From 1b9849c22447f9743294f667c3e7bf96964aff22 Mon Sep 17 00:00:00 2001
From: Babak Farrokhi <babak@farrokhi.net>
Date: Tue, 23 Jan 2018 11:32:40 +0330
Subject: [PATCH] Use more accurate response time measurement method (fixes
 #44)

---
 dnseval.py | 4 +---
 dnsping.py | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/dnseval.py b/dnseval.py
index 90867f2..a53b8dd 100755
--- a/dnseval.py
+++ b/dnseval.py
@@ -156,16 +156,14 @@ def dnsping(host, server, dnsrecord, timeout, count, use_tcp=False, use_edns=Fal
         if shutdown:  # user pressed CTRL+C
             break
         try:
-            stime = time.perf_counter()
             answers = resolver.query(host, dnsrecord, tcp=use_tcp,
                                      raise_on_no_answer=False)  # todo: response validation in future
-            etime = time.perf_counter()
         except (dns.resolver.NoNameservers, dns.resolver.NoAnswer):
             break
         except dns.resolver.Timeout:
             pass
         else:
-            elapsed = (etime - stime) * 1000  # convert to milliseconds
+            elapsed = answers.response.time * 1000  # convert to milliseconds
             response_times.append(elapsed)
 
     r_sent = i + 1
diff --git a/dnsping.py b/dnsping.py
index 50e3943..aec18c7 100755
--- a/dnsping.py
+++ b/dnsping.py
@@ -205,7 +205,7 @@ def main():
                 print("No answer")
             pass
         else:
-            elapsed = (etime - stime) * 1000  # convert to milliseconds
+            elapsed = answers.response.time * 1000  # convert to milliseconds
             response_time.append(elapsed)
             if not quiet:
                 print(