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MINOR: sample: add bc_http_major

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This adds the sample fetch bc_http_major. It returns the backend connection's HTTP
version encoding, which may be 1 for HTTP/0.9 to HTTP/1.1 or 2 for HTTP/2.0. It is
based on the on-wire encoding, and not the version present in the request header.
This commit is contained in:
Jrme Magnin 2018-12-07 09:03:11 +01:00 committed by Willy Tarreau
parent 4468f1cacb
commit 8657742092
2 changed files with 8 additions and 1 deletions
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5
doc/configuration.txt
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@ -14352,6 +14352,11 @@ table may be specified with the "sc*" form, in which case the currently
tracked key will be looked up into this alternate table instead of the table
currently being tracked.
bc_http_major: integer
Returns the backend connection's HTTP major version encoding, which may be 1
for HTTP/0.9 to HTTP/1.1 or 2 for HTTP/2. Note, this is based on the on-wire
encoding and not the version present in the request header.
be_id : integer
Returns an integer containing the current backend's id. It can be used in
frontends with responses to check which backend processed the request.

4
src/connection.c
View File

@ -1258,7 +1258,8 @@ int make_proxy_line_v2(char *buf, int buf_len, struct server *srv, struct connec
static int
smp_fetch_fc_http_major(const struct arg *args, struct sample *smp, const char *kw, void *private)
{
struct connection *conn = objt_conn(smp->sess->origin);
struct connection *conn = (kw[0] != 'b') ? objt_conn(smp->sess->origin) :
smp->strm ? cs_conn(objt_cs(smp->strm->si[1].end)) : NULL;
smp->data.type = SMP_T_SINT;
smp->data.u.sint = (conn && strcmp(conn_get_mux_name(conn), "H2") == 0) ? 2 : 1;
@ -1293,6 +1294,7 @@ int smp_fetch_fc_rcvd_proxy(const struct arg *args, struct sample *smp, const ch
*/
static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
{ "fc_http_major", smp_fetch_fc_http_major, 0, NULL, SMP_T_SINT, SMP_USE_L4CLI },
{ "bc_http_major", smp_fetch_fc_http_major, 0, NULL, SMP_T_SINT, SMP_USE_L4SRV },
{ "fc_rcvd_proxy", smp_fetch_fc_rcvd_proxy, 0, NULL, SMP_T_BOOL, SMP_USE_L4CLI },
{ /* END */ },
}};