Presentation is loading. Please wait.

Presentation is loading. Please wait.

CS2910 Week 4, Class 1 Today Encoding in Python – Review Quiz – Encoding in Python Introduction to HTTP SE-2811 Slide design: Dr. Mark L. Hornick Content:

Published byRodney Curtis Modified over 8 years ago

Similar presentations

Presentation on theme: "CS2910 Week 4, Class 1 Today Encoding in Python – Review Quiz – Encoding in Python Introduction to HTTP SE-2811 Slide design: Dr. Mark L. Hornick Content:"— Presentation transcript:

1 CS2910 Week 4, Class 1 Today Encoding in Python – Review Quiz – Encoding in Python Introduction to HTTP SE-2811 Slide design: Dr. Mark L. Hornick Content: Dr. Hornick Errors: Dr. Yoder 1

2 Muddiest Points Understanding the commands to switch between the different variable types.conversions Using pack command in the cases of little endian format.pack and unpack the inputs and outputs of pack and unpackpack and unpack how python interprets/ stores variablesinterpreting storage I'm still a bit shaky on the Python commands and conversions, and why/when to use them.conversions python's classes 'self'OO in Python Tuples?tuples Using pack and unpackpack and unpack Understanding how python determines how to interpret a variable (as a string, as an int, etc). interpreting storage When to use a character, number, or hex represent a value of interest interpreting storage SE-2811 Dr.Yoder 2

3 Encoding in Python How to encode a binary Mega? 1,048,576 = 1024 2 = 2 20 In binary: 10000 00000000 00000000 As 32-bits, in hexadecimal: 00 10 00 00 As big-endian string in Python: '\x00\x10\x00\x00' SE-2811 Dr.Yoder 3

4 HTTP HyperText Transfer Protocol Communication between browser and server Used for transmitting HTML (HyperText Markup Language), images, CSS (Cascaded Style Sheets), etc. SE-2811 Dr.Yoder 4

5 RFC's RFC "Request for Comments" Internet Standards Defined in RFC 1945 (HTTP1.0, "Informational",1996) RFC 2616 (HTTP1.1, "Draft Standard",1999) RFCs 7230,7231,7232,7233,7234, and 7235 (HTTP1.1, "Proposed Standard",2014) RFC 7540 (HTTP2, "Proposed Standard",2015) 5

6 At the transport layer Uses TCP for reliable, two-way transfer Always in pairs: Client sends request Server sends response Persistent: Multiple requests/responses over same TCP channel SE-2811 Dr.Yoder 6

7 The bits and bytes of HTTP HTTP is encoded in ASCII Except payload, e.g. when sending images, zipped data, etc. SE-2811 Dr.Yoder 7

8 SE-2811 Dr. Josiah Yoder 8

9 Acknowledgement This course is based on the text Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 SE-2811 Dr. Josiah Yoder 9

Download ppt "CS2910 Week 4, Class 1 Today Encoding in Python – Review Quiz – Encoding in Python Introduction to HTTP SE-2811 Slide design: Dr. Mark L. Hornick Content:"

Similar presentations

Introduction 1-1 Chapter 3 Transport Layer Intro and Multiplexing Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley.

Introduction 1-1 Chapter 3 Transport Layer Intro and Multiplexing Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley.
CPSC 441: FTP & SMTP1 Application Layer: FTP & Instructor: Carey Williamson Office: ICT 740 Class.

CPSC 441: FTP & SMTP1 Application Layer: FTP & Instructor: Carey Williamson Office: ICT Class.
1 CPE 400 / 600 Computer Communication Networks Dr. Mehmet Gunes slides are modified from S.K. Kasera and J. Kurose & K. Ross.

1 CPE 400 / 600 Computer Communication Networks Dr. Mehmet Gunes slides are modified from S.K. Kasera and J. Kurose & K. Ross.
© 2004, Robert K. Moniot Chapter 1 Introduction to Computers and the Internet.

© 2004, Robert K. Moniot Chapter 1 Introduction to Computers and the Internet.
CS2852 Week 8, Class 2 Today Tree terminology Non-Binary and Non-Search Trees Tree Traversals (Remaining slides not yet shown) Tomorrow: Quiz Implementing.

CS2852 Week 8, Class 2 Today Tree terminology Non-Binary and Non-Search Trees Tree Traversals (Remaining slides not yet shown) Tomorrow: Quiz Implementing.
HyperText Transfer Protocol (HTTP).  HTTP is the protocol that supports communication between web browsers and web servers.  A “Web Server” is a HTTP.

HyperText Transfer Protocol (HTTP).  HTTP is the protocol that supports communication between web browsers and web servers.  A “Web Server” is a HTTP.
Internet Concept and Terminology. The Internet The Internet is the largest computer system in the world. The Internet is often called the Net, the Information.

Internet Concept and Terminology. The Internet The Internet is the largest computer system in the world. The Internet is often called the Net, the Information.
HTML ~ Web Design.

HTML ~ Web Design.
Application Layer 2-1 Chapter 2 Application Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012.

Application Layer 2-1 Chapter 2 Application Layer Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012.
SE1011 Week 2, Class 3 Today Compiling and running Another example using Scanner Compile-time and Run-time errors Review for exam SE-1011 Slide design:

SE1011 Week 2, Class 3 Today Compiling and running Another example using Scanner Compile-time and Run-time errors Review for exam SE-1011 Slide design:
SE-1021 Software Engineering II Week 8, Class 1 Return Exam Producing UML diagrams automatically in EA Poll Everywhere Files Tomorrow Week 6 HW due (if.

SE-1021 Software Engineering II Week 8, Class 1 Return Exam Producing UML diagrams automatically in EA Poll Everywhere Files Tomorrow Week 6 HW due (if.
The Web and Web Services Jim Graham NR 621 Spring 2009.

The Web and Web Services Jim Graham NR 621 Spring 2009.
CS2910 Week 1, Class 2 Today Announce Prof. Michael Vieau’s S-341 6p Thurs Wk 2 Assignment for tomorrow Data Encoding, Part 1 Parsing Data Muddiest Point.

CS2910 Week 1, Class 2 Today Announce Prof. Michael Vieau’s S-341 6p Thurs Wk 2 Assignment for tomorrow Data Encoding, Part 1 Parsing Data Muddiest Point.
CS2910 Week 1, Class 1 Today Introductions Class/Lab Layout Safety Review - Note about Lab Safety Review Announce Prof. Michael Vieau’s S-341 6p Thurs.

CS2910 Week 1, Class 1 Today Introductions Class/Lab Layout Safety Review - Note about Lab Safety Review Announce Prof. Michael Vieau’s S-341 6p Thurs.
CS2910 Week 2, Class 1 Today Data Encoding, Part 1 Parsing Data Python Muddiest Point Lab 2 – Bring text In Class, Thursday: Quiz Week 6, Monday: Midterm.

CS2910 Week 2, Class 1 Today Data Encoding, Part 1 Parsing Data Python Muddiest Point Lab 2 – Bring text In Class, Thursday: Quiz Week 6, Monday: Midterm.
1 WWW. 2 World Wide Web Major application protocol used on the Internet Simple interface Two concepts –Point –Click.

1 WWW. 2 World Wide Web Major application protocol used on the Internet Simple interface Two concepts –Point –Click.
CS2910 Week 5, Class 2 Today DNS Muddy Points More HTTP Headers Review for Midterm Exam This coming Monday: Midterm Exam SE-2811 Slide design: Dr. Mark.

CS2910 Week 5, Class 2 Today DNS Muddy Points More HTTP Headers Review for Midterm Exam This coming Monday: Midterm Exam SE-2811 Slide design: Dr. Mark.
CS2910 Week 9, Class 1 Today –Quiz on SMTP –TCP: Flow control vs. Congestion Control –TCP startup, error recovery, and shut-down Before 8am Thursday: –Watch.

CS2910 Week 9, Class 1 Today –Quiz on SMTP –TCP: Flow control vs. Congestion Control –TCP startup, error recovery, and shut-down Before 8am Thursday: –Watch.
CS2910 Week 2, Class 1 Today Return Lab 1 Muddiest Points Quiz Parsing Data in Python SE-2811 Slide design: Dr. Mark L. Hornick Content: Dr. Hornick Errors:

CS2910 Week 2, Class 1 Today Return Lab 1 Muddiest Points Quiz Parsing Data in Python SE-2811 Slide design: Dr. Mark L. Hornick Content: Dr. Hornick Errors:
CS2852 Week 6, Class 1 Today The run-time stack Writing and proving recursive methods SE-2811 Slide design: Dr. Mark L. Hornick Content: Dr. Hornick Errors:

CS2852 Week 6, Class 1 Today The run-time stack Writing and proving recursive methods SE-2811 Slide design: Dr. Mark L. Hornick Content: Dr. Hornick Errors:

Similar presentations

Ads by Google