Unified hello handling with chat server requirements #35
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I made two changes to the handleHello function, so that it works as specified in the lab manual, in particular it did not fulfill
PR6 and PR4.
PR6: If a user that has already logged in attempts to send a HELLO-FROM log-in request, the server must respond with a BAD-RQST-HDR message.
PR4: If a user logs in with an invalid username, the server must send a BAD-RQST-BODY message in response.
the change to meet pr6 is necessary to allow the client to retransmit HELLO-FROM and get a suitable acknowledgement if the first HELLO they received was corrupted.
VUnetid= tfr216