Android - Peripheral Connect Error #395
Description
Hi,
I'm using a Tauri Plugin (v2/beta) to handle Bluetooth operations. I can successfully request Bluetooth permissions and scan for devices. However, the application crashes when I try to connect to a device.
Tauri connect Command:
#[tauri::command]
pub(crate) async fn connect<R: Runtime>(
_app: AppHandle<R>,
_printer_store: State<'_, Arc<Mutex<PrinterStore>>>,
time: u64,
device: Device,
) -> Result<()> {
let printer_store = Arc::clone(&_printer_store);
let conn = device.conn;
info!("Connecting to device: {:?}", device);
match conn {
ConnectionType::BLE => {
#[cfg(feature = "ble")]
{
#[cfg(target_os = "android")]
{
_app.escpos()
.btleplug_context_spawn(async move {
let mut printer_store_android = printer_store.lock().await;
let adapter = FinderBLE::get_adapter()
.await
.map_err(|_| Error::BLEAdapterNotFound)?;
let scanned_devices =
FinderBLE::scan(&adapter, vec![], Duration::from_secs(time as u64))
.await
.map_err(|_| Error::BLEScan)?;
if let Some(device_found) = scanned_devices
.into_iter()
.find(|d| d.address().to_string() == device.address)
{
info!("Connecting to device: {:?}", device_found);
let device_peripheral = FinderBLE::connect(device_found)
.await
.map_err(|_| Error::BLEConnect(device.address))?;
info!("Connected to device: {:?}", device_peripheral);
let mut printer = PrinterESCPOSBLE::new(device_peripheral)
.await
.map_err(|_| Error::BLEPrinterInstance)?;
info!("Printer instance created");
printer_store_android.printer = Printer::BLE(printer);
printer_store_android.connected = true;
}
Ok::<(), Error>(())
})
.await
.map_err(|_err| Error::BLEbtleplugContextSpawn(_err.to_string()))?;
}
}
#[cfg(not(feature = "ble"))]
{
return Err(Error::BLEFeatureNotEnabled);
}
}
ConnectionType::USB => {
#[cfg(feature = "usb")]
{
todo!()
}
#[cfg(not(feature = "usb"))]
{
return Err(Error::USBFeatureNotEnabled);
}
}
}
Ok(())
}Connect fn (Wrapped on FinderBLE) -> FinderBLE::connect(peripheral).await
pub async fn connect(
peripheral: btleplug::platform::Peripheral,
) -> Result<btleplug::platform::Peripheral, Box<dyn Error>> {
log::info!(
"eco_print::FinderBLE::connect() -> start with peripheral: {:?}",
peripheral
);
let connected = peripheral.is_connected().await?;
log::info!(
"eco_print::FinderBLE::connect() -> is_connected: {:?}",
connected
);
if !connected {
log::info!(
"Connecting to {:?}",
peripheral.properties().await?.unwrap().local_name
);
peripheral.connect().await?;
}
Ok(peripheral)
}Logcat:
08-13 16:37:28.644 27245 27300 E GPUAUX : [AUX]GuiExtAuxCheckAuxPath:667: Null anb
08-13 16:37:28.645 27245 27300 E gralloc4: Empty SMPTE 2094-40 data
08-13 16:37:33.265 27245 27397 I TauriPluginEscpos: eco_print::escpos::finder::ble: eco_print::FinderBLE::scan() -> peripherals found: [JObject { internal: 0x390e, lifetime: PhantomData<&()> }, JObject { internal: 0x2b0a, lifetime: PhantomData<&()> }, JObject { internal: 0x4386, lifetime: PhantomData<&()> }, JObject { internal: 0x2e8a, lifetime: PhantomData<&()> }, JObject { internal: 0x352a, lifetime: PhantomData<&()> }, JObject { internal: 0x3552, lifetime: PhantomData<&()> }, JObject { internal: 0x38ea, lifetime: PhantomData<&()> }]
08-13 16:37:33.266 27245 27397 I TauriPluginEscpos: tauri_plugin_escpos::commands: Connecting to device: JObject { internal: 0x38ea, lifetime: PhantomData<&()> }
08-13 16:37:33.266 27245 27397 I TauriPluginEscpos: eco_print::escpos::finder::ble: eco_print::FinderBLE::connect() -> start with peripheral: JObject { internal: 0x38ea, lifetime: PhantomData<&()> }
08-13 16:37:33.271 27245 27397 I TauriPluginEscpos: eco_print::escpos::finder::ble: eco_print::FinderBLE::connect() -> is_connected: false
08-13 16:37:33.271 27245 27397 I TauriPluginEscpos: eco_print::escpos::finder::ble: Connecting to Some("KP-1020")
08-13 16:37:33.287 27245 27323 I RustStdoutStderr: thread 'TauriPluginEscpos-2' panicked at C:\Users\gabri\.cargo\registry\src\index.crates.io-6f17d22bba15001f\jni-utils-0.1.1\rust\future.rs:42:98:
08-13 16:37:33.287 27245 27323 I RustStdoutStderr: called `Option::unwrap()` on a `None` value
08-13 16:37:33.287 27245 27323 I RustStdoutStderr: note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
08-13 16:37:33.291 27245 27437 E TauriPluginEscpos: tauri_plugin_escpos::error: Error btleplug context spawn: task 31 panicked
08-13 16:37:33.308 27245 27245 W Tauri/Console: File: http://tauri.localhost/node_modules/.vite/deps/vue.js?v=75e191f8 - Line 1528 - Msg: [Vue warn]: Unhandled error during execution of native event handler
08-13 16:37:33.308 27245 27245 W Tauri/Console: at <App>
08-13 16:37:33.310 27245 27245 E Tauri/Console: File: http://tauri.localhost/ - Line 0 - Msg: Uncaught (in promise) Error btleplug context spawn: task 31 panicked
The crash seems to be related to this code segment where the panic occurs:
File: 08-13 16:37:33.287 27245 27323 I RustStdoutStderr: thread 'TauriPluginEscpos-2' panicked at C:\Users\gabri.cargo\registry\src\index.crates.io-6f17d22bba15001f\jni-utils-0.1.1\rust\future.rs:42:98:
pub fn from_env(env: &'b JNIEnv<'a>, obj: JObject<'a>) -> Result<Self> {
let poll = env.get_method_id(
JClass::from(crate::classcache::get_class("io/github/gedgygedgy/rust/future/Future").unwrap().as_obj()),
"poll",
"(Lio/github/gedgygedgy/rust/task/Waker;)Lio/github/gedgygedgy/rust/task/PollResult;",
)?;
Ok(Self {
internal: obj,
poll,
env,
})
}https://github.com/lnxdxtf/tauri-plugin-escpos
https://github.com/lnxdxtf/eco_print