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accept hostname as dns server in file (closes #12)

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This commit is contained in:
Babak Farrokhi 2016-05-07 15:08:15 +04:30
parent 30d2adbb10
commit 6b246a71d3
Signed by: farrokhi
GPG Key ID: 6B267AD85D632E9A
1 changed files with 20 additions and 6 deletions
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26
dnseval.py
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@ -26,8 +26,10 @@
import getopt
import ipaddress
import os
import signal
import socket
import sys
import time
from statistics import stdev
@ -173,14 +175,26 @@ def main():
print('server ', blanks, ' avg(ms) min(ms) max(ms) stddev(ms) lost(%)')
print((60 + width) * '-')
for server in f:
if not server:
continue
(server, r_avg, r_min, r_max, r_stddev, r_lost_percent) = dnsping(hostname, server, dnsrecord, waittime,
count)
# check if we have a valid dns server address
try:
ipaddress.ip_address(server)
except ValueError: # so it is not a valid IPv4 or IPv6 address, so try to resolve host name
try:
s = socket.getaddrinfo(server, port=None)[1][4][0]
except OSError:
print('Error: cannot resolve hostname:', server)
s = None
else:
s = server
server = server.ljust(width + 1)
if not s:
continue
(s, r_avg, r_min, r_max, r_stddev, r_lost_percent) = dnsping(hostname, s, dnsrecord, waittime,
count)
s = server.ljust(width + 1)
print("%s %-8.3f %-8.3f %-8.3f %-8.3f %%%d" % (
server, r_avg, r_min, r_max, r_stddev, r_lost_percent), flush=True)
s, r_avg, r_min, r_max, r_stddev, r_lost_percent), flush=True)
except Exception as e:
print('error: %s' % e)