Opening a socket to a remote host in .NET

Printing qr barcode in .NET Opening a socket to a remote host
Opening a socket to a remote host
.net Framework qr-code generator on .net
using .net framework todraw quick response code for asp.net web,windows application
To open a socket to a remote host, first create an endpoint object that defines the address of the remote host. For example, the following line of code creates a DnsEndPoint object that points to port 4510 on host www.MySocketServer.com:
VS .NET qr code recognizer with .net
Using Barcode decoder for .net framework Control to read, scan read, scan image in .net framework applications.
DnsEndPoint ePoint = new DnsEndPoint( www.MySocketServer.com , 4510);
VS .NET barcode creation with .net
using visual studio .net toencode barcode for asp.net web,windows application
You also need to create a Socket object. To create a Socket object, use the constructor of the Socket class. The Socket class constructor takes three arguments an AddressFamily, SocketType, and ProtocolType. The AddressFamily argument supports both the InterNetwork (IPv4) and InterNetworkV6 (IPv6) protocols. The SocketType argument only supports Stream. The ProtocolType argument only supports the Tcp protocol. The following code shows an example of creating a Socket object:
Barcode barcode library with .net
using barcode encoding for visual .net crystal control to generate, create barcode image in visual .net crystal applications.
Socket socket = new Socket(AddressFamily.InterNetwork,
Control quick response code image with .net c#
generate, create qr code iso/iec18004 none in c#.net projects
Using the Silverlight Communication Framework
Control quick response code image for .net
generate, create qr codes none on .net projects
SocketType.Stream, ProtocolType.Tcp);
Visual .net qr code encoder for visual basic
generate, create qrcode none with vb projects
After you create the endpoint object and the Socket object, you need to set up the SocketAsyncEventArgs object that will be used to connect the socket to the remote host. Specifically, you need to set the UserToken property to the Socket object and the RemoteEndPoint property to the endpoint object. For example:
Bar Code 39 implement on .net
using vs .net toassign code 39 on asp.net web,windows application
SocketAsyncEventArgs sArgs = new SocketAsyncEventArgs(); sArgs.UserToken = socket; sArgs.RemoteEndPoint = ePoint;
UPCA development for .net
using .net vs 2010 toproduce gs1 - 12 for asp.net web,windows application
Next, attach an event handler to handle the completed connection event. The Socket object itself does not have any event handlers associated with it, so you will need to use the Completed event handler with the SocketAsyncEventArgs object. For example, the following code adds an OnSocketConnectCompleted() event handler to the SocketAsyncEventArgs object created previously:
Display 2d barcode with .net
using .net crystal todisplay 2d barcode with asp.net web,windows application
sArgs.Completed += new EventHandler<SocketAsyncEventArgs>(OnSocketConnectCompleted);
Ean13 integrating in .net
using barcode creator for .net vs 2010 crystal control to generate, create ean13 image in .net vs 2010 crystal applications.
When the connection is opened to the remote host, the OnSocketConnectCompleted() event handler is called. To open the connection to the remote host, use the ConnectAsync() method of the Socket object and pass the SocketAsyncEventArgs object as shown in the following line:
Make msi plessey in .net
using barcode creation for visual studio .net control to generate, create modified plessey image in visual studio .net applications.
socket.ConnectAsync(sArgs);
Control qr code image for vb.net
using visual .net togenerate qr bidimensional barcode in asp.net web,windows application
Sending data on a socket
Java data matrix barcodes development on java
using java tocreate datamatrix in asp.net web,windows application
To send data on a socket, use the SendAsync() method. As with the ConnectAsync() method, you need to set up a SocketAsyncEventArgs object again. The UserToken property must be set to the Socket object and the RemoteEndPoint property must be set to the endpoint object. If you are sending data in the connection completed event handler function, you can use the SocketAsyncEventArgs object that is passed as the second argument to the handler. The UserToken and RemoteEndPoint properties are already set to the Socket and endpoint objects. You also need to provide the data that is sent on the socket. This is done by encoding the data into a byte buffer, as shown in the following line:
Control pdf-417 2d barcode image in office excel
using excel toincoporate pdf417 in asp.net web,windows application
Byte[] bytes = Encoding.UTF8.GetBytes( My Data );
Control code-39 size in office excel
to generate 39 barcode and 39 barcode data, size, image with excel barcode sdk
The encoded data can then be attached to the SocketAsyncEventArgs object using the SetBuffer() function. The SetBuffer() function accepts a byte array as the first parameter,
Pdf417 barcode library in .net
generate, create pdf417 none in .net projects
Part IV
QR Code ISO/IEC18004 barcode library for visual basic.net
using barcode generation for aspx.cs page crystal control to generate, create qrcode image in aspx.cs page crystal applications.
Understanding Silverlight Frameworks
Control pdf417 size in vb
barcode pdf417 size with visual basic.net
an int offset as the second, and an int length as the third. The following code shows an example of adding the byte array bytes from the earlier line into a SocketAsyncEventArgs object args:
Data Matrix barcode library in vb
generate, create data matrix barcode none for vb projects
args.SetBuffer(bytes, 0, bytes.Length);
Next, attach an event handler to handle the send completed event. Because the Socket object itself does not have any event handlers associated with it, you need to use the Completed event handler with the SocketAsyncEventArgs object. For example, the following code adds an OnSendCompleted() event handler to a SocketAsyncEventArgs object args:
args.Completed += new EventHandler<SocketAsyncEventArgs>(OnSendCompleted);
If the connection completed event handler is still attached to the SocketAsyncEventArgs object, remove it before adding the send event handler. To send the data to the remote host, use the SendAsync() method of the Socket object and pass the SocketAsyncEventArgs object, as shown in the following line of code. When data is sent to the remote host, the OnSendCompleted() event handler is called:
socket.SendAsync(args);
Receiving data from a socket
To receive data from a Socket, use the ReceiveAsync() method. Just as with the SendAsync() method, you need to set up a SocketAsyncEventArgs object again. The UserToken property must be set to the Socket object and the RemoteEndPoint property must be set to the endpoint object. If you send data in a connection completed or send completed event handler function, you can use the SocketAsyncEventArgs object that is passed as the second argument to the handler. The UserToken and RemoteEndPoint properties already are set to the Socket and endpoint objects. You also need to provide SocketAsyncEventArgs object with a data buffer that can store data that is received on the socket. This is done by creating a byte array and attaching it to the SocketAsyncEventArgs object using the SetBuffer() function. The SetBuffer() function accepts a byte array as the first parameter, an int offset as the second, and an int length as the third. The following code shows an example of creating a byte array and adding it to a SocketAsyncEventArgs object args:
byte[] response = new byte[1024]; arg.SetBuffer(response, 0, response.Length);