Course Introduction
CS423 Client/Server
Programming and Apps
References:
Comer/Stevens, Ch1
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CS423 Client/Server
Programming and Applications
• Who am I?
• Bob Cotter
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Flarsheim Hall room 450J
(816) 235-????
cotterr@.umkc.edu
http:// --- TBA
• Office Hours:
– 10:00 am to 11:00 am Tuesday and Thursday
– or by appointment
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CS423 Client/Server
Programming and Applications
• Course Objectives
– Understand and apply the principles of client / server programming
• Grading
– Projects (4 or 5): 40% of grade
– Three exams, Final ( closed book): 20% each (best 3 of 4)
• Other (see “General Rules” on my web page)
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Class attendance
Lecture Notes
Due dates - end of day on due dates
Incompletes
Academic Integrity
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CS423 Client/Server
Programming and Applications
• Course Prerequisites
– C Programming (C++ even better)
– Basic Computer Systems Background
– Java ??
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CS423 Client/Server
Programming and Applications
• Course Prerequisites
– C Programming (C++ even better)
– Basic Computer Systems Background
– Java ??
• Text
– Internetworking with TCP/IP Vol. III
Client-Server Programming and Applications Windows Sockets Version, 1/e
Comer & Stevens
– Miscellaneous other readings, RFCs, internet
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CS423 Client/Server
Programming and Applications
• Things you need to get:
– An exchange account
– Access to the Web - my home page is:
• http:// TBA
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CS423 Client/Server
Programming and Applications
• Underpinnings
• Remote Procedure Calls
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CS423 Client/Server
Programming and Applications
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Underpinnings
Remote Procedure Calls
Client/Server in Windows
Client/Server in Linux
Client/Server in Java
Other Stuff
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Client /Server Underpinnings
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Evolution of C/S Architecture
Objectives of C/S Architecture
C/S Transport (TCP/IP)
Socket Concepts
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Client/Server in Windows
• SCE Windows Support Environment
• Windows Operating Environment
• Windows Programming Environment
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Client/Server in Windows
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SCE Windows Support Environment
Windows Operating Environment
Windows Programming Environment
Sockets
Project (s)
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Client/Server in Linux
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SCE Linux Support Environment
Linux Operating Environment
Linux Programming Environment
Sockets
Project (s)
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Client/Server in Java
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SCE Java Support Environment
Java Operating Environment
Java Programming Environment
Java Sockets
Project (s)
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Remote Procedure Calls
• Foundations for RPC
• External Data Representation
• RPC Concepts
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Remote Procedure Calls
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Foundations for RPC
External Data Representation
RPC Concepts
RPC Examples
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Other Stuff (As time permits)
• Threads
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Other Stuff (As time permits)
• Threads
• Other C/S environments
Raw Sockets
IPv6
UNIX Domain Sockets
CORBA
COM / DCOM
NFS
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Motivation for Distributed
Processing
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Computing costs
Computing Power
Computer networking Capabilities
Application Availability Requirements
Multi-vendor Environment Proliferating
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Client Server Evolution
• Host Based Processing
– Dumb Terminals
• Master - Slave Processing
– “Intelligent” Terminals (field validation, etc)
– Cluster Controllers
• Client - Server Processing
• Peer-to-Peer Processing
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Host Based Processing
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Master - Slave Processing
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Client Server Processing
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Peer to Peer Processing
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Client / Server Advantages
• Leverage Desktop Computing Power
• Move Processing Closer to Data Source
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Client / Server Advantages
• Leverage Desktop Computing Power
• Move Processing Closer to Data Source
• Facilitates Leveraging GUI Experience
– Common Interface can be used for Multiple
Services
• Encourages Open Systems
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Distributed Computing
Environment
• Developed under Open Software
Foundation (OSF)
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Distributed Computing
Environment
• Developed under Open Software
Foundation (OSF)
• Major Components:
– Distributed File System
– Directory Service
– Remote Procedure Calls
– Threads Services
– Time Services
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Client Server Database Apps
• Layered Model
– Application
– Presentation (GUI, etc.)
– Business Logic (if, then, else...)
– Database Logic (SQL)
– Database Management System (Oracle, etc.)
• Database
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Distributed Processing Models
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Communication Systems
Functions
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Naming and Addressing
Segmentation
Blocking
Flow Control
Prioritizing
Error Control
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Concurrency in C/S
• Multiple actions (processes) executing in
parallel
• Primarily a Server side issue
– Linkage to multiple clients
• Also used on Client side
– separate blocking events from non-blocking
events
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Threads and Processes
• Process:
– A program in execution
– Includes context
– Includes at least 1 thread
• Thread
– Lightweight process
– A flow of execution
– Operates within the context of a single
process
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Summary
• Course Background
– Course structure
– SCE support facilities
• Client / Server Introduction
– Environment Evolution
– Distributed Computing
– Multi-threading / multi-processing
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