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It is cross-platform, written in C and designed to be a general purpose QUIC library. MsQuic also has C++ API wrapper classes and exposes interop layers for both [Rust](https://docs.rs/msquic/latest/msquic/) and C#.\n\n\u003e [!TIP]\n\u003e You are using MsQuic? Let us know! Knowing our users lets us prioritize work and keep improving MsQuic in the best possible direction.\n\u003e Post in the [Discussion](https://github.com/microsoft/msquic/discussions/4963) to say hello and give us a wave on [Discord](https://discord.gg/YGAtCwTSsc)!\n\n## Protocol Features\n\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9000\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9000)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9001\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9001)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9002\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9002)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9221\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9221)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9287\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9287)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9368\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9368)\n[![](https://img.shields.io/static/v1?label=RFC\u0026message=9369\u0026color=brightgreen)](https://tools.ietf.org/html/rfc9369)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=Load%20Balancers\u0026color=blue)](https://tools.ietf.org/html/draft-ietf-quic-load-balancers)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=ACK%20Frequency\u0026color=blue)](https://tools.ietf.org/html/draft-ietf-quic-ack-frequency)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=Disable%20Encryption\u0026color=blueviolet)](https://tools.ietf.org/html/draft-banks-quic-disable-encryption)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=Performance\u0026color=blueviolet)](https://tools.ietf.org/html/draft-banks-quic-performance)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=CIBIR\u0026color=blueviolet)](https://tools.ietf.org/html/draft-banks-quic-cibir)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=Timestamps\u0026color=blueviolet)](https://tools.ietf.org/html/draft-huitema-quic-ts)\n[![](https://img.shields.io/static/v1?label=Draft\u0026message=ReliableReset\u0026color=blueviolet)](https://datatracker.ietf.org/doc/draft-ietf-quic-reliable-stream-reset/)\n\nQUIC has many benefits when compared to existing \"TLS over TCP\" scenarios:\n\n  * All packets are encrypted and handshake is authenticated with TLS 1.3.\n  * Parallel streams of (reliable and unreliable) application data.\n  * Exchange application data in the first round trip (0-RTT).\n  * Improved congestion control and loss recovery.\n  * Survives a change in the clients IP address or port.\n  * Stateless load balancing.\n  * Easily extendable for new features and extensions.\n\n## Library Features\n\nMsQuic has several features that differentiates it from other QUIC implementations:\n\n  * Optimized for client and server.\n  * Optimized for maximal throughput and minimal latency.\n  * Asynchronous IO.\n  * Receive side scaling ([RSS](https://docs.microsoft.com/en-us/windows-hardware/drivers/network/introduction-to-receive-side-scaling)) support.\n  * UDP send and receive coalescing support.\n  * Kernel stack bypass via [XDP](https://github.com/microsoft/xdp-for-windows?tab=readme-ov-file#xdp-for-windows).\n\n# Documentation\n\n  * For platform support details, see the [Platforms docs](./docs/Platforms.md).\n  * For release details, see the [Release docs](./docs/Release.md).\n  * For performance data, see the [Performance dashboard](https://aka.ms/msquicperformance).\n  * For building the library, see the [Build docs](./docs/BUILD.md).\n  * For testing the library, see the [Testing docs](./docs/TEST.md).\n  * For using the API, see the [API docs](./docs/API.md) or the [Sample](./src/tools/sample/sample.c).\n  * For running a sample server and client app, see the [Quick Start Guide](./docs/Sample.md).\n  * For deploying QUIC, see the [Deployment docs](./docs/Deployment.md).\n  * For diagnosing issues, see the [Diagnostics docs](./docs/Diagnostics.md) and the [Trouble Shooting Guide](./docs/TroubleShootingGuide.md).\n  * For other frequently asked questions, see the [FAQs](./docs/FAQ.md).\n\n# Contributing\n\nFor information on contributing, please see our [contribution guidelines](./.github/CONTRIBUTING.md). Feel free to take a look at our [Good First Issues](https://github.com/microsoft/msquic/labels/good%20first%20issue) list if you're looking for somewhere to start. If you'd just like to talk, come chat with us [on Discord](https://discord.gg/YGAtCwTSsc).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmicrosoft%2Fmsquic","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmicrosoft%2Fmsquic","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmicrosoft%2Fmsquic/lists"}