURIEnv)
-)
diff --git a/vendor/google.golang.org/grpc/pickfirst.go b/vendor/google.golang.org/grpc/pickfirst.go
index f194d14..5168b62 100644
--- a/vendor/google.golang.org/grpc/pickfirst.go
+++ b/vendor/google.golang.org/grpc/pickfirst.go
@@ -125,7 +125,7 @@
 }
 
 func (b *pickfirstBalancer) ExitIdle() {
-	if b.state == connectivity.Idle {
+	if b.sc != nil && b.state == connectivity.Idle {
 		b.sc.Connect()
 	}
 }
diff --git a/vendor/google.golang.org/grpc/regenerate.sh b/vendor/google.golang.org/grpc/regenerate.sh
index dfd3226..58c802f 100644
--- a/vendor/google.golang.org/grpc/regenerate.sh
+++ b/vendor/google.golang.org/grpc/regenerate.sh
@@ -76,7 +76,21 @@
 # These options of the form 'Mfoo.proto=bar' instruct the codegen to use an
 # import path of 'bar' in the generated code when 'foo.proto' is imported in
 # one of the sources.
-OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core
+#
+# Note that the protos listed here are all for testing purposes. All protos to
+# be used externally should have a go_package option (and they don't need to be
+# listed here).
+OPTS=Mgrpc/service_config/service_config.proto=/internal/proto/grpc_service_config,\
+Mgrpc/core/stats.proto=google.golang.org/grpc/interop/grpc_testing/core,\
+Mgrpc/testing/benchmark_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/stats.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/report_qps_scenario_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/messages.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/worker_service.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/control.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/test.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/payloads.proto=google.golang.org/grpc/interop/grpc_testing,\
+Mgrpc/testing/empty.proto=google.golang.org/grpc/interop/grpc_testing
 
 for src in ${SOURCES[@]}; do
   echo "protoc ${src}"
@@ -85,7 +99,6 @@
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
     -I${WORKDIR}/protobuf/src \
-    -I${WORKDIR}/istio \
     ${src}
 done
 
@@ -96,14 +109,13 @@
     -I${WORKDIR}/grpc-proto \
     -I${WORKDIR}/googleapis \
     -I${WORKDIR}/protobuf/src \
-    -I${WORKDIR}/istio \
     ${src}
 done
 
 # The go_package option in grpc/lookup/v1/rls.proto doesn't match the
 # current location. Move it into the right place.
-mkdir -p ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1
-mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/balancer/rls/internal/proto/grpc_lookup_v1
+mkdir -p ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1
+mv ${WORKDIR}/out/google.golang.org/grpc/lookup/grpc_lookup_v1/* ${WORKDIR}/out/google.golang.org/grpc/internal/proto/grpc_lookup_v1
 
 # grpc_testingv3/testv3.pb.go is not re-generated because it was
 # intentionally generated by an older version of protoc-gen-go.
diff --git a/vendor/google.golang.org/grpc/rpc_util.go b/vendor/google.golang.org/grpc/rpc_util.go
index 87987a2..5d407b0 100644
--- a/vendor/google.golang.org/grpc/rpc_util.go
+++ b/vendor/google.golang.org/grpc/rpc_util.go
@@ -712,13 +712,11 @@
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err)
 		}
-	} else {
-		size = len(d)
-	}
-	if size > maxReceiveMessageSize {
-		// TODO: Revisit the error code. Currently keep it consistent with java
-		// implementation.
-		return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", size, maxReceiveMessageSize)
+		if size > maxReceiveMessageSize {
+			// TODO: Revisit the error code. Currently keep it consistent with java
+			// implementation.
+			return nil, status.Errorf(codes.ResourceExhausted, "grpc: received message after decompression larger than max (%d vs. %d)", size, maxReceiveMessageSize)
+		}
 	}
 	return d, nil
 }
diff --git a/vendor/google.golang.org/grpc/status/status.go b/vendor/google.golang.org/grpc/status/status.go
index af2cffe..6d163b6 100644
--- a/vendor/google.golang.org/grpc/status/status.go
+++ b/vendor/google.golang.org/grpc/status/status.go
@@ -29,6 +29,7 @@
 
 import (
 	"context"
+	"errors"
 	"fmt"
 
 	spb "google.golang.org/genproto/googleapis/rpc/status"
@@ -117,18 +118,18 @@
 	return codes.Unknown
 }
 
-// FromContextError converts a context error into a Status.  It returns a
-// Status with codes.OK if err is nil, or a Status with codes.Unknown if err is
-// non-nil and not a context error.
+// FromContextError converts a context error or wrapped context error into a
+// Status.  It returns a Status with codes.OK if err is nil, or a Status with
+// codes.Unknown if err is non-nil and not a context error.
 func FromContextError(err error) *Status {
-	switch err {
-	case nil:
+	if err == nil {
 		return nil
-	case context.DeadlineExceeded:
-		return New(codes.DeadlineExceeded, err.Error())
-	case context.Canceled:
-		return New(codes.Canceled, err.Error())
-	default:
-		return New(codes.Unknown, err.Error())
 	}
+	if errors.Is(err, context.DeadlineExceeded) {
+		return New(codes.DeadlineExceeded, err.Error())
+	}
+	if errors.Is(err, context.Canceled) {
+		return New(codes.Canceled, err.Error())
+	}
+	return New(codes.Unknown, err.Error())
 }
diff --git a/vendor/google.golang.org/grpc/version.go b/vendor/google.golang.org/grpc/version.go
index 1a5fd58..9d3fd73 100644
--- a/vendor/google.golang.org/grpc/version.go
+++ b/vendor/google.golang.org/grpc/version.go
@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.42.0"
+const Version = "1.44.1-dev"
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 6923b53..e355751 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -21,11 +21,11 @@
 golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
 golang.org/x/text/unicode/norm
-# google.golang.org/genproto v0.0.0-20211207154714-918901c715cf
+# google.golang.org/genproto v0.0.0-20220208230804-65c12eb4c068
 ## explicit
 google.golang.org/genproto/googleapis/api/annotations
 google.golang.org/genproto/googleapis/rpc/status
-# google.golang.org/grpc v1.42.0
+# google.golang.org/grpc v1.44.0
 ## explicit
 google.golang.org/grpc
 google.golang.org/grpc/attributes
@@ -38,6 +38,7 @@
 google.golang.org/grpc/codes
 google.golang.org/grpc/connectivity
 google.golang.org/grpc/credentials
+google.golang.org/grpc/credentials/insecure
 google.golang.org/grpc/encoding
 google.golang.org/grpc/encoding/proto
 google.golang.org/grpc/grpclog
@@ -63,7 +64,6 @@
 google.golang.org/grpc/internal/syscall
 google.golang.org/grpc/internal/transport
 google.golang.org/grpc/internal/transport/networktype
-google.golang.org/grpc/internal/xds/env
 google.golang.org/grpc/keepalive
 google.golang.org/grpc/metadata
 google.golang.org/grpc/peer
diff --git a/voltha.pb b/voltha.pb
index 7887c0c..b5c2bc7 100644
--- a/voltha.pb
+++ b/voltha.pb
Binary files differ