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This module contains the implementation of the TCP forwarding, which allows
clients and servers to forward arbitrary TCP data across the connection.
Maintainer: Paul Swartz
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Channel used for handling server side forwarding request.
It acts as a client for the remote forwarding destination.
@ivar hostport: C{(host, port)} requested by client as forwarding
destination.
@type hostport: L{tuple} or a C{sequence}
@ivar client: Protocol connected to the forwarding destination.
@type client: L{protocol.Protocol}
@ivar clientBuf: Data received while forwarding channel is not yet
connected.
@type clientBuf: L{bytes}
@var _reactor: Reactor used for TCP connections.
@type _reactor: A reactor.
@ivar _channelOpenDeferred: Deferred used in testing to check the
result of C{channelOpen}.
@type _channelOpenDeferred: L{twisted.internet.defer.Deferred}
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Called when the connection was established to the forwarding
destination.
@param client: Client protocol connected to the forwarding destination.
@type client: L{protocol.Protocol}
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Called when failed to connect to the forwarding destination.
@param reason: Reason why connection failed.
@type reason: L{twisted.python.failure.Failure}
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Pack the data suitable for sending in a CHANNEL_OPEN packet.
@type destination: L{tuple}
@param destination: A tuple of the (host, port) of the destination host.
@type source: L{tuple}
@param source: A tuple of the (host, port) of the source host.
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Pack the data for tcpip forwarding.
@param peer: A tuple of the (host, port) .
@type peer: L{tuple}
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