diff --git a/transport/HidlTransportUtils.cpp b/transport/HidlTransportUtils.cpp
new file mode 100644
index 0000000..eda9b8a
--- /dev/null
+++ b/transport/HidlTransportUtils.cpp
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#include <hidl/HidlTransportUtils.h>
+
+namespace android {
+namespace hardware {
+namespace details {
+
+Return<bool> canCastInterface(::android::hidl::base::V1_0::IBase* interface,
+        const char* castTo, bool emitError) {
+    if (interface == nullptr) {
+        return false;
+    }
+
+    bool canCast = false;
+    auto chainRet = interface->interfaceChain([&](const hidl_vec<hidl_string> &types) {
+        for (size_t i = 0; i < types.size(); i++) {
+            if (types[i] == castTo) {
+                canCast = true;
+                break;
+            }
+        }
+    });
+
+    if (!chainRet.isOk()) {
+        // call fails, propagate the error if emitError
+        return emitError
+                ? details::StatusOf<void, bool>(chainRet)
+                : Return<bool>(false);
+    }
+
+    return canCast;
+}
+
+std::string getDescriptor(::android::hidl::base::V1_0::IBase* interface) {
+    std::string myDescriptor{};
+    auto ret = interface->interfaceDescriptor([&](const hidl_string &types) {
+        myDescriptor = types.c_str();
+    });
+    ret.isOk(); // ignored, return empty string if not isOk()
+    return myDescriptor;
+}
+
+}  // namespace details
+}  // namespace hardware
+}  // namespace android