MINOR: cfgparse: enforce QUIC MUX compat on server line

Add postparsing checks to control server line conformity regarding QUIC
both on the server address and the MUX protocol. An error is reported in
the following case :
* proto quic is explicitely specified but server address does not
  specify quic4/quic6 prefix
* another proto is explicitely specified but server address uses
  quic4/quic6 prefix

diff --git a/src/cfgparse.c b/src/cfgparse.c
index a1ea79c5ca84d7ee4b78ffc71e60d334c69ad22b..ac505300ac830b461889dfccce80b0bcfbb2276f 100644 (file)
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -4130,6 +4130,24 @@ out_uri_auth_compat:
                                         newsrv->id, newsrv->conf.file, newsrv->conf.line);
                                cfgerr++;
                        }
+                       else {
+                               if ((mux_ent->mux->flags & MX_FL_FRAMED) && !srv_is_quic(newsrv)) {
+                                       ha_alert("%s '%s' : MUX protocol '%.*s' is incompatible with stream transport used by server '%s' at [%s:%d].\n",
+                                                proxy_type_str(curproxy), curproxy->id,
+                                                (int)newsrv->mux_proto->token.len,
+                                                newsrv->mux_proto->token.ptr,
+                                                newsrv->id, newsrv->conf.file, newsrv->conf.line);
+                                       cfgerr++;
+                               }
+                               else if (!(mux_ent->mux->flags & MX_FL_FRAMED) && srv_is_quic(newsrv)) {
+                                       ha_alert("%s '%s' : MUX protocol '%.*s' is incompatible with framed transport used by server '%s' at [%s:%d].\n",
+                                                proxy_type_str(curproxy), curproxy->id,
+                                                (int)newsrv->mux_proto->token.len,
+                                                newsrv->mux_proto->token.ptr,
+                                                newsrv->id, newsrv->conf.file, newsrv->conf.line);
+                                       cfgerr++;
+                               }
+                       }
 
                        /* update the mux */
                        newsrv->mux_proto = mux_ent;