Ruby

Check the IMAP Socket Connection

Demonstrates the Chilkat Imap.CheckConnection method, which checks whether the underlying TCP socket is currently connected to the IMAP server. This performs a low-level socket-state check and does not send an IMAP command. This example connects and checks the socket.

Background: CheckConnection sits between the cached IsConnected and a full protocol round trip: it inspects the actual socket without sending an IMAP command, so it can catch a locally-closed socket that the cached flag would miss. It still cannot detect every half-open connection, though — only a real command like Noop that expects a server reply proves the session is genuinely alive end to end.

Chilkat Ruby Downloads

Download Chilkat for Ruby

Ruby

require 'chilkat'

success = false

#  Demonstrates the Imap.CheckConnection method, which checks whether the underlying TCP
#  socket is currently connected to the IMAP server.  This is a low-level socket-state check
#  and does not send an IMAP command.

imap = Chilkat::CkImap.new()

imap.put_Ssl(true)
imap.put_Port(993)

success = imap.Connect("imap.example.com")
if (success == false)
    print imap.lastErrorText() + "\n";
    exit
end

#  Perform a low-level check of the socket connection state.
stillConnected = imap.CheckConnection()
if (stillConnected == true)
    print "The socket is still connected." + "\n";
else
    print "The socket is no longer connected." + "\n";
end

success = imap.Disconnect()
if (success == false)
    print imap.lastErrorText() + "\n";
    exit
end