diff --git a/fastbootd/transport.h b/fastbootd/transport.h
new file mode 100644
index 0000000..209340d
--- /dev/null
+++ b/fastbootd/transport.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef _FASTBOOTD_TRANSPORT_H_
+#define _FASTBOOTD_TRANSPORT_H_
+
+#include <stdbool.h>
+
+struct transport_handle {
+    struct transport *transport;
+
+    bool stopped;
+};
+
+struct transport {
+    void (*init)();
+    void (*close)(struct transport_handle *thandle);
+    ssize_t (*read)(struct transport_handle *thandle, void *data, size_t len);
+    ssize_t (*write)(struct transport_handle *thandle, const void *data, size_t len);
+    struct transport_handle *(*connect)(struct transport *transport);
+    bool stopped;
+};
+
+void transport_register(struct transport *transport);
+ssize_t transport_handle_write(struct transport_handle *handle, char *buffer, size_t len);
+int transport_handle_download(struct transport_handle *handle, size_t len);
+
+#endif