IRC - Client -> Server

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Client -> Server

Client to Server communication is simple. Only thing you need to do is send (upper-case) command followed by its' arguments. I will be using following format:

<arg>   = required argument
[arg]   = optional argument
<arg... = required text argument
[arg... = optional text argument

Text arguments starts with : and can contain spaces.

Connection

PASS

PASS <password>
Sent as first command to define access to the server. Multiple may be sent but only last should be considered. Errors:

ERR_NeedMoreParams
ERR_AlreadyRegistred

Example:
PASS super_secret_password

NICK

NICK <nickname>
Used to change (or set first) nickname. Errors:

NoNicknameGiven
NicknameInUse
ErroneusNickname
NickCollision

Example:
NICK FooBar

USER

USER <username> <hostname> <servername> <realname...
Used at beginning of connection to specify username, hostname, servername and realname. <hostname> and <servername> are ignored (used only for Server -> Server communication). It is recommended to use Identity Server (user password server) because there is no prove for username validity. Errors:

NeedMoreParams
AlreadyRegistred

Examples:
USER guest tolmoon tolsun :Ronnie Reagan
USER foobar - - :Foo Bar

SERVER

Used only for Server -> Server communication.

OPER

OPER <user> <password>
Used to gain (server) operator privileges. Errors:

NeedMoreParams
NoOperHost
PasswdMismatch

Reply:

You'reOper

Examples:
OPER foo bar

QUIT

QUIT [message...
Client should send this before leaving. Examples:
QUIT
QUIT :Leaving

SQUIT

Used only for Server -> Server communication. ...

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