89 lines
3.0 KiB
Markdown
89 lines
3.0 KiB
Markdown
# Chronos - An efficient library for asynchronous programming
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[](https://github.com/status-im/nim-chronos/actions/workflows/ci.yml)
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[](https://opensource.org/licenses/Apache-2.0)
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[](https://opensource.org/licenses/MIT)
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## Introduction
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Chronos is an efficient [async/await](https://en.wikipedia.org/wiki/Async/await) framework for Nim. Features include:
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* Asynchronous socket and process I/O
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* HTTP server with SSL/TLS support out of the box (no OpenSSL needed)
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* Synchronization primitivies like queues, events and locks
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* Cancellation
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* Efficient dispatch pipeline with excellent multi-platform support
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* Exceptional error handling features, including `raises` tracking
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## Getting started
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Install `chronos` using `nimble`:
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```text
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nimble install chronos
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```
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or add a dependency to your `.nimble` file:
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```text
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requires "chronos"
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```
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and start using it:
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```nim
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import chronos/apps/http/httpclient
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proc retrievePage(uri: string): Future[string] {.async.} =
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# Create a new HTTP session
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let httpSession = HttpSessionRef.new()
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try:
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# Fetch page contents
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let resp = await httpSession.fetch(parseUri(uri))
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# Convert response to a string, assuming its encoding matches the terminal!
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bytesToString(resp.data)
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finally: # Close the session
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await noCancel(httpSession.closeWait())
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echo waitFor retrievePage(
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"https://raw.githubusercontent.com/status-im/nim-chronos/master/README.md")
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```
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## Documentation
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See the [user guide](https://status-im.github.io/nim-chronos/).
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## Projects using `chronos`
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* [libp2p](https://github.com/status-im/nim-libp2p) - Peer-to-Peer networking stack implemented in many languages
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* [presto](https://github.com/status-im/nim-presto) - REST API framework
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* [Scorper](https://github.com/bung87/scorper) - Web framework
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* [2DeFi](https://github.com/gogolxdong/2DeFi) - Decentralised file system
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* [websock](https://github.com/status-im/nim-websock/) - WebSocket library with lots of features
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`chronos` is available in the [Nim Playground](https://play.nim-lang.org/#ix=2TpS)
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Submit a PR to add yours!
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## TODO
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* Multithreading Stream/Datagram servers
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## Contributing
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When submitting pull requests, please add test cases for any new features or fixes and make sure `nimble test` is still able to execute the entire test suite successfully.
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`chronos` follows the [Status Nim Style Guide](https://status-im.github.io/nim-style-guide/).
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## License
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Licensed and distributed under either of
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* MIT license: [LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT
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or
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* Apache License, Version 2.0, ([LICENSE-APACHEv2](LICENSE-APACHEv2) or http://www.apache.org/licenses/LICENSE-2.0)
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at your option. These files may not be copied, modified, or distributed except according to those terms.
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