(Ruby) Bind and Listen on a Randomly Selected Unused Port

Demonstrates how to bind and listen on a randomly selected unused port.

Note:The ListenPort property used in this example is available starting in Chilkat v9.5.0.59.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

listenSocket = Chilkat::CkSocket.new()

# Pass a value of 0 for the port number to randomly select
# an unused port.
# (The 2nd argument allows for a backlog of 25 pending connection requests when accepting connections.)
success = listenSocket.BindAndListen(5555,25)
if (success != true)
    print listenSocket.lastErrorText() + "\n";
    exit
end

# Find out what port was chosen.
# Note: The ListenPort propety was added in Chilkat v9.5.0.59
listenPort = listenSocket.get_ListenPort()
print "Chosen listen port = " + listenPort.to_s() + "\n";