clientServerProgramming.pptx
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This document discusses the differences between client-side programming and server-side programming. It provides examples of using HTML, JavaScript, and PHP: 1) HTML pages are static files stored on the server. JavaScript can be added to pages to make them dynamic by running scripts in the browser. 2) PHP code embedded in HTML files runs on the server, allowing scripts to output dynamic content. Only the results are sent to the client. 3) Whether content is considered dynamic depends on if it is calculated client-side or server-side, as clients and servers may be in different time zones. The date should be generated server-side for consistency.
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CSE422 Section 002 – Computer Networking
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MCIS 6163 Assignment 1MCIS 6163 Assignment 1.pdfAssignmen.docx
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CSE422 Section 002 – Computer Networking
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MCIS 6163 Assignment 1MCIS 6163 Assignment 1.pdfAssignmen
MCIS 6163 Assignment 1/MCIS 6163 Assignment 1.pdf
Assignment 1 – MCIS 6163
Building a Simple Web Client and a Multithreaded Web Server
Objectives
To understand client-server communication via sockets.
To gain exposure to the basic operations of a Web server and client.
To explore basic structures of HTTP messages.
Due: April 14, 2020 11:59pm
Project Description
In this project, you will be developing a multithreaded Web server and a simple web client. The Web
server and Web client communicate using a text-based protocol called HTTP (Hypertext Transfer
Protocol).
Requirements for the Web server
The server is able to handle multiple requests concurrently. This means the implementation is
multithreaded. In the main thread, the server listens to a specified port, e.g., 8080. Upon receiving an
HTTP request, the server sets up a TCP connection to the requesting client and serves the request in a
separate thread. After sending the response back to the client, it closes the connection.
The server is assumed to work with HTTP GET messages. If the requested file exists, the server
responds with “HTTP/1.1 200 OK” together with the requested page to the client, otherwise it sends a
corresponding error message, e.g., “HTTP/1.1 404 Not Found” or “HTTP/1.1 400 Bad Request”.
If running the server program using command line, the syntax should be:
server_code_name [<port_number>]
where the optional <port_number> is the port on which the server is listening to connections from
clients. If the port number is not entered, the default port 8080 is used.
You can test your Web server implementation on your local machine using a Web browser, e.g.,
Internet Explorer, Firefox, or Chrome. You need to specify the used port number within the URL, for
example,
http://localhost:8080/index.htm
If omitting the port number portion, i.e., 8080, the browser will use the default port 80.
The server should response with a default page when users do not enter a specific page in the URL,
for example,
http://localhost:8080/
It should also work when the request includes a path to the requested file, for example,
http://localhost:8080/path/to/file/example.htm
You should display/log the request and header lines of request messages on the server for the purpose
of debugging.
Requirements for the simple Web client
The client is able to connect to the server via a socket and to request a page on the server.
Upon receipt of the response message from the server, the client extracts and displays/logs the
message status, and then retrieves the page content from the message body.
If running the client program using command line, the syntax should be:
client_code_name <server_IPaddress/name> [<port_number>] [<requested_file_name>]
where the <server_IPaddress/name> is the IP address or name of the Web server, e.g., 127.0.0.1 or
localhost for the server running on the local machine. The optional < ...
MCIS 6163 Assignment 1MCIS 6163 Assignment 1.pdfAssignmen.docx
MCIS 6163 Assignment 1/MCIS 6163 Assignment 1.pdf
Assignment 1 – MCIS 6163
Building a Simple Web Client and a Multithreaded Web Server
Objectives
To understand client-server communication via sockets.
To gain exposure to the basic operations of a Web server and client.
To explore basic structures of HTTP messages.
Due: April 14, 2020 11:59pm
Project Description
In this project, you will be developing a multithreaded Web server and a simple web client. The Web
server and Web client communicate using a text-based protocol called HTTP (Hypertext Transfer
Protocol).
Requirements for the Web server
The server is able to handle multiple requests concurrently. This means the implementation is
multithreaded. In the main thread, the server listens to a specified port, e.g., 8080. Upon receiving an
HTTP request, the server sets up a TCP connection to the requesting client and serves the request in a
separate thread. After sending the response back to the client, it closes the connection.
The server is assumed to work with HTTP GET messages. If the requested file exists, the server
responds with “HTTP/1.1 200 OK” together with the requested page to the client, otherwise it sends a
corresponding error message, e.g., “HTTP/1.1 404 Not Found” or “HTTP/1.1 400 Bad Request”.
If running the server program using command line, the syntax should be:
server_code_name [<port_number>]
where the optional <port_number> is the port on which the server is listening to connections from
clients. If the port number is not entered, the default port 8080 is used.
You can test your Web server implementation on your local machine using a Web browser, e.g.,
Internet Explorer, Firefox, or Chrome. You need to specify the used port number within the URL, for
example,
http://localhost:8080/index.htm
If omitting the port number portion, i.e., 8080, the browser will use the default port 80.
The server should response with a default page when users do not enter a specific page in the URL,
for example,
http://localhost:8080/
It should also work when the request includes a path to the requested file, for example,
http://localhost:8080/path/to/file/example.htm
You should display/log the request and header lines of request messages on the server for the purpose
of debugging.
Requirements for the simple Web client
The client is able to connect to the server via a socket and to request a page on the server.
Upon receipt of the response message from the server, the client extracts and displays/logs the
message status, and then retrieves the page content from the message body.
If running the client program using command line, the syntax should be:
client_code_name <server_IPaddress/name> [<port_number>] [<requested_file_name>]
where the <server_IPaddress/name> is the IP address or name of the Web server, e.g., 127.0.0.1 or
localhost for the server running on the local machine. The optional <.
Implementing AJAX in PHP. Asynchronous JavaScript and XML
AJAX in PHP, Implementing AJAX in PHP. Asynchronous JavaScript and XML, AJAX Working Procedure , XMLHttpRequest object
Make the Web 3D
These slides talk about the Autodesk View and Data API's capabilities and its usage: http://developer.autodesk.com
Server Side Programming
Server-side programming involves writing code that runs on a web server using languages like Java, PHP, and C#. It processes user input, displays pages, structures applications, and interacts with storage. Client-side programming writes code that runs in the user's browser using JavaScript. In a typical interaction, a user's browser requests a page from a server, which processes the request and returns the page which is then rendered in the browser. Common server-side programming languages and frameworks include PHP, Python, and ASP.Net. Web pages can be static with fixed HTML content or dynamic where the content changes based on server-side processing.
09 Oo Php Register
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clientServerProgramming.pptx
- 1. HTML Server Side programming (php) Client Side programming (JavaScript) HTML with client and server Programming 1
- 2. index.html file on the server 2 <html> <header> // head related stuff </header> <body> <h1> Welcome to my web page </h1> <p> Glad you could be here. </p> </body> </html> Welcome to my web page Glad you could be here.
- 3. History of HTML, JavaScript, php 3 1991 HTML (Hyper Text Markup Language) Stored in files on the server and requested by a client. 1995 JavaScript Script code embedded into the .html files, sent to client Scripts run on the client machine (PC, smart phone, tablet) 1995 php (Personal Home Page) Script code embedded into .html (now called .php) files Scripts run on the server, only results are sent to the client.
- 4. Server and Client Programming 4
- 6. index.html - dynamic data? 6 <html> <body> <h1> Welcome to my web page </h1> <p> Today is Wednesday</p> </body> </html> Note: Between 1991 and 1995 this could not be done because html has no programming Welcome to my web page Today is Wednesday
- 7. index.php with php code on server 7 <html> <body> <h1> Welcome to my web page </h1> <p> Today is <?php $dayOfWeek = date(‘l’); echo($dayOfWeek); ?> </p> </body> </html>
- 8. index.php that the client receives 8 <html> <body> <h1> Welcome to my web page </h1> <p> Today is Wednesday </p> </body> </html> Welcome to my web page Today is Wednesday
- 9. index.html with JavaScript on server 9 <html> <body> <h1> Welcome to my web page </h1> <p> Today is <script> var d = new Date(); // get all date information var n = d.getDay(); // get day number 0=Sunday 1=Monday etc. var weekdays = new Array("Sunday", "Monday","Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"); document.write(weekdays(n)); </script> </p> </body> </html>
- 10. Client receives (same exact file) 10 <html> <body> <h1> Welcome to my web page </h1> <p> Today is <script> var d = new Date(); // get all date information var n = d.getDay(); // get day number 0=Sunday 1=Monday etc. var weekdays = new Array("Sunday", "Monday","Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"); document.write(weekdays(n)); </script> </p> </body> </html> Welcome to my web page Today is Thursday
- 11. Important Note: The day of week depends on the client or server. 11 For example, if you are in New Jersey and you are logged into a server in Californiaa, and you load the web page at 1:30am ET Thursday morning, If the line Today is XXXXday was calculated in a server side programming language like PHP, it would say “Wednesday” because the server is in a location where it is Wednesday. But if it was done by a client side program, like JavaScript, then the web page would say Thursday, because the Client is in a location where it is Thursday.
- 12. When to use client vs. server 12 Since the server can be very busy serving millions of clients, the motivation to do as much programming as possible on the client exists. Also, if the client can do programming without out the server, then there will be less traffic in and out of the server.
- 14. Logging in a client 14 Client enters and email and password…a check needs to be done to validate the user. Code must login to the server database, get the users password, check that the password entered matches the one in data base and if so, allow the user in.