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#pragma once
#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
{
public:
NetworkProtocol();
explicit NetworkProtocol(int sock);
NetworkProtocol(const NetworkProtocol &) = delete;
NetworkProtocol(NetworkProtocol &&);
NetworkProtocol & operator=(const NetworkProtocol &) = delete;
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);
void shutdown();
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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