header fragment reject empty early

Signed-off-by: Andy Green <andy.green@linaro.org>

diff --git a/lib/parsers.c b/lib/parsers.c
index d1e84ac..e1fdd24 100644 (file)
--- a/lib/parsers.c
+++ b/lib/parsers.c
@@ -209,6 +209,9 @@ LWS_VISIBLE int lws_hdr_copy_fragment(struct lws *wsi, char *dst, int len,
        int n = 0;
        int f = wsi->u.hdr.ah->frag_index[h];
 
+       if (!f)
+               return -1;
+
        while (n < frag_idx) {
                f = wsi->u.hdr.ah->frags[f].nfrag;
                if (!f)