simple-http: Add scaffolding for thread pool implementation

[learn-rust.git] / simple-http / src / bin / main.rs

diff --git a/simple-http/src/bin/main.rs b/simple-http/src/bin/main.rs
new file mode 100644 (file)
index 0000000..ff3af27
--- /dev/null
+++ b/simple-http/src/bin/main.rs
@@ -0,0 +1,72 @@
+use std::io::prelude::*;
+
+use std::net::TcpListener;
+use std::net::TcpStream;
+use std::time::Duration;
+use std::{fs, str, thread};
+
+use simple_http::ThreadPool;
+
+fn handle_connection(mut stream: TcpStream) {
+     let mut buffer = [0; 1024];
+
+    stream.read(&mut buffer).unwrap();
+
+    let buffer = match str::from_utf8(&buffer[..]) {
+        Ok(s) => s,
+        Err(e) => {
+            eprintln!("Invalid non-UTF8 request: {}\n{}", e, String::from_utf8_lossy(&buffer[..]));
+            return;
+        }
+    };
+    println!("Request: {}", buffer);
+
+    let path;
+
+    // simple web server, just interested in first line
+    if let Some(line) = buffer.lines().next() {
+        let request: Vec<_> = line.split_whitespace().collect();
+        if request.len() != 3 || request[0] != "GET" || request[2] != "HTTP/1.1" {
+            stream.write(b"HTTP/1.1 501 NOT IMPLEMENTED\r\n").unwrap();
+            stream.flush().unwrap();
+            return;
+        }
+
+        path = request[1];
+    } else {
+        eprintln!("Ignoring empty request: {}", buffer);
+        return;
+    }
+
+    let (code, file) = if path == "/" || path == "/index.html" {
+        ("200 OK", "index.html")
+    } else if path == "/slow" {
+        thread::sleep(Duration::from_secs(5));
+        ("200 OK", "index.html")
+    } else {
+        ("404 NOT FOUND", "404.html")
+    };
+
+    let text = fs::read_to_string(file).unwrap();
+
+    let response = format!(
+        "HTTP/1.1 {}\r\n\
+         Content-Type: text/html\r\n\
+         Content-Length: {}\r\n\r\n{}",
+        code,
+        text.len(),
+        text);
+
+    stream.write(response.as_bytes()).unwrap();
+    stream.flush().unwrap();
+}
+
+fn main() {
+    let listener = TcpListener::bind("127.0.0.1:7878").unwrap();
+    let pool = ThreadPool::new(4);
+
+    for stream in listener.incoming() {
+        let stream = stream.unwrap();
+        pool.execute(|| handle_connection(stream));
+    }
+}