(VB.NET UWP/WinRT) Accept Connection on Socket

Demonstrates how to create a TCP/IP socket, listen on a port, accept an incoming connection, and send a "Hello World" message to the client.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim listenSocket As New Chilkat.Socket

' Bind to a port and listen for incoming connections:
' This example will listen at port 5555 and allows for a backlog
' of 25 pending connection requests.
Dim success As Boolean = Await listenSocket.BindAndListenAsync(5555,25)
If (success <> True) Then
    Debug.WriteLine(listenSocket.LastErrorText)
    Exit Sub
End If


' Get the next incoming connection
' Wait a maximum of 20 seconds (20000 millisec)
Dim connectedSocket As Chilkat.Socket
connectedSocket = Await listenSocket.AcceptNextConnectionAsync(20000)
If (listenSocket.LastMethodSuccess = False) Then
    Debug.WriteLine(listenSocket.LastErrorText)
    Exit Sub
End If


' Set maximum timeouts for reading an writing (in millisec)
connectedSocket.MaxReadIdleMs = 10000
connectedSocket.MaxSendIdleMs = 10000

' Send a "Hello World!" message to the client:
success = Await connectedSocket.SendStringAsync("Hello World!")
If (success <> True) Then
    Debug.WriteLine(connectedSocket.LastErrorText)

    Exit Sub
End If


' Close the connection with the client.
' Wait a max of 20 seconds (20000 millsec)
success = Await connectedSocket.CloseAsync(20000)

Debug.WriteLine("success!")