Add static Rust example

Also, fix some broken README links

Author: fwsGonzo

README.md

@@ -45,12 +45,12 @@ There are several examples in the documentation, as well how to use the VMOD fro
 
 - C: Go into the [c folder](c) and edit [hello_world.c](c/hello_world.c)
 - C++: Go into the [cpp folder](cpp) and edit [hello_world.cpp](cpp/src/hello_world.cpp)
-- Go: Go into the [go folder](go) and edit [hello_world.go](go/varnish/hello_world.go)
+- Go: Go into the [go folder](go) and edit [goexample.go](go/goexample/goexample.go)
 - Kotlin: Go into the [kotlin folder](kotlin) and edit [main.kt](kotlin/main.kt)
 - Nelua: Go into the [nelua folder](nelua) and edit [example.nelua](nelua/example.nelua)
 - Nim: Go into the [nim folder](nim) and edit [hello.nim](nim/hello.nim)
 - JavaScript: Go into the [javascript folder](javascript) and edit [chat.js](javascript/src/chat.js)
-- Rust: Go into the [rust folder](rust) and edit [main.rs](rust/src/main.rs)
+- Rust: Go into the [rust folder](rust) and edit [main.rs](rust/static/src/main.rs)
 - Zig: Go into the [zig folder](zig) and edit [example.zig](zig/example.zig)
 
 You can find the C API here: [kvm_api.h](kvm_api.h). It contains the complete API with some explanations and examples. The API is not necessarily intended for end-users, but it is required for those who wants to integrate other languages.

rust/static/.cargo/config

@@ -0,0 +1,2 @@
+[target.x86_64-unknown-linux-gnu]
+rustflags = ["-C", "target-feature=+crt-static", "-C", "link_arg=-no-pie"]

rust/static/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "demo"
+version = "0.1.0"
+authors = ["gonzo"]
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+png = "0.15.3"
+libc = "0.2"
+
+[profile.release]
+lto=true
+opt-level=2
+#debug=true

rust/static/README.md

@@ -0,0 +1,3 @@
+# glibc-based static Rust example
+
+Builds a static executable with a standard toolchain, which is executable in the TinyKVM VMOD.

rust/static/build.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+set -e
+cargo build --release

rust/static/src/main.rs

@@ -0,0 +1,21 @@
+mod varnish;
+
+fn on_get(_url: &str, _arg: &str) -> !
+{
+	let response = "Hello, world!";
+
+	varnish::backend_response_str(200, "text/plain", response);
+}
+
+fn on_post(_url: &str, _arg: &str, ctype: &str, data: &mut [u8]) -> !
+{
+	varnish::set_cacheable(false, 1.0, 0.0, 0.0);
+	varnish::backend_response(200, ctype, data);
+}
+
+fn main()
+{
+	varnish::set_backend_get(on_get);
+	varnish::set_backend_post(on_post);
+	varnish::wait_for_requests();
+}

rust/static/src/varnish.rs

@@ -0,0 +1 @@
+../../api/varnish.rs