我正在编写一个 C# 控制台应用程序，使用32feet.Net该库创建两个线程来搜索并连接到不同的蓝牙设备，然后打开 TCP 套接字，以便可以通过网络连接将数据传递到设备。我知道这种情况听起来很奇怪，但一位资深同事要求我这样做。
我的代码似乎在仅连接一台设备的情况下工作正常，尽管蓝牙连接有时会在来回传递几条消息后断开。但是，有时当第二个设备连接时，我会收到一条错误消息System.net.sockets.socketexception a connection attempt failed because the connected party did not properly respond，其他时候代码只是退出而不抛出任何异常。
我想知道是什么原因造成的，我发现32feet.Net库可以支持多个连接。我想知道我是否犯了一些错误，因为我是新手C#, .Net，甚至 Windows，并且以前从未编写过任何基于蓝牙的代码。
程序.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace BluetoothManager
{
class Program
{
static void Main(string[] args)
{
BTManager rover_btm = new BTManager();
BTManager base_btm = new BTManager();
base_btm.Port = 0xba5e;
rover_btm.Port = 17825;
base_btm.Name = "Base";
rover_btm.Name = "Rover";
base_btm.match = (args.Length >= 1 && args[0] != "") ? args[0] : "dev1";
rover_btm.match = (args.Length >= 2 && args[1] != "") ? args[1] : "dev2";
Console.WriteLine("Base Station match: " + base_btm.match);
Console.WriteLine("Rover match: " + rover_btm.match);
Thread Base = new Thread(new ThreadStart(base_btm.HandleThread));
Thread Rover = new Thread(new ThreadStart(rover_btm.HandleThread));
Base.Start();
Rover.Start();
Base.Join();
Rover.Join();
Console.Read();
}
}
}
BTManager.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using InTheHand.Net.Bluetooth;
using InTheHand.Net.Ports;
using InTheHand.Net.Sockets;
using System.Threading;
using System.Net;
using System.Net.Sockets;
using Microsoft.Win32;
using System.IO;
namespace BluetoothManager
{
class BTManager
{
private static BluetoothDeviceInfo[] peers;
private BluetoothClient client;
private bool _isConnected = false;
private string _match;
private const string defpin = "0000";
private TcpListener tcpListener;
private int _port;
private string _name = "Not Named";
public string Name
{
get { return _name; }
set { _name = value; }
}
public int Port
{
get { return _port; }
set { _port = value; }
}
public bool IsConnected
{
get { return _isConnected; }
private set { _isConnected = value; }
}
public string match
{
get { return _match; }
set { _match = value; }
}
public BTManager()
{
client = new BluetoothClient();
}
public void HandleThread()
{
BluetoothDeviceInfo device;
while (!this.findDevice(out device)) ;
Console.WriteLine("About to pair");
int count = 0;
int max = 5;
while ((!(BluetoothSecurity.PairRequest(device.DeviceAddress, defpin))) && count < max)
{
Console.WriteLine("Pairing Failed, retrying");
count++;
Thread.Sleep(100);
}
if (count == max)
{
HandleThread();
}
else
{
Console.WriteLine("Paired..Beginning connect");
client.BeginConnect(device.DeviceAddress, BluetoothService.SerialPort, this.callback, client);
}
}
private void callback(IAsyncResult result)
{
client.EndConnect(result);
this.tcpListener = new TcpListener(IPAddress.Loopback, _port);
this.tcpListener.Start();
TcpClient TcpClient = this.tcpListener.AcceptTcpClient();
NetworkStream networkStream = TcpClient.GetStream();
Stream bluetoothStream = client.GetStream();
byte[] fromNetwork = new byte[1024];
byte[] fromBluetooth = new byte[1024];
while (client.Connected && TcpClient.Connected)
{
try
{
if (networkStream.CanRead)
{
Array.Clear(fromNetwork, 0, 1024);
networkStream.Read(fromNetwork, 0, 1024);
Console.WriteLine(Encoding.ASCII.GetString(fromNetwork));
bluetoothStream.Write(fromNetwork, 0, 1024);
bluetoothStream.Flush();
while (bluetoothStream.CanRead)
{
Array.Clear(fromBluetooth, 0, 1024);
bluetoothStream.Read(fromBluetooth, 0, 1024);
Console.WriteLine(Encoding.ASCII.GetString(fromNetwork));
networkStream.Write(fromBluetooth, 0, 1024);
networkStream.Flush();
}
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
this.HandleThread();
}
private bool findDevice(out BluetoothDeviceInfo device)
{
peers = client.DiscoverDevicesInRange();
device = Array.Find(peers, element => element.DeviceName == match);
foreach (BluetoothDeviceInfo btdi in peers)
{
Console.WriteLine(btdi.DeviceName);
}
if (device == null)
{
Console.WriteLine(Name +": Not Found");
return false;
}
else
{
Console.WriteLine(Name +": Found");
return true;
}
}
}
}
