udptransport.h

// -*- mode: c++; c-file-style: "k&r"; c-basic-offset: 4 -*-
/***********************************************************************
 *
 * udptransport.h:
 *   message-passing network interface that uses UDP message delivery
 *   and libasync
 *
 * Copyright 2013 Dan R. K. Ports  <drkp@cs.washington.edu>
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 **********************************************************************/

#ifndef _LIB_UDPTRANSPORT_H_
#define _LIB_UDPTRANSPORT_H_

#include "lib/configuration.h"
#include "lib/transport.h"
#include "lib/transportcommon.h"

#include <event2/event.h>

#include <map>
#include <list>
#include <vector>
#include <unordered_map>
#include <random>
#include <mutex>
#include <netinet/in.h>

class UDPTransportAddress : public TransportAddress
{
public:
    UDPTransportAddress * clone() const;
private:
    UDPTransportAddress(const sockaddr_in &addr);
    sockaddr_in addr;
    friend class UDPTransport;
    friend bool operator==(const UDPTransportAddress &a,
                           const UDPTransportAddress &b);
    friend bool operator!=(const UDPTransportAddress &a,
                           const UDPTransportAddress &b);
    friend bool operator<(const UDPTransportAddress &a,
                          const UDPTransportAddress &b);
};

class UDPTransport : public TransportCommon<UDPTransportAddress>
{
public:
    UDPTransport(double dropRate = 0.0, double reorderRate = 0.0,
                 int dscp = 0, event_base *evbase = nullptr);
    virtual ~UDPTransport();