Magicodes.IE
Protobuf
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| Magicodes.IE | Protobuf | |
|---|---|---|
| - | 171 | |
| 2,031 | 63,586 | |
| 1.1% | 0.8% | |
| 7.8 | 10.0 | |
| 3 months ago | about 6 hours ago | |
| C# | C++ | |
| MIT License | GNU General Public License v3.0 or later |
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Magicodes.IE
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Protobuf
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Reverse Engineering Protobuf Definitions from Compiled Binaries
For at least 4 years protobuf has had decent support for self-describing messages (very similar to avro) as well as reflection
https://github.com/protocolbuffers/protobuf/blob/main/src/go...
Xgooglers trying to make do on the cheap will just create a Union of all their messages and include the message def in a self-describing message pattern. Super-sensitive network I/O can elide the message def (empty buffer) and any for RecordIO clone well file compression takes care of the definition.
Definitely useful to be able to dig out old defs but protobuf maintainers have surprisingly added useful features so you don’t have to.
Bonus points tho for extracting the protobuf defs that e.g. Apple bakes into their binaries.
- Show HN: AuthWin – Authenticator App for Windows
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Create Production-Ready SDKs With gRPC Gateway
gRPC Gateway is a protoc plugin that reads gRPC service definitions and generates a reverse proxy server that translates a RESTful JSON API into gRPC.
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Create Production-Ready SDKs with Goa
To use more recent versions of protoc in future applications, you can download them from the Protobuf repository.
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Roll your own auth with Rust and Protobuf
Use the Protobuf CLI protoc and the plugin protoc-gen-tonic.
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Add extra stuff to a “standard” encoding? Sure, why not
> didn’t find any standard for separating protobuf messages
The fact that protobufs are not self-delimiting is an endless source of frustration, but I know of 2 standards:
- SerializeDelimited* is part of the protobuf library: https://github.com/protocolbuffers/protobuf/blob/main/src/go...
- Riegeli is "a file format for storing a sequence of string records, typically serialized protocol buffers. It supports dense compression, fast decoding, seeking, detection and optional skipping of data corruption, filtering of proto message fields for even faster decoding, and parallel encoding": https://github.com/google/riegeli
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Block YouTube Ads on AppleTV by Decrypting and Stripping Ads from Profobuf
It looks like it is in fact universal. Just glancing at the code here, it looks like the tool searches any arbitrary file for bytes that look like encoded protobuf descriptors, specifically looking for bytes that are plausibly the beginning of a FileDescriptorProto message defined here:
https://github.com/protocolbuffers/protobuf/blob/main/src/go...
This takes advantage of the fact that such descriptors are commonly compiled into programs that use protobuf. The descriptors are usually embedded as constant byte arrays. That said, not all protobuf implementations embed the descriptors and those that do often have an option to inhibit such embedding (at the expense of losing some dynamic introspection features).
- How to learn to use protoc in 21 easily infuriating steps
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What's involved in protobuf encoding?
Not much. You can check the source code in https://github.com/protocolbuffers/protobuf. For example, for serializing a boolean in C#: https://github.com/protocolbuffers/protobuf/blob/main/csharp/src/Google.Protobuf/WritingPrimitives.cs#L165. Strings and objects are a bit more complicated, but it is all about turning the data into its byte representation.
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Trying To Solve The Confusion of Choice Between gRPC vs REST🕵
One of the key feature of gRPC is protobuf .proto file(nothing but just a contract for me between two communicator code components) This file and protobuff compiler is so mature, then it generates a direct client implementation using protoccompiler. ref
What are some alternatives?
MessagePack for C# (.NET, .NET Core, Unity, Xamarin) - Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
FlatBuffers - FlatBuffers: Memory Efficient Serialization Library
FileHelpers - The FileHelpers are a free and easy to use .NET library to read/write data from fixed length or delimited records in files, strings or streams
SBE - Simple Binary Encoding (SBE) - High Performance Message Codec
Bond - Bond is a cross-platform framework for working with schematized data. It supports cross-language de/serialization and powerful generic mechanisms for efficiently manipulating data. Bond is broadly used at Microsoft in high scale services.
MessagePack - MessagePack implementation for C and C++ / msgpack.org[C/C++]
FsPickler - A fast multi-format message serializer for .NET
cereal - A C++11 library for serialization
ProtoBuf - C# code generator for reading and writing the protocol buffers format
Apache Parquet - Apache Parquet
Ceras - Universal binary serializer for a wide variety of scenarios https://discord.gg/FGaCX4c