Book Description
This guide embraces the elegance and versatility of Python to assist any programmer or administrator who wants to create bespoke client/server networking applications using third-party libraries. Simply packed with recipes.
In Detail
Python is an excellent language to use to write code and have fun by prototyping applications quickly. The presence of lots of third-party libraries, also known as batteries, makes it even more easier and faster to prototype an application or to implement a new algorithm. If you are interested in creating the building blocks for many practical web and networking applications that rely on networking protocols then this book is a must-have.
This book highlights major aspects of network programming in Python starting from writing simple networking clients, to developing complex screen-scraping and network security monitoring scripts. It creates the building blocks for many practical web and networking applications that rely on various networking protocols. This book presents the power and beauty of Python in solving the numerous real-world tasks in the area of network programming, system and network administration, network monitoring, and web-application development.
This book develops your ability to solve a wide range of network programming tasks in Python. We will start by exploring the Python standard library functions to create client/server network and manipulate your local networking resources available under both IPv4 and IPv6. The practical focus continues with creating web and email clients, scraping web pages, fetching information from various websites, and searching for information on the Web such as Amazon, Flickr, and other sites. It further develops your skills to analyze your network security vulnerabilities using advanced network packet capture and analysis techniques.
What You Will Learn
- Develop TCP/IP networking client/server applications
- Administer local machines' IPv4/IPv6 network interfaces
- Write multi-purpose efficient web clients for HTTP and HTTPS protocols
- Create e-mail clients to work with common e-mail protocols such as SMTP, POP3, IMAP, and so on.
- Scrape websites and search for useful information
- Perform remote system administration tasks over Telnet and SSH connections
- Interact with popular websites via web services such as XML-RPC, SOAP, and REST APIs
- Monitor and analyze major common network security vulnerabilities
Downloading the example code for this book. You can download the example code files for all Packt books you have purchased from your account at http://www.PacktPub.com. If you purchased this book elsewhere, you can visit http://www.PacktPub.com/support and register to have the files e-mailed directly to you.
Table of Contents
- Python Network Programming Cookbook
- Table of Contents
- Python Network Programming Cookbook
- Credits
- About the Author
- About the Reviewers
- www.PacktPub.com
- Preface
- 1. Sockets, IPv4, and Simple Client/Server Programming
- Introduction
- Printing your machine's name and IPv4 address
- Retrieving a remote machine's IP address
- Converting an IPv4 address to different formats
- Finding a service name, given the port and protocol
- Converting integers to and from host to network byte order
- Setting and getting the default socket timeout
- Handling socket errors gracefully
- Modifying socket's send/receive buffer sizes
- Changing a socket to the blocking/non-blocking mode
- Reusing socket addresses
- Printing the current time from the Internet time server
- Writing a SNTP client
- Writing a simple echo client/server application
- 2. Multiplexing Socket I/O for Better Performance
- 3. IPv6, Unix Domain Sockets, and Network Interfaces
- Introduction
- Forwarding a local port to a remote host
- Pinging hosts on the network with ICMP
- Waiting for a remote network service
- Enumerating interfaces on your machine
- Finding the IP address for a specific interface on your machine
- Finding whether an interface is up on your machine
- Detecting inactive machines on your network
- Performing a basic IPC using connected sockets (socketpair)
- Performing IPC using Unix domain sockets
- Finding out if your Python supports IPv6 sockets
- Extracting an IPv6 prefix from an IPv6 address
- Writing an IPv6 echo client/server
- 4. Programming with HTTP for the Internet
- Introduction
- Downloading data from an HTTP server
- Serving HTTP requests from your machine
- Extracting cookie information after visiting a website
- Submitting web forms
- Sending web requests through a proxy server
- Checking whether a web page exists with the HEAD request
- Spoofing Mozilla Firefox in your client code
- Saving bandwidth in web requests with the HTTP compression
- Writing an HTTP fail-over client with resume and partial downloading
- Writing a simple HTTPS server code with Python and OpenSSL
- 5. E-mail Protocols, FTP, and CGI Programming
- Introduction
- Listing the files in a remote FTP server
- Uploading a local file to a remote FTP server
- E-mailing your current working directory as a compressed ZIP file
- Downloading your Google e-mail with POP3
- Checking your remote e-mail with IMAP
- Sending an e-mail with an attachment via Gmail SMTP server
- Writing a guestbook for your (Python-based) web server with CGI
- 6. Screen-scraping and Other Practical Applications
- Introduction
- Searching for business addresses using the Google Maps API
- Searching for geographic coordinates using the Google Maps URL
- Searching for an article in Wikipedia
- Searching for Google stock quote
- Searching for a source code repository at GitHub
- Reading news feed from BBC
- Crawling links present in a web page
- 7. Programming Across Machine Boundaries
- Introduction
- Executing a remote shell command using telnet
- Copying a file to a remote machine by SFTP
- Printing a remote machine's CPU information
- Installing a Python package remotely
- Running a MySQL command remotely
- Transferring files to a remote machine over SSH
- Configuring Apache remotely to host a website
- 8. Working with Web Services – XML-RPC, SOAP, and REST
- Introduction
- Querying a local XML-RPC server
- Writing a multithreaded multicall XML-RPC server
- Running an XML-RPC server with a basic HTTP authentication
- Collecting some photo information from Flickr using REST
- Searching for SOAP methods from an Amazon S3 web service
- Searching Google for custom information
- Searching Amazon for books through product search API
- 9. Network Monitoring and Security
- Introduction
- Sniffing packets on your network
- Saving packets in the pcap format using the pcap dumper
- Adding an extra header in HTTP packets
- Scanning the ports of a remote host
- Customizing the IP address of a packet
- Replaying traffic by reading from a saved pcap file
- Scanning the broadcast of packets
- Index