m-gorecki commented on code in PR #192:
URL: https://github.com/apache/mynewt-newtmgr/pull/192#discussion_r1052005242


##########
newtmgr/bll/bll_common.go:
##########
@@ -53,18 +53,25 @@ func exchangeMtu(cln ble.Client, preferredMtu uint16) 
(uint16, error) {
                        break
                }
 
-               // If macOS returned a value other than 23, then MTU exchange 
has
+               // If macOS returned a value higher than 23, then MTU exchange 
has
                // completed.
-               if mtu != bledefs.BLE_ATT_MTU_DFLT {
+               if mtu > bledefs.BLE_ATT_MTU_DFLT {
                        break
                }
 
                // Otherwise, give the OS some time to perform the exchange.
-               log.Debugf("macOS reports an MTU of 23.  " +
+               log.Debugf("macOS reports an MTU of <=23.  " +
                        "Assume exchange hasn't completed; wait and requery.")
                time.Sleep(time.Second)
        }
 
+       // On some versions of mac (e.g. monterey) workaround with
+       // looping three times seems to not work anymore. If after
+       // performing three loops MTU is still <=23 than hardcode it to 185.
+       if mtu <= bledefs.BLE_ATT_MTU_DFLT {

Review Comment:
   Fixed it



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