René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Exception ignored in: 'netfilterqueue.global_callback'","articleBody":"from netfilterqueue import NetfilterQueue\r\nfrom scapy.all import *\r\n\r\ndef print_and_accept(pkt):\r\n    print(pkt)\r\n    pl = IP(pkt.get_payload())\r\n    print(pl.show())\r\n    pl[IP].dst = \"172.17.0.3\"\r\n    del pl[IP].len, pl[IP].chksum, pl[TCP].chksum\r\n    print(\"\u003e\u003e\u003epayload: \",str(pl))\r\n    pkt.set_payload(str(pl))\r\n    hw = pkt.get_hw()\r\n    if hw:\r\n        print(\":\".join(\"{:02x}\".format(c) for c in hw[0:6]))\r\n    pkt.accept()\r\n\r\nnfqueue = NetfilterQueue()\r\nnfqueue.bind(0, print_and_accept)\r\ntry:\r\n    nfqueue.run()\r\nexcept KeyboardInterrupt:\r\n    print('')\r\n\r\nnfqueue.unbind()\r\n\r\nfollowing  is the output:\r\n\r\n###[ IP ]### \r\n  version   = 4\r\n  ihl       = 5\r\n  tos       = 0x0\r\n  len       = 52\r\n  id        = 43486\r\n  flags     = DF\r\n  frag      = 0\r\n  ttl       = 127\r\n  proto     = tcp\r\n  chksum    = 0x2028\r\n  src       = 192.168.197.1\r\n  dst       = 172.17.0.2\r\n  \\options   \\\r\n###[ TCP ]### \r\n     sport     = 10732\r\n     dport     = http\r\n     seq       = 3132586654\r\n     ack       = 0\r\n     dataofs   = 8\r\n     reserved  = 0\r\n     flags     = S\r\n     window    = 64240\r\n     chksum    = 0xe2cf\r\n     urgptr    = 0\r\n     options   = [('MSS', 1460), ('NOP', None), ('WScale', 8), ('NOP', None), ('NOP', None), ('SAckOK', b'')]\r\n\r\nNone\r\n\u003e\u003e\u003epayload:  b'E\\x00\\x004\\xa9\\xde@\\x00\\x7f\\x06 (\\xc0\\xa8\\xc5\\x01\\xac\\x11\\x00\\x03)\\xec\\x00P\\xba\\xb7z\\x9e\\x00\\x00\\x00\\x00\\x80\\x02\\xfa\\xf0\\xe2\\xcf\\x00\\x00\\x02\\x04\\x05\\xb4\\x01\\x03\\x03\\x08\\x01\\x01\\x04\\x02'\r\nException ignored in: 'netfilterqueue.global_callback'\r\nTraceback (most recent call last):\r\n  File \"nfq3.py\", line 10, in print_and_accept\r\n    pkt.set_payload(str(pl))\r\nTypeError: Argument 'payload' has incorrect type (expected bytes, got str)","author":{"url":"https://github.com/jieyoujun","@type":"Person","name":"jieyoujun"},"datePublished":"2019-04-23T13:09:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/50/python-netfilterqueue/issues/50"}