JSch

Hi,

When I run sudo commands on a remote host using the jsch API's  I get the following error.

"sudo: no tty present and no askpass program specified"

But when I set the following pty flag, things work perfectly fine.

((ChannelExec)channel).setPty(false);


Is there any reason why this flag is not set by default. ?
What are the implications if I set this flag in terms of security and performance. ?

thanks,
Prakash