Squashed 'external/toxcore/c-toxcore/' changes from c9cdae001..9ed2fa80d

9ed2fa80d fix(toxav): remove extra copy of video frame on encode
de30cf3ad docs: Add new file kinds, that should be useful to all clients.
d5b5e879d fix(DHT): Correct node skipping logic timed out nodes.
30e71fe97 refactor: Generate event dispatch functions and add tox_events_dispatch.
8fdbb0b50 style: Format parameter lists in event handlers.
d00dee12b refactor: Add warning logs when losing chat invites.
b144e8db1 feat: Add a way to look up a file number by ID.
849281ea0 feat: Add a way to fetch groups by chat ID.
a2c177396 refactor: Harden event system and improve type safety.
8f5caa656 refactor: Add MessagePack string support to bin_pack.
34e8d5ad5 chore: Add GitHub CodeQL workflow and local Docker runner.
f7b068010 refactor: Add nullability annotations to event headers.
788abe651 refactor(toxav): Use system allocator for mutexes.
2e4b423eb refactor: Use specific typedefs for public API arrays.
2baf34775 docs(toxav): update idle iteration interval see 679444751876fa3882a717772918ebdc8f083354
2f87ac67b feat: Add Event Loop abstraction (Ev).
f8dfc38d8 test: Fix data race in ToxScenario virtual_clock.
38313921e test(TCP): Add regression test for TCP priority queue integrity.
f94a50d9a refactor(toxav): Replace mutable_mutex with dynamically allocated mutex.
ad054511e refactor: Internalize DHT structs and add debug helpers.
8b467cc96 fix: Prevent potential integer overflow in group chat handshake.
4962bdbb8 test: Improve TCP simulation and add tests
5f0227093 refactor: Allow nullable data in group chat handlers.
e97b18ea9 chore: Improve Windows Docker support.
b14943bbd refactor: Move Logger out of Messenger into Tox.
dd3136250 cleanup: Apply nullability qualifiers to C++ codebase.
1849f70fc refactor: Extract low-level networking code to net and os_network.
8fec75421 refactor: Delete tox_random, align on rng and os_random.
a03ae8051 refactor: Delete tox_memory, align on mem and os_memory.
4c88fed2c refactor: Use `std::` prefixes more consistently in C++ code.
72452f2ae test: Add some more tests for onion and shared key cache.
d5a51b09a cleanup: Use tox_attributes.h in tox_private.h and install it.
b6f5b9fc5 test: Add some benchmarks for various high level things.
8a8d02785 test(support): Introduce threaded Tox runner and simulation barrier
d68d1d095 perf(toxav): optimize audio and video intermediate buffers by keeping them around
REVERT: c9cdae001 fix(toxav): remove extra copy of video frame on encode

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 9ed2fa80d582c714d6bdde6a7648220a92cddff8

testing/support/doubles/network_universe.hh

@@ -9,6 +9,7 @@
 #include <queue>
 #include <vector>
 
+#include "../../../toxcore/attributes.h"
 #include "../../../toxcore/network.h"
 
 namespace tox::test {
@@ -16,11 +17,17 @@ namespace tox::test {
 class FakeUdpSocket;
 class FakeTcpSocket;
 
+struct TcpFlags {
+    uint8_t value;
+};
+std::ostream &operator<<(std::ostream &os, TcpFlags flags);
+
 struct Packet {
     IP_Port from;
     IP_Port to;
     std::vector<uint8_t> data;
     uint64_t delivery_time;
+    uint64_t sequence_number = 0;
     bool is_tcp = false;
 
     // TCP Simulation Fields
@@ -28,9 +35,17 @@ struct Packet {
     uint32_t seq = 0;
     uint32_t ack = 0;
 
-    bool operator>(const Packet &other) const { return delivery_time > other.delivery_time; }
+    bool operator>(const Packet &other) const
+    {
+        if (delivery_time != other.delivery_time) {
+            return delivery_time > other.delivery_time;
+        }
+        return sequence_number > other.sequence_number;
+    }
 };
 
+bool is_loopback(const IP &ip);
+
 /**
  * @brief The God Object for the network simulation.
  * Manages routing, latency, and connectivity.
@@ -45,11 +60,11 @@ public:
 
     // Registration
     // Returns true if binding succeeded
-    bool bind_udp(IP ip, uint16_t port, FakeUdpSocket *socket);
+    bool bind_udp(IP ip, uint16_t port, FakeUdpSocket *_Nonnull socket);
     void unbind_udp(IP ip, uint16_t port);
 
-    bool bind_tcp(IP ip, uint16_t port, FakeTcpSocket *socket);
-    void unbind_tcp(IP ip, uint16_t port, FakeTcpSocket *socket);
+    bool bind_tcp(IP ip, uint16_t port, FakeTcpSocket *_Nonnull socket);
+    void unbind_tcp(IP ip, uint16_t port, FakeTcpSocket *_Nonnull socket);
 
     // Routing
     void send_packet(Packet p);
@@ -81,6 +96,7 @@ private:
     std::vector<PacketSink> observers_;
 
     uint64_t global_latency_ms_ = 0;
+    uint64_t next_packet_id_ = 0;
     bool verbose_ = false;
     std::recursive_mutex mutex_;
 };