Python Network Programming

Objective: Understand networking fundamentals and Python's role in network programming.

Topics Covered:

• OSI model and TCP/IP protocol suite
• IP addresses, ports, and sockets explained
• TCP vs. UDP: Connection-oriented vs. connectionless
• Setting up Python environment for network programming
• Understanding network byte order and data encoding
• Introduction to key Python networking libraries

Tools: Python 3, Wireshark for packet analysis

Objective: Master basic socket programming for network communication.

Topics Covered:

• Creating and using Python sockets (socket module)
• Building a TCP client and TCP server
• Building a UDP client and UDP server
• Handling multiple clients with threading
• Socket timeouts and error handling
• Non-blocking sockets and select()

Tools: Python socket library, telnet/netcat for testing

Objective: Build advanced network applications with robust socket handling.

Topics Covered:

• Building a multi-threaded chat server and client
• File transfer over TCP with error handling
• Implementing custom protocols and message framing
• Socket programming with asyncio for high performance
• Broadcasting and multicasting with UDP
• Raw sockets and packet crafting

Tools: asyncio, threading, socket libraries

Objective: Master HTTP protocols and build web clients and servers.

Topics Covered:

• HTTP/1.1 and HTTP/2 fundamentals
• Making HTTP requests with urllib and requests library
• Building a simple HTTP server with http.server
• Working with headers, cookies, and sessions
• Handling JSON data and API responses
• Building web scrapers and crawlers

Tools: requests, urllib, BeautifulSoup, http.server

Objective: Consume and build RESTful APIs using Python.

Topics Covered:

• REST API principles and best practices
• Consuming public APIs (GET, POST, PUT, DELETE)
• Authentication methods (API keys, OAuth, JWT)
• Building a REST API with Flask or FastAPI
• Handling API rate limits and pagination
• Testing APIs with Python (unittest, pytest)

Tools: requests, Flask, FastAPI, Postman

Objective: Send, receive, and process emails programmatically.

Topics Covered:

• SMTP protocol for sending emails
• Using smtplib to send plain text and HTML emails
• Adding attachments to emails
• IMAP and POP3 protocols for receiving emails
• Using imaplib and poplib to read emails
• Parsing email content with email and parser libraries
• Building email automation scripts

Tools: smtplib, imaplib, poplib, email library

Objective: Transfer files programmatically using FTP and SFTP.

Topics Covered:

• FTP protocol fundamentals and ftplib library
• Uploading and downloading files via FTP
• Managing directories and listing files
• Secure file transfer with SFTP (Paramiko)
• Comparing FTP vs. SFTP security
• Building automated file transfer scripts

Tools: ftplib, paramiko (SFTP), pysftp

Objective: Build network diagnostic and DNS tools with Python.

Topics Covered:

• DNS resolution with socket.gethostbyname() and dns.resolver
• Building a DNS lookup tool
• Ping and traceroute implementation in Python
• Port scanning and service detection
• Network device discovery on local network
• Building a network diagnostic toolkit

Tools: dnspython, ping3, scapy, socket

Objective: Implement encrypted network communication using SSL/TLS.

Topics Covered:

• Introduction to SSL/TLS and certificates
• Creating SSL/TLS sockets with ssl module
• Building secure TCP client and server
• Working with HTTPS and certificate validation
• Generating self-signed certificates for testing
• Best practices for secure network programming

Tools: ssl module, OpenSSL, certifi

Objective: Build a complete network application using all learned concepts.

Topics Covered:

• Project planning and architecture design
• Building a file transfer application with GUI
• Implementing chat server with encryption
• Adding API integration and data storage
• Testing and debugging network applications
• Deployment and documentation
• Project presentation and code review

Tools: All tools learned throughout the course