"read failed, socket might closed or timeout, read ret: -1"

[omaraflak]

"read failed, socket might closed or timeout, read ret: -1"

[arnleal09]

This library no support ble devices, to make a connection to ble devices you need implement you our funtions, go to android documentation to do so. This library is still usefull to search devices and control bluetooth on you phone. El mié., 6 jun. 2018 2:22 a. m., Amirhgh74 <[email protected]> escribió:

…

did anyone find the solution for this issue ? I'm having this error too I'm using the library now @basel93natour <https://github.com/basel93natour> @arnleal09 <https://github.com/arnleal09> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#17 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AZMKuK5964SQhZIo7S4hji2j0JOSjBVeks5t53UxgaJpZM4SnKmV> .

[badarshahzad]

Hi have you implement communication callbacks? If yes did you first paired the device before connection? If yes then share the snippet code you are facing error to let us help you. Moreover, please don't forget to share your logcat error. It help us to understand quickly.

[arnleal09]

Hi, thanks for your reply, yes the callbacks are implemented and they work in fact the message "read failed, socket might closed or timeout, read ret: -1" its coming from @OverRide public void onConnectError(BluetoothDevice device, String message), this is the code:

package com.example.aleal.app_bt_1;

import android.Manifest;
import android.bluetooth.BluetoothDevice;
import android.content.Context;
import android.content.Intent;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;
import java.util.UUID;

import me.aflak.bluetooth.Bluetooth;
import me.aflak.bluetooth.BluetoothCallback;
import me.aflak.bluetooth.DeviceCallback;
import me.aflak.bluetooth.DiscoveryCallback;

import static java.security.AccessController.getContext;

public class MainActivity extends AppCompatActivity {

Bluetooth bluetooth = new Bluetooth(this);
private ListView lv;
ArrayList<String> devices_list = new ArrayList<>();
String name;
BluetoothDevice device_dongle;
String mensaje;
int MY_PERMISSIONS_REQUEST_ACCESS_COARSE_LOCATION=1;

@Override
protected void onStart() {
    super.onStart();
    bluetooth.onStart();
}

@Override
protected void onStop() {
    super.onStop();
    bluetooth.onStop();
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ListView lv1 = (ListView)findViewById(R.id.element_list);
    bluetooth.setBluetoothCallback(new BluetoothCallback() {
        @Override
        public void onBluetoothTurningOn() {


        }

        @Override
        public void onBluetoothOn() {

        }

        @Override
        public void onBluetoothTurningOff() {


        }

        @Override
        public void onBluetoothOff() {

        }

        @Override
        public void onUserDeniedActivation() {
            bluetooth.showEnableDialog(MainActivity.this);
            bluetooth.onActivityResult(1,1);
            // when using bluetooth.showEnableDialog()
            // you will also have to call bluetooth.onActivityResult()
        }
    });

    bluetooth.setDiscoveryCallback(new DiscoveryCallback() {

        @Override
        public void onDiscoveryStarted() {
            // scan finished

        }

        @Override
        public void onDiscoveryFinished() {
            // scan finished

        }

        @Override
        public void onDeviceFound(BluetoothDevice device) {
            // device found
            lv = (ListView) findViewById(R.id.element_list);
            devices_list.add(device.getName() + "\n" + device.getAddress());
            ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_list_item_1,devices_list);
            lv.setAdapter(arrayAdapter);
            name= device.getName().toString();
            if(name.equals("BLE-SPP"))
            {
                device_dongle=device;
            }

        }

        @Override
        public void onDevicePaired(BluetoothDevice device) {
            // device paired
            device_dongle=device;
        }

        @Override
        public void onDeviceUnpaired(BluetoothDevice device) {
            // device unpaired
        }

        @Override
        public void onError(String message) {
            // error occurred
        }
    });

    bluetooth.setDeviceCallback(new DeviceCallback() {
        @Override public void onDeviceConnected(BluetoothDevice device)
        {
            device_dongle=device;
        }
        @Override public void onDeviceDisconnected(BluetoothDevice device, String message)
        {


        }
        @Override public void onMessage(String message)
        {

        }
        @Override public void onError(String message)
        {

            mensaje=message;

        }
        @Override public void onConnectError(BluetoothDevice device, String message)
        {

            device_dongle=device;
        }
    });

  lv1.setOnItemClickListener(new AdapterView.OnItemClickListener()
    {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                                int position, long id) {
            if(bluetooth.isEnabled())
            {
                if (!bluetooth.isConnected())
                {
                    bluetooth.stopScanning();
                    name = ((TextView) view).getText().toString();
                    CharSequence dev = name;
                    int endIndex = name.lastIndexOf("\n");
                    bluetooth.pair(device_dongle);
                }
            }
        }
    });

}

public void eneable_BT(View view) {
    // Do something in response to button click
    if(!bluetooth.isEnabled())
        bluetooth.enable();
    else {
    //    Toast.makeText(this, "EL Bluetooth ya esta encendido!",
    //            Toast.LENGTH_LONG).show();
    }
}

public void find_list(View view) {
    // Do something in response to button click
    if(bluetooth.isEnabled())
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
            MY_PERMISSIONS_REQUEST_ACCESS_COARSE_LOCATION);
        bluetooth.startScanning();
}

public void disconnect(View view) {
    // Do something in response to button click
    if(bluetooth.isEnabled())
        bluetooth.disable();
    else {
     //   Toast.makeText(this, "EL Bluetooth ya esta deshabilitado!",
     //           Toast.LENGTH_LONG).show();
    }
}

public void open_drawer_1(View view) {
    // Do something in response to button click
    if (!bluetooth.isConnected())
    {
        bluetooth.connectToDevice(device_dongle);
    //    bluetooth.send("A");
    }
}

public void open_drawer_2(View view) {
    // Do something in response to button click
    if (!bluetooth.isConnected())
    {
        bluetooth.connectToDevice(device_dongle);
     //   bluetooth.send("B");
    }
}

}

this is the logcat

03-13 08:47:54.853 20238-20238/com.example.aleal.app_bt_1 D/ViewRootImpl: ViewPostImeInputStage processPointer 0
03-13 08:47:54.913 20238-20238/com.example.aleal.app_bt_1 D/ViewRootImpl: ViewPostImeInputStage processPointer 1
03-13 08:47:54.983 20238-20238/com.example.aleal.app_bt_1 D/BluetoothAdapter: cancelDiscovery
03-13 08:47:54.983 20238-20238/com.example.aleal.app_bt_1 D/BluetoothAdapter: cancelDiscovery = true
03-13 08:47:55.003 20238-20238/com.example.aleal.app_bt_1 D/BLE: PAIR RECEIVER
03-13 08:47:55.913 20238-20238/com.example.aleal.app_bt_1 D/BLE: PAIR RECEIVER
03-13 08:48:05.763 20238-20238/com.example.aleal.app_bt_1 D/ViewRootImpl: ViewPostImeInputStage processPointer 0
03-13 08:48:05.843 20238-20238/com.example.aleal.app_bt_1 D/ViewRootImpl: ViewPostImeInputStage processPointer 1
03-13 08:48:05.913 20238-20308/com.example.aleal.app_bt_1 D/BluetoothAdapter: cancelDiscovery
03-13 08:48:05.923 20238-20308/com.example.aleal.app_bt_1 D/BluetoothAdapter: cancelDiscovery = true
03-13 08:48:05.923 20238-20308/com.example.aleal.app_bt_1 D/BluetoothUtils: isSocketAllowedBySecurityPolicy start : device null
03-13 08:48:05.923 20238-20308/com.example.aleal.app_bt_1 D/BluetoothSocket: connect(): myUserId = 0
03-13 08:48:05.923 20238-20308/com.example.aleal.app_bt_1 W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback

[basel93natour]

i have the same problem please if you come a cross any solution please post it here

[Amirhgh74]

did anyone find the solution for this issue ? I'm having this error too I'm using the library now @basel93natour @arnleal09

@omaraflak Is there any version of this library which solves this issue?
OnconnectError: "read failed, socket might closed or timeout, read ret: -1"

[omaraflak]

@proazfar @badarshahzad @basel93natour @Amirhgh74 All my apologies for the very late response. As said @arnleal09, this library does not support BLE devices. If time allows it, I will try to implement BLE.
Meanwhile, you can check the Android Documentation :

https://developer.android.com/guide/topics/connectivity/bluetooth-le

Thank you all for the interest you give to this repository.

[amon-shadow]

By adding filter action my problem resolved

 // Register for broadcasts when a device is discovered
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
    intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
    intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
    registerReceiver(mReceiver, intentFilter);

[umamakhalid]

If you have tried connecting devices once or more then your socket might be already connected. try restarting devices.