AndroidPeripheral.requestMtu() throws OutOfOrderGattCallbackException

[doudasek]

When requesting MTU change, it internally succeeded but throws an exception. After that call, I am able to send for example 170B (20B before the call). You can see in logcat that it has status 0, which is GATT_SUCCESS in that callback.

Library version: 0.3.0
Phone: Pixel 5, Android 11

Code:

try {
    Timber.d("Requesting MTU: $REQUESTED_MTU")
    peripheral.requestMtu(REQUESTED_MTU)
} catch (e: Exception) {
    e.printStackTrace()
}

Stack trace:

Requesting MTU: 512
configureMTU() - device: 7D:CC:76:A0:A5:A0 mtu: 512
onConfigureMTU() - Device=7D:CC:76:A0:A5:A0 mtu=512 status=0
com.juul.kable.OutOfOrderGattCallbackException: Unexpected response type OnMtuChanged received
at com.juul.kable.AndroidPeripheral.requestMtu(Peripheral.kt:374)
at com.juul.kable.AndroidPeripheral$requestMtu$1.invokeSuspend(Unknown Source:12)
at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)

[twyatt]

Thanks for reporting. Was an oversight in the requestMtu implementation.

Can you try the following and let me know if it fixes the issue?

import java.net.URI

repositories {
    maven { url = URI("https://oss.sonatype.org/content/repositories/snapshots") }
}

dependencies {
    implementation("com.juul.kable:core:0.4.0-issue-82-SNAPSHOT")
}

Thanks!

---

SNAPSHOT published from #83.

[doudasek]

Thank you, it is working. Do you have an estimation for the 0.5.0 release?

[twyatt]

Fixed in 0.4.1.