COMPUTER NETWORKS
CONE Lab - Application - Solutions to numerical exercises
Solution
to Problem 8 (by J.F. Kurose and K.W. Ross)
HTTP/1.0:
GET, POST, HEAD.
HTTP/1.1: GET, POST, HEAD, OPTIONS, PUT, DELETE, TRACE, CONNECT.
See RFCs for explanations.
Solution
to Problem 10 (by J.F. Kurose and K.W. Ross)
UIDL abbreviates “unique-ID listing”. When a
POP3 client issues the UIDL command,
the server responds with the unique message ID for all of the messages
present in the
users mailbox. This command is useful for “download and keep”. By keeping
a file that
lists the messages retrieved in earlier sessions, the client can use the
UIDL command to
determine which messages on the server have already been seen.