Thanks Brad and yes it is correct, needed to instantiate it. Problem solved...
On Wednesday, August 30, 2023 at 4:32:30 PM UTC-5 Brad Town wrote: > I think the problem is that the Illuscio::FileChunk object is created on > the stack, StartWrite is called with that chunk, and the object goes out > of scope. (I can't be sure because I don't know how Illuscio::FileChunk is > implemented, but I'm assuming it's writing the data to a buffer internal to > Illuscio::FileChunk.) I believe the write operation is trying to access a > buffer that's no longer available. > > Brad Town > > On Wed, Aug 23, 2023 at 3:55 PM Pedro Alfonso <pedroalfo...@gmail.com> > wrote: > >> I'm getting below error ("Bus error"), when running the c++ server: >> >> dev-telemetry@telemetry build % ./file_streaming_server >> >> >> Server listening on 0.0.0.0:8070 >> >> Buffer contents: 67 76 68 46 73 76 76 85 83 67 73 79 2 0 0 0 104 69 0 0 >> 27 0 0 0 -35 -65 -93 2 0 0 0 0 -17 -63 88 71 0 0 0 0 16 8 0 0 0 0 0 0 0 0 0 >> 0 0 0 0 0 0 0 0 0 100 -68 75 12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 >> 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 78 -65 109 76 53 0 0 -96 -123 19 0 0 >> 0 0 0 4 -97 5 0 0 0 0 0 60 -37 117 -66 -64 32 -107 57 -96 -73 -31 -67 68 97 >> 126 62 -120 67 -6 62 88 -80 -63 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 >> 1 0 0 0 0 78 0 0 -40 83 0 0 -92 36 25 0 0 0 0 0 -56 -41 8 0 0 0 0 0 60 -37 >> 117 -66 -64 32 -107 57 -96 -73 -31 -67 -128 96 -120 59 -48 104 122 62 112 >> 66 9 62 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 2 0 0 0 0 78 0 0 25 35 0 0 >> 108 -4 33 0 0 0 0 0 -93 -77 3 0 0 0 0 0 60 -37 117 -66 -64 32 -107 57 -96 >> -73 -31 -67 56 -104 -15 -67 97 -77 -6 61 0 53 67 60 0 0 0 0 0 0 0 0 0 0 0 0 >> 0 0 0 0 4 0 0 0 3 0 0 0 0 78 0 0 106 18 0 0 15 -80 37 0 0 0 0 0 46 -15 1 0 >> 0 0 0 0 60 -37 117 -66 -64 32 -107 57 0 81 73 -67 -84 83 55 -66 -127 72 123 >> 61 0 53 67 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 4 0 0 0 0 78 0 0 21 >> 27 0 0 61 -95 39 0 0 0 0 0 55 -37 2 0 0 0 0 0 60 -37 117 -66 -61 114 -4 60 >> -64 -125 -104 -68 116 -105 86 -66 -127 72 123 61 0 53 67 60 0 0 0 0 0 0 0 0 >> 0 0 0 0 0 0 0 0 6 0 0 0 5 0 0 0 1 78 0 0 -55 0 0 0 116 124 42 0 0 0 0 0 51 >> 21 0 0 0 0 0 0 60 -37 117 -66 -15 -64 60 61 -64 -125 -104 -68 88 57 102 -66 >> -127 72 123 61 0 -91 91 -69 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 0 0 0 5 0 0 0 >> 0 78 0 0 83 15 0 0 -89 -111 42 0 0 0 0 0 -63 -99 1 0 0 0 0 0 60 -37 117 -66 >> -15 -64 60 61 0 -91 91 -69 88 57 102 -66 -127 72 123 61 0 53 67 60 0 0 0 0 >> 0 0 0 0 0 0 0 0 0 0 0 0 8 0 0 0 7 0 0 0 1 78 0 0 -91 2 0 0 104 47 44 0 0 0 >> 0 0 103 71 0 0 0 0 0 0 74 10 110 -66 -15 -64 60 61 -64 75 -116 59 88 57 102 >> -66 -71 4 92 61 0 53 67 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 0 0 0 7 0 0 0 >> 1 78 0 0 -103 9 0 0 -49 118 44 0 0 0 0 0 35 3 1 0 0 0 0 0 74 10 110 -66 -71 >> 4 92 61 0 -91 91 -69 88 57 102 -66 -127 72 123 61 -64 75 -116 59 0 0 0 0 0 >> 0 0 0 0 0 0 0 0 0 0 0 10 0 0 0 7 0 0 0 1 78 0 0 59 16 0 0 -14 121 45 0 0 0 >> 0 0 57 -74 1 0 0 0 0 0 74 10 110 -66 -71 4 92 61 -64 75 -116 59 88 57 102 >> -66 -127 72 123 61 0 53 67 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 0 0 0 5 0 >> 0 0 0 78 0 0 52 26 0 0 43 48 47 0 0 0 0 0 124 -61 2 0 0 0 0 0 88 57 102 -66 >> -61 114 -4 60 0 -91 91 -69 116 -105 86 -66 -15 -64 60 61 0 53 67 60 0 0 0 0 >> 0 0 0 0 0 0 0 0 0 0 0 0 12 0 0 0 11 0 0 0 1 78 0 0 6 0 0 0 -89 -13 49 0 0 0 >> 0 0 -94 0 0 0 0 0 0 0 88 57 102 -66 -61 114 -4 60 -64 75 -116 59 102 104 94 >> -66 41 125 29 61 0 53 67 60 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13 0 0 0 11 0 0 >> 0 1 78 0 0 30 0 0 0 73 -12 49 0 0 0 0 0 42 3 0 0 0 0 0 0 88 57 102 -66 41 >> 125 29 61 0 -91 91 -69 102 104 94 -66 -15 -64 60 61 -64 75 -116 59 0 0 0 0 >> 0 0 0 0 >> >> Buffer size: 1024 bytes >> >> Read size: 1024 bytes >> >> zsh: bus error ./file_streaming_server >> >> dev-telemetry@telemetry build % >> >> Above I'm printing the buffer's content and size I'm trying to stream to >> the Swift client. >> >> And here's the server code: >> >> #include <iostream> >> #include <memory> >> #include <string> >> #include <fstream> >> #include <dirent.h> >> #include <algorithm> >> >> #include <grpc/grpc.h> >> #include <grpcpp/security/server_credentials.h> >> #include <grpcpp/ext/proto_server_reflection_plugin.h> >> #include <grpcpp/server.h> >> #include <grpcpp/server_builder.h> >> #include <grpcpp/server_context.h> >> #include "file_streaming.grpc.pb.h" >> >> using grpc::CallbackServerContext; >> using grpc::Server; >> using grpc::ServerUnaryReactor; >> using grpc::ServerBuilder; >> using grpc::ServerContext; >> using grpc::ServerReader; >> using grpc::ServerReaderWriter; >> using grpc::ServerWriter; >> using grpc::Status; >> >> class FileStreamingImpl final : public >> Illuscio::FileStreaming::CallbackService { >> public: >> grpc::ServerWriteReactor<Illuscio::FileChunk>* >> GetFile(grpc::CallbackServerContext* context, const Illuscio::FileRequest* >> request) override { >> class FileSplitter : public >> grpc::ServerWriteReactor<Illuscio::FileChunk> { >> private: >> const int chunk_size = 1024; >> char buffer[1024]; >> std::ifstream file; >> // >> public: >> FileSplitter(const std::string& file_path) : file(file_path, >> std::ios::binary) { >> try { >> if (!file) { >> Finish(grpc::Status(grpc::StatusCode::INTERNAL, "Error >> opening file")); >> return; >> } >> >> NextWrite(); >> } catch (const std::exception& ex) { >> Finish(grpc::Status(grpc::StatusCode::INTERNAL, ex.what())); >> } >> } >> // >> void OnDone() override { delete this; } >> void OnWriteDone(bool /*ok*/) override { >> std::cout << "Another write..." << std::endl; >> NextWrite(); >> } >> >> private: >> void NextWrite() { >> file.read(buffer, chunk_size); >> const int read_size = static_cast<int>(file.gcount()); >> >> if (read_size > 0) { >> Illuscio::FileChunk chunk; >> chunk.set_chunk_data(buffer, read_size); >> std::cout << "Buffer contents: "; >> // >> for (int i = 0; i < read_size; ++i) { >> std::cout << static_cast<int>(buffer[i]) << " "; >> } >> std::cout << std::endl; >> std::cout << "Buffer size: " << sizeof(buffer) << " >> bytes" << std::endl; >> std::cout << "Read size: " << read_size << " bytes" << >> std::endl; >> // >> StartWrite(&chunk); >> } else { >> // All data has been sent, finish the stream >> Finish(grpc::Status::OK); >> } >> } >> }; >> >> return new FileSplitter(request->file_path()); >> } >> >> ....... >> >> I have tried with several buffer sizes from 1024 bytes to 1MB, but still >> getting the "Bus error" message. >> >> Any thoughts? >> >> >> Thanks in advance. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "grpc.io" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to grpc-io+u...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/grpc-io/5edbaedb-681d-44a3-ba1f-8e8d0c896b69n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/grpc-io/5edbaedb-681d-44a3-ba1f-8e8d0c896b69n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. 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