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  • Book Overview & Buying iOS and OS X Network Programming Cookbook
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iOS and OS X Network Programming Cookbook

iOS and OS X Network Programming Cookbook

By : Jon Hoffman
4.5 (6)
Buy this Book
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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)
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iOS and OS X Network Programming Cookbook
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iOS and OS X Network Programming Cookbook
Credits
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Credits
About the Author
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About the Author
About the Reviewers
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About the Reviewers
www.PacktPub.com
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www.PacktPub.com
Preface
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Preface
Lock Free Chapter
1
BSD Socket Library
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BSD Socket Library
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Introduction
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Finding the byte order of your device
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Retrieving network address information
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Performing a network address resolution
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Creating an echo server
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Creating an echo client
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Creating a data server
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Creating a data client
2
Apple Low-level Networking
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Apple Low-level Networking
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Introduction
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Retrieving network address information
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Performing a network address resolution
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Creating an echo server
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Creating an echo client
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Creating a server to receive data
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Creating a client to send data
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Checking the network status
3
Using Libnet
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Using Libnet
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Introduction
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Installing libnet
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Adding libnet to your project
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Resolving names to addresses with libnet
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Retrieving local addresses with libnet
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Constructing a Ping packet with libnet
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Constructing a UDP packet with libnet
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Constructing a TCP packet with libnet
4
Using Libpcap
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Using Libpcap
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Introduction
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Adding libpcap to your project
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Retrieving network device information
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Capturing packets
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Decoding Ethernet headers
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Decoding IP headers
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Decoding ARP headers
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Decoding TCP headers
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Decoding UDP headers
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Decoding ICMP headers
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Filtering packets
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Saving a capture file
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Creating a simple port scanner using libnet and libpcap together
5
Apple High-level Networking
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Apple High-level Networking
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Introduction
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Performing HTTP(S) synchronous GET requests
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Performing HTTP(S) synchronous POST requests
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Performing HTTP(S) asynchronous GET requests
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Performing HTTP(S) asynchronous POST requests
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Parsing an RSS feed with NSXMLParser, NSURL, and NSData
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Creating a peer-to-peer bluetooth network
6
Bonjour
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Bonjour
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Introduction
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Publishing a Bonjour service
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Discovering a Bonjour service
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Resolving a Bonjour service
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Creating an echo server that uses Bonjour to advertise the service
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Creating an echo client that uses Bonjour to discover the service
7
AFNetworking 2.0 Library
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AFNetworking 2.0 Library
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Introduction
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Checking the network connection type and changes
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Creating a web client using AFHTTPSessionManager
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Creating a custom response serializer
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Using the UIImageView+AFNetworking category
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Downloading files with a progress bar
8
MKNetworkKit
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MKNetworkKit
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Introduction
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Creating and using the MKNetworkKit engine
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Uploading a file using MKNetworkKit
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Downloading a file using MKNetworkKit
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Using the UIImageView+MKNetworkKitAdditions.h category and caching the images
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Adding a progress bar to upload or download
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Index
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Index

Decoding ARP headers

In the Decoding Ethernet headers recipe, we created the got_packet() callback function that libpcap called for each packet that was captured. In this function, we learned how to pull out the Ethernet header information from the packet and created a switch statement that switched on the protocol type. In that switch statement, we made a reference to the decodeArp() function that is used to decode the ARP headers. In this recipe, we will create that decodeArp() function.

The ARP header is a part of the second layer (Internet layer) of our header stack. Its structure is shown in the following diagram:

Let's take a look at the fields of the ARP header:

  • Hardware Type: This specifies the network protocol type. Some of the defined values are:

    • 1 – Ethernet

    • 6 – IEEE 802 network

    • 7 – ARCNET

    • 15 – Frame Relay

    • 18 – Fibre Channel

    • 20 – Serial Line

  • Protocol Type: This specifies the internetworking protocol type. Some of the defined values are:

    • 0x0800 – IPv4

    • 0x0806 – ARP

    • 0x8035 – RARP

    • 0x86DD – IPv6...

CONTINUE READING
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Tech Concepts
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Programming languages
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iOS and OS X Network Programming Cookbook
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