1 // Copyright 2013 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // A set of common constants that are needed for the WebSocket handshake. 6 // In general, you should prefer using these constants to literal strings, 7 // except in tests. 8 // 9 // These constants cannot be used in files that are compiled on iOS, because 10 // this file is not compiled on iOS. 11 12 #ifndef NET_WEBSOCKETS_WEBSOCKET_HANDSHAKE_CONSTANTS_H_ 13 #define NET_WEBSOCKETS_WEBSOCKET_HANDSHAKE_CONSTANTS_H_ 14 15 #include <stddef.h> 16 17 #include "net/base/net_export.h" 18 19 // This file plases constants inside the ::net::websockets namespace to avoid 20 // risk of collisions with other symbols in libnet. 21 namespace net::websockets { 22 23 // "HTTP/1.1" 24 // RFC6455 only requires HTTP/1.1 "or better" but in practice an HTTP version 25 // other than 1.1 should not occur in a WebSocket handshake. 26 extern const char kHttpProtocolVersion[]; 27 28 // The Sec-WebSockey-Key challenge is 16 random bytes, base64 encoded. 29 inline constexpr size_t kRawChallengeLength = 16; 30 31 // "Sec-WebSocket-Protocol" 32 extern const char kSecWebSocketProtocol[]; 33 34 // "Sec-WebSocket-Extensions" 35 extern const char kSecWebSocketExtensions[]; 36 37 // "Sec-WebSocket-Key" 38 extern const char kSecWebSocketKey[]; 39 40 // "Sec-WebSocket-Accept" 41 extern const char kSecWebSocketAccept[]; 42 43 // "Sec-WebSocket-Version" 44 extern const char kSecWebSocketVersion[]; 45 46 // This implementation only supports one version of the WebSocket protocol, 47 // "13", as specified in RFC6455. If support for multiple versions is added in 48 // future, it will probably no longer be worth having a constant for this. 49 extern const char kSupportedVersion[]; 50 51 // "Upgrade" 52 extern const char kUpgrade[]; 53 54 // "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" as defined in section 4.1 of 55 // RFC6455. 56 extern const char NET_EXPORT kWebSocketGuid[]; 57 58 // "websocket", as used in the "Upgrade:" header. This is always lowercase 59 // (except in obsolete versions of the protocol). 60 extern const char kWebSocketLowercase[]; 61 62 } // namespace net::websockets 63 64 #endif // NET_WEBSOCKETS_WEBSOCKET_HANDSHAKE_CONSTANTS_H_ 65