do not relay empty chunks, they look like EOF in chunked encoding

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/relay.c b/relay.c
index 5de5cb4..ba6b95a 100644 (file)
--- a/relay.c
+++ b/relay.c
@@ -130,6 +130,9 @@ static void relay_read_cb(struct ustream *s, int bytes)
        }
 
        buf = ustream_get_read_buf(s, &len);
+       if (!buf || !len)
+               return;
+
        uh_chunk_write(cl, buf, len);
        ustream_consume(s, len);
 }