State of PTY is not maintained when reopening the old PTY process

[vikramaditya-singh]

Mentioned below is steps to replicate the issue:
a) Commented 'socket' disconnect code to disable killing of PTY process
b) Added code to save pty.fork(...) object in an array to get the last PTY process for the user
b) put session timeout in config file to any value, say 300000
c) Restart TTY application
d) Open a PTY session in the browser.
e) Type few commands
d) Disconnect the network and reconnect it within 300000 milliseconds (5mins)
e) Open the terminal again
f) Session is maintained and same PTY process is up, but the executed commands are lost.(Not visible in PTY)

Do you have the solution to retain the state of PTY process so that last executed commands and its output is visible too?