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BUG/MEDIUM: mux-h1: Disable splicing for the conn-stream if read0 is received

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The CS_FL_MAY_SPLICE flag must be unset for the conn-stream if a read0 is
received while reading on the kernel pipe. It is mandatory when some data was
also received. Otherwise, this flag prevent the call to the h1 rcv_buf()
callback. Thus the read0 will never be handled by the h1 multiplexer leading to
a freeze of the session until a timeout is reached.

This patch must be backported to 2.1 and 2.0.
This commit is contained in:
Christopher Faulet 2020-07-07 10:56:40 +02:00
parent 7b7016bf6e
commit a131a8fe93
1 changed files with 2 additions and 1 deletions
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3
src/mux_h1.c
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@ -2805,7 +2805,8 @@ static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int c
TRACE_STATE("read0 on connection", H1_EV_STRM_RECV, cs->conn, h1s);
}
if ((h1m->state != H1_MSG_TUNNEL && h1m->state != H1_MSG_DATA) ||
if ((h1s->flags & H1S_F_REOS) ||
(h1m->state != H1_MSG_TUNNEL && h1m->state != H1_MSG_DATA) ||
(h1m->state == H1_MSG_DATA && !h1m->curr_len))
cs->flags &= ~CS_FL_MAY_SPLICE;