From d7b96f478bd24f75b093a05e52131cf754ab7cd4 Mon Sep 17 00:00:00 2001
From: Yuriy Glukhov <yglukhov@users.noreply.github.com>
Date: Wed, 1 Nov 2017 11:16:44 +0200
Subject: [PATCH] Fixed crash in case of ssl error in SSLShutdown (#6662)

---
 lib/pure/net.nim | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/pure/net.nim b/lib/pure/net.nim
index 215a301b66..a405ce1bda 100644
--- a/lib/pure/net.nim
+++ b/lib/pure/net.nim
@@ -857,13 +857,16 @@ proc close*(socket: Socket) =
         # shutdown i.e not wait for the peers "close notify" alert with a second
         # call to SSLShutdown
         let res = SSLShutdown(socket.sslHandle)
-        SSLFree(socket.sslHandle)
-        socket.sslHandle = nil
         if res == 0:
           discard
         elif res != 1:
           socketError(socket, res)
   finally:
+    when defineSsl:
+      if socket.isSSL and socket.sslHandle != nil:
+        SSLFree(socket.sslHandle)
+        socket.sslHandle = nil
+
     socket.fd.close()
 
 proc toCInt*(opt: SOBool): cint =