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BlueCon - Android BT SPP Server & Client Library

License: Apache License 2.0

Java 100.00%

bluecon's Introduction

Hi there 👋

About Me

I am an application developer as known as a "Generalist" at small start-up in Seoul. I was jumped in to start-up swamp since 2014. My work experiences; Native Frameworks (Android SDK and iOS SDK)/Flutter for make Mobile/Desktop/Web application, Flask/Spring boot/Ktor for make Server-side application, Python scripting for various messy automation jobs and various chip-specific frameworks like STM32Cube, ESP-IDF, etc. for make embedded application firmware.

Also, I have many hobbies for my life; such as Military, Amateur Radio, playing base and more.

My experiences

TBD.

bluecon's People

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beiliubei tsdogs dongsheqin

bluecon's Issues

onBluetoothDeviceDisconnected Callback don't work

Hi.
I try the SPPServerActivity for a SPP Server Mode.
This works fine... The PC open the SPP port, and I can send and receive messages in App.
The problem is when el Client close the connection.
A Exception occurs on SPPServerController, and I don't receive "onBluetoothDeviceDisconnected" Callback, to bind a new connection.

 java.io.IOException: bt socket closed, read return: -1
        at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:558)
        at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:88)
        at java.io.InputStream.read(InputStream.java:101)
        at me.kudryavka.bluecon.SPPServer.SPPServerController$CommunicationThread$ReadThread.run(SPPServerController.java:423)

The Exception is generate here. In SPPServerController.java, when try to read a closed socket.

  @Override
            public void run() {
                byte[] data = new byte[buffSize];
                int len;

                while (true) {
                    try {
                        len = inputStream.read(data);
                        byte[] read = new byte[len];
                        System.arraycopy(data, 0, read, 0, len);
                        for (SPPListener sppListener : sppListeners) {
                            sppListener.onPacketReceived(socket.getRemoteDevice().getAddress(), read);
                        }
                    } catch (IOException e) {
                        Log.e(TAG, "CONNECTION CLOSED BY PEER", e);
                        disconnected(socket, this);
                        break;
                    }
                }
            }

Client Instance crashes app

Server instance works great, but If I use a client instance the app tries to connect a couple of times to the client, but then it crashes the app. (even if the device is not reachable)

This are the errors, and I also have no idea on why it's saying it's connected when this cannot be (device was off, but it's basically doing the same when device is on):

12-09 16:01:57.272 9504-9561/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:01:57.276 9504-9561/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:01:57.277 9504-9678/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:01:57.284 9504-9679/com.metalit.ondaweb E/SPPClientController: FAILED TO READ PACKET
                                                                        java.io.IOException: socket closed
                                                                            at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:104)
                                                                            at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                            at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                            at java.io.InputStream.read(InputStream.java:101)
                                                                            at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:01:57.284 9504-9679/com.metalit.ondaweb D/SPPClientController: RECONNECT TO : 00:1D:A5:68:98:8C
12-09 16:01:57.284 9504-9679/com.metalit.ondaweb D/OndaWEB: BT device disconnected: 00:1D:A5:68:98:8C
12-09 16:01:57.284 9504-9679/com.metalit.ondaweb D/SPPClientController: CONNECT TO : 00:1D:A5:68:98:8C
12-09 16:01:57.292 9504-9561/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:01:57.295 9504-9679/com.metalit.ondaweb D/OndaWEB: BT device connecting: 00:1D:A5:68:98:8C
12-09 16:01:57.296 9504-9680/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:02:02.539 9504-9678/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.539 9504-9680/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.541 9504-9678/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.546 9504-9678/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.546 9504-9759/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:02:02.548 9504-9760/com.metalit.ondaweb E/SPPClientController: FAILED TO READ PACKET
                                                                        java.io.IOException: socket closed
                                                                            at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:104)
                                                                            at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                            at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                            at java.io.InputStream.read(InputStream.java:101)
                                                                            at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:02:02.548 9504-9760/com.metalit.ondaweb D/SPPClientController: RECONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.549 9504-9760/com.metalit.ondaweb D/OndaWEB: BT device disconnected: 00:1D:A5:68:98:8C
12-09 16:02:02.549 9504-9760/com.metalit.ondaweb D/SPPClientController: CONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.549 9504-9680/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.552 9504-9759/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.552 9504-9761/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:02:02.554 9504-9762/com.metalit.ondaweb E/SPPClientController: FAILED TO READ PACKET
                                                                        java.io.IOException: socket closed
                                                                            at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:104)
                                                                            at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                            at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                            at java.io.InputStream.read(InputStream.java:101)
                                                                            at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:02:02.554 9504-9762/com.metalit.ondaweb D/SPPClientController: RECONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.555 9504-9762/com.metalit.ondaweb D/OndaWEB: BT device disconnected: 00:1D:A5:68:98:8C
12-09 16:02:02.555 9504-9762/com.metalit.ondaweb D/SPPClientController: CONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.558 9504-9761/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.561 9504-9680/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.564 9504-9759/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.569 9504-9759/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.569 9504-9763/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.572 9504-9762/com.metalit.ondaweb D/OndaWEB: BT device connecting: 00:1D:A5:68:98:8C
12-09 16:02:02.573 9504-9760/com.metalit.ondaweb D/OndaWEB: BT device connecting: 00:1D:A5:68:98:8C
12-09 16:02:02.574 9504-9764/com.metalit.ondaweb E/SPPClientController: FAILED TO READ PACKET
                                                                        java.io.IOException: socket closed
                                                                            at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:104)
                                                                            at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                            at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                            at java.io.InputStream.read(InputStream.java:101)
                                                                            at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:02:02.575 9504-9764/com.metalit.ondaweb D/SPPClientController: RECONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.575 9504-9764/com.metalit.ondaweb D/OndaWEB: BT device disconnected: 00:1D:A5:68:98:8C
12-09 16:02:02.575 9504-9764/com.metalit.ondaweb D/SPPClientController: CONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.577 9504-9765/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:02:02.580 9504-9766/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.581 9504-9767/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.581 9504-9763/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.584 9504-9765/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.589 9504-9763/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.589 9504-9761/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.589 9504-9768/com.metalit.ondaweb W/BluetoothAdapter: getBluetoothService() called with no BluetoothManagerCallback
12-09 16:02:02.594 9504-9761/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.598 9504-9767/com.metalit.ondaweb D/SPPClientController: CONNECTED : 00:1D:A5:68:98:8C
12-09 16:02:02.598 9504-9768/com.metalit.ondaweb E/SPPClientController: Failed to connect to SOCKET. retrying...
12-09 16:02:02.600 9504-9770/com.metalit.ondaweb E/SPPClientController: FAILED TO READ PACKET
                                                                        java.io.IOException: socket closed
                                                                            at android.net.LocalSocketImpl$SocketInputStream.read(LocalSocketImpl.java:104)
                                                                            at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                            at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                            at java.io.InputStream.read(InputStream.java:101)
                                                                            at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:02:02.600 9504-9769/com.metalit.ondaweb E/AndroidRuntime: FATAL EXCEPTION: Thread-20
                                                                   Process: com.metalit.ondaweb, PID: 9504
                                                                   java.lang.NullPointerException: Attempt to invoke virtual method 'int java.io.InputStream.read(byte[], int, int)' on a null object reference
                                                                       at android.bluetooth.BluetoothSocket.read(BluetoothSocket.java:571)
                                                                       at android.bluetooth.BluetoothInputStream.read(BluetoothInputStream.java:96)
                                                                       at java.io.InputStream.read(InputStream.java:101)
                                                                       at me.kudryavka.bluecon.SPPClient.SPPClientController$CommunicationThread.run(SPPClientController.java:336)
12-09 16:02:02.600 9504-9770/com.metalit.ondaweb D/SPPClientController: RECONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.600 9504-9770/com.metalit.ondaweb D/OndaWEB: BT device disconnected: 00:1D:A5:68:98:8C
12-09 16:02:02.600 9504-9770/com.metalit.ondaweb D/SPPClientController: CONNECT TO : 00:1D:A5:68:98:8C
12-09 16:02:02.603 9504-9767/com.metalit.ondaweb D/OndaWEB: BT Connected: 00:1D:A5:68:98:8C : OBDII
12-09 16:02:02.605 9504-9772/com.metalit.ondaweb I/Process: Sending signal. PID: 9504 SIG: 9

manifest on bintray still reports version 0.1 as latest

As from the title, the maven-metadata.xml still reports latest version 0.1 so setting it to 0.2 or 0.2.1 in gradle would not resolve the library

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