improv: #5 handle the request and return a response (useful for tests)

src/handlers/request.rs

@@ -122,7 +122,7 @@ impl HTTPStartLine {
         HTTP_VERSION_REGEX.is_match(version)
     }
 
-    fn is_valid(&self) -> bool {
+    pub fn is_valid(&self) -> bool {
         return self.method != "" && self.target != "";
     }
 }
@@ -234,7 +234,7 @@ impl HTTPRequest {
         }
     }
 
-    fn is_valid(&self) -> bool {
+    pub fn is_valid(&self) -> bool {
         return self.start_line.is_valid();
     }
 }

src/main.rs

@@ -25,14 +25,23 @@ async fn handle_connection(mut stream: TcpStream) {
     let mut buffer: [u8; 1024] = [0; 1024];
     let n = stream.read(&mut buffer).await.unwrap();
 
-    println!("buffer : {:?}", std::str::from_utf8(&buffer[0..n]));
+    let request_string = std::str::from_utf8(&buffer[0..n]).unwrap();
+    let request = handle_request(request_string);
 
-    let contents = "{\"balance\": 0.00}";
+    if request.is_valid() {
+        let contents = "{\"status\": \"ok\"}";
         let response = format!(
             "HTTP/1.1 200 OK\r\nContent-Type: application/json\r\nContent-Length: {}\r\n\r\n{}",
             contents.len(),
             contents
         );
+
+        stream.write(response.as_bytes()).await.unwrap();
+        stream.flush().await.unwrap();
+        return;
+    }
+
+    let response = "HTTP/1.1 400 OK\r\n\r\n".to_string();
     stream.write(response.as_bytes()).await.unwrap();
     stream.flush().await.unwrap();
 }