SwanLink

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SwanLink

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Borland C Builder. Platform specific. 6 /22. Application Kernel. Managing the client state ... Allow direct two-way communication between two computer processes ... – PowerPoint PPT presentation

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Title: SwanLink

1
SwanLink

Peer to Peer System
for Educational Purposes

2
Research Goal

Internet-oriented education
Data sharing
Consistency maintenance

3
Problem Statement

Message based network communication
Sessions group support
Maintaining consistent state
Managing joining/leaving
Remote data access
Video-conferencing support

4
Three-Tier Architecture

User interface tier
Application kernel
Network tier

5
User Interface Tier

Selecting IDE
Microsoft Visual Studio 6.0
Microsoft Visual Studio 7.0 .Net
Borland C Builder
Platform specific

6
Application Kernel

Managing the client state
Business logic
Creating the events
Handling the events
ANSI C implementation
Platform independent

7
Network Tier

Reliable message passing
Low latency
Easy to change configuration
Managing huge number of contributors

8
Network TierExisting Solutions

Point-To-Point Networking Protocols
Client-Server Middleware
Multicast Networking Protocols
Peer-to-peer Middleware

9
Point-to-Point Networking Protocols

Allow direct two-way communication between two
computer processes
Using point-to-point connections directly does
not scale easily as the number of participating
processes grows

10
Client-Server Middleware

Resources are not well-used in client-server
solutions
Client resources tend toward underutilization
The resources of the servers are in excessive
demand

11
Multicast Networking Protocols

Require special router hardware and/or software
to achieve data sharing
Performance bottleneck
Single point of failure for the session
Serialized messaging limits speed

12
Peer-to-Peer Middleware

Provide an easy-to-use abstraction
Hidden from the programmer is how the actual
communication takes place

13
Benefits of P2P Technology

Eliminate centralized servers and capital
intensive server farms
Eliminate centralized warehouses of information
Eliminate centralized arbitrators (hardware,
software, or human) normally tasked with deciding
which computers talk to which other computers

14
Choosing P2P Implementation

JXTA
Microsoft Net Meeting
SWAN

15
SWAN Small-world Wide Area Networks

Swan solution for ad hoc networks is near-optimal
Retains high reliability
Logarithmic latency

16
Benefits of SWAN Technology

Economical
Simple to use
Easy to implement
Real-time responsive
Reliable
Secure

17
Joining Group
18
Group Diameter
?log2N? ?log2lnN log212? 1 ? d d ? ? log2N
log2lnN? 1
19
Swan Group
20
Message Passing
21
SwanLink Application
22
SwanLink
Peer to Peer System for Educational Purposes
Authors Prof. Veljko Milutinovic,
vm_at_etf.bg.ac.yu Jovan Popovic,
josars_at_galeb.etf.bg.ac.yu Nenad Korolija,
nenadko_at_net.yu Predrag Minic, mipedja_at_galeb.etf.b
g.ac.yu Andrija Bonjakovic, andrija_at_etf.bg.ac.yu

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