NETE4631 Communicating with the Cloud and Using Media and Streaming

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NETE4631Communicating with the Cloud and Using
Media and Streaming

• Lecture Notes 14

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Lecture Outline

• Exploring instant messaging
• Using social networks
• Using media and streaming
• Audio streaming
• Video streaming

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Exploring Instant Messaging (IM)

• Near real-time communication
• Instant messaging client
• Desktop clients
• Enterprise messaging services
• Browser-based IM clients (exp, WebmailIM)
• Mobile device clients (client specific or mobile
  browser-based)
• What cloud offers?
• All your chat history conversations are deeply
  searchable, always available in one place, and
  backed up in the cloud.

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Common features

• Directed messages
• Rich content management
• Message logging and archiving
• File transfers
• E-mail integration
• Voice and video feeds
• Connections to social media

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Instant Messaging Interoperability
BigBlueBall.com Website
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Thomson Reuters Messaging
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Twitter Short Message Services
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Using Social Networks

• Goals
• Share your personal information to others
• Create and manage a community of your own
• Common features
• Personal profile
• Friends, buddies, and connections
• Groups
• Discussions
• Blogs
• Widgets

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Facebook
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Aggregator Site
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Using Media and Streaming

• Streaming files
• Delivering large content in pieces and playback
  can begin more quickly
• Used for broadcasting current events, showing TV
  and movies on your computer or cell phone, and so
  on
• Streaming types
• Live streaming (progressive streaming)
• On-demand streaming

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Protocol in use

• How it works
• Take raw files and compress (and/or
  encrypt/decrypt) them in some way
• UDP (User Datagram Protocol)
• TCP (Transmission Control Protocol)
• Others
• Real-time Transport Control Protocol (RTCP)
• Real-time Streaming Protocol (RTSP)
• Real-time Transfer Protocol (RTP)

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What cloud offers?

• Advantages
• Large scale storage for maintaining files
  libraries
• Scalable compute engine and network storage that
  can serve for as the streaming servers for large
  audiences
• Scalable compute engine for encoding/ decoding/
  transcoding content
• Scalable network where content can be deployed
  worldwide, exp CDN (Content Delivery Network)
• Disadvantages
• Media files are large, latency in WAN connection

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Audio Streaming

• Lower demand on network bandwidth
• Exp, Real Player, Window Media Player and Apply
  Quicktime
• Tread moving to standard format
• -gtMP3!!!!

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Working with VoIP Applications

• Skype
• Instant messaging, voice telephony, file
  transfers, group chats, message logging/ video
  conferencing
• As long as the connection is between Skype
  clients, the communication is free.

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Working with VoIP Applications (2)

• Google talk
• Telephony application Instant messaging
• Google voice

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Video Streaming

• Broadband networks/ high capacity commodity disk
  drives/ low cost computing power -gt now Cloud
  Computing
• Some of them are content servers, caching and
  storing content, or some services that modify
  content into an appropriate format
• Example, Flickr / YouTube

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YouTube
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Television on the internet
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References

• Chapter 18, 19 of Course Book Cloud Computing
  Bible, 2011, Wiley Publishing Inc.