From edb92ee3c75fac5e25723d9e4dd6417f02222cb0 Mon Sep 17 00:00:00 2001
From: Justin Chen <justinchen00@github.invalid.com>
Date: Thu, 14 Apr 2016 21:42:11 +0800
Subject: [PATCH] recv treat zero return as error

https://github.com/warmcat/libwebsockets/issues/475
---
 lib/output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/output.c b/lib/output.c
index 0d850ebe..11f88e82 100644
--- a/lib/output.c
+++ b/lib/output.c
@@ -622,7 +622,7 @@ lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len)
 	int n;
 
 	n = recv(wsi->sock, (char *)buf, len, 0);
-	if (n >= 0)
+	if (n > 0)
 		return n;
 #if LWS_POSIX
 	if (LWS_ERRNO == LWS_EAGAIN ||