|  | /* | 
|  | *  Copyright 2019 The WebRTC project authors. All Rights Reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #ifndef PC_MEDIA_PROTOCOL_NAMES_H_ | 
|  | #define PC_MEDIA_PROTOCOL_NAMES_H_ | 
|  |  | 
|  | #include "absl/strings/string_view.h" | 
|  |  | 
|  | namespace cricket { | 
|  |  | 
|  | // Names or name prefixes of protocols as defined by SDP specifications. | 
|  | extern const char kMediaProtocolRtpPrefix[]; | 
|  | extern const char kMediaProtocolSctp[]; | 
|  | extern const char kMediaProtocolDtlsSctp[]; | 
|  | extern const char kMediaProtocolUdpDtlsSctp[]; | 
|  | extern const char kMediaProtocolTcpDtlsSctp[]; | 
|  |  | 
|  | bool IsDtlsSctp(absl::string_view protocol); | 
|  | bool IsPlainSctp(absl::string_view protocol); | 
|  |  | 
|  | // Returns true if the given media section protocol indicates use of RTP. | 
|  | bool IsRtpProtocol(absl::string_view protocol); | 
|  | // Returns true if the given media section protocol indicates use of SCTP. | 
|  | bool IsSctpProtocol(absl::string_view protocol); | 
|  |  | 
|  | }  // namespace cricket | 
|  |  | 
|  | #endif  // PC_MEDIA_PROTOCOL_NAMES_H_ |