To ensure the protection of both the server and its users, we need to implement some security measures:

• Input Validation and Sanitization
• Error Handling
• Security Headers
• Secure File Handling

We need to enhance our web server to efficiently handle parallel requests from multiple clients.
This feature is important, to improve the webservers performance and responsiveness.

We will need to implement multi-threading to achieve this parallel request handling capability.

Currently the Webserver does not respond with a "Content-Length" Header due to a wrong calculation of the mentioned length.

We need to add the Header to the Response.

Currently the Webserver does not respond with a "Content-Encoding" Header.

We need to add the Header to the Response.

HTTP pipelining is a valuable feature, that allows multiple HTTP requests to be sent on a single connection without waiting for each response.
We need to add support for HTTP pipelining to improve the servers performance by reducing the overhead of opening and closing multiple connections. This requires parsing and managing pipelined requests.

Logging would be useful, for monitoring and debugging our web server.
We need to implement a logging system that records important server events, such as client connections, requests, responses, errors and warnings.