| // Copyright (c) 2021 The Chromium Authors. All rights reserved. | 
 | // Use of this source code is governed by a BSD-style license that can be | 
 | // found in the LICENSE file. | 
 |  | 
 | #include "quic/core/http/http_constants.h" | 
 |  | 
 | #include "absl/strings/str_cat.h" | 
 |  | 
 | namespace quic { | 
 |  | 
 | #define RETURN_STRING_LITERAL(x) \ | 
 |   case x:                        \ | 
 |     return #x; | 
 |  | 
 | std::string H3SettingsToString(Http3AndQpackSettingsIdentifiers identifier) { | 
 |   switch (identifier) { | 
 |     RETURN_STRING_LITERAL(SETTINGS_QPACK_MAX_TABLE_CAPACITY); | 
 |     RETURN_STRING_LITERAL(SETTINGS_MAX_FIELD_SECTION_SIZE); | 
 |     RETURN_STRING_LITERAL(SETTINGS_QPACK_BLOCKED_STREAMS); | 
 |     RETURN_STRING_LITERAL(SETTINGS_H3_DATAGRAM_DRAFT00); | 
 |     RETURN_STRING_LITERAL(SETTINGS_H3_DATAGRAM_DRAFT04); | 
 |     RETURN_STRING_LITERAL(SETTINGS_WEBTRANS_DRAFT00); | 
 |     RETURN_STRING_LITERAL(SETTINGS_ENABLE_CONNECT_PROTOCOL); | 
 |   } | 
 |   return absl::StrCat("UNSUPPORTED_SETTINGS_TYPE(", identifier, ")"); | 
 | } | 
 |  | 
 | const absl::string_view kUserAgentHeaderName = "user-agent"; | 
 |  | 
 | #undef RETURN_STRING_LITERAL  // undef for jumbo builds | 
 |  | 
 | }  // namespace quic |