12
votes
1answer
510 views

What did network programs use to communicate before sockets was invented (around 1983?)

Sockets were invented in Berkeley around 1983, but how did networked computer programs work before this? These days, pretty much everything uses sockets, so it's hard for me to imagine how else ...
51
votes
4answers
8k views

IPv4 to IPv6. where is IPv5?

As all of us know that after IPv4 it came IPv6. How this transition happened? I just want to know was there any IPv5 also? or there is any other logic in naming this version of IP as IPv6?