irc_channel

irc_channel

IRCChannel — IRC adapter using stdlib socket.

Classes

IRCChannel

IRCChannel(
    server: str = "",
    *,
    port: int = 6667,
    nick: str = "",
    password: str = "",
    use_tls: bool = False,
    bus: Optional[EventBus] = None,
)

Bases: BaseChannel

IRC channel adapter using stdlib socket (send-only).

PARAMETER	DESCRIPTION
server	IRC server hostname. Falls back to IRC_SERVER env var. TYPE: str DEFAULT: ''
port	IRC server port (default 6667). Falls back to IRC_PORT env var. TYPE: int DEFAULT: 6667
nick	IRC nickname. Falls back to IRC_NICK env var. TYPE: str DEFAULT: ''
password	Optional server password. Falls back to IRC_PASSWORD env var. TYPE: str DEFAULT: ''
use_tls	Whether to use TLS for the connection (default False). TYPE: bool DEFAULT: False
bus	Optional event bus for publishing channel events. TYPE: Optional[EventBus] DEFAULT: None

Source code in src/diapason/channels/irc_channel.py

def __init__(
    self,
    server: str = "",
    *,
    port: int = 6667,
    nick: str = "",
    password: str = "",
    use_tls: bool = False,
    bus: Optional[EventBus] = None,
) -> None:
    self._server = server or os.environ.get("IRC_SERVER", "")
    self._port = int(os.environ.get("IRC_PORT", str(port)))
    self._nick = nick or os.environ.get("IRC_NICK", "")
    self._password = password or os.environ.get("IRC_PASSWORD", "")
    self._use_tls = use_tls
    self._bus = bus
    self._handlers: List[ChannelHandler] = []
    self._status = ChannelStatus.DISCONNECTED

Methods:

connect

connect() -> None

Mark as connected (send-only — no persistent connection).

Source code in src/diapason/channels/irc_channel.py

def connect(self) -> None:
    """Mark as connected (send-only — no persistent connection)."""
    if not self._server:
        logger.warning("No IRC server configured")
        self._status = ChannelStatus.ERROR
        return
    if not self._nick:
        logger.warning("No IRC nick configured")
        self._status = ChannelStatus.ERROR
        return
    self._status = ChannelStatus.CONNECTED

disconnect

disconnect() -> None

Mark as disconnected.

Source code in src/diapason/channels/irc_channel.py

def disconnect(self) -> None:
    """Mark as disconnected."""
    self._status = ChannelStatus.DISCONNECTED

send

send(
    channel: str,
    content: str,
    *,
    conversation_id: str = "",
    metadata: Dict[str, Any] | None = None,
) -> bool

Send a PRIVMSG to an IRC channel via a new socket connection.

Source code in src/diapason/channels/irc_channel.py

def send(
    self,
    channel: str,
    content: str,
    *,
    conversation_id: str = "",
    metadata: Dict[str, Any] | None = None,
) -> bool:
    """Send a PRIVMSG to an IRC channel via a new socket connection."""
    if not self._server or not self._nick:
        logger.warning("Cannot send: IRC server or nick not configured")
        return False

    try:
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        if self._use_tls:
            ctx = ssl.create_default_context()
            sock = ctx.wrap_socket(sock, server_hostname=self._server)

        sock.connect((self._server, self._port))

        if self._password:
            sock.sendall(f"PASS {self._password}\r\n".encode())
        sock.sendall(f"NICK {self._nick}\r\n".encode())
        sock.sendall(f"USER {self._nick} 0 * :{self._nick}\r\n".encode())
        sock.sendall(f"PRIVMSG {channel} :{content}\r\n".encode())
        sock.sendall(b"QUIT\r\n")
        sock.close()

        self._publish_sent(channel, content, conversation_id)
        return True
    except Exception:
        logger.debug("IRC send failed", exc_info=True)
        return False

status

status() -> ChannelStatus

Return the current connection status.

Source code in src/diapason/channels/irc_channel.py

def status(self) -> ChannelStatus:
    """Return the current connection status."""
    return self._status

list_channels

list_channels() -> List[str]

Return available channel identifiers.

Source code in src/diapason/channels/irc_channel.py

def list_channels(self) -> List[str]:
    """Return available channel identifiers."""
    return ["irc"]

on_message

on_message(handler: ChannelHandler) -> None

Register a callback for incoming messages.

Source code in src/diapason/channels/irc_channel.py

def on_message(self, handler: ChannelHandler) -> None:
    """Register a callback for incoming messages."""
    self._handlers.append(handler)