This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
One can install a sniffer in the network between the both machines and read all sent/received bytes. In for example a proxy, firewall, router or even your own machine. SSL encrypts those bytes before sending and decrypts them before reading.