tdϨ`^dZddlddlddlZejdZGddeZy)zThis module implements the TftpPacketFactory class, which can take a binary buffer, and return the appropriate TftpPacket object to represent it, via the parse() method.)*Nztftpy.TftpPacketFactoryc"eZdZdZdZdZdZy)TftpPacketFactoryzThis class generates TftpPacket objects. It is responsible for parsing raw buffers off of the wire and returning objects representing them, via the parse() method.cPtttttt d|_y)N)r) TftpPacketRRQ TftpPacketWRQ TftpPacketDAT TftpPacketACK TftpPacketERRTftpPacketOACKclasses)selfs r2s4 g12""r