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105 lines
4.5 KiB
Markdown
105 lines
4.5 KiB
Markdown
# Actix web [](https://travis-ci.org/actix/actix-web) [](https://ci.appveyor.com/project/fafhrd91/actix-web-hdy9d/branch/master) [](https://codecov.io/gh/actix/actix-web) [](https://crates.io/crates/actix-web)
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Actix web is a small, fast, down-to-earth, open source rust web framework.
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```rust,ignore
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use actix_web::*;
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fn index(req: HttpRequest) -> String {
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format!("Hello {}!", &req.match_info()["name"])
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}
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fn main() {
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HttpServer::new(
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|| Application::new()
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.resource("/{name}", |r| r.f(index)))
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.serve::<_, ()>("127.0.0.1:8080");
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}
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```
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## Documentation
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* [User Guide](http://actix.github.io/actix-web/guide/)
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* [API Documentation (Development)](http://actix.github.io/actix-web/actix_web/)
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* [API Documentation (Releases)](https://docs.rs/actix-web/)
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* Cargo package: [actix-web](https://crates.io/crates/actix-web)
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* Minimum supported Rust version: 1.20 or later
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## Features
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* Supported *HTTP/1.x* and *HTTP/2.0* protocols
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* Streaming and pipelining
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* Keep-alive and slow requests handling
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* [WebSockets](https://actix.github.io/actix-web/actix_web/ws/index.html)
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* Transparent content compression/decompression (br, gzip, deflate)
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* Configurable request routing
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* Multipart streams
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* Middlewares (Logger, Session, DefaultHeaders)
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* Built on top of [Actix](https://github.com/actix/actix).
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## HTTP/2
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Actix web automatically upgrades connection to `http/2` if possible.
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### Negotiation
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`HTTP/2` protocol over tls without prior knowlage requires
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[tls alpn](https://tools.ietf.org/html/rfc7301). At the moment only
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`rust-openssl` supports alpn.
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```toml
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[dependencies]
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actix-web = { git = "https://github.com/actix/actix-web", features=["alpn"] }
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```
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Upgrade to `http/2` schema described in
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[rfc section 3.2](https://http2.github.io/http2-spec/#rfc.section.3.2) is not supported.
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Starting `http/2` with prior knowledge is supported for both clear text connection
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and tls connection. [rfc section 3.4](https://http2.github.io/http2-spec/#rfc.section.3.4)
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[tls example](https://github.com/actix/actix-web/tree/master/examples/tls)
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## Benchmarks
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This is totally unscientific and probably pretty useless. In real world business
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logic would dominate on performance side. But in any case. i took several web frameworks
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for rust and used theirs *hello world* example. All projects are compiled with
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`--release` parameter. I didnt test single thread performance for iron and rocket.
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As a testing tool i used `wrk` and following commands
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`wrk -t20 -c100 -d10s http://127.0.0.1:8080/`
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`wrk -t20 -c100 -d10s http://127.0.0.1:8080/ -s ./pipeline.lua --latency -- / 128`
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I ran all tests on localhost on MacBook Pro late 2017. It has 4 cpu and 8 logical cpus.
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Each result is best of five runs. All measurements are req/sec.
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Name | 1 thread | 1 pipeline | 3 thread | 3 pipeline | 8 thread | 8 pipeline
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---- | -------- | ---------- | -------- | ---------- | -------- | ----------
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Actix | 81.400 | 710.200 | 121.000 | 1.684.000 | 106.300 | 2.206.000
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Gotham | 61..000 | 178.000 | | | |
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Iron | | | | | 94.500 | 78.000
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Rocket | | | | | 95.500 | failed
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Shio | 71.800 | 317.800 | | | | |
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tokio-minihttp | 106.900 | 1.047.000 | | | |
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Some notes on results. Iron and Rocket got tested with 8 threads,
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which showed best results. Gothan and tokio-minihttp seem does not support
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multithreading, or at least i couldn't figured out. I manually enabled pipelining
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for *Shio* and Gotham*. While shio seems support multithreading, but it showed
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absolutly same results for any how number of threads (maybe macos?)
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Rocket completely failed in pipelined tests.
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## Examples
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* [Basic](https://github.com/actix/actix-web/tree/master/examples/basic.rs)
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* [Stateful](https://github.com/actix/actix-web/tree/master/examples/state.rs)
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* [Mulitpart streams](https://github.com/actix/actix-web/tree/master/examples/multipart)
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* [Simple websocket session](https://github.com/actix/actix-web/tree/master/examples/websocket.rs)
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* [Tcp/Websocket chat](https://github.com/actix/actix-web/tree/master/examples/websocket-chat)
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* [SockJS Server](https://github.com/actix/actix-sockjs)
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## License
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Actix web is licensed under the [Apache-2.0 license](http://opensource.org/licenses/APACHE-2.0).
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