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MINOR: h2: centralize the check for the idle streams

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RFC7540#5.1 is pretty clear : "any frame other than HEADERS or PRIORITY
in this state MUST be treated as a connection error". Instead of dealing
with this for each and every frame type, let's do it once for all in the
main demux loop.
This commit is contained in:
Willy Tarreau 2017-10-30 11:46:49 +01:00
parent e96b0922e9
commit f65b80dd47
1 changed files with 10 additions and 9 deletions
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19
src/mux_h2.c
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@ -1216,10 +1216,6 @@ static int h2c_handle_window_update(struct h2c *h2c, struct h2s *h2s)
if (h2c->dsi != 0) {
/* stream window update */
if (h2s->st == H2_SS_IDLE) {
error = H2_ERR_PROTOCOL_ERROR;
goto conn_err;
}
/* it's not an error to receive WU on a closed stream */
if (h2s->st == H2_SS_CLOSED)
@ -1325,11 +1321,6 @@ static int h2c_handle_rst_stream(struct h2c *h2c, struct h2s *h2s)
goto conn_err;
}
if (h2s->st == H2_SS_IDLE) {
error = H2_ERR_PROTOCOL_ERROR;
goto conn_err;
}
if (h2c->dfl != 4) {
error = H2_ERR_FRAME_SIZE_ERROR;
goto conn_err;
@ -1612,6 +1603,16 @@ static void h2_process_demux(struct h2c *h2c)
/* Only H2_CS_FRAME_P and H2_CS_FRAME_A here */
h2s = h2c_st_by_id(h2c, h2c->dsi);
if (h2s->st == H2_SS_IDLE &&
h2c->dft != H2_FT_HEADERS && h2c->dft != H2_FT_PRIORITY) {
/* RFC7540#5.1: any frame other than HEADERS or PRIORITY in
* this state MUST be treated as a connection error
*/
h2c_error(h2c, H2_ERR_PROTOCOL_ERROR);
h2c->st0 = H2_CS_ERROR;
break;
}
switch (h2c->dft) {
case H2_FT_SETTINGS:
if (h2c->st0 == H2_CS_FRAME_P)