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Packet handling
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Implementation of the base SSH packet protocol.
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Set the Python log object to use for logging.
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Switch outbound data cipher.
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Switch inbound data cipher.
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Returns ``True`` if a new set of keys needs to be negotiated. This
will be triggered during a packet read or write, so it should be
checked after every read or write, or at least after every few.
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Turn on/off the callback keepalive. If ``interval`` seconds pass with
no data read from or written to the socket, the callback will be
executed and the timer will be reset.
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Tells `Packetizer` that the handshake process started.
Starts a book keeping timer that can signal a timeout in the
handshake process.
:param float timeout: amount of seconds to wait before timing out
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Checks if the handshake has timed out.
If `start_handshake` wasn't called before the call to this function,
the return value will always be `False`. If the handshake completed
before a timeout was reached, the return value will be `False`
:return: handshake time out status, as a `bool`
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Tells `Packetizer` that the handshake has completed.
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Read as close to N bytes as possible, blocking as long as necessary.
:param int n: number of bytes to read
:return: the data read, as a `str`
:raises EOFError:
if the socket was closed before all the bytes could be read
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Read a line from the socket. We assume no data is pending after the
line, so it's okay to attempt large reads.
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Write a block of data using the current cipher, as an SSH block.
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Only one thread should ever be in this function (no other locking is
done).
:raises SSHException: if the packet is mangled
:raises NeedRekeyException: if the transport should rekey
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