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//lib/python3/dist-packages/twisted/pair/test/test_rawudp.py
# Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. # from twisted.trial import unittest from twisted.internet import protocol from twisted.pair import rawudp class MyProtocol(protocol.DatagramProtocol): def __init__(self, expecting): self.expecting = list(expecting) def datagramReceived(self, data, peer): (host, port) = peer assert self.expecting, 'Got a packet when not expecting anymore.' expectData, expectHost, expectPort = self.expecting.pop(0) assert expectData == data, "Expected data %r, got %r" % (expectData, data) assert expectHost == host, "Expected host %r, got %r" % (expectHost, host) assert expectPort == port, "Expected port %d=0x%04x, got %d=0x%04x" % (expectPort, expectPort, port, port) class RawUDPTests(unittest.TestCase): def testPacketParsing(self): proto = rawudp.RawUDPProtocol() p1 = MyProtocol([ (b'foobar', b'testHost', 0x43A2), ]) proto.addProto(0xF00F, p1) proto.datagramReceived(b"\x43\xA2" #source b"\xf0\x0f" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting def testMultiplePackets(self): proto = rawudp.RawUDPProtocol() p1 = MyProtocol([ (b'foobar', b'testHost', 0x43A2), (b'quux', b'otherHost', 0x33FE), ]) proto.addProto(0xF00F, p1) proto.datagramReceived(b"\x43\xA2" #source b"\xf0\x0f" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) proto.datagramReceived(b"\x33\xFE" #source b"\xf0\x0f" #dest b"\x00\x05" #len b"\xDE\xAD" #check b"quux", partial=0, dest=b'dummy', source=b'otherHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting def testMultipleSameProtos(self): proto = rawudp.RawUDPProtocol() p1 = MyProtocol([ (b'foobar', b'testHost', 0x43A2), ]) p2 = MyProtocol([ (b'foobar', b'testHost', 0x43A2), ]) proto.addProto(0xF00F, p1) proto.addProto(0xF00F, p2) proto.datagramReceived(b"\x43\xA2" #source b"\xf0\x0f" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting assert not p2.expecting, \ 'Should not expect any more packets, but still want %r' % p2.expecting def testWrongProtoNotSeen(self): proto = rawudp.RawUDPProtocol() p1 = MyProtocol([]) proto.addProto(1, p1) proto.datagramReceived(b"\x43\xA2" #source b"\xf0\x0f" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) def testDemuxing(self): proto = rawudp.RawUDPProtocol() p1 = MyProtocol([ (b'foobar', b'testHost', 0x43A2), (b'quux', b'otherHost', 0x33FE), ]) proto.addProto(0xF00F, p1) p2 = MyProtocol([ (b'quux', b'otherHost', 0xA401), (b'foobar', b'testHost', 0xA302), ]) proto.addProto(0xB050, p2) proto.datagramReceived(b"\xA4\x01" #source b"\xB0\x50" #dest b"\x00\x05" #len b"\xDE\xAD" #check b"quux", partial=0, dest=b'dummy', source=b'otherHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) proto.datagramReceived(b"\x43\xA2" #source b"\xf0\x0f" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) proto.datagramReceived(b"\x33\xFE" #source b"\xf0\x0f" #dest b"\x00\x05" #len b"\xDE\xAD" #check b"quux", partial=0, dest=b'dummy', source=b'otherHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) proto.datagramReceived(b"\xA3\x02" #source b"\xB0\x50" #dest b"\x00\x06" #len b"\xDE\xAD" #check b"foobar", partial=0, dest=b'dummy', source=b'testHost', protocol=b'dummy', version=b'dummy', ihl=b'dummy', tos=b'dummy', tot_len=b'dummy', fragment_id=b'dummy', fragment_offset=b'dummy', dont_fragment=b'dummy', more_fragments=b'dummy', ttl=b'dummy', ) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting assert not p2.expecting, \ 'Should not expect any more packets, but still want %r' % p2.expecting def testAddingBadProtos_WrongLevel(self): """Adding a wrong level protocol raises an exception.""" e = rawudp.RawUDPProtocol() try: e.addProto(42, "silliness") except TypeError as e: if e.args == ('Added protocol must be an instance of DatagramProtocol',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooSmall(self): """Adding a protocol with a negative number raises an exception.""" e = rawudp.RawUDPProtocol() try: e.addProto(-1, protocol.DatagramProtocol()) except TypeError as e: if e.args == ('Added protocol must be positive or zero',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooBig(self): """Adding a protocol with a number >=2**16 raises an exception.""" e = rawudp.RawUDPProtocol() try: e.addProto(2**16, protocol.DatagramProtocol()) except TypeError as e: if e.args == ('Added protocol must fit in 16 bits',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooBig2(self): """Adding a protocol with a number >=2**16 raises an exception.""" e = rawudp.RawUDPProtocol() try: e.addProto(2**16+1, protocol.DatagramProtocol()) except TypeError as e: if e.args == ('Added protocol must fit in 16 bits',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols')