Nick message

RFC 1459: Internet Relay Chat / 4. Message details / 4.1 Connection Registration
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4.1.2 Nick message


      Command: NICK
   Parameters: <nickname> [ <hopcount> ]

   NICK message is used to give user a nickname or change the previous
   one.  The <hopcount> parameter is only used by servers to indicate
   how far away a nick is from its home server.  A local connection has
   a hopcount of 0.  If supplied by a client, it must be ignored.

   If a NICK message arrives at a server which already knows about an
   identical nickname for another client, a nickname collision occurs.
   As a result of a nickname collision, all instances of the nickname
   are removed from the server's database, and a KILL command is issued
   to remove the nickname from all other server's database. If the NICK
   message causing the collision was a nickname change, then the
   original (old) nick must be removed as well.

   If the server recieves an identical NICK from a client which is
   directly connected, it may issue an ERR_NICKCOLLISION to the local
   client, drop the NICK command, and not generate any kills.
   Numeric Replies:

           ERR_NONICKNAMEGIVEN             ERR_ERRONEUSNICKNAME
           ERR_NICKNAMEINUSE               ERR_NICKCOLLISION

   Example:

   NICK Wiz                        ; Introducing new nick "Wiz".

   :WiZ NICK Kilroy                ; WiZ changed his nickname to Kilroy.




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4.1.2 Nick message

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