Tutorial week 3

• Write a TCP DayTime server. Try to get your client to work with someone-else's server and vice versa
• Modify the sequential Echo server to timeout each client after 10 seconds of inactivity. Change the exception handling code for handleSocket() so that it can distinguish timeouts from other exceptions
• Modify the concurrent Echo server to log all messages sent to it, recording the hostname and message. Hint: use a PrintStream object (which uses a File object) which is shared by all threads, and use this object to synchronise writes
• The time protocol (IETF RFC 868, http://www.faqs.org/rfcs/rfc868.html) returns the elapsed time as a 32-bit integer, which is the number of seconds since 1 January, 1900. The specification gives the time as a signed integer. No implementation has ever followed this specification as they all return an unsigned integer.
  • If a signed integer was returned, what is the last date that could be given?
  • Write a client to access this service. This service should be running on port 37 of jan.newmarch.name