From bb81b1e3d9b10e49e00eb32bf31b80611dce70f6 Mon Sep 17 00:00:00 2001
From: Pieter Hintjens <ph@imatix.com>
Date: Fri, 31 Jan 2014 12:02:42 +0100
Subject: [PATCH] Fixed issue #865 - validation on ZMQ_TCP_KEEPALIVE

---
 src/options.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/options.cpp b/src/options.cpp
index c04b0f9f..3db9e56a 100644
--- a/src/options.cpp
+++ b/src/options.cpp
@@ -206,7 +206,7 @@ int zmq::options_t::setsockopt (int option_, const void *optval_,
             break;
 
         case ZMQ_TCP_KEEPALIVE:
-            if (is_int && (value >= -1 || value <= 1)) {
+            if (is_int && (value == -1 || value == 0 || value == 1)) {
                 tcp_keepalive = value;
                 return 0;
             }