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BUG/MINOR: mux-h2: mark end-of-stream after processing response HEADERS, not before

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When dealing with a server's H2 response, we used to set the
end-of-stream flag on the conn_stream and the stream before parsing
the response, which is incorrect since we can fail to process this
response by lack of room, buffer or anything. The extend of this problem
is still limited to a few rare cases, but with trailers it will cause a
systematic failure.

This fix must be backported to 1.9.
This commit is contained in:
Willy Tarreau 2019-01-03 09:32:20 +01:00
parent c1fc95f850
commit 45ffc0ca34
1 changed files with 5 additions and 5 deletions
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10
src/mux_h2.c
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@ -1954,11 +1954,6 @@ static struct h2s *h2c_bck_handle_headers(struct h2c *h2c, struct h2s *h2s)
if (b_data(&h2c->dbuf) < h2c->dfl && !b_full(&h2c->dbuf))
return NULL; // incomplete frame
if (h2c->dff & H2_F_HEADERS_END_STREAM) {
h2s->flags |= H2_SF_ES_RCVD;
h2s->cs->flags |= CS_FL_REOS;
}
if (!h2c_decode_headers(h2c, &h2s->rxbuf, &h2s->flags))
return NULL;
@ -1970,6 +1965,11 @@ static struct h2s *h2c_bck_handle_headers(struct h2c *h2c, struct h2s *h2s)
h2c->st0 = H2_CS_FRAME_E;
}
if (h2c->dff & H2_F_HEADERS_END_STREAM) {
h2s->flags |= H2_SF_ES_RCVD;
h2s->cs->flags |= CS_FL_REOS;
}
if (h2s->cs->flags & CS_FL_ERROR && h2s->st < H2_SS_ERROR)
h2s->st = H2_SS_ERROR;
else if (h2s->cs->flags & CS_FL_REOS && h2s->st == H2_SS_OPEN)