Version 1.2.1 - Bug Fixes

Critical (4)

C1 — udp_client.hpp / udp_client.cpp: Moved mStartReceive() out of the constructor into start(), after the socket is opened.
C2 — client/main.cpp:187: || → && in the main loop condition, so it exits when the connection drops instead of spinning forever.
C3 — tcp_connection.hpp: Added mConnectionAESKey{}, mConnectionSessionID(0), and mConnectionPublicKey{} to the constructor initializer list.
C4 — tcp_server.hpp / tcp_server.cpp: Added std::mutex mClientsMutex and locked it at all three mClients access sites (insert, erase callback, stop snapshot).
High (5)

H1 — tcp_connection.cpp:284: Replaced hardcoded htonl(0x0A0A0001) with htonl(baseIP + 1).
H2 — session_registry.hpp / session_registry.cpp / udp_server.cpp: Changed get() and getByIP() to return shared_ptr<SessionState> (non-const); removed all four const_cast usages.
H3 — session_registry.cpp:90: Guarded against mask == 0 || mask >= 32 (shift UB) and hostCount < 3 (unsigned underflow).
H4 — virtual_interface.cpp: Added runCommandWin32() using CreateProcess (no shell); replaced both system() calls in resetIP().
H5 — virtual_interface.cpp: Added close(mFd); mFd = -1; before both throw sites in the macOS constructor (ioctl failure and connect failure).
Medium (4)

M1 — tcp_connection.cpp:241: Added explicit find() + end-iterator check for NETWORK and SUBNET_MASK before dereferencing.
M2 — tcp_message_handler.cpp: Added an 8 KB (MAX_MSG_BODY = 8192) cap on incoming message body length; oversized messages close the connection.
M3 — tcp_connection.cpp:232: Capped the session ID generation loop at 16 attempts before disconnecting.
M4 — session_registry.cpp:8: put() now evicts the old IP→session mapping before replacing an entry, preventing stale mIPSessions entries.

src/client/main.cpp

@@ -184,7 +184,7 @@ int main(int argc, char** argv) {
         debug("isDone flag: " + std::to_string(done));
         
         // Client is running
-        while ((client->isConnected() || !client->isHandshakeComplete()) && !done) {
+        while (client->isConnected() && !done) {
             //debug("Client connection flag: " + std::to_string(client->isConnected()));
             auto packet = tun->readPacket();
             /*if (!client->isConnected() || done) {

src/client/net/udp/udp_client.cpp

@@ -44,6 +44,7 @@ namespace ColumnLynx::Net::UDP {
         }
         
         Utils::log("UDP Client ready to send to " + mRemoteEndpoint.address().to_string() + ":" + std::to_string(mRemoteEndpoint.port()));
+        mStartReceive();
     }
 
     void UDPClient::sendMessage(const std::string& data) {