From 2ed8103ff1c0fca7372b3c3888f590ba41c525e6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Sun, 13 Aug 2023 19:01:48 +0200
Subject: Connection class for network protocol

---
 src/network/protocol.h | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'src/network/protocol.h')

diff --git a/src/network/protocol.h b/src/network/protocol.h
index 6a22f3b..a9bbaff 100644
--- a/src/network/protocol.h
+++ b/src/network/protocol.h
@@ -3,10 +3,16 @@
 #include <netinet/in.h>
 
 #include <cstdint>
+#include <memory>
+#include <mutex>
+#include <variant>
 #include <vector>
 
 namespace erebos {
 
+using std::mutex;
+using std::unique_ptr;
+using std::variant;
 using std::vector;
 
 class NetworkProtocol
@@ -20,6 +26,21 @@ public:
 	NetworkProtocol & operator=(NetworkProtocol &&);
 	~NetworkProtocol();
 
+	class Connection;
+
+	struct NewConnection;
+	struct ConnectionReadReady;
+	struct ProtocolClosed {};
+
+	using PollResult = variant<
+		NewConnection,
+		ConnectionReadReady,
+		ProtocolClosed>;
+
+	PollResult poll();
+
+	Connection connect(sockaddr_in6 addr);
+
 	bool recvfrom(vector<uint8_t> & buffer, sockaddr_in6 & addr);
 	void sendto(const vector<uint8_t> & buffer, sockaddr_in addr);
 	void sendto(const vector<uint8_t> & buffer, sockaddr_in6 addr);
@@ -28,6 +49,40 @@ public:
 
 private:
 	int sock;
+
+	mutex protocolMutex;
+	vector<uint8_t> buffer;
+
+	struct ConnectionPriv;
+	vector<ConnectionPriv *> connections;
+};
+
+class NetworkProtocol::Connection
+{
+	friend class NetworkProtocol;
+	Connection(unique_ptr<ConnectionPriv> p);
+public:
+	Connection(const Connection &) = delete;
+	Connection(Connection &&);
+	Connection & operator=(const Connection &) = delete;
+	Connection & operator=(Connection &&);
+	~Connection();
+
+	using Id = uintptr_t;
+	Id id() const;
+
+	const sockaddr_in6 & peerAddress() const;
+
+	bool receive(vector<uint8_t> & buffer);
+	bool send(const vector<uint8_t> & buffer);
+
+	void close();
+
+private:
+	unique_ptr<ConnectionPriv> p;
 };
 
+struct NetworkProtocol::NewConnection { Connection conn; };
+struct NetworkProtocol::ConnectionReadReady { Connection::Id id; };
+
 }
-- 
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