CkPython

Poll a Socket for Available Data

Demonstrates Socket.PollDataAvailable, which performs a nonblocking check for readable activity and returns whether data or another read-ready condition is present.

Background. This lets an application check for incoming data without blocking, for example in an event loop that services multiple tasks.

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CkPython

import sys
import chilkat

success = False

socket = chilkat.CkSocket()

#  Connect to the server using TLS.
bTls = True
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
if (success == False):
    print(socket.lastErrorText())
    sys.exit()

#  Perform a nonblocking check for readable data.  Returns True when data or another read-ready
#  condition is present, and False when nothing is immediately available.
bAvailable = socket.PollDataAvailable()
if (bAvailable != True):
    print("No data is immediately available.")
else:
    print("Data is available to read.")