From 44f5a4dbc8272bd236d6eb82bc70d71f19e622be Mon Sep 17 00:00:00 2001
From: me-no-dev <hristo@espressif.com>
Date: Mon, 16 Jul 2018 20:08:27 +0200
Subject: [PATCH] Fix Client returning disconnected because of VFS errors

---
 libraries/WiFi/src/WiFiClient.cpp | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/libraries/WiFi/src/WiFiClient.cpp b/libraries/WiFi/src/WiFiClient.cpp
index ddd9fd7c..845f2b4d 100644
--- a/libraries/WiFi/src/WiFiClient.cpp
+++ b/libraries/WiFi/src/WiFiClient.cpp
@@ -438,9 +438,23 @@ uint8_t WiFiClient::connected()
     if (_connected) {
         uint8_t dummy;
         int res = recv(fd(), &dummy, 0, MSG_DONTWAIT);
-        if (res <= 0 && errno != EWOULDBLOCK) {
-            _connected = false;
-            log_i("Disconnected: RES: %d, ERR: %d", res, errno);
+        switch (errno) {
+            case EWOULDBLOCK:
+            case ENOENT: //caused by vfs
+                _connected = true;
+                break;
+            case ENOTCONN:
+            case EPIPE:
+            case ECONNRESET:
+            case ECONNREFUSED:
+            case ECONNABORTED:
+                _connected = false;
+                log_d("Disconnected: RES: %d, ERR: %d", res, errno);
+                break;
+            default:
+                log_i("Unexpected: RES: %d, ERR: %d", res, errno);
+                _connected = true;
+                break;
         }
     }
     return _connected;