The document discusses various aspects of HTTP headers, including:
- What HTTP headers are and their importance for web development. HTTP headers carry information about the client browser, requested page, and server.
- How to view HTTP headers using tools like Firebug and Live HTTP Headers plugins in Firefox.
- The structure of HTTP requests and responses. Requests contain request lines and header lines, while responses similarly contain status lines and header lines.
- Common HTTP request header fields like Host, User-Agent, Accept-Language, and Accept-Encoding and what they indicate.
- The differences between common HTTP request methods like GET, POST, and HEAD.
The document discusses the HTTP request-response cycle. It provides examples of HTTP requests using the GET and POST methods, including the headers used. It also covers HTTP response status codes and the use of cookies in HTTP requests and responses.
The document provides an overview of web technologies, including:
- The basic client-server model of the web where clients (browsers) make HTTP requests to servers, which return data like web pages.
- Key aspects of HTTP requests and responses like headers, status codes, and encoding of returned HTML content.
- How the client-server communication is repeated for each file that makes up a full web page.
Metodologias de Programação IV - Aula 4, Secção 2 - Suporte para sessões no p...Leonel Morgado
The document discusses session support in the HTTP protocol. It provides examples of HTTP requests and responses between a client and amazon.co.uk website. The responses set cookies to manage the session and client state, including session IDs and expiration times. Related readings are listed on HTTP, cookieless ASP.NET, and HTTP state management mechanisms.
This document discusses HTTP (Hypertext Transfer Protocol) and how it allows for communication between web browsers and servers on the World Wide Web. It explains what HTTP is, how browsers use it to request and receive data from servers, examples of HTTP requests, common HTTP request methods like GET and POST, how requests are handled by servers and in PHP, server response status codes, and next steps for learning more advanced topics like AJAX and REST.
The document discusses Webshell, a command line tool for making HTTP requests and processing responses. It allows sending GET and POST requests, following redirects, and provides methods for parsing JSON responses. Webshell provides an interactive shell interface for working with HTTP, similar to cURL but with added JavaScript capabilities for manipulating responses.
From zero to almost rails in about a million slides...david_e_worth
A presentation explaining the web with zero background aimed at brand new developers wanting to build Ruby on Rails applications but not knowing where to start
This presentation is a basic insight into the Application Layer Protocols i.e. Http & Https. I was asked to do this as a part of an interview round in one of the networking company.
-Kudos
Harshad Taware
Bangalore ,India
HTTP is the application-layer protocol for transmitting hypertext documents across the internet. It works by establishing a TCP connection between an HTTP client, like a web browser, and an HTTP server. The client sends a request to the server using methods like GET or POST. The server responds with a status code and the requested resource. HTTP is stateless, meaning each request is independent and servers do not remember past client interactions. Cookies and caching are techniques used to maintain some state and improve performance.
The document discusses the HTTP request-response cycle. It provides examples of HTTP requests using the GET and POST methods, including the headers used. It also covers HTTP response status codes and the use of cookies in HTTP requests and responses.
The document provides an overview of web technologies, including:
- The basic client-server model of the web where clients (browsers) make HTTP requests to servers, which return data like web pages.
- Key aspects of HTTP requests and responses like headers, status codes, and encoding of returned HTML content.
- How the client-server communication is repeated for each file that makes up a full web page.
Metodologias de Programação IV - Aula 4, Secção 2 - Suporte para sessões no p...Leonel Morgado
The document discusses session support in the HTTP protocol. It provides examples of HTTP requests and responses between a client and amazon.co.uk website. The responses set cookies to manage the session and client state, including session IDs and expiration times. Related readings are listed on HTTP, cookieless ASP.NET, and HTTP state management mechanisms.
This document discusses HTTP (Hypertext Transfer Protocol) and how it allows for communication between web browsers and servers on the World Wide Web. It explains what HTTP is, how browsers use it to request and receive data from servers, examples of HTTP requests, common HTTP request methods like GET and POST, how requests are handled by servers and in PHP, server response status codes, and next steps for learning more advanced topics like AJAX and REST.
The document discusses Webshell, a command line tool for making HTTP requests and processing responses. It allows sending GET and POST requests, following redirects, and provides methods for parsing JSON responses. Webshell provides an interactive shell interface for working with HTTP, similar to cURL but with added JavaScript capabilities for manipulating responses.
From zero to almost rails in about a million slides...david_e_worth
A presentation explaining the web with zero background aimed at brand new developers wanting to build Ruby on Rails applications but not knowing where to start
This presentation is a basic insight into the Application Layer Protocols i.e. Http & Https. I was asked to do this as a part of an interview round in one of the networking company.
-Kudos
Harshad Taware
Bangalore ,India
HTTP is the application-layer protocol for transmitting hypertext documents across the internet. It works by establishing a TCP connection between an HTTP client, like a web browser, and an HTTP server. The client sends a request to the server using methods like GET or POST. The server responds with a status code and the requested resource. HTTP is stateless, meaning each request is independent and servers do not remember past client interactions. Cookies and caching are techniques used to maintain some state and improve performance.
The document provides an overview of key web technologies including:
- The World Wide Web (WWW) is a global system of interconnected documents accessed via URLs over HTTP. It consists of web servers that host content and web browsers that render pages.
- HTTP is the fundamental protocol of the WWW. It uses a request-response model where clients make requests that servers respond to. Common requests are GET to retrieve resources and POST to submit data.
- Cookies are small pieces of data stored by the client that are included in future HTTP requests to maintain state across interactions.
The document provides an overview of HTML, HTTP, and introduces PHP. It discusses how HTML/XHTML are used to create static webpages, while PHP allows for dynamic content and user interactivity on websites by running on the server-side. PHP emerged as a leading language for building server-side applications. The document also reviews the client-server model for web requests, with browsers as clients that send HTTP requests to servers, which return responses.
The document provides an overview of forms in HTML and PHP form handling. It defines what an HTML form is, including the <form> tag and its attributes like action and method. It describes common input elements like text, textarea, radio buttons, select boxes, and passwords. It explains how forms submit data to PHP using the POST method and how that data can be accessed in PHP using the name attributes of each form element.
DEMYSTIFYING REST
Kirsten Jones
REST web services are everywhere! It seems like everything you want is available via a web service, but getting started with one of these web services can be overwhelming – and debugging the interactions bewilders some of the smartest developers I know. In this talk, I will talk about HTTP, how it works, and how to watch and understand the traffic between your system and the server. From there I’ll proceed to REST – how REST web services layer on top of HTTP and how you can expect a REST web service to behave. We’ll go over how to monitor and understand requests and responses for these services. Once we’ve covered that, I’ll talk about how OAuth is used for authentication in the framework of a REST application. PHP code samples will be shown for interacting with an OAuth REST web service, and I will cover http monitoring tools for multiple OS’s. When you’re done with this talk you’ll understand enough about REST web services to be able to get started confidently, and debug many of the common issues you may encounter.
HTTP is the protocol of the web, and in this session we will look at HTTP from a web developer's perspective. We will cover resources, messages, cookies, and authentication protocols and we will see how the web scales to meet demand using cache headers. Armed with the fundamentals about HTTP, you will have the knowledge not only to build better Web/Mobile applications but also for consuming Web API.
This is the presentation from Null/OWASP/g4h December Bangalore MeetUp by Akash Mahajan.
technology.inmobi.com/events/null-owasp-g4h-december-meetup
Abstract:
This will cover the basics of Hyper Text Transfer Protocol. You will learn how to send HTTP requests like GET, POST by crafting them manually and using a command line tool like CURL. You will also see how session management using cookies happens using the same tools.
To practice along please install curl (http://curl.haxx.se/download.html).
The document provides an overview of PHP and its capabilities compared to other web technologies. It discusses how PHP allows for dynamic content and user interactivity on websites, unlike static HTML. It also summarizes HTTP and the client-server model, and how PHP integrates as a common gateway interface (CGI) to enable server-side scripting. Key topics covered include the history of HTML/XHTML, HTTP request/response formats, and how PHP addresses limitations of static websites by running on the server-side.
Walks through the basics of the HTTP protocol, URLs, cookies and caching, with tricks and tips that can be used by web developers. From a Geek.class I did on Oct 6, 2011 for Meet the Geeks.
RFC 7540 was ratified over 2 years ago and, today, all major browsers, servers, and CDNs support the next generation of HTTP. Just over a year ago, at Velocity, we discussed the protocol, looked at some real world implications of its deployment and use, and what realistic expectations we should have from its use. Now that adoption is ramped up and the protocol is being regularly used on the Internet, it's a good time to revisit the protocol and its deployment. Has it evolved? Have we learned anything? Are all the features providing the benefits we were expecting? What's next?In this session, we'll review protocol basics and try to answer some of these questions based on real-world use of it. We'll dig into the core features like interaction with TCP, server push, priorities and dependencies, and HPACK. We'll look at these features through the lens of experience and see if good practice patterns have emerged. We'll also review available tools and discuss what protocol enhancements are in the near and not-so-near horizon.
As programmers, we concentrate so much on the server/backend side of things that we often forget to measure performance from the Client's viewpoint. This presentation describes a bunch of techniques that can be used to speed up our websites.
This presentation provides an introduction to RESTful service design patterns by starting at the HTTP basics, then looking at good designs and finally covering good and bad practices.
The document provides an overview of how the web works, including definitions and explanations of key concepts like servers, clients, protocols, URLs, HTML, and considerations for diversity and accessibility on the web. It then walks through steps to create a simple web page for a restaurant website, including adding basic document structure and text elements, an image, and basic styling with CSS.
The document provides an overview of basic web security concepts including:
1. It defines common web terms like front-end, back-end, cookies, sessions, URLs, HTTP methods, headers and status codes.
2. It discusses how cookies and sessions are used to track users and maintain state on the web.
3. It covers potential information leaks from files like robots.txt, hidden files and directories as well as techniques for searching websites like Google hacking.
4. It introduces common web vulnerabilities like XSS, CSRF and discusses how attacks are carried out and potential impacts. It also notes some PHP quirks that could be exploited if not understood.
Most of us are familiar with HTTP, but when it actually comes to creating cacheable web content, there is still a lot to be learned. In this presentation I will show you how to leverage specific mechanism to achieve a good hit rate without losing touch with some of the challenges of real-life web projects. Keywords: cache control, cache variations, conditional requests, stateful content, HTTP fragments, invalidation. The goals is to empower developers to control the behavior of reverse caching proxies like Varnish, Content Delivery Networks, or even browser cache, using the power of HTTP.
More information about this HTTP caching talk can be found on https://feryn.eu/speaking/leverage-http-to-deliver-cacheable-websites-codemotion-rome-2018/
2014 database - course 1 - www introductionHung-yu Lin
This document provides an introduction to HTML, HTTP protocols, and how to build a basic web server. It begins with an overview of what happens when a browser opens a URL, including DNS lookup and the HTTP request. It then discusses the HTTP protocol and how GET, POST, PUT, and DELETE map to CRUD operations and REST APIs. The document explains how to parse an HTTP request and handle responses in a simple web server. It also introduces CGI as a way to execute scripts or programs on the server side. Finally, it provides recommendations for text editors and references for HTML, CSS, JavaScript, and building websites.
Docker is an open platform for developers and sysadmins to
build, ship, and run distributed applications, whether on
laptops,data center VMs, or the cloud.
The document provides an overview of key web technologies including:
- The World Wide Web (WWW) is a global system of interconnected documents accessed via URLs over HTTP. It consists of web servers that host content and web browsers that render pages.
- HTTP is the fundamental protocol of the WWW. It uses a request-response model where clients make requests that servers respond to. Common requests are GET to retrieve resources and POST to submit data.
- Cookies are small pieces of data stored by the client that are included in future HTTP requests to maintain state across interactions.
The document provides an overview of HTML, HTTP, and introduces PHP. It discusses how HTML/XHTML are used to create static webpages, while PHP allows for dynamic content and user interactivity on websites by running on the server-side. PHP emerged as a leading language for building server-side applications. The document also reviews the client-server model for web requests, with browsers as clients that send HTTP requests to servers, which return responses.
The document provides an overview of forms in HTML and PHP form handling. It defines what an HTML form is, including the <form> tag and its attributes like action and method. It describes common input elements like text, textarea, radio buttons, select boxes, and passwords. It explains how forms submit data to PHP using the POST method and how that data can be accessed in PHP using the name attributes of each form element.
DEMYSTIFYING REST
Kirsten Jones
REST web services are everywhere! It seems like everything you want is available via a web service, but getting started with one of these web services can be overwhelming – and debugging the interactions bewilders some of the smartest developers I know. In this talk, I will talk about HTTP, how it works, and how to watch and understand the traffic between your system and the server. From there I’ll proceed to REST – how REST web services layer on top of HTTP and how you can expect a REST web service to behave. We’ll go over how to monitor and understand requests and responses for these services. Once we’ve covered that, I’ll talk about how OAuth is used for authentication in the framework of a REST application. PHP code samples will be shown for interacting with an OAuth REST web service, and I will cover http monitoring tools for multiple OS’s. When you’re done with this talk you’ll understand enough about REST web services to be able to get started confidently, and debug many of the common issues you may encounter.
HTTP is the protocol of the web, and in this session we will look at HTTP from a web developer's perspective. We will cover resources, messages, cookies, and authentication protocols and we will see how the web scales to meet demand using cache headers. Armed with the fundamentals about HTTP, you will have the knowledge not only to build better Web/Mobile applications but also for consuming Web API.
This is the presentation from Null/OWASP/g4h December Bangalore MeetUp by Akash Mahajan.
technology.inmobi.com/events/null-owasp-g4h-december-meetup
Abstract:
This will cover the basics of Hyper Text Transfer Protocol. You will learn how to send HTTP requests like GET, POST by crafting them manually and using a command line tool like CURL. You will also see how session management using cookies happens using the same tools.
To practice along please install curl (http://curl.haxx.se/download.html).
The document provides an overview of PHP and its capabilities compared to other web technologies. It discusses how PHP allows for dynamic content and user interactivity on websites, unlike static HTML. It also summarizes HTTP and the client-server model, and how PHP integrates as a common gateway interface (CGI) to enable server-side scripting. Key topics covered include the history of HTML/XHTML, HTTP request/response formats, and how PHP addresses limitations of static websites by running on the server-side.
Walks through the basics of the HTTP protocol, URLs, cookies and caching, with tricks and tips that can be used by web developers. From a Geek.class I did on Oct 6, 2011 for Meet the Geeks.
RFC 7540 was ratified over 2 years ago and, today, all major browsers, servers, and CDNs support the next generation of HTTP. Just over a year ago, at Velocity, we discussed the protocol, looked at some real world implications of its deployment and use, and what realistic expectations we should have from its use. Now that adoption is ramped up and the protocol is being regularly used on the Internet, it's a good time to revisit the protocol and its deployment. Has it evolved? Have we learned anything? Are all the features providing the benefits we were expecting? What's next?In this session, we'll review protocol basics and try to answer some of these questions based on real-world use of it. We'll dig into the core features like interaction with TCP, server push, priorities and dependencies, and HPACK. We'll look at these features through the lens of experience and see if good practice patterns have emerged. We'll also review available tools and discuss what protocol enhancements are in the near and not-so-near horizon.
As programmers, we concentrate so much on the server/backend side of things that we often forget to measure performance from the Client's viewpoint. This presentation describes a bunch of techniques that can be used to speed up our websites.
This presentation provides an introduction to RESTful service design patterns by starting at the HTTP basics, then looking at good designs and finally covering good and bad practices.
The document provides an overview of how the web works, including definitions and explanations of key concepts like servers, clients, protocols, URLs, HTML, and considerations for diversity and accessibility on the web. It then walks through steps to create a simple web page for a restaurant website, including adding basic document structure and text elements, an image, and basic styling with CSS.
The document provides an overview of basic web security concepts including:
1. It defines common web terms like front-end, back-end, cookies, sessions, URLs, HTTP methods, headers and status codes.
2. It discusses how cookies and sessions are used to track users and maintain state on the web.
3. It covers potential information leaks from files like robots.txt, hidden files and directories as well as techniques for searching websites like Google hacking.
4. It introduces common web vulnerabilities like XSS, CSRF and discusses how attacks are carried out and potential impacts. It also notes some PHP quirks that could be exploited if not understood.
Most of us are familiar with HTTP, but when it actually comes to creating cacheable web content, there is still a lot to be learned. In this presentation I will show you how to leverage specific mechanism to achieve a good hit rate without losing touch with some of the challenges of real-life web projects. Keywords: cache control, cache variations, conditional requests, stateful content, HTTP fragments, invalidation. The goals is to empower developers to control the behavior of reverse caching proxies like Varnish, Content Delivery Networks, or even browser cache, using the power of HTTP.
More information about this HTTP caching talk can be found on https://feryn.eu/speaking/leverage-http-to-deliver-cacheable-websites-codemotion-rome-2018/
2014 database - course 1 - www introductionHung-yu Lin
This document provides an introduction to HTML, HTTP protocols, and how to build a basic web server. It begins with an overview of what happens when a browser opens a URL, including DNS lookup and the HTTP request. It then discusses the HTTP protocol and how GET, POST, PUT, and DELETE map to CRUD operations and REST APIs. The document explains how to parse an HTTP request and handle responses in a simple web server. It also introduces CGI as a way to execute scripts or programs on the server side. Finally, it provides recommendations for text editors and references for HTML, CSS, JavaScript, and building websites.
Docker is an open platform for developers and sysadmins to
build, ship, and run distributed applications, whether on
laptops,data center VMs, or the cloud.
This document discusses HTTP and DNS. It explains that DNS is used to resolve domain names like taobao.com to IP addresses like 110.75.115.70. It also lists common HTTP status codes like 200 for OK and 404 for Not Found. HTTP headers are described, including Request headers like method and path, and Response headers like Content-Length. Links are provided for further reading on HTTP, DNS, status codes, and the domain name system.
This document discusses version control and Git. It begins with an introduction to why version control is useful. It then covers setting up Git, basic Git commands like add, commit, diff and log. It discusses checking out different commits, branches, merging, pushing and pulling from remote repositories. It introduces concepts like stash, remote repositories, cloning and the Gitflow branching model.
The document discusses code review and AJAX techniques. It includes links to the author's GitHub page, SlideShare profile, and Twitter account. It also covers HTML, JavaScript, DOM manipulation, making AJAX calls, caching data, and plagiarism.
This document appears to be notes from a product manager tracking multiple projects, issues, and tasks. It includes sections for a website project with various tasks and bugs assigned as "todo", "in progress", "in review", and "done". Another section discusses developing a master tag and task #216 being completed. Overall it provides a high-level overview of a product manager's work tracking projects, tasks, bugs and issues across versions.
14. Response HTTP Headers 当web服务器接收到之前的请求,会给出类似的响应 HTTP/1.1200 OK Date: Mon, 19 Jul 2010 13:40:03 GMT P3P: policyref="http://info.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAiIVDiCONiTELoOTPi OUR DELiSAMiOTRiUNRiPUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV" Last-Modified: Mon, 19 Jul 2010 13:40:03 +0000 Set-Cookie: delicious_us_production=f.RPhmyyeaMTaqrzmogv9WIGhABJwj2ZBXmfzl5LdKHdcuH0Pd0VbMLG3U6mhIJpZaaljQsKbSKdCV1pkYOm4eDHYj6ZHQZ6qBPlsa_nme9T9jDIs5WQlCKi6TSg5em31gME2FrLMivIoYvkugbLMh7QGa4I9W1rtzCcDvKQ.qs618aG_Izt4aBJK11c6TmV_YeW1cwx.Z1NuYmSBT4GDSwqEMrBMWtwB2VN3pYy96cW3rAzsdJqr_kizqLR74WHPXC6d1pSF.iyqb990xzQaDS7iqLmTCWt7bSd9zBfmh3Fd_e1VxPRFSk6Gn_3SiAwYAcv1PVedjk-; expires=Tue, 19-Jul-2011 13:40:03 GMT; path=/; domain=.delicious.com Content-Type: application/rss+xml; charset=utf-8 Cache-Control: private Age: 0 Transfer-Encoding: chunked Connection: keep-alive Server: YTS/1.17.21