Merge pull request #347 from ifconfig/master

Codeblock 20-2

src/ch20-01-single-threaded.md

@@ -155,9 +155,10 @@ dass er wie Codeblock 20-2 aussieht.
 <span class="filename">Dateiname: src/main.rs</span>
 
 ```rust,no_run
-use std::io::prelude::*;
-use std::net::TcpListener;
-use std::net::TcpStream;
+use std::{
+    io::{prelude::*, BufReader},
+    net::{TcpListener, TcpStream},
+};
 
 fn main() {
     let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
@@ -170,11 +171,14 @@ fn main() {
 }
 
 fn handle_connection(mut stream: TcpStream) {
-    let mut buffer = [0; 1024];
-
-    stream.read(&mut buffer).unwrap();
+    let buf_reader = BufReader::new(&mut stream);
+    let http_request: Vec<_> = buf_reader
+        .lines()
+        .map(|result| result.unwrap())
+        .take_while(|line| !line.is_empty())
+        .collect();
 
-    println!("Request: {}", String::from_utf8_lossy(&buffer[..]));
+    println!("Request: {:#?}", http_request);
 }
 ```