Squashed 'external/toxcore/c-toxcore/' changes from 1828c5356..c9cdae001

c9cdae001 fix(toxav): remove extra copy of video frame on encode
4f6d4546b test: Improve the fake network library.
a2581e700 refactor(toxcore): generate `Friend_Request` and `Dht_Nodes_Response`
2aaa11770 refactor(toxcore): use Tox_Memory in generated events
5c367452b test(toxcore): fix incorrect mutex in tox_scenario_get_time
8f92e710f perf: Add a timed limit of number of cookie requests.
695b6417a test: Add some more simulated network support.
815ae9ce9 test(toxcore): fix thread-safety in scenario framework
6d85c754e test(toxcore): add unit tests for net_crypto
9c22e79cc test(support): add SimulatedEnvironment for deterministic testing
f34fcb195 chore: Update windows Dockerfile to debian stable (trixie).
ece0e8980 fix(group_moderation): allow validating unsorted sanction list signatures
a4fa754d7 refactor: rename struct Packet to struct Net_Packet
d6f330f85 cleanup: Fix some warnings from coverity.
e206bffa2 fix(group_chats): fix sync packets reverting topics
0e4715598 test: Add new scenario testing framework.
668291f44 refactor(toxcore): decouple Network_Funcs from sockaddr via IP_Port
fc4396cef fix: potential division by zero in toxav and unsafe hex parsing
8e8b352ab refactor: Add nullable annotations to struct members.
7740bb421 refactor: decouple net_crypto from DHT
1936d4296 test: add benchmark for toxav audio and video
46bfdc2df fix: correct printf format specifiers for unsigned integers
REVERT: 1828c5356 fix(toxav): remove extra copy of video frame on encode

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: c9cdae001341e701fca980c9bb9febfeb95d2902

toxcore/TCP_client.h

@@ -18,6 +18,10 @@
 #include "net_profile.h"
 #include "network.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define TCP_CONNECTION_TIMEOUT 10
 
 typedef enum TCP_Proxy_Type {
@@ -126,4 +130,8 @@ typedef int tcp_oob_data_cb(void *_Nonnull object, const uint8_t *_Nonnull publi
 int send_oob_packet(const Logger *_Nonnull logger, TCP_Client_Connection *_Nonnull con, const uint8_t *_Nonnull public_key, const uint8_t *_Nonnull data, uint16_t length);
 void oob_data_handler(TCP_Client_Connection *_Nonnull con, tcp_oob_data_cb *_Nonnull oob_data_callback, void *_Nonnull object);
 
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
 #endif /* C_TOXCORE_TOXCORE_TCP_CLIENT_H */