feat Code for networking

2 files changed, 155 insertions, 0 deletions

diff --git a/src/blu_cat/net/server/server.cpp b/src/blu_cat/net/server/server.cpp
new file mode 100644
index 0000000..575e203
--- /dev/null
+++ b/src/blu_cat/net/server/server.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2022-2025 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "server.hpp"
+
+#include <iostream>
+
+namespace BluCat::NET
+{
+
+void
+Server::wait_for_client_connections()
+{
+	acceptor.async_accept(
+		[this](std::error_code error, asio::ip::tcp::socket socket)
+		{
+			if(!error)
+			{
+				std::scoped_lock lock(this->mut);
+
+				std::cout << "[SERVER] New connection: " << socket.remote_endpoint() <<
+					std::endl;
+
+				if(this->free_connection_slots.size() > 0)
+				{
+					unsigned long pos{this->free_connection_slots.pop_front()};
+					std::cout << "Working " << pos << std::endl;
+					Connection *new_connection = new Connection(
+						this->callback_instantiator(), this, this->io_context,
+						std::move(socket), pos);
+					this->connections[pos] = new_connection;
+				}
+				else
+				{
+					unsigned long pos{this->connections.size()};
+					Connection *new_connection = new Connection(
+						this->callback_instantiator(), this, this->io_context,
+						std::move(socket), pos);
+					this->connections.push_back(new_connection);
+				}
+			}
+			else
+			{
+				std::cout << "error connecting to client." << std::endl;
+			}
+
+			std::cout << "num clients: " << connections.size() << std::endl;
+
+			this->wait_for_client_connections();
+		});
+}
+
+void
+Server::read_messages()
+{
+	std::scoped_lock lock(this->mut);
+	for(auto i{0}; i < this->connections.size(); i++)
+	{
+		Connection *c{this->connections[i]};
+		if(c != nullptr) c->read_messages();
+	}
+}
+
+void
+Server::end_connection(unsigned long index)
+{
+	std::scoped_lock lock(this->mut);
+	delete this->connections[index];
+	this->connections[index] = nullptr;
+	this->free_connection_slots.push_back(index);
+}
+
+Server::Server(MessageCallback *(*callback_instantiator)(), const uint16_t port):
+	callback_instantiator{callback_instantiator},
+	acceptor{io_context, asio::ip::tcp::endpoint(asio::ip::tcp::v4(), port)}
+{
+	this->thread_context = std::thread([this](){this->io_context.run();});
+	this->wait_for_client_connections();
+}
+
+Server::~Server()
+{
+	this->connections.clear();
+	this->io_context.stop();
+	if(this->thread_context.joinable()) thread_context.join();
+}
+
+}
diff --git a/src/blu_cat/net/server/server.hpp b/src/blu_cat/net/server/server.hpp
new file mode 100644
index 0000000..271d75a
--- /dev/null
+++ b/src/blu_cat/net/server/server.hpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2022-2025 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef BLU_CAT_SERVER_SERVER_H
+#define BLU_CAT_SERVER_SERVER_H 1
+
+#include "../common/connection.hpp"
+#include "../common/connection_callback.hpp"
+#include "../common/tsqueue.hpp"
+
+namespace BluCat::NET
+{
+
+class Server: public ConnectionCallback
+{
+	std::mutex mut;
+	asio::io_context io_context;
+	std::thread thread_context;
+	asio::ip::tcp::acceptor acceptor;
+	MessageCallback *(*callback_instantiator)();
+
+	TSQueue<unsigned long> free_connection_slots;
+	std::vector<Connection*> connections;
+
+	void
+	wait_for_client_connections();
+
+public:
+	void
+	read_messages();
+
+	void
+	end_connection(unsigned long index);
+
+	Server(MessageCallback *(*callback_instantiator)(), const uint16_t port);
+	~Server();
+};
+
+}
+
+#endif /* BLU_CAT_SERVER_SERVER_H */