From d5b4aa829b1ec92c57f60d1eec01e4d42bd279d4 Mon Sep 17 00:00:00 2001
From: "julian.filter" <julian.filter@rwth-aachen.de>
Date: Thu, 9 Apr 2020 17:10:52 +0200
Subject: [PATCH] Improve util.pmonitor

---
 mininet/util.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mininet/util.py b/mininet/util.py
index 3f6c31c..d724096 100644
--- a/mininet/util.py
+++ b/mininet/util.py
@@ -451,7 +451,7 @@ def pmonitor(popens, timeoutms=500, readline=True,
         fd = popen.stdout.fileno()
         fdToHost[ fd ] = host
         fdToDecoder[ fd ] = getincrementaldecoder()
-        poller.register( fd, POLLIN | POLLHUP )
+        poller.register( fd, POLLIN )
         flags = fcntl( fd, F_GETFL )
         fcntl( fd, F_SETFL, flags | O_NONBLOCK )
     while popens:
@@ -461,7 +461,7 @@ def pmonitor(popens, timeoutms=500, readline=True,
                 host = fdToHost[ fd ]
                 decoder = fdToDecoder[ fd ]
                 popen = popens[ host ]
-                if event & POLLIN or event & POLLHUP:
+                if event & ( POLLIN | POLLHUP ):
                     while True:
                         try:
                             f = popen.stdout