private void SP_ReadData_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// 接收数据
List <byte> buffer = new List <byte>( );
byte[] data = new byte[1024];
while (true)
{
System.Threading.Thread.Sleep(20);
if (SP_ReadData.BytesToRead < 1)
{
break;
}
int recCount = SP_ReadData.Read(data, 0, Math.Min(SP_ReadData.BytesToRead, data.Length));
byte[] buffer2 = new byte[recCount];
Array.Copy(data, 0, buffer2, 0, recCount);
buffer.AddRange(buffer2);
}
if (buffer.Count == 0)
{
return;
}
try
{
byte[] send = buffer.ToArray( );
client.Send(send, 0, send.Length, SocketFlags.None);
}
catch (Exception ex)
{
MessageBox.Show("Client Send Failed! " + ex.Message);
return;
}
Invoke(new Action(() =>
{
string msg = string.Empty;
if (checkBox1.Checked)
{
msg = HslCommunication.BasicFramework.SoftBasic.ByteToHexString(buffer.ToArray( ), ' ');
}
else
{
msg = HslCommunication.BasicFramework.SoftBasic.GetAsciiStringRender(buffer.ToArray( ));
}
DemoUtils.AppendTextBox(textBox6, "Serial-Tcp", msg);
}));
}
private void ReceiveCallBack(IAsyncResult ar)
{
if (ar.AsyncState is ClientSession client)
{
try
{
int length = client.Socket.EndReceive(ar);
if (length == 0)
{
Invoke(new Action(() =>
{
client.Socket.Close( );
DemoUtils.AppendTextBox(textBox6, client.EndPoint.ToString( ), "Client Offline");
}));
client = null;
return;
}
;
client.Socket.BeginReceive(buffer, 0, 2048, SocketFlags.None, new AsyncCallback(ReceiveCallBack), client);
byte[] data = new byte[length];
Array.Copy(buffer, 0, data, 0, length);
remote?.Send(data, 0, data.Length, SocketFlags.None);
Invoke(new Action(() =>
{
string msg = string.Empty;
if (checkBox1.Checked)
{
msg = HslCommunication.BasicFramework.SoftBasic.ByteToHexString(data, ' ');
}
else
{
msg = HslCommunication.BasicFramework.SoftBasic.GetAsciiStringRender(data);
}
DemoUtils.AppendTextBox(textBox6, "Client->Remote", msg);
}));
}
catch
{
Invoke(new Action(() =>
{
this.client = null;
DemoUtils.AppendTextBox(textBox6, "Client Offline", Program.Language == 1 ? "服务器断开连接。" : "DisConnect from remote");
}));
}
}
}
/// <summary>
/// 异步传入的连接申请请求
/// </summary>
/// <param name="iar">异步对象</param>
protected void AsyncAcceptCallback(IAsyncResult iar)
{
//还原传入的原始套接字
if (iar.AsyncState is Socket server_socket)
{
ClientSession session = new ClientSession( );
try
{
// 在原始套接字上调用EndAccept方法，返回新的套接字
client = server_socket.EndAccept(iar);
session.Socket = client;
session.EndPoint = (IPEndPoint)client.RemoteEndPoint;
client.BeginReceive(buffer, 0, 2048, SocketFlags.None, new AsyncCallback(ReceiveCallBack), session);
Invoke(new Action(() =>
{
DemoUtils.AppendTextBox(textBox6, session.EndPoint.ToString( ), "Client Online");
textBox4.Text = client.RemoteEndPoint.ToString( );
}));
}
catch (ObjectDisposedException)
{
// 服务器关闭时候触发的异常，不进行记录
client = null;
return;
}
catch
{
// 有可能刚连接上就断开了，那就不管
client = null;
client?.Close( );
}
server_socket.BeginAccept(new AsyncCallback(AsyncAcceptCallback), server_socket);
}
}
private void RemoteSocketEndReceive(IAsyncResult ar)
{
if (ar.AsyncState is Socket socket)
{
byte[] buffer = new byte[1024];
try
{
int length = socket.Receive(buffer, 0, 1024, SocketFlags.None);
if (length == 0)
{
Invoke(new Action(() =>
{
DemoUtils.AppendTextBox(textBox6, remote.RemoteEndPoint.ToString( ), "Remote Offline");
}));
return;
}
else
{
buffer = buffer.SelectBegin(length);
}
remote.BeginReceive(new byte[0], 0, 0, SocketFlags.None, new AsyncCallback(RemoteSocketEndReceive), remote);
}
catch (Exception ex)
{
Invoke(new Action(() =>
{
DemoUtils.AppendTextBox(textBox6, remote?.RemoteEndPoint.ToString( ), "Remote Offline Exception: " + ex.Message);
}));
return;
}
try
{
client?.Send(buffer, 0, buffer.Length, SocketFlags.None);
Invoke(new Action(() =>
{
string msg = string.Empty;
if (checkBox1.Checked)
{
msg = HslCommunication.BasicFramework.SoftBasic.ByteToHexString(buffer, ' ');
}
else
{
msg = HslCommunication.BasicFramework.SoftBasic.GetAsciiStringRender(buffer);
}
DemoUtils.AppendTextBox(textBox6, "Remote->Client", msg);
}));
}
catch (Exception ex)
{
Invoke(new Action(() =>
{
if (client != null)
{
DemoUtils.AppendTextBox(textBox6, client.RemoteEndPoint.ToString( ), "Client Offline Exception: " + ex.Message);
}
}));
return;
}
}
}