twisted.protocols.basic.LineReceiver

class documentation

class LineReceiver(protocol.Protocol, _PauseableMixin): (source)

Known subclasses: twisted.conch.scripts.cftp.StdioClient, twisted.conch.telnet.StatefulTelnetProtocol, twisted.internet.testing.LineSendingProtocol, twisted.mail.imap4.IMAP4Client, twisted.mail.imap4.IMAP4Server, twisted.mail.smtp.SMTPClient, twisted.positioning.nmea.NMEAProtocol, twisted.protocols.finger.Finger, twisted.protocols.ftp.FTP, twisted.protocols.ftp.FTPClientBasic, twisted.protocols.ftp.FTPFileListProtocol, twisted.protocols.ftp.FTPOverflowProtocol, twisted.protocols.memcache.MemCacheProtocol, twisted.protocols.postfix.PostfixTCPMapServer, twisted.protocols.sip.MessagesParser, twisted.runner.procmon.LineLogger, twisted.web._newclient.HTTPParser, twisted.web.http.HTTPChannel, twisted.web.http.HTTPClient, twisted.words.protocols.irc.DccChat, twisted.words.protocols.irc.IRCClient

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A protocol that receives lines and/or raw data, depending on mode.

In line mode, each line that's received becomes a callback to lineReceived. In raw data mode, each chunk of raw data becomes a callback to LineReceiver.rawDataReceived. The setLineMode and setRawMode methods switch between the two modes.

This is useful for line-oriented protocols such as IRC, HTTP, POP, etc.

Method clearLineBuffer Clear buffered data.
Method dataReceived Protocol.dataReceived. Translates bytes into lines, and calls lineReceived (or rawDataReceived, depending on mode.)
Method lineLengthExceeded Called when the maximum line length has been reached. Override if it needs to be dealt with in some special way.
Method lineReceived Override this for when each line is received.
Method rawDataReceived Override this for when raw data is received.
Method sendLine Sends a line to the other end of the connection.
Method setLineMode Sets the line-mode of this receiver.
Method setRawMode Sets the raw mode of this receiver. Further data received will be sent to rawDataReceived rather than lineReceived.
Constant MAX_LENGTH The maximum length of a line to allow (If a sent line is longer than this, the connection is dropped). Default is 16384.
Class Variable delimiter The line-ending delimiter to use. By default this is b'\r\n'.
Instance Variable line_mode Undocumented
Instance Variable _buffer Undocumented
Instance Variable _busyReceiving Undocumented

Inherited from Protocol:

Method connectionLost Called when the connection is shut down.
Method logPrefix Return a prefix matching the class name, to identify log messages related to this protocol instance.
Class Variable factory Undocumented

Inherited from BaseProtocol (via Protocol):

Method connectionMade Called when a connection is made.
Method makeConnection Make a connection to a transport and a server.
Instance Variable connected Undocumented
Instance Variable transport Undocumented

Inherited from _PauseableMixin (via Protocol, BaseProtocol):

Method pauseProducing Undocumented
Method resumeProducing Undocumented
Method stopProducing Undocumented
Instance Variable paused Undocumented
def clearLineBuffer(self): (source)

Clear buffered data.

Returns
bytesAll of the cleared buffered data.
def dataReceived(self, data): (source)
from twisted.internet.interfaces.IProtocol
overrides twisted.internet.protocol.Protocol.dataReceived
overridden in twisted.protocols.sip.MessagesParser, twisted.web._newclient.HTTPClientParser, twisted.web.http.HTTPChannel, twisted.words.protocols.irc.DccChat, twisted.words.protocols.irc.IRCClient

Protocol.dataReceived. Translates bytes into lines, and calls lineReceived (or rawDataReceived, depending on mode.)

def lineLengthExceeded(self, line): (source)
overridden in twisted.protocols.sip.MessagesParser

Called when the maximum line length has been reached. Override if it needs to be dealt with in some special way.

The argument 'line' contains the remainder of the buffer, starting with (at least some part) of the line which is too long. This may be more than one line, or may be only the initial portion of the line.

def lineReceived(self, line): (source)
overridden in twisted.conch.scripts.cftp.StdioClient, twisted.conch.telnet.StatefulTelnetProtocol, twisted.internet.testing.LineSendingProtocol, twisted.mail.imap4.IMAP4Client, twisted.mail.imap4.IMAP4Server, twisted.mail.smtp.SMTPClient, twisted.positioning.nmea.NMEAProtocol, twisted.protocols.finger.Finger, twisted.protocols.ftp.FTP, twisted.protocols.ftp.FTPClientBasic, twisted.protocols.ftp.FTPFileListProtocol, twisted.protocols.memcache.MemCacheProtocol, twisted.protocols.postfix.PostfixTCPMapServer, twisted.protocols.sip.MessagesParser, twisted.runner.procmon.LineLogger, twisted.web._newclient.HTTPParser, twisted.web.http.HTTPChannel, twisted.web.http.HTTPClient, twisted.words.protocols.irc.DccChat, twisted.words.protocols.irc.IRCClient

Override this for when each line is received.

Parameters
line:bytesThe line which was received with the delimiter removed.
def rawDataReceived(self, data): (source)
overridden in twisted.mail.imap4.IMAP4Client, twisted.mail.imap4.IMAP4Server, twisted.protocols.memcache.MemCacheProtocol, twisted.protocols.sip.MessagesParser, twisted.web._newclient.HTTPParser, twisted.web.http.HTTPChannel, twisted.web.http.HTTPClient

Override this for when raw data is received.

def sendLine(self, line): (source)
overridden in twisted.mail.smtp.SMTPClient, twisted.protocols.ftp.FTP, twisted.protocols.ftp.FTPClientBasic, twisted.protocols.memcache.MemCacheProtocol, twisted.words.protocols.irc.IRCClient

Sends a line to the other end of the connection.

Parameters
line:bytesThe line to send, not including the delimiter.
def setLineMode(self, extra=b''): (source)

Sets the line-mode of this receiver.

If you are calling this from a rawDataReceived callback, you can pass in extra unhandled data, and that data will be parsed for lines. Further data received will be sent to lineReceived rather than rawDataReceived.

Do not pass extra data if calling this function from within a lineReceived callback.

def setRawMode(self): (source)

Sets the raw mode of this receiver. Further data received will be sent to rawDataReceived rather than lineReceived.

MAX_LENGTH: int = (source)
overridden in twisted.web.http.HTTPChannel

The maximum length of a line to allow (If a sent line is longer than this, the connection is dropped). Default is 16384.

Value
16384
delimiter: bytes = (source)
overridden in twisted.conch.scripts.cftp.StdioClient, twisted.conch.telnet.StatefulTelnetProtocol, twisted.protocols.ftp.FTPFileListProtocol, twisted.protocols.postfix.PostfixTCPMapServer, twisted.runner.procmon.LineLogger, twisted.web._newclient.HTTPParser, twisted.words.protocols.irc.DccChat, twisted.words.protocols.irc.IRCClient

The line-ending delimiter to use. By default this is b'\r\n'.

line_mode: int = (source)

Undocumented

_buffer: bytes = (source)

Undocumented

_busyReceiving: bool = (source)

Undocumented