Hi Abdullah,
Have you tried to write pkt?
Best/PA
Enviado desde mi iPhone
> El 16 abr 2021, a las 19:36, Soliman Awad Alshra´a Abdullah TU Ilmenau
> <abdullah.alsh...@tu-ilmenau.de> escribió:
>
>
> Hello every one,
>
>
> I am trying to capture Packet_In as pcap file
>
>
>
> from ryu.lib import pcaplib
>
>
> def __init__(self, *args, **kwargs):
> super(SimpleSwitch13, self).__init__(*args, **kwargs)
>
> self.pcap_writer = pcaplib.Writer(open('mypcap.pcap', 'wb'))
>
>
> @set_ev_cls(ofp_event.EventOFPSwitchFeatures, CONFIG_DISPATCHER)
> def switch_features_handler(self, ev):
> .
> .
> if pkt.get_protocol(ipv4.ipv4):
> self.pcap_writer.write_pkt(ev.msg.data)
> self.pktcounter =self.pktcounter+1
>
> Repeatedly, after 100 packet I want to use the pcap file with some tool, but
> the file would not be ready to use until I stop the controller.
>
> therefor, I tried to read the file and save it in another file like
>
> scapy_cap = rdpcap('mypcap.pcap')
> for x in scapy_cap:
> wrpcap('foo.pcap', x)
>
> I got " scapy.error.Scapy_Exception: No data could be read! "
> and I also try somthing like this
>
> for ts, buf in pcaplib.Reader(open('mypcap.pcap', 'rb')):
> pkt = packet.Packet(buf)
> wrpcap('foo.pcap', x)
>
> but I got the next error "TypeError: cannot convert 'ethernet' object to
> bytes"
>
>
> Any advice would be appreciated
> Abdullah
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