http compressions stage 2

src/main.rs

@@ -3,6 +3,7 @@
 use std::{ collections::HashMap, path::PathBuf, sync::Arc };
 use anyhow::{bail, Result};
 
+use itertools::Itertools;
 use tokio::{
     fs::File,
     io::{ AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader },
@@ -69,7 +70,7 @@ async fn process (mut stream: TcpStream, args: A) -> Result<()> {
     let mut data = data.into_inner();
 
     let headers = Headers::parse(&mut data).await;
-    let encoding = Encoding::from(headers.get("Accept-Encoding"));
+    let encoding = Encoding::parse(headers.get("Accept-Encoding"));
 
     println!("{:?}", headers);
     println!("{:?}", encoding);
@@ -153,10 +154,14 @@ enum Encoding {
 impl Encoding {
     pub fn header (&self) -> &'static str {
         match self {
-            Self::Gzip => "Content-Encoding: gzip",
+            Self::Gzip => "gzip",
             _ => d!()
         }
     }
+
+    pub fn parse (s: &str) -> Vec<Self> {
+        s.split(',').map(str::trim).map(From::from).collect()
+    }
 }
 
 impl From<&str> for Encoding {
@@ -202,7 +207,7 @@ enum Response {
     _404,
     _500,
     Empty,
-    TextPlain (String, Encoding),
+    TextPlain (String, Vec<Encoding>),
     OctetStream (Vec<u8>)
 }
 
@@ -245,11 +250,8 @@ impl Response {
                     f!("Content-Type: text/plain"),
                     format!("Content-Length: {}", text.len()),
                 ];
-
-                let enc = enc.header();
-
-                if !enc.is_empty() { v.push(enc.to_string()) }
-
+                let enc = enc.into_iter().map(Encoding::header).filter(|e| !e.is_empty()).join(", ");
+                if !enc.is_empty() { v.push(f!("Content-Encoding: {enc}")) }
                 v
             },
             Self::OctetStream(bytes) => vec![