(PowerShell) Async Accept Socket Connection

Demonstrates how to get the connected client socket after accepting a connection asynchronously.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example assumes the Chilkat Socket API to have been previously unlocked.
# See Socket Unlock Sample for sample code.

$listenSocket = New-Object Chilkat.Socket

# Bind to a port and listen.
# This example will listen at port 5555 and allows for a backlog
# of 25 pending connection requests.
$success = $listenSocket.BindAndListen(5555,25)
if ($success -ne $true) {
    $($listenSocket.LastErrorText)
    exit
}

# Start a background task to accept an incoming connection ...
$maxWaitMs = 20000
$acceptTask = $listenSocket.AcceptNextConnectionAsync($maxWaitMs)
$acceptTask.Run()

# ...
# ...
# ...

# Imagine at this point the task has completed successfully,
# and a connection was accepted.  Here's how to get the connected socket...
$connectedClient = New-Object Chilkat.Socket
$success = $connectedClient.LoadTaskResult($acceptTask)

# Here's how it works:  The AcceptNextConnection method would normally
# return a socket object when called synchronously.  When called asynchronously,
# it cannot do so because it returns the task object.  When the async method
# (running in a background thread) completes, the socket object that is the client
# connection is contained within the task object.
# 
# This can be generalized for any case where a Chilkat method returns an object.
# The async version of that method is such that the object returned in the background
# thread is contained within the task object.

# To get the result object, we create a new object instance of that type.
# In this case, we create a socket object (connectedClient).  There is a LoadTaskResult
# method in all Chilkat classes that can be a return value of an async method call.
# The LoadTaskResult method transfers the returned object from the task to the caller.