Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying iOS and OS X Network Programming Cookbook
  • Table Of Contents Toc
iOS and OS X Network Programming Cookbook

iOS and OS X Network Programming Cookbook

By : Jon Hoffman
4.5 (6)
Buy this Book
close
close
iOS and OS X Network Programming Cookbook

iOS and OS X Network Programming Cookbook

4.5 (6)
By: Jon Hoffman
Buy this Book

Overview of this book

Table of Contents (15 chapters)
close
close
close
iOS and OS X Network Programming Cookbook
Icon
iOS and OS X Network Programming Cookbook
Credits
Icon
Credits
About the Author
Icon
About the Author
About the Reviewers
Icon
About the Reviewers
www.PacktPub.com
Icon
www.PacktPub.com
Preface
Icon
Preface
Lock Free Chapter
1
BSD Socket Library
Icon
BSD Socket Library
Icon
Introduction
Icon
Finding the byte order of your device
Icon
Retrieving network address information
Icon
Performing a network address resolution
Icon
Creating an echo server
Icon
Creating an echo client
Icon
Creating a data server
Icon
Creating a data client
2
Apple Low-level Networking
Icon
Apple Low-level Networking
Icon
Introduction
Icon
Retrieving network address information
Icon
Performing a network address resolution
Icon
Creating an echo server
Icon
Creating an echo client
Icon
Creating a server to receive data
Icon
Creating a client to send data
Icon
Checking the network status
3
Using Libnet
Icon
Using Libnet
Icon
Introduction
Icon
Installing libnet
Icon
Adding libnet to your project
Icon
Resolving names to addresses with libnet
Icon
Retrieving local addresses with libnet
Icon
Constructing a Ping packet with libnet
Icon
Constructing a UDP packet with libnet
Icon
Constructing a TCP packet with libnet
4
Using Libpcap
chevron up
Icon
Using Libpcap
Icon
Introduction
Icon
Adding libpcap to your project
Icon
Retrieving network device information
Icon
Capturing packets
Icon
Decoding Ethernet headers
Icon
Decoding IP headers
Icon
Decoding ARP headers
Icon
Decoding TCP headers
Icon
Decoding UDP headers
Icon
Decoding ICMP headers
Icon
Filtering packets
Icon
Saving a capture file
Icon
Creating a simple port scanner using libnet and libpcap together
5
Apple High-level Networking
Icon
Apple High-level Networking
Icon
Introduction
Icon
Performing HTTP(S) synchronous GET requests
Icon
Performing HTTP(S) synchronous POST requests
Icon
Performing HTTP(S) asynchronous GET requests
Icon
Performing HTTP(S) asynchronous POST requests
Icon
Parsing an RSS feed with NSXMLParser, NSURL, and NSData
Icon
Creating a peer-to-peer bluetooth network
6
Bonjour
Icon
Bonjour
Icon
Introduction
Icon
Publishing a Bonjour service
Icon
Discovering a Bonjour service
Icon
Resolving a Bonjour service
Icon
Creating an echo server that uses Bonjour to advertise the service
Icon
Creating an echo client that uses Bonjour to discover the service
7
AFNetworking 2.0 Library
Icon
AFNetworking 2.0 Library
Icon
Introduction
Icon
Checking the network connection type and changes
Icon
Creating a web client using AFHTTPSessionManager
Icon
Creating a custom response serializer
Icon
Using the UIImageView+AFNetworking category
Icon
Downloading files with a progress bar
8
MKNetworkKit
Icon
MKNetworkKit
Icon
Introduction
Icon
Creating and using the MKNetworkKit engine
Icon
Uploading a file using MKNetworkKit
Icon
Downloading a file using MKNetworkKit
Icon
Using the UIImageView+MKNetworkKitAdditions.h category and caching the images
Icon
Adding a progress bar to upload or download
1
Index
Icon
Index

Decoding Ethernet headers

If we recall how the headers are layered from this chapter's introduction, the first layer we will need to peel off is the Ethernet (Link layer) header. It looks like this:

The hardware will filter out the preamble, so we will not have access to it, but we need to retrieve the following elements:

  • Destination Address: This is the MAC address of the computer that this packet is being sent to

  • Source Address: This is the MAC address of the computer that this packet came from

  • Type: This is used to indicate the type of protocol that is encapsulated. Some of the common protocols are as follows:

    • 0x0800—IPv4

    • 0x0806—ARP

    • 0x8035—RARP

    • 0x86DD—IPv6

  • Data: This indicates the payload

  • Frame Check Sequence: This indicates the checksum that is added to the frame to detect transmission errors

We will build a PCAP_Headers.h file that contains the structures and constants needed to decode the various packet headers. The entries in the PCAP_Headers.h file for the Ethernet header are as follows:

//Ethernet...
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
iOS and OS X Network Programming Cookbook
End of Section 4
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon