dispatch not working

[havihu]

Hi,
im trying to capture packets and im using open_live(timeout 0) with dispatch instead of next, and I dont know why but its sniffing only a few packets and then close pip.
my code:

import pcapy
import threading
import time
from pcapy import open_live, PcapError

def parse_eth_packet_hndlr(header, packet):
print('header len:%s\n'%header.getlen())

def start():
try:
packets_reader = open_live('eth2', 200, 0, 0)
except PcapError as e:
if 'That device is not up' in str(e):
logging.debug(e)
return None
try:
print('Try to start capturing packets')
packets_reader.dispatch(-1, parse_eth_packet_hndlr)
except PcapError as e:
return

if name == 'main':
start()

pcapy version:pcapy-0.11.5.dev0
python version: 2.7
please advice

[N7-Revenant]

Hi,
as far as I know, this is expected behaviour: while next process single packet, dispatch allows you to run a callback for all currently available packets, and then it returns. So you need to add a cycle around dispatch call, a while loop for example:

while condition:
    packets_reader.dispatch(-1, parse_eth_packet_hndlr)