text: /*
   *
   * Copyright 2015, Google Inc.
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * 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
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * 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.
   *
   */
  
  #ifndef GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
  #define GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H
  
  #include <grpc/support/port_platform.h>
  #include <grpc/support/slice.h>
  #include <grpc/support/slice_buffer.h>
  #include "src/core/ext/transport/chttp2/transport/frame.h"
  #include "src/core/lib/iomgr/exec_ctx.h"
  
  typedef enum {
    GRPC_CHTTP2_GOAWAY_LSI0,
    GRPC_CHTTP2_GOAWAY_LSI1,
    GRPC_CHTTP2_GOAWAY_LSI2,
    GRPC_CHTTP2_GOAWAY_LSI3,
    GRPC_CHTTP2_GOAWAY_ERR0,
    GRPC_CHTTP2_GOAWAY_ERR1,
    GRPC_CHTTP2_GOAWAY_ERR2,
    GRPC_CHTTP2_GOAWAY_ERR3,
    GRPC_CHTTP2_GOAWAY_DEBUG
  } grpc_chttp2_goaway_parse_state;
  
  typedef struct {
    grpc_chttp2_goaway_parse_state state;
    uint32_t last_stream_id;
    uint32_t error_code;
    char *debug_data;
    uint32_t debug_length;
    uint32_t debug_pos;
  } grpc_chttp2_goaway_parser;
  
  void grpc_chttp2_goaway_parser_init(grpc_chttp2_goaway_parser *p);
  void grpc_chttp2_goaway_parser_destroy(grpc_chttp2_goaway_parser *p);
  grpc_error *grpc_chttp2_goaway_parser_begin_frame(
      grpc_chttp2_goaway_parser *parser, uint32_t length, uint8_t flags);
  grpc_error *grpc_chttp2_goaway_parser_parse(grpc_exec_ctx *exec_ctx,
                                              void *parser,
                                              grpc_chttp2_transport *t,
                                              grpc_chttp2_stream *s,
                                              gpr_slice slice, int is_last);
  
  void grpc_chttp2_goaway_append(uint32_t last_stream_id, uint32_t error_code,
                                 gpr_slice debug_data,
                                 gpr_slice_buffer *slice_buffer);
  
  #endif /* GRPC_CORE_EXT_TRANSPORT_CHTTP2_TRANSPORT_FRAME_GOAWAY_H */
  