LabReport2

Part 1:
Code for Chat Server:

```
import java.io.IOException;
import java.net.URI;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;

class ChatHandler implements URLHandler {
  String chatHistory = "";

 public String handleRequest(URI url) {

    // expect /chat?user=<name>&message=<string>
    if (url.getPath().equals("/chat")) {
      String[] params = url.getQuery().split("&");
      String[] shouldBeUser = params[0].split("=");
      String[] shouldBeMessage = params[1].split("=");
      if (shouldBeUser[0].equals("user") && shouldBeMessage[0].equals("message")) {
        String user = shouldBeUser[1];
        String message = shouldBeMessage[1];
        this.chatHistory += user + ": " + message + "\n\n";
        return this.chatHistory;
      } else {
        return "Invalid parameters: " + String.join("&", params);
      }
    }
    return "404 Not Found";`
  }
}

class ChatServer {
  public static void main(String[] args) throws IOException {`
    int port = Integer.parseInt(args[0]);`
    Server.start(port, new ChatHandler());`
  }
}
```

Part 2:
![Image](keygen.png)

Part 3:
I learned that a web browser isn’t the only way to access web URLs - the curl command 
can be used for this as well. We can do this by running the `curl` command with the
URL as its argument from the terminal.