#region Start The Policy Server 驗證策略文件
PolicySocketServer StartPolicyServer = new PolicySocketServer();
Thread th = new Thread(new ThreadStart(StartPolicyServer.StartSocketServer));
th.IsBackground = true;
th.Start();
#endregion

 //客戶端傳入的起始坐標
private double startx = 0;
private double starty = 0;
//服務(wù)器端生成的新坐標
private double X;
private double Y;
//判斷是否成功接收服務(wù)器發(fā)來的新的坐標
bool receivedCoor = false;
//夠找新坐標時的步長
private double step = 0;

    private void StartupSocketServer()
{
//定時器，每0.3秒運行一次指定的方法
//這里可自己手動修改刷新數(shù)據(jù)的時間
_timer = new System.Timers.Timer();
_timer.Interval = 300;
_timer.Elapsed += new System.Timers.ElapsedEventHandler(_timer_Elapsed);
_timer.Start();
//初始化Socket
_listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//創(chuàng)建終結(jié)點，獲取當前主機IP
IPHostEntry ipHost = Dns.GetHostEntry(Dns.GetHostName());
IPEndPoint localEndPoint = new IPEndPoint(ipHost.AddressList[3], 4530);
//Win7 啟動了IPV6地址，所以是3，如果為XP系統(tǒng)可換成0,1再試試
_syncContext.Post(ChangeIPText, ipHost.AddressList[3].ToString());
//綁定端口
            _listener.Bind(localEndPoint);
_listener.Listen(100);
while (true)
{
//重置ManualResetEvent,由線程來控制ManualResetEvent
                _connectDone.Reset();
_listener.BeginAccept(new AsyncCallback(OnClientConnect), null);
_connectDone.WaitOne();
}
}

private void OnClientConnect(IAsyncResult result)
{
_connectDone.Set();
ClientSocketPacket client = new ClientSocketPacket();
client.Socket = _listener.EndAccept(result);
_clientList.Add(client);
_syncContext.Post(ResultCallback, "客戶端已經(jīng)連接");
try
{
client.Socket.BeginReceive(client.Buffer, 0, client.Buffer.Length, SocketFlags.None, new AsyncCallback(OnDataReceived), client);
}
catch (SocketException ex)
{
HandleException(client, ex);
}
}

  private void OnDataReceived(IAsyncResult result)
{
ClientSocketPacket client = result.AsyncState as ClientSocketPacket;
int count = 0;
try
{
if (client.Socket.Connected)
count = client.Socket.EndReceive(result);
}
catch (SocketException ex)
{
HandleException(client,ex);
}
foreach (byte b in client.Buffer.Take(count))
{
if (b == 0)
continue;
client.RececivedByte.Add(b);
}
string receivedString = UTF8Encoding.UTF8.GetString(client.Buffer, 0, count);
if (client.Socket.Connected && client.Socket.Available == 0 && receivedString.Contains(_endMarker))
{
string content = UTF8Encoding.UTF8.GetString(client.RececivedByte.ToArray());
content = content.Replace(_endMarker, "");
client.RececivedByte.Clear();
SendData("服務(wù)器端已經(jīng)成功接收數(shù)據(jù)！");
_syncContext.Post(ResultCallback, "服務(wù)器在" + DateTime.Now.ToShortTimeString() + "接收數(shù)據(jù)：" + content);
}
//對接受的數(shù)據(jù)進行分析
//便于簡單,客戶端發(fā)送的坐標字符串格式是"x|y"
//所以這里只是簡單的判斷是否有'|’標識符
if (receivedString.Contains("|"))
{
string[] coordinates = receivedString.Split('|');
startx = Convert.ToDouble(coordinates[0]);
starty = Convert.ToDouble(coordinates[1]);
_syncContext.Post(ChangeReceivedText, receivedString);
step = 0;
receivedCoor = true;
}
try
{
// 繼續(xù)開始接收客戶端傳入的數(shù)據(jù)
if (client.Socket.Connected)
client.Socket.BeginReceive(client.Buffer, 0, client.Buffer.Length, 0, new AsyncCallback(OnDataReceived), client);
}
catch (SocketException ex)
{
HandleException(client, ex);
}
}

 private void SendData(string data)
{
byte[] byteData = UTF8Encoding.UTF8.GetBytes(data);
for (int i = 0; i < _clientList.Count;i++ )
{
if (_clientList[i].Socket.Connected)
{
_clientList[i].Socket.BeginSend(byteData, 0, byteData.Length, SocketFlags.None, new AsyncCallback(OnDataSend), _clientList[i]);
_syncContext.Post(ResultCallback, "服務(wù)器在" + DateTime.Now.ToShortTimeString() + "發(fā)送數(shù)據(jù)：" + data);
}
else
{
_clientList[i].Socket.Close();
_clientList.Remove(_clientList[i]);
}
}
}

  private void newCoordinate(out double latitude, out double longitude, ref double step)
{
latitude = startx + 30 * step;
longitude = starty + 100 * Math.Sin(step);
step = step + 0.1;
}

  private void _timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
//如果服務(wù)器成功接收客戶端傳入的坐標，則向服務(wù)器發(fā)送數(shù)據(jù)
if (receivedCoor == true)
{
newCoordinate(out X, out Y, ref step);
string lat = startx.ToString("#0.00");
string lon = starty.ToString("#0.00");
//將新的坐標發(fā)送給客戶端
SendData(string.Format("{0}|{1}", X, Y));
}
}

     private void ResultCallback(object result)
{
// 輸出相關(guān)信息
            listBox1.Items.Add(result);
}
private void ChangeIPText(object str)
{
HostIPTextBox.Text = str.ToString();
}
private void ChangeReceivedText(object str)
{
ReceivedTextBox.Text = str.ToString();
}

 private void StartButton_Click(object sender, EventArgs e)
{
// 啟動后臺線程去運行 Socket 服務(wù)
Thread thread = new Thread(new ThreadStart(StartupSocketServer));
thread.IsBackground = true;
thread.Start();
}
private void ClearButton_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();
}

  private void socketEventArg_Completed(object sender, SocketAsyncEventArgs e)
{
//檢查是否發(fā)送出錯
if (e.SocketError != SocketError.Success)
{
if (e.SocketError == SocketError.ConnectionAborted)
{
Dispatcher.BeginInvoke(() => MessageBox.Show("連接超時....請重試！"));
}
else if (e.SocketError == SocketError.ConnectionRefused)
{
Dispatcher.BeginInvoke(() => MessageBox.Show("無法連接到服務(wù)器端："+e.SocketError));
}else
{
Dispatcher.BeginInvoke(() => MessageBox.Show("Socket連接已斷開！"));
}
return;
}
//如果連接上，則發(fā)送數(shù)據(jù)
if (e.LastOperation == SocketAsyncOperation.Connect)
{
byte[] userbytes = (byte[])e.UserToken;
e.SetBuffer(userbytes, 0, userbytes.Length);
socket.SendAsync(e);
}//如果已發(fā)送數(shù)據(jù)，則開始接收服務(wù)器回復(fù)的消息
else if (e.LastOperation == SocketAsyncOperation.Send)
{
Dispatcher.BeginInvoke(() =>
{
listBox1.Items.Add("客戶端在" + DateTime.Now.ToShortTimeString() + "，發(fā)送消息：" + MessageTextBox.Text);
});
byte[] userbytes = new byte[1024];
e.SetBuffer(userbytes, 0, userbytes.Length);
socket.ReceiveAsync(e);
}//接收服務(wù)器數(shù)據(jù)
else if (e.LastOperation == SocketAsyncOperation.Receive)
{
string RecevieStr = Encoding.UTF8.GetString(e.Buffer, 0, e.Buffer.Length).Replace("\0", "");
Dispatcher.BeginInvoke(() =>
{
listBox1.Items.Add("服務(wù)器在" + DateTime.Now.ToShortTimeString() + "，回復(fù)消息：" + RecevieStr);
});
//分析服務(wù)器發(fā)送回來的坐標數(shù)據(jù)，數(shù)據(jù)格式“x|y”
if (RecevieStr.Contains("|"))
{
string[] coor = RecevieStr.Split('|');
//構(gòu)造新的坐標點
MapPoint mp1 = new MapPoint(Convert.ToDouble(x), Convert.ToDouble(y));
x = coor[0];
y = coor[1];
MapPoint mp2 = new MapPoint(Convert.ToDouble(x), Convert.ToDouble(y));
//在地圖中繪制點和軌跡
Dispatcher.BeginInvoke(() => { CreatPoint(mp2); });
Dispatcher.BeginInvoke(() => { CreatLine(mp1, mp2);});
}
//繼續(xù)向服務(wù)器接收數(shù)據(jù)，注意不要關(guān)閉Socket連接
                socket.ReceiveAsync(e);
}
}

    private void CreatPoint(MapPoint mp)
{
Graphic g = new Graphic()
{
Symbol = new SimpleMarkerSymbol()
{
Size = 18,
Color = new SolidColorBrush(Colors.Blue),
Style = SimpleMarkerSymbol.SimpleMarkerStyle.Circle
},
Geometry = mp
};
graphiclayer.Graphics.Clear();
graphiclayer.Graphics.Add(g);
}
private void CreatLine(MapPoint mp1,MapPoint mp2)
{
ESRI.ArcGIS.Client.Geometry.Polyline pl = new ESRI.ArcGIS.Client.Geometry.Polyline();
ESRI.ArcGIS.Client.Geometry.PointCollection pc = new ESRI.ArcGIS.Client.Geometry.PointCollection();
pc.Add(mp1);
pc.Add(mp2);
pl.Paths.Add(pc);
Graphic g = new Graphic()
{
Symbol=LayoutRoot.Resources["LineSymbol"] as SimpleLineSymbol,
Geometry = pl
};
routeLayer.Graphics.Add(g);
}

  private void MyMap_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs e)
{
MapPoint mp = e.MapPoint;
x = mp.X.ToString ("#0.00");
y = mp.Y.ToString ("#0.00");
Graphic g = new Graphic()
{
Symbol = new SimpleMarkerSymbol()
{
Size=9,
Color=new SolidColorBrush(Colors.Blue),
Style=SimpleMarkerSymbol.SimpleMarkerStyle.Circle
},
Geometry=mp
};
graphiclayer.Graphics.Add(g);
MessageTextBox.Text = x + "|" + y;
}

<UserControl
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas./markup-compatibility/2006"
xmlns:esri="http://schemas./arcgis/client/2009" x:Class="SilverlightSocket.MainPage"
mc:Ignorable="d">
<Grid x:Name="LayoutRoot" Background="White" Width="900">
<Grid.Resources>
<esri:SimpleLineSymbol x:Key="LineSymbol" Color="Red" Style="Solid" Width="3"/>
</Grid.Resources>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.868*"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
</Grid.RowDefinitions>
<esri:Map x:Name="MyMap" Background="White" WrapAround="True" Grid.ColumnSpan="2">
<esri:ArcGISTiledMapServiceLayer Url="http://www./ArcGIS/rest/services/ChinaOnlineStreetColor/MapServer"/>
<esri:GraphicsLayer ID="routeLayer"/>
<esri:GraphicsLayer ID="GraphicLayer"/>
</esri:Map>
<StackPanel Grid.Column="1" Background="#7F094870">
<StackPanel.Effect>
<DropShadowEffect/>
</StackPanel.Effect>
<TextBlock x:Name="textBlock1" Text="主機IP" Grid.Column="1" Margin="5,5,0,0" Foreground="#FFE7D4E3" FontWeight="Bold" />
<TextBox x:Name="IPTextBox" Text="169.254.57.67" Grid.Column="1" d:LayoutOverrides="Width" Margin="5,5,0,0" HorizontalAlignment="Left"/>
<TextBlock x:Name="textBlock2" Text="端口號" Grid.Column="1" Margin="5,5,0,0" Foreground="#FFE7D4E3" FontWeight="Bold" />
<TextBox x:Name="PortTextBox" Width="51" Text="4530" Grid.Column="1" Margin="5,5,0,0" HorizontalAlignment="Left"/>
<TextBlock  x:Name="textBlock4" Text="消息記錄：" Height="23" Grid.Column="1" Margin="5,5,0,0" Foreground="#FFE7D4E3" FontWeight="Bold" />
<ListBox  x:Name="listBox1" Grid.Column="1" Margin="5,5,0,0" Height="200" />
<TextBlock x:Name="textBlock3" Text="發(fā)送信息內(nèi)容" Height="16" Grid.Column="1" d:LayoutOverrides="Width" Margin="5,5,0,0" Foreground="#FFE7D4E3" FontWeight="Bold" VerticalAlignment="Bottom" />
<TextBox x:Name="MessageTextBox" Grid.Column="1" Height="50" Margin="5,5,0,0" VerticalAlignment="Bottom" />
<Button Content="發(fā)送" Height="23" x:Name="SendButton" Grid.Column="1" Margin="5,5,0,0" VerticalAlignment="Bottom" />
<Button Content="清空" Height="23" x:Name="ClearButton" Grid.Column="1" Margin="5,5,0,0" VerticalAlignment="Bottom" />
<Button Content="停止" Height="23" x:Name="StopButton" Grid.Column="1" Margin="5,5,0,0" VerticalAlignment="Bottom" Click="StopButton_Click_1" />
</StackPanel>
<esri:ScaleLine HorizontalAlignment="Left" VerticalAlignment="Bottom" Margin="30,0,0,20" Map="{Binding ElementName=MyMap}"/>
</Grid>
</UserControl>