a bytes-like object is required, not 'str' : TypeError

Question

I'm building a sniffing tool using python-3.7 and i got that error when i was trying to use the scapy_http module.

It works fine in python-2.x. The object type is scapy.layers.l2.Ether

def process(packet):
    if packet.haslayer(http.HTTPResponse):
        print(packet)

> Traceback (most recent call last):   File "sniffer.py", line 13, in
> <module>
>     sniff("wlan0")   File "sniffer.py", line 6, in sniff
>     scapy.sniff(iface=interface, store=False,prn=process)   File "/usr/local/lib/python3.7/dist-packages/scapy/sendrecv.py", line 886,
> in sniff
>     r = prn(p)   File "sniffer.py", line 10, in process
>     print(packet)   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 438, in
> __str__
>     return str(self.build())   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 556, in
> build
>     p = self.do_build()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 541, in
> do_build
>     pay = self.do_build_payload()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 528, in
> do_build_payload
>     return self.payload.do_build()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 541, in
> do_build
>     pay = self.do_build_payload()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 528, in
> do_build_payload
>     return self.payload.do_build()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 541, in
> do_build
>     pay = self.do_build_payload()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 528, in
> do_build_payload
>     return self.payload.do_build()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 541, in
> do_build
>     pay = self.do_build_payload()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 528, in
> do_build_payload
>     return self.payload.do_build()   File "/usr/local/lib/python3.7/dist-packages/scapy/packet.py", line 538, in
> do_build
>     pkt = self.self_build()   File "/usr/local/lib/python3.7/dist-packages/scapy_http/http.py", line 227,
> in self_build
>     return _self_build(self, field_pos_list)   File "/usr/local/lib/python3.7/dist-packages/scapy_http/http.py", line 101,
> in _self_build
>     val = _get_field_value(obj, f.name)   File "/usr/local/lib/python3.7/dist-packages/scapy_http/http.py", line 74,
> in _get_field_value
>     headers = _parse_headers(val)   File "/usr/local/lib/python3.7/dist-packages/scapy_http/http.py", line 18,
> in _parse_headers
>     headers = s.split("\r\n") TypeError: a bytes-like object is required, not 'str'

Answer 1

scapy_http is deprecated (doesn't work with Python 3), and the HTTP module is now included by default in Scapy.

Please upgrade to the GitHub version or the latest RC:

pip install scapy --upgrade --pre