microsoft/msquic
Msquic
MsQuic is a cross-platform, C-based implementation of the QUIC protocol. It provides a network library for establishing encrypted and authenticated transport links over UDP, integrating TLS to ensure all data flows between endpoints are encrypted.
The implementation utilizes a language-agnostic binding layer to support high-level languages including C#, Rust, and C++. It features connection-ID based migration to maintain active sessions when IP addresses or ports change, and employs multi-stream multiplexing to manage independent data flows within a single connection.
The library covers network transport primitives such as bidirectional stream exchange, connection listening, and unreliable datagram transmission. It also includes configurations for connection security and employs asynchronous event-driven I/O to optimize network throughput.
Features
- UDP Transport Implementations - Implements the QUIC protocol as a custom reliable transport layer over UDP for low-latency data delivery.
- C++ Networking Libraries - Acts as a low-level C networking toolkit with bindings for C++, C#, and Rust.
- QUIC Implementations - Implements the IETF QUIC transport protocol to provide encrypted, multiplexed links over UDP.
- Stream Multiplexing - Manages multiple independent data streams within a single connection to eliminate transport-level head-of-line blocking.
- Connection Migrators - Enables active network sessions to persist across changing IP addresses or ports using connection identifiers.
- C Network Protocol Implementations - Provides a high-performance implementation of the QUIC network protocol written in C for cross-platform portability.
- Cross-Platform C Libraries - Provides a portable C library for low-level networking that works consistently across multiple operating systems.
- TLS 1.3 Protocol Implementations - Integrates a TLS 1.3 implementation directly into the connection handshake to ensure mandatory encryption for all streams.
- Secure Connection Handlers - Implements secure connection handlers that manage TLS encryption and the QUIC handshake process.
- TLS Traffic Encryption - Integrates TLS parameters to ensure all data flows between endpoints are fully encrypted.
- Multiplexed Stream Exchanges - Enables sending and receiving application information through concurrent unidirectional or bidirectional streams.
- Data Throughput Optimizers - Provides network throughput optimization through asynchronous I/O and kernel stack bypass techniques.
- High-Throughput Network Engineering - Optimizes data transfer rates and minimizes latency through asynchronous I/O and kernel bypass techniques.
- Network Listeners - Provides the ability to listen for and accept incoming network requests on specific addresses and protocols.
- Connection Establishment - Handles the initiation and finalization of encrypted transport links during the QUIC handshake phase.
- Data Streaming - Supports the transmission of reliable and unreliable data across parallel streams using zero-round-trip handshakes.
- Unreliable Datagram Transports - Allows the transmission of secure data packets that do not require retransmission, provided the capability is negotiated.
- Multi-Language Binding Layers - Exposes a stable C API surface that allows integration with high-level languages including C#, Rust, and C++.
- Stream Encryption and Decryption - Provides secure, encrypted data streams using integrated TLS security and authenticated handshakes.
- Event-Driven I/O - Implements an asynchronous event-driven I/O model to handle high-concurrency network operations with minimal thread overhead.
