From e1667a61eaf2ead637d6ab04979ed77236aabe7a Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 11 Feb 2022 10:41:28 +0100
Subject: [PATCH] wolfssl: return CURLE_AGAIN for the SSL_ERROR_NONE case

Closes #8431
---
 lib/vtls/wolfssl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/vtls/wolfssl.c b/lib/vtls/wolfssl.c
index d44a406b53..1dbf5ecbb5 100644
--- a/lib/vtls/wolfssl.c
+++ b/lib/vtls/wolfssl.c
@@ -923,7 +923,10 @@ static ssize_t wolfssl_recv(struct Curl_easy *data,
     switch(err) {
     case SSL_ERROR_ZERO_RETURN: /* no more data */
       break;
+    case SSL_ERROR_NONE:
+      /* FALLTHROUGH */
     case SSL_ERROR_WANT_READ:
+      /* FALLTHROUGH */
     case SSL_ERROR_WANT_WRITE:
       /* there's data pending, re-invoke SSL_read() */
       *curlcode = CURLE_AGAIN;