Define stream pressure negotiation and timestamp metric snapshots

src/stream/stream_network.h

@@ -7,6 +7,7 @@
 
 #include "stream.h"
 #include "stream_wire.h"
+#include "stream_load.h"
 
 struct stream_network;
 struct STREAM_RECEIVE;
@@ -16,6 +17,9 @@ struct stream_receive_info {
     uint64_t handle, peer, start, next, blocks, gaps;
     enum stream_receive_state state;
     int reason;
+    struct stream_metric_snapshot metrics, supplier_metrics;
+    uint32_t rtt_ms;
+    int metrics_valid, supplier_metrics_valid, rtt_valid, close_requested;
 };
 /* out заранее NULL; seq=UINT64_MAX: первая выдача с конца, остальные ждут её проверенный общий старт.
  * peer должен быть онлайн-кандидатом группы. Повтор peer+stream+sub не создаёт вторую выдачу. */
@@ -25,10 +29,22 @@ void stream_receive_close(struct STREAM_RECEIVE *receive);
  * Буфер/подписка/downstream сохраняются; старые receive handles становятся CLOSED и всё равно требуют close. */
 int stream_receive_restart(struct STREAM_HANDLE *subscription);
 int stream_receive_get_info(const struct STREAM_RECEIVE *receive, struct stream_receive_info *info);
+struct stream_peer_load_info {
+    struct stream_load_snapshot load;
+    uint64_t request_id, required_rate, released_rate, deadline_ms, transport_queued_bytes, inflight_bytes;
+    uint32_t transport_queued_packets;
+    double cpu_percent;
+    uint64_t callback_late_ms;
+    unsigned required_count, released_count;
+    int global_pressure, request_active;
+};
+int stream_peer_get_load(struct UTUN_INSTANCE *inst, uint64_t peer, struct stream_peer_load_info *info);
 
 int stream_network_init(struct UTUN_INSTANCE *inst, struct stream_network **out);
 void stream_network_destroy(struct stream_network *network);
 void stream_network_changed(struct stream_network *network);
 void stream_network_cancel(struct stream_network *network, const struct stream_descriptor *descriptor);
 void stream_network_membership_changed(struct stream_network *network, uint64_t node_id, const char *channel);
+void stream_network_cache_event(struct stream_network *network, const struct stream_descriptor *descriptor,
+                                const uint8_t *wire, size_t length, int added);
 #endif