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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