def encapsulate(self, source, destination, payload):
"""
Construct an ethernet frame containing an ip datagram containing a udp
datagram containing the given application-level payload.
@param source: The source port for the UDP datagram being encapsulated.
@type source: L{int}
@param destination: The destination port for the UDP datagram being
encapsulated.
@type destination: L{int}
@param payload: The application data to include in the udp datagram.
@type payload: L{bytes}
@return: An ethernet frame.
@rtype: L{bytes}
"""
tun = TunHelper(self.tunnelRemote, self.tunnelLocal)
ip = tun.encapsulate(source, destination, payload)
frame = _ethernet(
src=b'\x00\x00\x00\x00\x00\x00', dst=b'\xff\xff\xff\xff\xff\xff',
protocol=_IPv4, payload=ip)
if self.pi:
# Going to send a datagram using IPv4 addressing
protocol = _IPv4
# There are no flags though
flags = 0
frame = _H(flags) + _H(protocol) + frame
return frame
def encapsulate(self, source, destination, payload):
"""
Construct an ethernet frame containing an ip datagram containing a udp
datagram containing the given application-level payload.
@param source: The source port for the UDP datagram being encapsulated.
@type source: L{int}
@param destination: The destination port for the UDP datagram being
encapsulated.
@type destination: L{int}
@param payload: The application data to include in the udp datagram.
@type payload: L{bytes}
@return: An ethernet frame.
@rtype: L{bytes}
"""
tun = TunHelper(self.tunnelRemote, self.tunnelLocal)
ip = tun.encapsulate(source, destination, payload)
frame = _ethernet(
src='\x00\x00\x00\x00\x00\x00', dst='\xff\xff\xff\xff\xff\xff',
protocol=_IPv4, payload=ip)
if self.pi:
# Going to send a datagram using IPv4 addressing
protocol = _IPv4
# There are no flags though
flags = 0
frame = _H(flags) + _H(protocol) + frame
return frame