_posts/2023-12-28-cargo-script-and-cgi.md

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-title: "cargo script and cgi"
-published_date: "2023-12-28 18:30:00 +0200"
-layout: post.liquid
-data:
-  route: blog
-excerpt: |
-  Everything old is new again.
-  These days things get deployed as Cloud Functions, Lambdas or whatever FaaS it is today.
-  But those from the old days simply stuck with CGI and that's easily possible with Rust too.
----
-
-Everything old is new again.
-These days things get deployed as Cloud Functions, Lambdas or whatever [FaaS](https://en.wikipedia.org/wiki/Function_as_a_service) it is today.
-But those from the old days [simply stuck with CGI](https://rednafi.com/go/reminiscing_cgi_scripts/).
-
-Modern[^1] Rust is perfect for that kind of world!
-Cargo now has support for single-file packages ([RFC 3424]),
-which allows you to stuff all your code into a single `.rs` file and then run that.
-It even caches the built binary, so it's efficient enough to run on every request.
-
-I went ahead and updated the [cgi] crate ([my fork here][cgi-fork]).
-Now all it takes is this little bit of Rust code:
-
-````rust
-#!/usr/bin/env -S cargo +nightly -q -Zscript
-```cargo
-[dependencies]
-cgi = { git = "https://github.com/badboy/rust-cgi" }
-```
-
-#[cgi::main]
-fn main(_request: cgi::Request) -> cgi::Response {
-    cgi::text_response(200, "Hello World!")
-}
-````
-
-Install the [fcgiwrap] tool, follow the instructions to configure Nginx and voilà:
-<https://fnordig.de/cgi-bin/hello-world.rs>
-
-Need some state? Throw in a database and you can keep track of that too:
-<https://fnordig.de/cgi-bin/counter.rs>
-The source code is [available in a Gist][gist]. That's barely 50 lines (plus dependencies).
-
-Go deploy some cloud functions ... I mean lambdas ... I mean CGI scripts!
-
-[RFC 3424]: https://github.com/rust-lang/rfcs/blob/798ba4e1ef2175400e4c029cf952aa2d6df96f45/text/3424-cargo-script.md
-[fcgiwrap]: https://www.nginx.com/resources/wiki/start/topics/examples/fcgiwrap/
-[cgi]: https://crates.io/crates/cgi
-[cgi-fork]: https://github.com/badboy/rust-cgi
-[hello-world.rs]: https://fnordig.de/cgi-bin/hello-world.rs
-[gist]: https://gist.github.com/badboy/13dae661300e7e09b6f5430297fc341c
-
----
-
-_Footnotes:_
-
-[^1]: Nightly.

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