Method change_response_header

src/proxy/Transform.cc:1070–1104

 */

void
RangeTransform::change_response_header()
{
  MIMEField *field;
  char      *reason_phrase;
  HTTPStatus status_code;

  ink_release_assert(m_transform_resp);

  status_code = HTTP_STATUS_PARTIAL_CONTENT;
  m_transform_resp->status_set(status_code);
  reason_phrase = const_cast<char *>(http_hdr_reason_lookup(status_code));
  m_transform_resp->reason_set(reason_phrase, strlen(reason_phrase));

  if (m_num_range_fields > 1) {
    // set the right Content-Type for multiple entry Range
    field = m_transform_resp->field_find(MIME_FIELD_CONTENT_TYPE, MIME_LEN_CONTENT_TYPE);

    if (field != nullptr) {
      m_transform_resp->field_delete(MIME_FIELD_CONTENT_TYPE, MIME_LEN_CONTENT_TYPE);
    }

    field = m_transform_resp->field_create(MIME_FIELD_CONTENT_TYPE, MIME_LEN_CONTENT_TYPE);
    field->value_append(m_transform_resp->m_heap, m_transform_resp->m_mime, range_type, sizeof(range_type) - 1);

    m_transform_resp->field_attach(field);
  } else {
    char numbers[RANGE_NUMBERS_LENGTH];
    m_transform_resp->field_delete(MIME_FIELD_CONTENT_RANGE, MIME_LEN_CONTENT_RANGE);
    field = m_transform_resp->field_create(MIME_FIELD_CONTENT_RANGE, MIME_LEN_CONTENT_RANGE);
    snprintf(numbers, sizeof(numbers), "bytes %" PRId64 "-%" PRId64 "/%" PRId64, m_ranges[0]._start, m_ranges[0]._end, m_output_cl);
    field->value_set(m_transform_resp->m_heap, m_transform_resp->m_mime, numbers, strlen(numbers));
    m_transform_resp->field_attach(field);
  }
}

#undef RANGE_NUMBERS_LENGTH