C#套接字应用程序中的内存泄漏
我正在尝试编写一个服务器应用程序，该应用程序正在侦听某个特定端口，并等待设备访问该端口。设备连接后，每30秒连接一次，设备发送其MAC地址。但问题是，内存一直在增加，而且从未释放出来C#套接字应用程序中的内存泄漏,c#,multithreading,sockets,memory,memory-leaks,C#,Multithreading,Sockets,Memory,Memory Leaks,我正在尝试编写一个服务器应用程序，该应用程序正在侦听某个特定端口，并等待设备访问该端口。设备连接后，每30秒连接一次，设备发送其MAC地址。但问题是，内存一直在增加，而且从未释放出来 class Server { Object threadLock = new Object(); bool stopListening = false; Socket clientSocket = null; private void StartDeviceListener()
class Server
{
Object threadLock = new Object();
bool stopListening = false;
Socket clientSocket = null;
private void StartDeviceListener()
{
try
{
// create the socket
clientSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
// bind the listening socket to the port
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, 60000);
clientSocket.LingerState = new LingerOption(false, 0);
clientSocket.Bind(ep1);
clientSocket.Listen(10); //Waiting for Devices to connect.
do
{
// start listening
Console.WriteLine("Waiting for device connection on {0}....", 60000);
Socket deviceSocket = clientSocket.Accept();
//Console.WriteLine(deviceSocket.
#region ThreadPool
// ThreadPool.QueueUserWorkItem(ProcessRequest, (Object)deviceSocket);
Thread ts = new Thread(ProcessRequest);
ts.IsBackground = true;
ts.Start((Object)deviceSocket);
ts.Join();
#endregion
} while (!stopListening);
}
catch (Exception ex)
{
Console.WriteLine("exception... : " + ex.Message);
StartDeviceListener();
}
finally
{
if (clientSocket != null) { clientSocket.Close(); clientSocket = null; }
}
}
public void Stop()
{
try
{
stopListening = true;
if (clientSocket != null)
{
clientSocket.Disconnect(false);
clientSocket = null;
}
}
catch (Exception ex)
{
Console.WriteLine("exception : " + ex.Message);
}
}
void ProcessRequest(Object args)
{
using (Socket deviceSocket = args as Socket)
{
try
{
//lock the thread while we are creating the client IO Interface Manager
lock (threadLock)
{
byte[] readBuffer = new byte[1024];
// Read from buffer
int count = deviceSocket.Receive(readBuffer, 0, readBuffer.Length, SocketFlags.None);
String macAddress = "";//mac address sent by the device:
if (count > 0)
{
Encoding encoder = Encoding.ASCII;
int size = 0;
while (count > 0)
{
size += count;
// get string
macAddress += encoder.GetString(readBuffer, 0, count).Trim();
// Read from buffer
count = 0;
}
Console.WriteLine(string.Format("{0} trying to connect....", macAddress));
}
deviceSocket.Close();
readBuffer = null;
}
//threadLock = null;
}
catch (Exception ex)
{
Console.WriteLine("exception : " + ex.Message);
}
}
args = null;
}
public void Start()
{
StartDeviceListener();
}
}`
class Server
{
Object threadLock = new Object();
bool stopListening = false;
Socket clientSocket = null;
private void StartDeviceListener()
{
try
{
// create the socket
clientSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Stream,
ProtocolType.Tcp);
// bind the listening socket to the port
IPEndPoint ep1 = new IPEndPoint(IPAddress.Any, 60000);
clientSocket.LingerState = new LingerOption(false, 0);
clientSocket.Bind(ep1);
clientSocket.Listen(10); //Waiting for Devices to connect.
do
{
// start listening
Console.WriteLine("Waiting for device connection on {0}....", 60000);
Socket deviceSocket = clientSocket.Accept();
//Console.WriteLine(deviceSocket.
#region ThreadPool
// ThreadPool.QueueUserWorkItem(ProcessRequest, (Object)deviceSocket);
Thread ts = new Thread(ProcessRequest);
ts.IsBackground = true;
ts.Start((Object)deviceSocket);
ts.Join();
#endregion
} while (!stopListening);
}
catch (Exception ex)
{
Console.WriteLine("exception... : " + ex.Message);
StartDeviceListener();
}
finally
{
if (clientSocket != null) { clientSocket.Close(); clientSocket = null; }
}
}
public void Stop()
{
try
{
stopListening = true;
if (clientSocket != null)
{
clientSocket.Disconnect(false);
clientSocket = null;
}
}
catch (Exception ex)
{
Console.WriteLine("exception : " + ex.Message);
}
}
void ProcessRequest(Object args)
{
using (Socket deviceSocket = args as Socket)
{
try
{
//lock the thread while we are creating the client IO Interface Manager
lock (threadLock)
{
byte[] readBuffer = new byte[1024];
// Read from buffer
int count = deviceSocket.Receive(readBuffer, 0, readBuffer.Length, SocketFlags.None);
String macAddress = "";//mac address sent by the device:
if (count > 0)
{
Encoding encoder = Encoding.ASCII;
int size = 0;
while (count > 0)
{
size += count;
// get string
macAddress += encoder.GetString(readBuffer, 0, count).Trim();
// Read from buffer
count = 0;
}
Console.WriteLine(string.Format("{0} trying to connect....", macAddress));
}
deviceSocket.Close();
readBuffer = null;
}
//threadLock = null;
}
catch (Exception ex)
{
Console.WriteLine("exception : " + ex.Message);
}
}
args = null;
}
public void Start()
{
StartDeviceListener();
}
}`
当您确实想要查找/解决内存问题时，请使用探查器 @Dimitry:如果你必须手动开始垃圾收集，那么你正在做一些非常糟糕或非常奇怪的事情。这真的是个例外。亲自调用垃圾收集器是个好主意。尝试使用tousends连接添加100kb，这是内存泄漏吗？@rahul-这看起来不是真正的问题。内存只在需要时收集，或者GC需要时收集。要知道这是否是一个真正的内存泄漏，你需要给我们一个内存分析器，因为它在应用程序的开始和结束时都会挂接到应用程序中，并能告诉你什么时候发生了真正的内存泄漏。在分析时使用GC.Collect（）非常好，因为这样做只是为了查看等待收集的内存。在生产应用程序中不会这样做。此外，虚拟内存是什么并不重要，这不是一个实际分配的内存数。您是否尝试过不创建自己的线程并使用线程池（更好一点）甚至任务（更好一点，但取决于您使用的.Net版本）来完成这项工作？只需连接一个设备就可以了；但是如果我有像4K-5K这样的设备试图连接，问题会被放大。放大了多少，它会变平还是会出现OOM异常？如果我让服务器运行一天，它会一直增加到1GB；在那之后，我无法连接任何设备。因此，我有一个计划任务，每天重新启动m/c和服务器一次，但我猜这是另一个版本（更多代码），而不是发布在这里的版本。我看到一个单线程服务器，但没有明显的漏洞。问题可能在其他代码中。。。