Drop all clients and reject incoming connections when we fail to talk to the upstream pool in proxy mode

src/generator.c

@@ -1289,6 +1289,8 @@ retry:
 		break;
 	}
 	if (!alive) {
+		send_proc(ckp->stratifier, "dropall");
+		send_proc(ckp->connector, "reject");
 		if (!ckp->chosen_server) {
 			LOGWARNING("Failed to connect to any servers as proxy, retrying in 5s!");
 			sleep(5);

src/stratifier.c

@@ -1090,6 +1090,8 @@ retry:
 			LOGDEBUG("Stratifier failed to parse dropclient command: %s", buf);
 		else
 			drop_client(client_id);
+	} else if (cmdmatch(buf, "dropall")) {
+		drop_allclients(ckp);
 	} else if (cmdmatch(buf, "block")) {
 		block_solve(ckp);
 	} else if (cmdmatch(buf, "loglevel")) {