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• Download demo project - 35.14 KB
• Download source - 9.75 KB

Introduction

ConnectionSocket Class

• Connect Function used to connect to a remote endpoint.
  

• Host string, specifies the IP, it can be (e.g. "127.0.0.1") or (e.g. "www.codeproject.com").
  
• port int, specifies the port in the remote endpoint that there is a socket listening to it.
  
• Mode One of the ConnectionMode enum, it is recommended to use SyncConnectAsyncRecv, other options can also be used.
  

• Bind This function is optional to use, use it to bind this socket to a specific endpoint. If you don't use this function the framework will bind the socket for you.
  
• Send Send the array of bytes to the remote endpoint, use this function for a connected socket only.
  
• Receive This function is used in Blocking mode, to receive data from the remote endpoint, if there is no data received then the thread will be blocked until the data is made available. (It is not recommended to use this function for receiving data.)
  

• Length int, the maximum length of the array that can be passed to the buffer. If the received data is greater than the Length, then the returned array will contain only the data of size Length, you must call Receive again to receive the other data. If the received data is less than the Length, then the returned array will be of the size of the data received.
  

• Close Use this function to close any created socket, for every created socket you must call close socket to close the socket.
  
• Shutdown Use this function to disable send or receive or both, the param is documented in the MSDN.
  

• recieve event Fired when there is data available to be received, the RecieveEventArg contains the data and the data length that is received, don't call Recieve in the recieve event, it will receive the next available data.
  
• create event Fired when the socket is created.
  
• connect event Fired in non Blocking mode (or AsyncConnectionxxxxxxxxx) when the connection is accepted by the remote endpoint.
  
• shutdown event Fired when calling the shutdown function.
  
• send event Fired after the send process ends.
  
• close event Fired if the close function is called or if the remote endpoint closes the connection or if there is any socket exception received. CloseEventArgs contains the exception and a string that specifies the error. You can use it in a message box.
  

ListenSocket Class

• Port Use it to set the port to listen to. You must set it before calling start listen.
  
• StartListen Set the state of the socket to Listening state.
  

• IsBlocked If true, the accept event will not be fired when there is a request for connection, you must call the Accept function. If false, then the accept event fires.
  

• StopListen Stop listening.
  
• close Use this function to close any created socket, for every socket created, you must call close socket to close the socket.
  
• Accept Use this function if you pass true to StartListen. This function will block the thread, until a remote endpoint request connection is made.
  

• create event Fired after creating the socket.
  
• close event Fired if the close function is called or if the remote endpoint closes the connection or if there is any socket exception received. CloseEventArgs contains the exception and a string that specifies the error. You can use it in a message box.
  
• accept event Fired when a connection is accepted from the remote endpoint. The AcceptEventArgs contains a connected socket that is used to create a connection.
  

Example

1. Create a new Windows application project, named SimpleServer.
2. Right click on the Toolbox - add/remove item.
3. Click Browse - select sockets.dll (download it from this article).
4. Click OK.
5. The two classes ConnectSocket, ListenSocket are now in the Toolbox.

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private void button1_Click(object sender, System.EventArgs e)
{
  Socket_Listen.StratListen(false);
}

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private void button2_Click(object sender, System.EventArgs e)
{
   byte[] buff = Socktes.ByesConvertor.GetBytes(textBox1.Text);
   Socket_Connection.Send(buff);
}
//You can use Encoding class to get an array of bytes, but the BytesConvertor 
//class has all the functions we need to use in the socket classes.

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private void Socket_Listen_accept(object Sender, Socktes.AcceptEventArgs e)
{
    Socket_Connection.SocketHandle = e.ConnectedSocket;
}
// e.ConnectedSocket contain a connected socket, 
// set the Connectsocket instance
// to the Connected socket received from the 
// accept event.

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private void Socket_Connection_recieve(object Sender, 
                               Socktes.RecieveEventArgs e)
{
    string s = Socktes.ByesConvertor.BytesToString(e.Data);
    listBox1.Items.Add(s);
}
// recieve the data from the socket and 
// add it to the list box.

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private void button1_Click(object sender, System.EventArgs e)
{
    Socket_Connection.Connect("127.0.0.1",4000);
}

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private void button2_Click(object sender, System.EventArgs e)
{
    byte[] b = Socktes.ByesConvertor.GetBytes(textBox1.Text);
    Socket_Connection.Send(b);
}

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private void Socket_Connection_recieve(object Sender, Socktes.RecieveEventArgs e)
{
    string s = Socktes.ByesConvertor.BytesToString(e.Data);
    listBox1.Items.Add(s);
}