text: //----------------------------------------------------------------------------
  //
  // TSDuck - The MPEG Transport Stream Toolkit
  // Copyright (c) 2005-2021, Thierry Lelegard
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice,
  //    this list of conditions and the following disclaimer.
  // 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.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  // THE POSSIBILITY OF SUCH DAMAGE.
  //
  //----------------------------------------------------------------------------
  //!
  //!  @file
  //!  IP output plugin for tsp.
  //!
  //----------------------------------------------------------------------------
  
  #pragma once
  #include "tsAbstractDatagramOutputPlugin.h"
  #include "tsUDPSocket.h"
  
  namespace ts {
      //!
      //! IP output plugin for tsp.
      //! @ingroup plugin
      //!
      class TSDUCKDLL IPOutputPlugin: public AbstractDatagramOutputPlugin
      {
          TS_NOBUILD_NOCOPY(IPOutputPlugin);
      public:
          //!
          //! Constructor.
          //! @param [in] tsp Associated callback to @c tsp executable.
          //!
          IPOutputPlugin(TSP* tsp);
  
          // Implementation of plugin API
          virtual bool getOptions() override;
          virtual bool start() override;
          virtual bool stop() override;
          virtual bool isRealTime() override;
  
          //! @cond nodoxygen
          // A dummy storage value to force inclusion of this module when using the static library.
          static const int REFERENCE;
          //! @endcond
  
      protected:
          // Implementation of AbstractDatagramOutputPlugin
          virtual bool sendDatagram(const void* address, size_t size) override;
  
      private:
          IPv4SocketAddress _destination;     // Destination address/port.
          IPv4Address       _local_addr;      // Local address.
          uint16_t          _local_port;      // Local UDP source port.
          int               _ttl;             // Time to live option.
          int               _tos;             // Type of service option.
          bool              _force_mc_local;  // Force multicast outgoing local interface
          UDPSocket         _sock;            // Outgoing socket
      };
  }
  