fix #4071 (#4072)

SPIFFS File object evaluates as true even if the file could not be opened.

fix #4071 (#4072)
SPIFFS File object evaluates as true even if the file could not be opened.
fa8a1c38 · M. Betz · GitHub · d56267bd · fa8a1c38
Unverified Commit fa8a1c38 authored Sep 30, 2020 by M. Betz Committed by GitHub Sep 30, 2020
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libraries/WebServer/src/detail/RequestHandlersImpl.h libraries/WebServer/src/detail/RequestHandlersImpl.h +1 -1

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--- a/libraries/WebServer/src/detail/RequestHandlersImpl.h
+++ b/libraries/WebServer/src/detail/RequestHandlersImpl.h
@@ -113,7 +113,7 @@ public:
        }

        File f = _fs.open(path, "r");
-        if (!f)
+        if (!f || !f.available())
            return false;

        if (_cache_header.length() != 0)