-1
私は、tcpclientとの接続が確立されるまで動作しないウィンドウフォームを持っています。そして、それは正常に機能しません（凍っているようにぶら下がります）。Winform + TCPListenerが正しく読み込まれない
これはTCPListenerのコードです：
using System;
using System.Drawing;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Security.Cryptography;
using System.Text;
using System.Windows.Forms;
namespace ServerChatGUI
{
public partial class Form1 : Form
{
public Timer timer1;
public TcpListener myList = null;
public string EncryptionKey = GetHashedKey("Alexandros");
public Form1()
{
InitializeComponent();
try
{
IPAddress ipAd = IPAddress.Parse("172.17.1.241");
// use local m/c IP address, and
// use the same in the client
/* Initializes the Listener */
myList = new TcpListener(ipAd, 8001);
/* Start Listeneting at the specified port */
myList.Start();
Socket s = myList.AcceptSocket();
this.Show();
chatDisplay_txtbox.AppendText("Connection accepted from " + s.RemoteEndPoint + "\n");
connection_lbl.Text = "Connected";
connection_lbl.ForeColor = Color.Green;
//InitTimer();
}
catch (Exception e)
{
Console.WriteLine("Error..... " + e.ToString());
}
}
public static string GetHashedKey(string text)
{
byte[] bytes = Encoding.UTF8.GetBytes(text);
SHA256Managed hashstring = new SHA256Managed();
byte[] hash = hashstring.ComputeHash(bytes);
string hashString = string.Empty;
int cntr = 0;
foreach (byte x in hash)
{
if (cntr == 1)
{
cntr = 0;
}
else
{
hashString += String.Format("{0:x2}", x);
cntr++;
}
}
return hashString;
}
//Encrypting a string
public static string TxtEncrypt(string inText, string key)
{
byte[] bytesBuff = Encoding.UTF8.GetBytes(inText);
using (Aes aes = Aes.Create())
{
Rfc2898DeriveBytes crypto = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
aes.Key = crypto.GetBytes(32);
aes.IV = crypto.GetBytes(16);
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
cStream.Write(bytesBuff, 0, bytesBuff.Length);
cStream.Close();
}
inText = Convert.ToBase64String(mStream.ToArray());
}
}
return inText;
}
//Decrypting a string
public static string TxtDecrypt(string cryptTxt, string key)
{
cryptTxt = cryptTxt.Replace(" ", "+");
cryptTxt = cryptTxt.Replace("\0", "");
byte[] bytesBuff = Convert.FromBase64String(cryptTxt);
using (Aes aes = Aes.Create())
{
Rfc2898DeriveBytes crypto = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
aes.Key = crypto.GetBytes(32);
aes.IV = crypto.GetBytes(16);
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
cStream.Write(bytesBuff, 0, bytesBuff.Length);
cStream.Close();
}
cryptTxt = Encoding.UTF8.GetString(mStream.ToArray());
}
}
return cryptTxt;
}
private void button1_Click(object sender, EventArgs e)
{
Socket s = myList.AcceptSocket();
chatDisplay_txtbox.AppendText("Me:\t ");
chatDisplay_txtbox.AppendText(inMessage_txtbox.Text + "\n");
String str = TxtEncrypt(inMessage_txtbox.Text, EncryptionKey);
s.Send(Encoding.UTF8.GetBytes(str));
}
public void InitTimer()
{
timer1 = new Timer();
timer1.Tick += new EventHandler(timer1_Tick);
timer1.Interval = 200; // in miliseconds
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
Socket s = myList.AcceptSocket();
if (s.Available > 0)
{
byte[] b = new byte[s.ReceiveBufferSize];
int k = s.Receive(b);
string msg = "";
chatDisplay_txtbox.AppendText("Other:\t");
for (int i = 0; i < k; i++)
{
msg += Convert.ToChar(b[i]);
}
chatDisplay_txtbox.AppendText(TxtDecrypt(msg, EncryptionKey) + "\n");
}
}
}
}
そして、これは、TCPクライアントのコードです（この1は、作業を行う）：私はすることができました何のため
using System;
using System.Drawing;
using System.IO;
using System.Net.Sockets;
using System.Security.Cryptography;
using System.Text;
using System.Windows.Forms;
namespace ChatClientGUI
{
public partial class Form1 : Form
{
public string EncryptionKey = GetHashedKey("Alexandros");
public TcpClient tcpclnt = null;
public bool cntrl = false;
public Timer timer1;
public Form1()
{
InitializeComponent();
try
{
tcpclnt = new TcpClient();
chatDisplayer_txtbox.AppendText("this is the beginning of your chat\n");
tcpclnt.Connect("172.17.1.241", 8001);
// use the ipaddress as in the server program
displayConnection_lbl.Text = "Connected";
displayConnection_lbl.ForeColor = Color.Green;
InitTimer();
}
catch (Exception e)
{
Console.WriteLine("Error..... " + e.ToString());
}
}
public static string GetHashedKey(string text)
{
byte[] bytes = Encoding.UTF8.GetBytes(text);
SHA256Managed hashstring = new SHA256Managed();
byte[] hash = hashstring.ComputeHash(bytes);
string hashString = string.Empty;
int cntr = 0;
foreach (byte x in hash)
{
if (cntr == 1)
{
cntr = 0;
}
else
{
hashString += String.Format("{0:x2}", x);
cntr++;
}
}
return hashString;
}
//Encrypting a string
public static string TxtEncrypt(string inText, string key)
{
byte[] bytesBuff = Encoding.UTF8.GetBytes(inText);
using (Aes aes = Aes.Create())
{
Rfc2898DeriveBytes crypto = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
aes.Key = crypto.GetBytes(32);
aes.IV = crypto.GetBytes(16);
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateEncryptor(), CryptoStreamMode.Write))
{
cStream.Write(bytesBuff, 0, bytesBuff.Length);
cStream.Close();
}
inText = Convert.ToBase64String(mStream.ToArray());
}
}
return inText;
}
//Decrypting a string
public static string TxtDecrypt(string cryptTxt, string key)
{
cryptTxt = cryptTxt.Replace(" ", "+");
byte[] bytesBuff = Convert.FromBase64String(cryptTxt);
using (Aes aes = Aes.Create())
{
Rfc2898DeriveBytes crypto = new Rfc2898DeriveBytes(key, new byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76 });
aes.Key = crypto.GetBytes(32);
aes.IV = crypto.GetBytes(16);
using (MemoryStream mStream = new MemoryStream())
{
using (CryptoStream cStream = new CryptoStream(mStream, aes.CreateDecryptor(), CryptoStreamMode.Write))
{
cStream.Write(bytesBuff, 0, bytesBuff.Length);
cStream.Close();
}
cryptTxt = Encoding.UTF8.GetString(mStream.ToArray());
}
}
return cryptTxt;
}
private void SendMessage_btn_Click(object sender, EventArgs e)
{
chatDisplayer_txtbox.AppendText("Me:\t ");
chatDisplayer_txtbox.AppendText(inMessage_txtbox.Text + "\n");
String str = TxtEncrypt(inMessage_txtbox.Text, EncryptionKey);
Stream stm = tcpclnt.GetStream();
byte[] ba = Encoding.UTF8.GetBytes(str);
stm.Write(ba, 0, ba.Length);
cntrl = true;
}
public void InitTimer()
{
timer1 = new Timer();
timer1.Tick += new EventHandler(timer1_Tick);
timer1.Interval = 200; // in miliseconds
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
if (tcpclnt.Available > 0)
{
Stream stm = tcpclnt.GetStream();
byte[] bb = new byte[tcpclnt.ReceiveBufferSize];
int k = stm.Read(bb, 0, tcpclnt.ReceiveBufferSize);
string msg = "";
chatDisplayer_txtbox.AppendText("Other:\t");
for (int i = 0; i < k; i++)
{
msg += Convert.ToChar(bb[i]);
}
chatDisplayer_txtbox.AppendText(TxtDecrypt(msg, EncryptionKey) + "\n"); ;
}
}
}
}
推測すると、いったん立ち上がるとタイマーに関連しているように見えますが、同じタイマーはTCPクライアントで機能します。
私は本当に迷っています。私は間違いを犯した理由は何か、その理由を理解したいと思います。 誰も私がなぜそれが動作しないのか理解するのを助けることができますか？
メイン（UI）スレッドですべてをやっているので、アプリケーションがフリーズします。非同期オペレーションとスレッドについて読む。 –
私は非同期について読んだことがありますが、実際には私はそれを使用していないと理解していません。また、それはクライアントのために働いた。なぜリスナーにとってうまくいかないのでしょうか？ –
GUIフォームのctorsやイベントハンドラでaccept（）のようなブロッキング呼び出しをしないでください。 –