Define routed stream relay requests and generation-scoped replies

src/stream/stream_wire.h

@@ -10,7 +10,7 @@
 extern "C" {
 #endif
 
-#define STREAM_WIRE_VERSION 3
+#define STREAM_WIRE_VERSION 4
 #define STREAM_WIRE_HEADER 52
 #define STREAM_PATH_MAX 32
 #define STREAM_END_SIZE 106
@@ -25,8 +25,12 @@ extern "C" {
 enum stream_command {
     STREAM_CMD_INFO_REQ = 1, STREAM_CMD_INFO_RESP, STREAM_CMD_SUBSCRIBE, STREAM_CMD_ACCEPT,
     STREAM_CMD_REJECT, STREAM_CMD_RENEW, STREAM_CMD_UNSUBSCRIBE, STREAM_CMD_CLOSED,
-    STREAM_CMD_DATA, STREAM_CMD_GAP, STREAM_CMD_END, STREAM_CMD_REVERSE_REQ, STREAM_CMD_OVERLOAD, STREAM_CMD_OVERLOAD_SELECT
+    STREAM_CMD_DATA, STREAM_CMD_GAP, STREAM_CMD_END, STREAM_CMD_REVERSE_REQ, STREAM_CMD_OVERLOAD, STREAM_CMD_OVERLOAD_SELECT,
+    STREAM_CMD_RELAY_REQUEST, STREAM_CMD_RELAY_STATUS, STREAM_CMD_RELAY_CANCEL
 };
+/* Routed помощь: handle — nonce запроса; эпохи запроса/сервиса независимы от raw ETCP-сессии. */
+enum stream_relay_status { STREAM_RELAY_STARTING = 1, STREAM_RELAY_READY, STREAM_RELAY_BOUND,
+                           STREAM_RELAY_REJECTED, STREAM_RELAY_ENDED, STREAM_RELAY_CANCELLED };
 enum stream_reject {
     STREAM_REASON_STOPPED = 1, STREAM_REASON_POSITION, STREAM_REASON_EXPIRED, STREAM_REASON_STALE,
     STREAM_REASON_CONFLICT, STREAM_REASON_LIMIT, STREAM_REASON_LOOP, STREAM_REASON_TRANSPORT,