1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include "pw_rpc_transport/rpc_transport.h" 17 #include "pw_status/status.h" 18 #include "pw_status/try.h" 19 #include "pw_stream/stream.h" 20 21 namespace pw::rpc { 22 23 // RpcFrameSender that wraps a stream::Writer. 24 template <size_t kMtu> 25 class StreamRpcFrameSender : public RpcFrameSender { 26 public: StreamRpcFrameSender(stream::Writer & writer)27 StreamRpcFrameSender(stream::Writer& writer) : writer_(writer) {} 28 MaximumTransmissionUnit()29 size_t MaximumTransmissionUnit() const override { return kMtu; } 30 Send(RpcFrame frame)31 Status Send(RpcFrame frame) override { 32 if (!frame.header.empty()) { 33 PW_TRY(writer_.Write(frame.header)); 34 } 35 return writer_.Write(frame.payload); 36 } 37 38 private: 39 stream::Writer& writer_; 40 }; 41 42 } // namespace pw::rpc 43