BUG/MINOR: mux-h1/mux-fcgi: Sanitize TE header to only send "trailers"
Only chunk-encoded response payloads are supported by HAProxy. All other
transfer encodings are not supported and will be an issue if the HTTP
compression is enabled. So be sure only "trailers" is send in TE request
headers.
The patch is related to the issue #1301. It must be backported to all stable
versions. Be carefull for 2.0 and lower because the HTTP legacy must also be
fixed.
diff --git a/src/mux_h1.c b/src/mux_h1.c
index a627f19..47322cb 100644
--- a/src/mux_h1.c
+++ b/src/mux_h1.c
@@ -1974,6 +1974,15 @@
!(h1m->flags & H1_MF_RESP))) {
ws_key_found = 1;
}
+ else if (isteq(n, ist("te"))) {
+ /* "te" may only be sent with "trailers" if this value
+ * is present, otherwise it must be deleted.
+ */
+ v = istist(v, ist("trailers"));
+ if (!isttest(v) || (v.len > 8 && v.ptr[8] != ','))
+ goto skip_hdr;
+ v = ist("trailers");
+ }
/* Skip header if same name is used to add the server name */
if (!(h1m->flags & H1_MF_RESP) && h1c->px->server_id_hdr_name &&