use std::collections::HashMap; use hyper::Client as HyperClient; use mlua::{Error, Lua, Result, Thread}; #[tokio::main] async fn main() -> Result<()> { let lua = Lua::new(); let fetch_url = lua.create_async_function(|lua, uri: String| async move { let client = HyperClient::new(); let uri = uri.parse().map_err(Error::external)?; let resp = client.get(uri).await.map_err(Error::external)?; let lua_resp = lua.create_table()?; lua_resp.set("status", resp.status().as_u16())?; let mut headers = HashMap::new(); for (key, value) in resp.headers().iter() { headers .entry(key.as_str()) .or_insert(Vec::new()) .push(value.to_str().unwrap()); } lua_resp.set("headers", headers)?; let buf = hyper::body::to_bytes(resp).await.map_err(Error::external)?; lua_resp.set("body", String::from_utf8_lossy(&buf).into_owned())?; Ok(lua_resp) })?; let globals = lua.globals(); globals.set("fetch_url", fetch_url)?; let thread = lua .load( r#" coroutine.create(function () local res = fetch_url("http://httpbin.org/ip"); print(res.status) for key, vals in pairs(res.headers) do for _, val in ipairs(vals) do print(key..": "..val) end end print(res.body) end) "#, ) .eval::()?; thread.into_async(()).await }