From b75264b98ffa46d22f86f15b2a025d99112c413d Mon Sep 17 00:00:00 2001
From: Benjamin Sergeant <bsergean@gmail.com>
Date: Thu, 9 Jan 2020 13:45:58 -0800
Subject: [PATCH] poll: handle POLLNVAL

---
 ixwebsocket/IXSocket.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ixwebsocket/IXSocket.cpp b/ixwebsocket/IXSocket.cpp
index cd6a2016..18d1ccbb 100644
--- a/ixwebsocket/IXSocket.cpp
+++ b/ixwebsocket/IXSocket.cpp
@@ -59,10 +59,12 @@ namespace ix
         //
         nfds_t nfds = 1;
         struct pollfd fds[2];
-        memset(fds, 0 , sizeof(fds));
+        memset(fds, 0, sizeof(fds));
 
         fds[0].fd = sockfd;
         fds[0].events = (readyToRead) ? POLLIN : POLLOUT;
+
+         // this is ignored by poll, but our select based poll wrapper on Windows needs it
         fds[0].events |= POLLERR;
 
         // File descriptor used to interrupt select when needed
@@ -133,7 +135,8 @@ namespace ix
             }
 #endif
         }
-        else if (sockfd != -1 && (fds[0].revents & POLLERR || fds[0].revents & POLLHUP))
+        else if (sockfd != -1 && (fds[0].revents & POLLERR || fds[0].revents & POLLHUP ||
+                                  fds[0].revents & POLLNVAL))
         {
             pollResult = PollResultType::Error;
         }