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Description

This project is a simple HTTP server implemented in Rust using the standard library (std). It creates a thread pool to handle incoming TCP connections concurrently. Below is an explanation of the code:

Imports and Main Function

The initial part of the code imports necessary modules and defines the main function.

  • std::fs: Filesystem operations.
  • std::io::prelude::*: I/O traits and utilities.
  • std::net::TcpListener: TCP listener for incoming connections.
  • std::net::TcpStream: TCP stream for reading/writing data.
  • std::thread: Thread-related functionalities.
  • std::time::Duration: Time-related utilities.
  • server::ThreadPool: Custom thread pool implementation.

Main Function

  • Binds the server to 127.0.0.1:7878.
  • Creates a thread pool with 4 threads (ThreadPool::new(4)).
  • Accepts incoming TCP connections in a loop and dispatches them to the thread pool for handling (pool.execute(|| { handle_connection(stream); });).

Handle Connection Function

Handles each TCP connection.

  • Reads data from the client into a buffer.
  • Parses the HTTP request to determine the requested resource.
  • Generates an appropriate HTTP response based on the request.

Custom ThreadPool Implementation

Defines a custom thread pool (struct ThreadPool) to manage worker threads.

  • Uses a message passing mechanism (mpsc::channel) to communicate between the main thread and worker threads.
  • Workers (struct Worker) listen for incoming jobs (closures) and execute them concurrently.