Мое приложение прослушивает определенный порт для сообщений сокетов.Я вижу, что это LISTENING через "netstat -a" в командной строке.
Когда я закрываю приложение, машина все еще прослушивает этот порт, когда я повторно запускаю "netstat -a"
Это проблема?
Похоже, что так оно и есть, поскольку, когда я впоследствии снова запускаю приложение, оно неуважительно падает.
Как я могу прекратить прослушивание??
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.Diagnostics;
namespace testSocketSendAndReceive_Nutshell
{
public partial class Form1 : Form
{
string sJerrysIPAddr = "10.24.93.110";
string sMyIPAddr = "10.24.93.128";
string sThisAppFileName = string.Empty;
bool bThisInstanceFunctionsAsServer = false;
internal static Form1 MainSocketPairForm = null;
public Form1()
{
InitializeComponent();
MainSocketPairForm = this;
}
private void Form1_Load(object sender, EventArgs e)
{
sThisAppFileName = System.Diagnostics.Process.GetCurrentProcess().ProcessName; // This provides just the app name, appending ".vshost" but NOT ".exe" (testSocketSendAndReceive_Nutshell.vshost)
lblFileName.Text = sThisAppFileName;
// Client and Server code are here combined in one app; however, we want each instance to run as
// just one or the other, so (the .exe functioning as a Server should be renamed with the subString
// "Server" somewhere in the filename):
bThisInstanceFunctionsAsServer = sThisAppFileName.Contains("Server");
if (bThisInstanceFunctionsAsServer)
{
new Thread(Server).Start(); // Run server method concurrently.
Thread.Sleep(500); // Give server time to start.
}
btnSendMsg.Visible = !bThisInstanceFunctionsAsServer;
textBox1.Visible = !bThisInstanceFunctionsAsServer;
}
static void Client()
{
using (TcpClient client = new TcpClient(Form1.MainSocketPairForm.sJerrysIPAddr, 51111)) // err here second time around
using (NetworkStream n = client.GetStream())
{
BinaryWriter w = new BinaryWriter(n);
w.Write(Form1.MainSocketPairForm.textBox1.Text.ToString());
w.Flush();
Form1.MainSocketPairForm.label1.Text = new BinaryReader(n).ReadString();
}
}
static void Server()
{
TcpListener listener = new TcpListener(IPAddress.Any, 51111);
listener.Start();
var shouldExit = false;
while (!shouldExit)
using (TcpClient c = listener.AcceptTcpClient())
{
using (NetworkStream n = c.GetStream())
{
string msg = new BinaryReader(n).ReadString();
if (msg == "exit")
// Client told us to exit...
shouldExit = true;
BinaryWriter w = new BinaryWriter(n);
w.Write(msg + " back atcha!");
w.Flush(); // Must call Flush because we're not disposing the writer.
}
}
}
private void button1_Click(object sender, EventArgs e)
{
Client();
}
private void button2_Click(object sender, EventArgs e)
{
Close();
}
}
}