Channel Scope

RFC 2811: Internet Relay Chat: Channel management
2.2 Channel Scope


   A channel entity is known by one or more servers on the IRC network.
   A user can only become member of a channel known by the server to
   which the user is directly connected.  The list of servers which know
   of the existence of a particular channel MUST be a contiguous part of
   the IRC network, in order for the messages addressed to the channel
   to be sent to all the channel members.

   Channels with '&' as prefix are local to the server where they are
   created.

   Other channels are known to one (1) or more servers that are
   connected to the network, depending on the channel mask:

      If there is no channel mask, then the channel is known to all
      the servers.

      If there is a channel mask, then the channel MUST only be known
      to servers which has a local user on the channel, and to its
      neighbours if the mask matches both the local and neighbouring
      server names.  Since other servers have absolutely no knowledge of
      the existence of such a channel, the area formed by the servers
      having a name matching the mask has to be contiguous for the
      channel to be known by all these servers.  Channel masks are best
      used in conjunction with server hostmasking [IRC-SERVER].




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2.2 Channel Scope

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