BUG/MINOR: mux-h1: Don't read data from a pipe if the mux is unable to receive
In h1_rcv_pipe(), if the mux is unable to receive data, for instance because the
multiplexer is blocked on input waiting the other side (BUSY mode), no receive
must be performed.
This patch must be backported to 2.1 and 2.0.
diff --git a/src/mux_h1.c b/src/mux_h1.c
index a6dffeb..7aa448c 100644
--- a/src/mux_h1.c
+++ b/src/mux_h1.c
@@ -2781,6 +2781,12 @@
h1s->flags &= ~H1S_F_BUF_FLUSH;
h1s->flags |= H1S_F_SPLICED_DATA;
TRACE_STATE("enable splicing", H1_EV_STRM_RECV, cs->conn, h1s);
+
+ if (!h1_recv_allowed(h1s->h1c)) {
+ TRACE_DEVEL("leaving on !recv_allowed", H1_EV_STRM_RECV, cs->conn, h1s);
+ goto end;
+ }
+
if (h1m->state == H1_MSG_DATA && count > h1m->curr_len)
count = h1m->curr_len;
ret = cs->conn->xprt->rcv_pipe(cs->conn, cs->conn->xprt_ctx, pipe, count);