Ruby

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.

Chilkat Ruby Downloads

Download Chilkat for Ruby

Ruby

require 'chilkat'

success = false

socket = Chilkat::CkSocket.new()

#  Connect to the server using TLS.
bTls = true
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
if (success == false)
    print socket.lastErrorText() + "\n";
    exit
end

#  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." + "\n";
else
    print "Data is available to read." + "\n";
end