From acb2fd6756834a81679a9906eedb2b043ee087ed Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 20 Aug 2018 23:57:12 +0200
Subject: [PATCH] mbedtls: treat zero return from mbedtls_ssl_read() as
 non-error

Patch-by: jshanab on github
Fixes #2899
---
 lib/vtls/mbedtls.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/vtls/mbedtls.c b/lib/vtls/mbedtls.c
index d7759dc849..209ec74f7e 100644
--- a/lib/vtls/mbedtls.c
+++ b/lib/vtls/mbedtls.c
@@ -795,7 +795,8 @@ static ssize_t mbed_recv(struct connectdata *conn, int num,
   if(ret <= 0) {
     if(ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY)
       return 0;
-
+    else if(!ret)
+      return 0;
     *curlcode = (ret == MBEDTLS_ERR_SSL_WANT_READ) ?
       CURLE_AGAIN : CURLE_RECV_ERROR;
     return -1;
-- 
GitLab