#10 a conditional response

call.http

@@ -1 +1,3 @@
 GET http://127.0.0.1:7878/
+###
+POST http://127.0.0.1:7878/

src/main.rs

@@ -1,14 +1,14 @@
+use log::info;
 use std::io::{Read, Write};
 use std::net::{TcpListener, TcpStream};
-use env_logger::Logger;
-use log::info;
+
+static GET: &'static [u8] = b"GET / HTTP/1.1\r\n";
 
 fn main() -> std::io::Result<()> {
     env_logger::init();
     let listener = TcpListener::bind("127.0.0.1:7878")?;
     for stream in listener.incoming() {
-        let stream = stream?;
-        handle_connection(stream)?;
+        handle_connection(stream?)?;
     }
     Ok(())
 }
@@ -18,12 +18,17 @@ fn handle_connection(mut stream: TcpStream) -> std::io::Result<()> {
     stream.read(&mut buffer)?;
     info!("Request: {}", String::from_utf8_lossy(&buffer[..]));
 
+    let response = if buffer.starts_with(GET) {
         let contents = include_str!("hello.html");
-    let response = format!(
+        format!(
             "HTTP/1.1 200 OK\r\nContent-Length: {}\r\n\r\n{}",
             contents.len(),
             contents
-    );
+        )
+    } else {
+        "HTTP/1.1 405 Method not allowed\r\n\r\n".to_string()
+    };
+
     stream.write(response.as_bytes())?;
     stream.flush()?;
     Ok(())