From aa5fdcf400433f1164f91c4f0a2e3ee8afc1cb6e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Javier=20Jaramago=20Fern=C3=A1ndez?=
 <jaramago.fernandez.javier@gmail.com>
Date: Tue, 26 Jan 2021 01:12:06 +0000
Subject: [PATCH] Fix 3272: 'POLLHUP' should always be check in 'read_from_net'
 to verify socket is still open

---
 lib/mysql_data_stream.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/mysql_data_stream.cpp b/lib/mysql_data_stream.cpp
index d4ca691da0..69c3d6507f 100644
--- a/lib/mysql_data_stream.cpp
+++ b/lib/mysql_data_stream.cpp
@@ -432,6 +432,11 @@ int MySQL_Data_Stream::read_from_net() {
 		//proxy_info("Entering\n");
 	}
 	if ((revents & POLLIN)==0) return 0;
+	if (revents & POLLHUP) {
+		shut_soft();
+		return -1;
+	}
+
 	int r=0;
 	int s=queue_available(queueIN);
 	if (encrypted) {