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BUG/MINOR: h2: correctly check for H2_SF_ES_SENT before closing

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In h2_shutw() we must not send another empty frame (nor RST) after
one has been sent, as the stream is already in HLOC/CLOSED state.
This commit is contained in:
Willy Tarreau 2017-11-07 14:41:09 +01:00
parent 6d8b682f9a
commit 58e3208714
1 changed files with 13 additions and 8 deletions
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21
src/mux_h2.c
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@ -2249,8 +2249,16 @@ static void h2_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
return;
if (h2s->flags & H2_SF_HEADERS_SENT) {
if (h2_send_empty_data_es(h2s) <= 0)
/* we can cleanly close using an empty data frame only after headers */
if (!(h2s->flags & (H2_SF_ES_SENT|H2_SF_RST_SENT)) &&
h2_send_empty_data_es(h2s) <= 0)
return;
if (h2s->st == H2_SS_HREM)
h2s->st = H2_SS_CLOSED;
else
h2s->st = H2_SS_HLOC;
} else {
/* let's signal a wish to close the connection if no headers
* were seen as this usually means it's a tcp-request rule which
@ -2260,18 +2268,15 @@ static void h2_shutw(struct conn_stream *cs, enum cs_shw_mode mode)
h2c_send_goaway_error(h2s->h2c, h2s) <= 0)
return;
if (h2c_send_rst_stream(h2s->h2c, h2s) <= 0)
if (!(h2s->flags & H2_SF_RST_SENT) &&
h2c_send_rst_stream(h2s->h2c, h2s) <= 0)
return;
h2s->st = H2_SS_CLOSED;
}
if (h2s->h2c->mbuf->o && !(cs->conn->flags & CO_FL_XPRT_WR_ENA))
conn_xprt_want_send(cs->conn);
if (h2s->st == H2_SS_OPEN && !(h2s->flags & H2_SF_RST_SENT))
h2s->st = H2_SS_HLOC;
else
h2s->st = H2_SS_CLOSED;
}
/* Decode the payload of a HEADERS frame and produce the equivalent HTTP/1