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actix-website/docs/conn_lifecycle.md

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Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
---
title: Connection Lifecycle
---
# Architecture overview
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After Server has started listening to all sockets, [`Accept`][accept] and [`Worker`][worker] are two main loops responsible for processing incoming client connections.
Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
fmt
2022-02-26 04:41:49 +00:00
Once connection accepted Application level protocol processing happens in a protocol specific [`Dispatcher`][dispatcher] loop spawned from [`Worker`][worker].
Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
Please note, below diagrams are outlining happy-path scenarios only.
![](/img/diagrams/connection_overview.svg)
## Accept loop in more detail
![](/img/diagrams/connection_accept.svg)
fmt
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Most of code implementation resides in [`actix-server`][server] crate for struct [`Accept`][accept].
Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
## Worker loop in more detail
![](/img/diagrams/connection_worker.svg)
fmt
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Most of code implementation resides in [`actix-server`][server] crate for struct [`Worker`][worker].
Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
## Request loop roughly
![](/img/diagrams/connection_request.svg)
Fix nextup links (#153) * Fix page weights * Fix nextup link generation
2020-02-01 21:22:11 +01:00
Most of code implementation for request loop resides in [`actix-web`][web] and [`actix-http`][http] crates.
Architecture diagrams of HttpServer and Connection lifecycle (#148) * add arch diagrams and menu * fix colors for arch diagrams * refine architecture diagrams, ready for review * capitalize titles and add mmdc instruction * apply code review requested changes * Add links to accept, worker and dispatcher too
2020-01-28 14:36:35 +03:00
[server]: https://crates.io/crates/actix-server
[web]: https://crates.io/crates/actix-web
[http]: https://crates.io/crates/actix-http
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[accept]: https://github.com/actix/actix-net/blob/master/actix-server/src/accept.rs
[worker]: https://github.com/actix/actix-net/blob/master/actix-server/src/worker.rs
[dispatcher]: https://github.com/actix/actix-web/blob/master/actix-http/src/h1/dispatcher.rs
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