test

.gitignore

@@ -13,3 +13,4 @@ CMakeUserPresets.json
 
 build/
 .vscode/
+.DS_Store

include/columnlynx/common/libsodium_wrapper.hpp

@@ -11,10 +11,6 @@
 #include <columnlynx/common/utils.hpp>
 #include <array>
 #include <vector>
-#include <openssl/x509.h>
-#include <openssl/x509_vfy.h>
-#include <openssl/pem.h>
-#include <openssl/x509v3.h>
 #include <memory>
 #include <cstring>
 

src/client/main.cpp

@@ -96,7 +96,7 @@ int main(int argc, char** argv) {
         });
         //ioThread.join();
 
-        log("Client connected to " + host + ":" + port);
+        log("Attempting connection to " + host + ":" + port);
         debug("Client connection flag: " + std::to_string(client->isConnected()));
         debug("Client handshake flag: " + std::to_string(client->isHandshakeComplete()));
         debug("isDone flag: " + std::to_string(done));

src/client/net/tcp/tcp_client.cpp

@@ -13,13 +13,22 @@ namespace ColumnLynx::Net::TCP {
                 if (!ec) {
                     asio::async_connect(mSocket, endpoints,
                         [this, self](asio::error_code ec, const tcp::endpoint&) {
-                            if (!NetHelper::isExpectedDisconnect(ec)) {
+                            if (!ec) {
                                 mConnected = true;
                                 Utils::log("Client connected.");
                                 mHandler = std::make_shared<MessageHandler>(std::move(mSocket));
                                 mHandler->onMessage([this](AnyMessageType type, const std::string& data) {
                                     mHandleMessage(static_cast<ServerMessageType>(MessageHandler::toUint8(type)), data);
                                 });
+                                // Close only after peer FIN to avoid RSTs
+                                mHandler->onDisconnect([this](const asio::error_code& ec) {
+                                    asio::error_code ec2;
+                                    if (mHandler) {
+                                        mHandler->socket().close(ec2);
+                                    }
+                                    mConnected = false;
+                                    Utils::log(std::string("Server disconnected: ") + ec.message());
+                                });
                                 mHandler->start();
                                 
                                 // Init connection handshake
@@ -50,7 +59,9 @@ namespace ColumnLynx::Net::TCP {
                             
                                 mStartHeartbeat();
                             } else {
-                                Utils::error("Client connect failed: " + ec.message());
+                                if (!NetHelper::isExpectedDisconnect(ec)) {
+                                    Utils::error("Client connect failed: " + ec.message());
+                                }
                             }
                         });
                 } else {
@@ -81,18 +92,14 @@ namespace ColumnLynx::Net::TCP {
             asio::error_code ec;
             mHeartbeatTimer.cancel();
 
-            mHandler->socket().shutdown(tcp::socket::shutdown_both, ec);
+            // Half-close: stop sending, keep reading until peer FIN
+            mHandler->socket().shutdown(tcp::socket::shutdown_send, ec);
             if (ec) {
                 Utils::error("Error during socket shutdown: " + ec.message());
             }
 
-            mHandler->socket().close(ec);
+            // Do not close immediately; rely on onDisconnect to finalize
-            if (ec) {
+            Utils::log("Client initiated graceful disconnect (half-close).");
-                Utils::error("Error during socket close: " + ec.message());
-            }
-
-            mConnected = false;
-            Utils::log("Client disconnected.");
         }
     }
 

src/common/tcp_message_handler.cpp

@@ -43,13 +43,19 @@ namespace ColumnLynx::Net::TCP {
         auto self = shared_from_this();
         asio::async_read(mSocket, asio::buffer(mHeader),
             [this, self](asio::error_code ec, std::size_t) {
-                if (!NetHelper::isExpectedDisconnect(ec)) {
+                if (!ec) {
                     mCurrentType = decodeMessageType(mHeader[0]);
 
                     uint16_t len = (mHeader[1] << 8) | mHeader[2];
                     mReadBody(len);
                 } else {
-                    Utils::error("Header read failed: " + ec.message());
+                    if (!NetHelper::isExpectedDisconnect(ec)) {
+                        Utils::error("Header read failed: " + ec.message());
+                    }
+                    // Connection closed, trigger disconnect handler
+                    if (mOnDisconnect) {
+                        mOnDisconnect(ec);
+                    }
                 }
             }
         );
@@ -61,7 +67,7 @@ namespace ColumnLynx::Net::TCP {
 
         asio::async_read(mSocket, asio::buffer(mBody),
             [this, self](asio::error_code ec, std::size_t) {
-                if (!NetHelper::isExpectedDisconnect(ec)) {
+                if (!ec) {
                     std::string payload(mBody.begin(), mBody.end());
                     
                     // Dispatch based on message type
@@ -71,8 +77,10 @@ namespace ColumnLynx::Net::TCP {
 
                     mReadHeader(); // Keep listening
                 } else {
-                    Utils::error("Body read failed: " + ec.message());
+                    if (!NetHelper::isExpectedDisconnect(ec)) {
-
+                        Utils::error("Body read failed: " + ec.message());
+                    }
+                    // Connection closed, trigger disconnect handler
                     if (mOnDisconnect) {
                         mOnDisconnect(ec);
                     }

src/server/net/tcp/tcp_connection.cpp

@@ -11,8 +11,20 @@ namespace ColumnLynx::Net::TCP {
         });
 
         mHandler->onDisconnect([this](const asio::error_code& ec) {
-            Utils::log("Client disconnected: " + mHandler->socket().remote_endpoint().address().to_string() + " - " + ec.message());
+            // Peer has closed; finalize locally without sending RST
-            disconnect();
+            std::string ip = mHandler->socket().remote_endpoint().address().to_string();
+            Utils::log("Client disconnected: " + ip + " - " + ec.message());
+            asio::error_code ec2;
+            mHandler->socket().close(ec2);
+
+            SessionRegistry::getInstance().erase(mConnectionSessionID);
+            SessionRegistry::getInstance().deallocIP(mConnectionSessionID);
+
+            Utils::log("Closed connection to " + ip);
+
+            if (mOnDisconnect) {
+                mOnDisconnect(shared_from_this());
+            }
         });
 
         mHandler->start();
@@ -40,24 +52,13 @@ namespace ColumnLynx::Net::TCP {
         }
         mHeartbeatTimer.cancel();
         asio::error_code ec;
-        mHandler->socket().shutdown(asio::ip::tcp::socket::shutdown_both, ec);
+        // Half-close: stop sending, keep reading until peer FIN
+        mHandler->socket().shutdown(asio::ip::tcp::socket::shutdown_send, ec);
         if (ec) {
             Utils::error("Error during socket shutdown: " + ec.message());
         }
-
+        // Do not close immediately; final cleanup happens in onDisconnect
-        mHandler->socket().close(ec);
+        Utils::log("Initiated graceful disconnect (half-close) to " + ip);
-        if (ec) {
-            Utils::error("Error during socket close: " + ec.message());
-        }
-
-        SessionRegistry::getInstance().erase(mConnectionSessionID);
-        SessionRegistry::getInstance().deallocIP(mConnectionSessionID);
-
-        Utils::log("Closed connection to " + ip);
-
-        if (mOnDisconnect) {
-            mOnDisconnect(shared_from_this());
-        }
     }
 
     uint64_t TCPConnection::getSessionID() const {