monero/src/cryptonote_basic/connection_context.h

// Copyright (c) 2014-2018, The Monero Project
// 
// All rights reserved.
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// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
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//    used to endorse or promote products derived from this software without specific
//    prior written permission.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers

#pragma once
#include <unordered_set>
#include <atomic>
#include "net/net_utils_base.h"
#include "copyable_atomic.h"

namespace cryptonote
{

  struct cryptonote_connection_context: public epee::net_utils::connection_context_base
  {
    cryptonote_connection_context(): m_state(state_before_handshake), m_remote_blockchain_height(0), m_last_response_height(0),
        m_callback_request_count(0), m_last_known_hash(crypto::null_hash) {}

    enum state
    {
      state_before_handshake = 0, //default state
      state_synchronizing,
      state_standby,
      state_idle,
      state_normal
    };

    state m_state;
    std::list<crypto::hash> m_needed_objects;
    std::unordered_set<crypto::hash> m_requested_objects;
    uint64_t m_remote_blockchain_height;
    uint64_t m_last_response_height;
    boost::posix_time::ptime m_last_request_time;
    epee::copyable_atomic m_callback_request_count; //in debug purpose: problem with double callback rise
    crypto::hash m_last_known_hash;
    //size_t m_score;  TODO: add score calculations
  };

  inline std::string get_protocol_state_string(cryptonote_connection_context::state s)
  {
    switch (s)
    {
    case cryptonote_connection_context::state_before_handshake:
      return "state_before_handshake";
    case cryptonote_connection_context::state_synchronizing:
      return "state_synchronizing";
    case cryptonote_connection_context::state_standby:
      return "state_standby";
    case cryptonote_connection_context::state_idle:
      return "state_idle";
    case cryptonote_connection_context::state_normal:
      return "state_normal";
    default:
      return "unknown";
    }    
  }

}