Copyright 2022 Kaspersky Lab.
The gRPC version includes KasperskyOS modification of gRPC. The modification is based on the original version of grpc 1.48.0. You can find more detailed documentation and examples in the doc and examples directories respectively.
See INSTALL for installation instructions for various platforms.
See tools/run_tests for more guidance on how to run various test suites (e.g. unit tests, interop tests, benchmarks).
See helloworld/README for Hello World example on KasperskyOS.
This repository contains source code for gRPC libraries for multiple languages written on top of shared C core library src/core.
| Language | Source | Status | KasperskyOS adaptation |
|---|---|---|---|
| Shared C [core library] | src/core | 1.8 | Yes |
| C++ | src/cpp | 1.8 | Yes |
| Ruby | src/ruby | 1.8 | No |
| Python | src/python | 1.8 | No |
| PHP | src/php | 1.8 | No |
| C# | src/csharp | 1.8 | No |
| Objective-C | src/objective-c | 1.8 | No |
Java source code is in the grpc-java repository. Go source code is in the grpc-go repository. NodeJS source code is in the grpc-node repository. Please, pay attention that the Java, Go and NodeJS code has not be adapted for KaspersyOS.
Code examples for KasperskyOS are available in the examples/kos directory.
Remote Procedure Calls (RPCs) provide a useful abstraction for building distributed applications and services. The libraries in this repository provide a concrete implementation of the gRPC protocol, layered over HTTP/2. These libraries enable communication between clients and servers using any combination of the supported languages.
Developers using gRPC typically start with the description of an RPC service (a collection of methods), and generate client and server side interfaces which they use on the client-side and implement on the server side.
By default, gRPC uses Protocol Buffers as the gRPC Interface Definition Language (IDL) for describing both the service interface and the structure of the payload messages. It is possible to use other alternatives if desired.
Starting from an interface definition in a .proto file, gRPC provides Protocol Compiler plugins that generate Client- and Server-side APIs. gRPC users typically call into these APIs on the Client side and implement the corresponding API on the server side.
Synchronous RPC calls, that block until a response arrives from the server, are the closest approximation to the abstraction of a procedure call that RPC aspires to.
On the other hand, networks are inherently asynchronous and in many scenarios, it is desirable to have the ability to start RPCs without blocking the current thread.
The gRPC programming surface in most languages comes in both synchronous and asynchronous flavors.
gRPC supports streaming semantics, where either the client or the server (or both) send a stream of messages on a single RPC call. The most general case is Bidirectional Streaming where a single gRPC call establishes a stream where both the client and the server can send a stream of messages to each other. The streamed messages are delivered in the order they were sent.
The gRPC protocol specifies the abstract requirements for communication between clients and servers. A concrete embedding over HTTP/2 completes the picture by fleshing out the details of each of the required operations.
A gRPC comprises of a bidirectional stream of messages, initiated by the client. In the client-to-server direction, this stream begins with a mandatory Call Header, followed by optional Initial-Metadata, followed by zero or more Payload Messages. The server-to-client direction contains an optional Initial-Metadata, followed by zero or more Payload Messages terminated with a mandatory Status and optional Status-Metadata (or Trailing-Metadata).
The abstract gRPC protocol is implemented over HTTP/2. gRPC bidirectional streams are mapped to HTTP/2 streams. The contents of Call Header and Initial Metadata are sent as HTTP/2 headers and subject to HPACK compression. Payload Messages are serialized into a byte stream of length prefixed gRPC frames which are then fragmented into HTTP/2 frames at the sender and reassembled at the receiver. Status and Trailing-Metadata are sent as HTTP/2 trailing headers (or trailers).
gRPC inherits the flow control mechanisms in HTTP/2 and uses them to enable fine-grained control of the amount of memory used for buffering in-flight messages.
gRPC® is a registered trademark of The Linux Foundation in the United States and/or other countries.
Java is a trademark or registered trademark of Oracle Corporation and/or its affiliates. Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries. MacOS® is trademark of Apple Inc., registered in the U.S. and other countries and regions. Objective-C® is trademark of Apple Inc., registered in the U.S. and other countries and regions. Python® is a trademark or registered trademark of the Python Software Foundation. Windows™ is trademark of the Microsoft group of companies.
We'll follow the parent project contributing rules but would consider to accept only KasperskyOS-specific changes, so for that it is advised to use the following instruction.
See gRPC license here.