VB.NET MultiThreaded Client Socket Programming

The MultiThreaded Client Socket Program is a Windows-based application specifically designed to establish communication with a server. In this program, the client is configured to connect to the server using PORT 8888. Since the server and client programs are intended to run on the same machine, the server address provided is "127.0.0.1", which refers to the local machine or localhost.

The Multithreaded Socket Programming has two sections.

1. Multithreaded Server Socket Program

2. Multithreaded Client Socket Program

By launching the MultiThreaded Client Socket Program, users can establish a connection with the server using the specified server address and port. This connection allows for seamless data exchange and communication between the client and the server.

Multithreaded Client Socket Program

The choice of a multi-threaded approach in the client program ensures efficient and concurrent handling of communication tasks. Each client connection is managed by a dedicated thread, allowing for simultaneous interactions with the server and other connected clients.

clientSocket.Connect("127.0.0.1", 8888)

By specifying the server address as "127.0.0.1", developers ensure that the client program connects to the server running on the same machine. This local connection facilitates quick and reliable communication without the need for external network configurations.

Upon successful connection between the client and the server, the server program initiates a separate thread specifically dedicated to handling the communication with that particular client. This threaded approach allows for the establishment of multiple client connections simultaneously, enabling concurrent communication with multiple clients.

By creating a separate thread for each client's communication, the server can effectively manage and handle multiple client connections concurrently. This multi-threading mechanism ensures that each client's communication is independent and does not interfere with other client interactions. As a result, the server can accommodate and serve multiple clients simultaneously, facilitating efficient and parallel communication.

The use of separate threads for client communication enhances the scalability and responsiveness of the server. It allows for concurrent processing of client requests and responses, thereby improving the overall performance of the system. This threaded approach is particularly beneficial in scenarios where there is a need to handle a large number of client connections concurrently.

Create a new VB.NET Windows based application and put the following source code in the Project.

Full Source VB.NET
Imports System.Net.Sockets Imports System.Text Public Class Form1 Dim clientSocket As New System.Net.Sockets.TcpClient() Dim serverStream As NetworkStream Private Sub Button1_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles Button1.Click Dim serverStream As NetworkStream = clientSocket.GetStream() Dim buffSize As Integer Dim outStream As Byte() = _ System.Text.Encoding.ASCII.GetBytes("Message from Client$") serverStream.Write(outStream, 0, outStream.Length) serverStream.Flush() Dim inStream(10024) As Byte buffSize = clientSocket.ReceiveBufferSize serverStream.Read(inStream, 0, buffSize) Dim returndata As String = _ System.Text.Encoding.ASCII.GetString(inStream) msg("Data from Server : " + returndata) End Sub Private Sub Form1_Load(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Handles MyBase.Load msg("Client Started") clientSocket.Connect("127.0.0.1", 8888) Label1.Text = "Client Socket Program - Server Connected ..." End Sub Sub msg(ByVal mesg As String) TextBox1.Text = TextBox1.Text + Environment.NewLine + " >> " + mesg End Sub End Class

The Multithreaded Socket Programming has two sections.

1. Multithreaded Server Socket Program

2. Multithreaded Client Socket Program

You have to run Server program first and then Client program , then only you can communicate with Server and Client each other .

Conclusion

The MultiThreaded Client Socket Program is a Windows-based application designed for seamless communication with a server. It establishes a connection to the server using the specified server address ("127.0.0.1") and PORT 8888. By using multi-threading capabilities, the client program can effectively manage and handle concurrent communication tasks, enabling efficient interactions with the server and other clients.