• • Have students write software/scripts to do a register with a SIP server and a

• SIP server software
  • SIP-router.org
  • openSIPS.org
  • List of SIP software

1. To be able to compare and contrast the delivery and playback requirements between the following multimedia delivery approaches:
   • Complete the download and then play

1. Controlling the stream (i.e. starting, stopping, positioning)
2. Playback requirements of the stream, i.e how timestamps and sequence numbers are used to ensure proper playback

1. (Content distribution and scaling?? Or is this something that is more appropriate for a separate topic or even the next course.)

• • Invention exercise - design a streaming protocol to handle playback of a movie, then a live event, then for the ambitious add the control of the stream
  • Invention exercise - design a header for a real time transport protocol that runs on top of UDP (i.e. invent RTP) Maybe this is really the same as the previous activity or and extension of it.

• • Invention activity - design a protocol to control the playback of a realtime stream. (i.e. invent RTSP) We would probably want to list several things that we would expect the students to address in this invention activity, or maybe that is part of the activity.
  • Invention activity with respect to device location. (i.e. something like SIP)

• • Assignment from Kurose and Ross. (See: Instructor Resources)

• Multimedia streaming assignment from Kurose and Ross The multimedia chapter of Kurose and Ross (Chapter 7 in 4th edition) has a programming assignment that uses RTP and RTSP. The text directs one to a website for the full assignment and supporting materials but I wasn't able to find them. However, the link at the start of this bullet has them. (In case the above website disappears, I have "archived" its contents in the file RTP.tar.gz.

• Sample slides Starting about about slide 7 there is a comparison of various multimedia signalling protocols.

Student Resources

Multimedia Network Networking Issues

1. To be able to compare and contrast the delivery and playback requirements between
   • Complete download and play
   • Streaming of stored media (e.g. a movie or song)
   • Live media (e.g. live sporting event or radio broadcast)
   • Real-time interactive media stream (e.g. Video or telephone call)
2. Issues associated with streaming of data
   • lost or late data
   • playing back at the proper rate

1. Controlling the stream (i.e. starting stopping positioning)
2. Requirements of the stream, i.e how timestamps and sequence numbers are used to ensure proper playback
3. Handling lost or out of order data

• • Invention exercise - design a streaming protocol to handle playback

• Java Media Framework

• • Henning Schulzrinne's SIP site

• • Henning Schulzrinne's RTSP site

• • RFC 3550
  • Henning Schulzrinne's RTP site

Student Resourceshttp://www.cs.columbia.edu/~hgs/rtp/

• Knowledge and understanding surrounding bandwidth and latency.

• RTSP - Real time streaming protocol - Protocol between client and server that controls the streaming of the multimedia data, but it does not specify how the multimedia is actually streamed, that is handled by a different protocol. Typically RTP.
  • RTSP article on Wikipedia
  • RFC 2326
• RTP - Realtime Transport Protocol - A protocol that specifies the packet format and semantics of sending/receiving streaming multimedia data on an IP network
  • Realtime Transport Protocol on Wikipedia
  • RFC 3551

• RFC 4566 SDP - Session description protocol.
• SIP - Session Initiation Protocol
  • RFC 3261
  • Wikipedia Article
• H.323 - ITU 323 incorporates both call signal and multimedia transport on packet switched networks
  • H.323 on Wikipedia
  • T-REC-H.323-200912-IPDF-E.pdf copied from the ITU. Additional information can be found at: http://www.itu.int/rec/T-REC-H.323/en/

• Multimedia streaming assignment from Kurose and Ross The multimedia chapter of Kurose and Ross (Chapter 7 in 4th edition) has a programming assignment that uses RTP and RTSP. The text directs one to a website for the full assignment and supporting materials but I wasn't able to find them. However, the link at the start of this bullet has them. (In cast the above website disappears, I have "archived" its contents in the file RTP.tar.gz.

• TCP streams are decomposed into packets for sending
• UDP is unreliable
• When packets are sent from one host to another the amount of time for the packet to arrive will vary, sometimes significantly. Packets may also be lost, which in the case of TCP means that data will be retransmitted and a delay will result.
• The concept of buffering

• Stream Assignment from Kurose and Ross The multimedia chapter of Kurose and Ross (Chapter 7 in 4th edition) has a programming assignment that uses RTP and RTSP. The text directs one to a website for the full assignment and supporting materials but I wasn't able to find them. However, the link at the start of this bullet has them. (In cast the above website disappears, I have "archived" its contents in the file RTP.tar.gz.

• Stream Assignment from Kurose and Ross The multimedia chapter of Kurose and Ross (Chapter 7 in 4th edition) has a programming assignment that uses RTP and RTSP. The text directs one to a website for the full assignment and supporting materials but I wasn't able to find them. However, the link at the start of this bullet has them.

-- DonaldActon - 23 Jun 2011

Socket Programming

Knowledge assumed prior to starting this module

Learning Outcomes

Lesson Plan

Lecture 1

• Pre class Activities
• In Class Activities
• After Class Activities

Lecture 2

• Pre-class Activities
• In Class Activities
• Post Class Activities

Instructor Resources

Student Resources