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BUG/MEDIUM: h2: don't try to parse incomplete H1 responses

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This situation which must not happen does in fact happen when feeding
artificial responses using errorfiles, Lua or an applet. For now it
causes the H1 response parser to loop forever trying to get a more
complete response. Since it cannot progress, let's return an error.
This commit is contained in:
Willy Tarreau 2017-11-02 15:14:19 +01:00
parent fccf840cdf
commit f13ef96e70
1 changed files with 4 additions and 4 deletions
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8
src/mux_h2.c
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@ -2552,10 +2552,10 @@ static int h2s_frt_make_resp_headers(struct h2s *h2s, struct buffer *buf)
ret = h1_headers_to_hdr_list(bo_ptr(buf), bo_ptr(buf) + buf->o,
list, sizeof(list)/sizeof(list[0]), h1m);
if (ret <= 0) {
if (!ret)
goto end; // missing input
/* Impossible to index the response.
/* incomplete or invalid response, this is abnormal coming from
* haproxy and may only result in a bad errorfile or bad Lua code
* so that won't be fixed, raise an error now.
*
* FIXME: we should instead add the ability to only return a
* 502 bad gateway. But in theory this is not supposed to
* happen.