|  | // 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); | 
|  | RETURN_STRING_LITERAL(SETTINGS_WEBTRANS_DRAFT00); | 
|  | } | 
|  | return absl::StrCat("UNSUPPORTED_SETTINGS_TYPE(", identifier, ")"); | 
|  | } | 
|  |  | 
|  | const absl::string_view kUserAgentHeaderName = "user-agent"; | 
|  |  | 
|  | #undef RETURN_STRING_LITERAL  // undef for jumbo builds | 
|  |  | 
|  | }  // namespace quic |