Reset mtu to default value after reconnect

In theory each time a new connection is established, central and
peripheral device should renegotiate the mtu. However this is not always
happening which leads to wrong MTU assumptions. The most likely assumption
is the default size of 23 bytes.

Task-number: QTBUG-66056
Change-Id: I27d2cd89558b0c08925d31e2c7ed42ee45c303a4
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/bluetooth/qlowenergycontroller_bluez.cpp b/src/bluetooth/qlowenergycontroller_bluez.cpp
index c4ff0e7f..40519b51 100644
--- a/src/bluetooth/qlowenergycontroller_bluez.cpp
+++ b/src/bluetooth/qlowenergycontroller_bluez.cpp
@@ -796,6 +796,7 @@ void QLowEnergyControllerPrivateBluez::resetController()
     requestPending = false;
     encryptionChangePending = false;
     receivedMtuExchangeRequest = false;
+    mtuSize = ATT_DEFAULT_LE_MTU;
     securityLevelValue = -1;
     connectionHandle = 0;