On BR/EDR MTU is negotiated using L2CAP configuration and not by
ATT MTU exchange procedure.
---
android/gatt.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/android/gatt.c b/android/gatt.c
index 49fff6f..45d70fd 100644
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -1519,6 +1519,14 @@ static void connect_cb(GIOChannel *io, GError *gerr, gpointer user_data)
goto reply;
}
+ /* on BR/EDR MTU must not be less then minimal allowed MTU */
+ if (cid != ATT_CID && mtu < ATT_DEFAULT_L2CAP_MTU) {
+ error("gatt: MTU too small (%u bytes)", mtu);
+ device_set_state(dev, DEVICE_DISCONNECTED);
+ status = GATT_FAILURE;
+ goto reply;
+ }
+
DBG("mtu %u cid %u", mtu, cid);
/* on LE we always start with default MTU */
--
1.9.3
--
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