1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _DNS_IDNSTLSSOCKET_H 18 #define _DNS_IDNSTLSSOCKET_H 19 20 #include <cstdint> 21 #include <cstddef> 22 23 #include <netdutils/Slice.h> 24 25 namespace android { 26 namespace net { 27 28 class IDnsTlsSocketObserver; 29 class DnsTlsSessionCache; 30 31 // A class for managing a TLS socket that sends and receives messages in 32 // [length][value] format, with a 2-byte length (i.e. DNS-over-TCP format). 33 // This interface is not aware of query-response pairing or anything else about DNS. 34 class IDnsTlsSocket { 35 public: 36 virtual ~IDnsTlsSocket() {}; 37 // Send a query on the provided SSL socket. |query| contains 38 // the body of a query, not including the ID bytes. This function will typically return before 39 // the query is actually sent. If this function fails, the observer will be 40 // notified that the socket is closed. 41 // Note that a true return value indicates successful sending, not receipt of a response. 42 virtual bool query(uint16_t id, const netdutils::Slice query) = 0; 43 }; 44 45 } // end of namespace net 46 } // end of namespace android 47 48 #endif // _DNS_IDNSTLSSOCKET_H 49
