本文介绍了检查是否使用了TCP端口号的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在研究一个数据库应用程序,其中服务器需要为每个新的数据库文件动态分配一个未使用的TCP端口号。如果它选择一个特定的端口号(例如7890),它如何使用.NET Framework检查该端口是否已在该计算机上使用?
I am working on a database application in which the server needs to dynamically allocate an unused TCP port number to each new database file. If it chooses a particular port number (such as 7890), how can it use the .NET Framework to check if that port is already in use on that computer?
推荐答案试试这个代码 Try this code
尝试 |
Dim soc As Socket = 新 System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork,System.Net.Sockets.SocketType.Stream,System.Net。 Sockets.ProtocolType.Tcp) |
soc.Connect(IPAddress.Parse( " 127.0.0.1" ),1001) |
如果 soc。已连接= True 然后 |
MessageBox.Show( " Port is Closed" ) |
结束 如果 |
Catch ex As SocketException |
如果 ex.ErrorCode = 10061 然后 |
MessageBox.Show( "端口打开" ) |
结束 如果 |
Try |
Dim soc As Socket = New System.Net.Sockets.Socket(System.Net.Sockets.AddressFamily.InterNetwork, System.Net.Sockets.SocketType.Stream, System.Net.Sockets.ProtocolType.Tcp) |
soc.Connect(IPAddress.Parse("127.0.0.1"), 1001) |
If soc.Connected = True Then |
MessageBox.Show("Port is Closed") |
End If |
Catch ex As SocketException |
If ex.ErrorCode = 10061 Then |
MessageBox.Show("Port is Open") |
End If |
End Try |
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检查是否使用了TCP端口号
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