src/doc/book/listings/ch20-web-server/listing-20-09/src/main.rs

   1 use std::fs;
   2 use std::io::prelude::*;
   3 use std::net::TcpListener;
   4 use std::net::TcpStream;
   5
   6 fn main() {
   7     let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
   8
   9     for stream in listener.incoming() {
  10         let stream = stream.unwrap();
  11
  12         handle_connection(stream);
  13     }
  14 }
  15
  16 // ANCHOR: here
  17 // --snip--
  18
  19 fn handle_connection(mut stream: TcpStream) {
  20     // --snip--
  21
  22     // ANCHOR_END: here
  23     let mut buffer = [0; 1024];
  24     stream.read(&mut buffer).unwrap();
  25
  26     let get = b"GET / HTTP/1.1\r\n";
  27
  28     // ANCHOR: here
  29     let (status_line, filename) = if buffer.starts_with(get) {
  30         ("HTTP/1.1 200 OK", "hello.html")
  31     } else {
  32         ("HTTP/1.1 404 NOT FOUND", "404.html")
  33     };
  34
  35     let contents = fs::read_to_string(filename).unwrap();
  36
  37     let response = format!(
  38         "{}\r\nContent-Length: {}\r\n\r\n{}",
  39         status_line,
  40         contents.len(),
  41         contents
  42     );
  43
  44     stream.write(response.as_bytes()).unwrap();
  45     stream.flush().unwrap();
  46 }
  47 // ANCHOR_END: here