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(Chilkat2-Python) Async Accept Socket ConnectionDemonstrates how to get the connected client socket after accepting a connection asynchronously.
import sys import chilkat2 # This example assumes the Chilkat Socket API to have been previously unlocked. # See Socket Unlock Sample for sample code. listenSocket = chilkat2.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 != True): print(listenSocket.LastErrorText) sys.exit() # Start a background task to accept an incoming connection ... maxWaitMs = 20000 # acceptTask is a CkTask 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 = chilkat2.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. |
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