1 files changed, 8 insertions, 3 deletions
diff --git a/components/script/dom/bluetoothremotegattdescriptor.rs b/components/script/dom/bluetoothremotegattdescriptor.rs
index 94023d6ffa0..54a6b1142b3 100644
--- a/components/script/dom/bluetoothremotegattdescriptor.rs
+++ b/components/script/dom/bluetoothremotegattdescriptor.rs
@@ -11,6 +11,7 @@ use dom::bindings::codegen::Bindings::BluetoothRemoteGATTDescriptorBinding;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTDescriptorBinding::BluetoothRemoteGATTDescriptorMethods;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerMethods;
 use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServiceBinding::BluetoothRemoteGATTServiceMethods;
+use dom::bindings::codegen::UnionTypes::ArrayBufferViewOrArrayBuffer;
 use dom::bindings::error::Error::{self, InvalidModification, Network, Security};
 use dom::bindings::reflector::{DomObject, Reflector, reflect_dom_object};
 use dom::bindings::root::{Dom, DomRoot};
@@ -114,7 +115,7 @@ impl BluetoothRemoteGATTDescriptorMethods for BluetoothRemoteGATTDescriptor {
 
     #[allow(unrooted_must_root)]
     // https://webbluetoothcg.github.io/web-bluetooth/#dom-bluetoothremotegattdescriptor-writevalue
-    fn WriteValue(&self, value: Vec<u8>) -> Rc<Promise> {
+    fn WriteValue(&self, value: ArrayBufferViewOrArrayBuffer) -> Rc<Promise> {
         let p = Promise::new(&self.global());
 
         // Step 1.
@@ -124,7 +125,11 @@ impl BluetoothRemoteGATTDescriptorMethods for BluetoothRemoteGATTDescriptor {
         }
 
         // Step 2 - 3.
-        if value.len() > MAXIMUM_ATTRIBUTE_LENGTH {
+        let v = match value {
+            ArrayBufferViewOrArrayBuffer::ArrayBufferView(mut avb) => avb.to_vec(),
+            ArrayBufferViewOrArrayBuffer::ArrayBuffer(mut ab) => ab.to_vec(),
+        };
+        if v.len() > MAXIMUM_ATTRIBUTE_LENGTH {
             p.reject_error(InvalidModification);
             return p;
         }
@@ -140,7 +145,7 @@ impl BluetoothRemoteGATTDescriptorMethods for BluetoothRemoteGATTDescriptor {
         // in writeValue function and in handle_response function.
         let sender = response_async(&p, self);
         self.get_bluetooth_thread().send(
-            BluetoothRequest::WriteValue(self.get_instance_id(), value, sender)).unwrap();
+            BluetoothRequest::WriteValue(self.get_instance_id(), v, sender)).unwrap();
         return p;
     }
 }