/*
 *
 * Copyright 2015, Google Inc.
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 * modification, are permitted provided that the following conditions are
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 *
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 * notice, this list of conditions and the following disclaimer.
 *     * 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
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 * this software without specific prior written permission.
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#ifndef GRPC_INTERNAL_CORE_TRANSPORT_TRANSPORT_IMPL_H
#define GRPC_INTERNAL_CORE_TRANSPORT_TRANSPORT_IMPL_H

#include "src/core/transport/transport.h"

typedef struct grpc_transport_vtable {
  /* Memory required for a single stream element - this is allocated by upper
     layers and initialized by the transport */
  size_t sizeof_stream; /* = sizeof(transport stream) */

  /* implementation of grpc_transport_init_stream */
  int (*init_stream)(grpc_transport *self, grpc_stream *stream,
                     const void *server_data, grpc_transport_op *initial_op);

  /* implementation of grpc_transport_send_batch */
  void (*perform_op)(grpc_transport *self, grpc_stream *stream,
                     grpc_transport_op *op);

  /* implementation of grpc_transport_add_to_pollset */
  void (*add_to_pollset)(grpc_transport *self, grpc_pollset *pollset);

  /* implementation of grpc_transport_destroy_stream */
  void (*destroy_stream)(grpc_transport *self, grpc_stream *stream);

  /* implementation of grpc_transport_goaway */
  void (*goaway)(grpc_transport *self, grpc_status_code status,
                 gpr_slice debug_data);

  /* implementation of grpc_transport_close */
  void (*close)(grpc_transport *self);

  /* implementation of grpc_transport_ping */
  void (*ping)(grpc_transport *self, void (*cb)(void *user_data),
               void *user_data);

  /* implementation of grpc_transport_destroy */
  void (*destroy)(grpc_transport *self);
} grpc_transport_vtable;

/* an instance of a grpc transport */
struct grpc_transport {
  /* pointer to a vtable defining operations on this transport */
  const grpc_transport_vtable *vtable;
};

#endif /* GRPC_INTERNAL_CORE_TRANSPORT_TRANSPORT_IMPL_H */
