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T8b949e/*

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

* GNU General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with this program. If not, see <https://www.gnu.org/licenses/>.

*/

Tff7b72package T7ee787org.meshtastic.core.network

Tff7b72import T7ee787co.touchlab.kermit.Logger

Tff7b72import T7ee787com.fazecast.jSerialComm.SerialPort

Tff7b72import T7ee787com.fazecast.jSerialComm.SerialPortTimeoutException

Tff7b72import T7ee787kotlinx.coroutines.Job

Tff7b72import T7ee787kotlinx.coroutines.isActive

Tff7b72import T7ee787kotlinx.coroutines.launch

Tff7b72import T7ee787org.meshtastic.core.di.CoroutineDispatchers

Tff7b72import T7ee787org.meshtastic.core.network.radio.StreamInterface

Tff7b72import T7ee787org.meshtastic.core.repository.RadioInterfaceService

Tff7b72import T7ee787org.meshtastic.proto.Heartbeat

Tff7b72import T7ee787org.meshtastic.proto.ToRadio

Tff7b72import T7ee787java.io.File

T8b949e/**

* JVM-specific implementation of [RadioTransport] using jSerialComm. Uses [StreamInterface] for START1/START2 packet

* framing.

*

* Use the [open] factory method instead of the constructor directly to ensure the serial port is opened and the read

* loop is started.

*/

Tff7b72class T56d364SerialTransport

Te6edf3private Tff7b72constructorTb4b4b4(

Tff7b72private Tff7b72val Te6edf3portNameTb4b4b4: Tffa657StringTb4b4b4,

Tff7b72private Tff7b72val Te6edf3baudRateTb4b4b4: Tffa657Int Tff7b72= Te6edf3DEFAULT_BAUD_RATETb4b4b4,

Te6edf3serviceTb4b4b4: Te6edf3RadioInterfaceServiceTb4b4b4,

Tff7b72private Tff7b72val Te6edf3dispatchersTb4b4b4: Te6edf3CoroutineDispatchersTb4b4b4,

Tb4b4b4) Tb4b4b4: Te6edf3StreamInterfaceTb4b4b4(Te6edf3serviceTb4b4b4) Tb4b4b4{

Tff7b72private Tff7b72var Te6edf3serialPortTb4b4b4: Te6edf3SerialPort? Tff7b72= Tff7b72null

Tff7b72private Tff7b72var Te6edf3readJobTb4b4b4: Te6edf3Job? Tff7b72= Tff7b72null

T8b949e/** Attempts to open the serial port and starts the read loop. Returns true if successful, false otherwise. */

Tff7b72private Tff7b72fun Td2a8ffstartConnectionTb4b4b4(Tb4b4b4)Tb4b4b4: Tffa657Boolean Tb4b4b4{

Tff7b72return Tff7b72try Tb4b4b4{

Tff7b72val Te6edf3port Tff7b72= Te6edf3SerialPortTb4b4b4.Te6edf3getCommPortTb4b4b4(Te6edf3portNameTb4b4b4) Tff7b72?: Tff7b72return Tff7b72false

Te6edf3portTb4b4b4.Te6edf3setComPortParametersTb4b4b4(Te6edf3baudRateTb4b4b4, Te6edf3DATA_BITSTb4b4b4, Te6edf3SerialPortTb4b4b4.Te6edf3ONE_STOP_BITTb4b4b4, Te6edf3SerialPortTb4b4b4.Te6edf3NO_PARITYTb4b4b4)

Te6edf3portTb4b4b4.Te6edf3setComPortTimeoutsTb4b4b4(Te6edf3SerialPortTb4b4b4.Te6edf3TIMEOUT_READ_SEMI_BLOCKINGTb4b4b4, Te6edf3READ_TIMEOUT_MSTb4b4b4, T79c0ff0Tb4b4b4)

Tff7b72if Tb4b4b4(Te6edf3portTb4b4b4.Te6edf3openPortTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Te6edf3serialPort Tff7b72= Te6edf3port

Te6edf3portTb4b4b4.Te6edf3setDTRTb4b4b4(Tb4b4b4)

Te6edf3portTb4b4b4.Te6edf3setRTSTb4b4b4(Tb4b4b4)

Te6edf3LoggerTb4b4b4.Te6edf3i Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial port opened (baud=Tffd700$Te6edf3baudRateTa5d6ff)Ta5d6ff" Tb4b4b4}

Tff7b72superTb4b4b4.Te6edf3connectTb4b4b4(Tb4b4b4) T8b949e// Sends WAKE_BYTES and signals service.onConnect()

Te6edf3startReadLoopTb4b4b4(Te6edf3portTb4b4b4)

Tff7b72true

Tb4b4b4} Tff7b72else Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3w Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial port openPort() returned falseTa5d6ff" Tb4b4b4}

Tff7b72false

Tb4b4b4}

Tb4b4b4} Tff7b72catch Tb4b4b4(Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffTooGenericExceptionCaughtTa5d6ff"Tb4b4b4) Te6edf3eTb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3wTb4b4b4(Te6edf3eTb4b4b4) Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial connection failedTa5d6ff" Tb4b4b4}

Tff7b72false

Tb4b4b4}

Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffCyclomaticComplexMethodTa5d6ff"Tb4b4b4)

Tff7b72private Tff7b72fun Td2a8ffstartReadLoopTb4b4b4(Te6edf3portTb4b4b4: Te6edf3SerialPortTb4b4b4) Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Starting serial read loopTa5d6ff" Tb4b4b4}

Te6edf3readJob Tff7b72=

Te6edf3serviceTb4b4b4.Te6edf3serviceScopeTb4b4b4.Te6edf3launchTb4b4b4(Te6edf3dispatchersTb4b4b4.Te6edf3ioTb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3input Tff7b72= Te6edf3portTb4b4b4.Te6edf3inputStream

Tff7b72val Te6edf3buffer Tff7b72= Te6edf3ByteArrayTb4b4b4(Te6edf3READ_BUFFER_SIZETb4b4b4)

Tff7b72try Tb4b4b4{

Tff7b72var Te6edf3reading Tff7b72= Tff7b72true

Tff7b72while Tb4b4b4(Te6edf3isActive Tff7b72&Tff7b72& Te6edf3portTb4b4b4.Te6edf3isOpen Tff7b72&Tff7b72& Te6edf3readingTb4b4b4) Tb4b4b4{

Tff7b72try Tb4b4b4{

Tff7b72val Te6edf3numRead Tff7b72= Te6edf3inputTb4b4b4.Te6edf3readTb4b4b4(Te6edf3bufferTb4b4b4)

Tff7b72if Tb4b4b4(Te6edf3numRead Tff7b72=Tff7b72= Tff7b72-T79c0ff1Tb4b4b4) Tb4b4b4{

Te6edf3reading Tff7b72= Tff7b72false

Tb4b4b4} Tff7b72else Tff7b72if Tb4b4b4(Te6edf3numRead Tff7b72> T79c0ff0Tb4b4b4) Tb4b4b4{

Tff7b72for Tb4b4b4(Te6edf3i Tff7b72in T79c0ff0 Te6edf3until Te6edf3numReadTb4b4b4) Tb4b4b4{

Te6edf3readCharTb4b4b4(Te6edf3bufferTff7b72[Te6edf3iTff7b72]Tb4b4b4)

Tb4b4b4}

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3_Tb4b4b4: Te6edf3SerialPortTimeoutExceptionTb4b4b4) Tb4b4b4{

T8b949e// Expected timeout when no data is available

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3eTb4b4b4: Te6edf3kotlinxTb4b4b4.Te6edf3coroutinesTb4b4b4.Te6edf3CancellationExceptionTb4b4b4) Tb4b4b4{

Tff7b72throw Te6edf3e

Tb4b4b4} Tff7b72catch Tb4b4b4(Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffTooGenericExceptionCaughtTa5d6ff"Tb4b4b4) Te6edf3eTb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3isActiveTb4b4b4) Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3wTb4b4b4(Te6edf3eTb4b4b4) Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial read errorTa5d6ff" Tb4b4b4}

Tb4b4b4} Tff7b72else Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial read interrupted by cancellationTa5d6ff" Tb4b4b4}

Tb4b4b4}

Te6edf3reading Tff7b72= Tff7b72false

Tb4b4b4}

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3eTb4b4b4: Te6edf3kotlinxTb4b4b4.Te6edf3coroutinesTb4b4b4.Te6edf3CancellationExceptionTb4b4b4) Tb4b4b4{

Tff7b72throw Te6edf3e

Tb4b4b4} Tff7b72catch Tb4b4b4(Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffTooGenericExceptionCaughtTa5d6ff"Tb4b4b4) Te6edf3eTb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3isActiveTb4b4b4) Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3wTb4b4b4(Te6edf3eTb4b4b4) Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial read loop outer errorTa5d6ff" Tb4b4b4}

Tb4b4b4} Tff7b72else Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial read loop interrupted by cancellationTa5d6ff" Tb4b4b4}

Tb4b4b4}

Tb4b4b4} Tff7b72finally Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial read loop exitingTa5d6ff" Tb4b4b4}

Tff7b72try Tb4b4b4{

Te6edf3inputTb4b4b4.Te6edf3closeTb4b4b4(Tb4b4b4)

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3_Tb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

T8b949e// Ignore errors during input stream close

Tb4b4b4}

Tff7b72try Tb4b4b4{

Tff7b72if Tb4b4b4(Te6edf3portTb4b4b4.Te6edf3isOpenTb4b4b4) Tb4b4b4{

Te6edf3portTb4b4b4.Te6edf3closePortTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3_Tb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

T8b949e// Ignore errors during port close

Tb4b4b4}

Tff7b72if Tb4b4b4(Te6edf3isActiveTb4b4b4) Tb4b4b4{

Te6edf3onDeviceDisconnectTb4b4b4(Tff7b72trueTb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffsendBytesTb4b4b4(Te6edf3pTb4b4b4: Te6edf3ByteArrayTb4b4b4) Tb4b4b4{

Te6edf3serialPortTff7b72?.Te6edf3takeIf Tb4b4b4{ Tffa657itTb4b4b4.Te6edf3isOpen Tb4b4b4}Tff7b72?.Te6edf3outputStreamTff7b72?.Te6edf3writeTb4b4b4(Te6edf3pTb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffflushBytesTb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3serialPortTff7b72?.Te6edf3takeIf Tb4b4b4{ Tffa657itTb4b4b4.Te6edf3isOpen Tb4b4b4}Tff7b72?.Te6edf3outputStreamTff7b72?.Te6edf3flushTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffkeepAliveTb4b4b4(Tb4b4b4) Tb4b4b4{

T8b949e// Send a ToRadio heartbeat so the firmware resets its idle timer and responds with

T8b949e// a FromRadio queueStatus — proving the serial link is alive. Without this, the

T8b949e// serial transport has no way to detect a silently dead device.

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial keepAlive — sending heartbeatTa5d6ff" Tb4b4b4}

Te6edf3handleSendToRadioTb4b4b4(Te6edf3ToRadioTb4b4b4(Te6edf3heartbeat Tff7b72= Te6edf3HeartbeatTb4b4b4(Tb4b4b4)Tb4b4b4)Tb4b4b4.Te6edf3encodeTb4b4b4(Tb4b4b4)Tb4b4b4)

Tb4b4b4}

Tff7b72private Tff7b72fun Td2a8ffclosePortResourcesTb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3serialPortTff7b72?.Te6edf3takeIf Tb4b4b4{ Tffa657itTb4b4b4.Te6edf3isOpen Tb4b4b4}Tff7b72?.Te6edf3closePortTb4b4b4(Tb4b4b4)

Te6edf3serialPort Tff7b72= Tff7b72null

Tb4b4b4}

Tff7b72override Tff7b72fun Td2a8ffcloseTb4b4b4(Tb4b4b4) Tb4b4b4{

Te6edf3LoggerTb4b4b4.Te6edf3d Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Closing serial transportTa5d6ff" Tb4b4b4}

Te6edf3readJobTff7b72?.Te6edf3cancelTb4b4b4(Tb4b4b4)

Te6edf3readJob Tff7b72= Tff7b72null

Te6edf3closePortResourcesTb4b4b4(Tb4b4b4)

Tff7b72superTb4b4b4.Te6edf3closeTb4b4b4(Tb4b4b4)

Tb4b4b4}

Tff7b72companion Tff7b72object Tb4b4b4{

Tff7b72private Tff7b72const Tff7b72val Te6edf3DEFAULT_BAUD_RATE Tff7b72= T79c0ff1T79c0ff1T79c0ff5T79c0ff2T79c0ff0T79c0ff0

Tff7b72private Tff7b72const Tff7b72val Te6edf3DATA_BITS Tff7b72= T79c0ff8

Tff7b72private Tff7b72const Tff7b72val Te6edf3READ_BUFFER_SIZE Tff7b72= T79c0ff1T79c0ff0T79c0ff2T79c0ff4

Tff7b72private Tff7b72const Tff7b72val Te6edf3READ_TIMEOUT_MS Tff7b72= T79c0ff1T79c0ff0T79c0ff0

T8b949e/**

* Creates and opens a [SerialTransport]. If the port cannot be opened, the transport signals a permanent

* disconnect to the [service] and returns the (non-connected) instance.

*/

Tff7b72fun Td2a8ffopenTb4b4b4(

Te6edf3portNameTb4b4b4: Tffa657StringTb4b4b4,

Te6edf3baudRateTb4b4b4: Tffa657Int Tff7b72= Te6edf3DEFAULT_BAUD_RATETb4b4b4,

Te6edf3serviceTb4b4b4: Te6edf3RadioInterfaceServiceTb4b4b4,

Te6edf3dispatchersTb4b4b4: Te6edf3CoroutineDispatchersTb4b4b4,

Tb4b4b4)Tb4b4b4: Te6edf3SerialTransport Tb4b4b4{

Tff7b72val Te6edf3transport Tff7b72= Te6edf3SerialTransportTb4b4b4(Te6edf3portNameTb4b4b4, Te6edf3baudRateTb4b4b4, Te6edf3serviceTb4b4b4, Te6edf3dispatchersTb4b4b4)

Tff7b72if Tb4b4b4(Tff7b72!Te6edf3transportTb4b4b4.Te6edf3startConnectionTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3errorMessage Tff7b72= Te6edf3diagnoseOpenFailureTb4b4b4(Te6edf3portNameTb4b4b4)

Te6edf3LoggerTb4b4b4.Te6edf3w Tb4b4b4{ Ta5d6ff"Ta5d6ff[Tffd700$Te6edf3portNameTa5d6ff] Serial port could not be opened; signalling disconnect. Tffd700$Te6edf3errorMessageTa5d6ff" Tb4b4b4}

Te6edf3serviceTb4b4b4.Te6edf3onDisconnectTb4b4b4(Te6edf3isPermanent Tff7b72= Tff7b72trueTb4b4b4, Te6edf3errorMessage Tff7b72= Te6edf3errorMessageTb4b4b4)

Tb4b4b4}

Tff7b72return Te6edf3transport

Tb4b4b4}

T8b949e/**

* Discovers and returns a list of available serial ports. Returns a list of the system port names (e.g.,

* "COM3", "/dev/ttyUSB0").

*/

Tff7b72fun Td2a8ffgetAvailablePortsTb4b4b4(Tb4b4b4)Tb4b4b4: Te6edf3ListTff7b72<Tffa657StringTff7b72> Tff7b72= Te6edf3SerialPortTb4b4b4.Te6edf3getCommPortsTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3map Tb4b4b4{ Tffa657itTb4b4b4.Te6edf3systemPortName Tb4b4b4}

T8b949e/**

* Diagnoses why a serial port could not be opened and returns a user-facing error message. On Linux, checks

* file permissions and suggests the appropriate group fix.

*/

Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffReturnCountTa5d6ff"Tb4b4b4)

Tff7b72private Tff7b72fun Td2a8ffdiagnoseOpenFailureTb4b4b4(Te6edf3portNameTb4b4b4: Tffa657StringTb4b4b4)Tb4b4b4: Tffa657String Tb4b4b4{

Tff7b72val Te6edf3osName Tff7b72= Te6edf3SystemTb4b4b4.Te6edf3getPropertyTb4b4b4(Ta5d6ff"Ta5d6ffos.nameTa5d6ff"Tb4b4b4, Ta5d6ff"Ta5d6ff"Tb4b4b4)Tb4b4b4.Te6edf3lowercaseTb4b4b4(Tb4b4b4)

Tff7b72if Tb4b4b4(Tff7b72!Te6edf3osNameTb4b4b4.Te6edf3containsTb4b4b4(Ta5d6ff"Ta5d6fflinuxTa5d6ff"Tb4b4b4)Tb4b4b4) Tb4b4b4{

Tff7b72return Ta5d6ff"Ta5d6ffCould not open serial port: Tffd700$Te6edf3portNameTa5d6ff"

Tb4b4b4}

T8b949e// jSerialComm resolves bare names like "ttyUSB0" to "/dev/ttyUSB0"

Tff7b72val Te6edf3devPath Tff7b72= Tff7b72if Tb4b4b4(Te6edf3portNameTb4b4b4.Te6edf3startsWithTb4b4b4(Ta5d6ff"Ta5d6ff/Ta5d6ff"Tb4b4b4)Tb4b4b4) Te6edf3portName Tff7b72else Ta5d6ff"Ta5d6ff/dev/Tffd700$Te6edf3portNameTa5d6ff"

Tff7b72val Te6edf3portFile Tff7b72= Te6edf3FileTb4b4b4(Te6edf3devPathTb4b4b4)

Tff7b72if Tb4b4b4(Tff7b72!Te6edf3portFileTb4b4b4.Te6edf3existsTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Tff7b72return Ta5d6ff"Ta5d6ffSerial port Tffd700$Te6edf3portNameTa5d6ff not found. Is the device still connected?Ta5d6ff"

Tb4b4b4}

Tff7b72if Tb4b4b4(Tff7b72!Te6edf3portFileTb4b4b4.Te6edf3canReadTb4b4b4(Tb4b4b4) Tff7b72|Tff7b72| Tff7b72!Te6edf3portFileTb4b4b4.Te6edf3canWriteTb4b4b4(Tb4b4b4)Tb4b4b4) Tb4b4b4{

Tff7b72val Te6edf3group Tff7b72= Te6edf3detectSerialGroupTb4b4b4(Te6edf3devPathTb4b4b4)

Tff7b72val Te6edf3user Tff7b72= Te6edf3SystemTb4b4b4.Te6edf3getPropertyTb4b4b4(Ta5d6ff"Ta5d6ffuser.nameTa5d6ff"Tb4b4b4, Ta5d6ff"Ta5d6ffyour_userTa5d6ff"Tb4b4b4)

Tff7b72return Ta5d6ff"Ta5d6ffPermission denied for Tffd700$Te6edf3devPathTa5d6ff. Ta5d6ff" Tff7b72+

Ta5d6ff"Ta5d6ffRun: sudo usermod -aG Tffd700$Te6edf3groupTa5d6ff Tffd700$Te6edf3userTa5d6ff — then log out and back in.Ta5d6ff"

Tb4b4b4}

Tff7b72return Ta5d6ff"Ta5d6ffCould not open serial port: Tffd700$Te6edf3portNameTa5d6ff"

Tb4b4b4}

T8b949e/**

* Attempts to detect the group that owns the serial device file. Falls back to "dialout" (Debian/Ubuntu

* default) if detection fails.

*/

Tf0883e@SuppressTb4b4b4(Ta5d6ff"Ta5d6ffSwallowedExceptionTa5d6ff"Tb4b4b4, Ta5d6ff"Ta5d6ffTooGenericExceptionCaughtTa5d6ff"Tb4b4b4)

Tff7b72private Tff7b72fun Td2a8ffdetectSerialGroupTb4b4b4(Te6edf3devPathTb4b4b4: Tffa657StringTb4b4b4)Tb4b4b4: Tffa657String Tff7b72= Tff7b72try Tb4b4b4{

Tff7b72val Te6edf3process Tff7b72= Te6edf3ProcessBuilderTb4b4b4(Ta5d6ff"Ta5d6ffstatTa5d6ff"Tb4b4b4, Ta5d6ff"Ta5d6ff-cTa5d6ff"Tb4b4b4, Ta5d6ff"Ta5d6ff%GTa5d6ff"Tb4b4b4, Te6edf3devPathTb4b4b4)Tb4b4b4.Te6edf3redirectErrorStreamTb4b4b4(Tff7b72trueTb4b4b4)Tb4b4b4.Te6edf3startTb4b4b4(Tb4b4b4)

Tff7b72val Te6edf3group Tff7b72= Te6edf3processTb4b4b4.Te6edf3inputStreamTb4b4b4.Te6edf3bufferedReaderTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3readTextTb4b4b4(Tb4b4b4)Tb4b4b4.Te6edf3trimTb4b4b4(Tb4b4b4)

Te6edf3processTb4b4b4.Te6edf3waitForTb4b4b4(Tb4b4b4)

Te6edf3groupTb4b4b4.Te6edf3ifEmpty Tb4b4b4{ Ta5d6ff"Ta5d6ffdialoutTa5d6ff" Tb4b4b4}

Tb4b4b4} Tff7b72catch Tb4b4b4(Te6edf3eTb4b4b4: Te6edf3ExceptionTb4b4b4) Tb4b4b4{

Ta5d6ff"Ta5d6ffdialoutTa5d6ff"

Tb4b4b4}