diff --git a/context/context.go b/context/context.go
index 483a293..69da43c 100644
--- a/context/context.go
+++ b/context/context.go
@@ -517,6 +517,8 @@ func (ctx *FunctionContext) GetNativeContext() context.Context {
 }
 
 func (ctx *FunctionContext) SetNativeContext(c context.Context) {
+	ctx.mu.Lock()
+	defer ctx.mu.Unlock()
 	ctx.Ctx = c
 }
 
diff --git a/runtime/async/async.go b/runtime/async/async.go
index 3913595..efc8c87 100644
--- a/runtime/async/async.go
+++ b/runtime/async/async.go
@@ -10,7 +10,7 @@ import (
 	daprruntime "github.com/dapr/dapr/pkg/runtime"
 	dapr "github.com/dapr/go-sdk/service/common"
 	grpcsvc "github.com/dapr/go-sdk/service/grpc"
-	httpsvc "github.com/dapr/go-sdk/service/grpc"
+	httpsvc "github.com/dapr/go-sdk/service/http"
 	"k8s.io/klog/v2"
 
 	ofctx "github.com/OpenFunction/functions-framework-go/context"
@@ -25,6 +25,7 @@ const (
 )
 
 type Runtime struct {
+	protocol   string
 	port       string
 	pattern    string
 	handler    dapr.Service
@@ -49,24 +50,23 @@ func NewAsyncRuntime(port string, pattern string) (*Runtime, error) {
 		}, nil
 	}
 
-	var newService func(address string) (s dapr.Service, err error)
+	var handler dapr.Service
 	protocol := daprruntime.Protocol(os.Getenv(protocolEnvVar))
 	switch protocol {
 	case daprruntime.HTTPProtocol:
-		newService = httpsvc.NewService
-	case daprruntime.GRPCProtocol:
-		newService = grpcsvc.NewService
+		handler = httpsvc.NewService(fmt.Sprintf(":%s", port))
 	default:
 		protocol = daprruntime.GRPCProtocol
-		newService = grpcsvc.NewService
-	}
-	handler, err := newService(fmt.Sprintf(":%s", port))
-	if err != nil {
-		klog.Errorf("failed to create dapr %v service: %v\n", protocol, err)
-		return nil, err
+		service, err := grpcsvc.NewService(fmt.Sprintf(":%s", port))
+		if err != nil {
+			klog.Errorf("failed to create dapr grpc service: %v\n", err)
+			return nil, err
+		}
+		handler = service
 	}
 
 	return &Runtime{
+		protocol:   string(protocol),
 		port:       port,
 		pattern:    pattern,
 		handler:    handler,
@@ -75,7 +75,7 @@ func NewAsyncRuntime(port string, pattern string) (*Runtime, error) {
 }
 
 func (r *Runtime) Start(ctx context.Context) error {
-	klog.Infof("Async Function serving grpc: listening on port %s", r.port)
+	klog.Infof("Async Function serving %s: listening on port %s", r.protocol, r.port)
 	klog.Fatal(r.handler.Start())
 	return nil
 }
@@ -121,6 +121,7 @@ func (r *Runtime) RegisterOpenFunction(
 					input.Uri = input.ComponentName
 					funcErr = r.handler.AddBindingInvocationHandler(input.Uri, func(c context.Context, in *dapr.BindingEvent) (out []byte, err error) {
 						rm := runtime.NewRuntimeManager(ctx, prePlugins, postPlugins)
+						rm.FuncContext.SetNativeContext(c)
 						rm.FuncContext.SetEvent(n, in)
 						rm.FunctionRunWrapperWithHooks(rf.GetOpenFunctionFunction())
 
@@ -141,8 +142,12 @@ func (r *Runtime) RegisterOpenFunction(
 						PubsubName: input.ComponentName,
 						Topic:      input.Uri,
 					}
+					if r.protocol == string(daprruntime.HTTPProtocol) {
+						sub.Route = fmt.Sprintf("/%s", input.Uri)
+					}
 					funcErr = r.handler.AddTopicEventHandler(sub, func(c context.Context, e *dapr.TopicEvent) (retry bool, err error) {
 						rm := runtime.NewRuntimeManager(ctx, prePlugins, postPlugins)
+						rm.FuncContext.SetNativeContext(c)
 						rm.FuncContext.SetEvent(n, e)
 						rm.FunctionRunWrapperWithHooks(rf.GetOpenFunctionFunction())