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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