...listen to me very carefully, please!

The moment you press "Post Message" your message is sent to the server. What you are waiting for is confirmation. The server doesn't care if you get the confirmation. Your message is already posted. If you decide there was an error and hit the stop button real quick, and don't get the confirmation, it doesn't matter. Your message was already posted. If it takes a week to get confirmation, your message was already posted. If you give up waiting for confirmation, hit the stop button, log off, and go to bed, your message was already posted.

Any questions?