Fabien Blechschmidt: HYPERTEXT TRANSFER PROTOCOL
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The document contains a presentation about the Hypertext Transfer Protocol (HTTP) given at the first Magento unconference on May 7-8 in Berlin, Germany. The presentation covers the history and basics of HTTP, including requests and responses, methods, status codes, caching techniques, and future developments like HTTP/2. It is intended to help attendees better understand the protocol that powers the web.
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- By John from USA (Backup Backup Backup - And Test Restores) [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons
- http://humor.beecy.net/menwomen/the-perfect-man/
35 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany](https://image.slidesharecdn.com/10-141209100433-conversion-gate01/85/Fabien-Blechschmidt-HYPERTEXT-TRANSFER-PROTOCOL-35-320.jpg)
Fabien Blechschmidt: HYPERTEXT TRANSFER PROTOCOL
- 1. 1 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 2. HTTP HYPERTEXT TRANSFER PROTOCOL 2 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 3. The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. Hypertext Transfer Protocol -- HTTP/1.1 IETF. RFC 2616 3 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 4. WHY THIS TALK? ▸ Know your tools 4 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 5. WHY THIS TALK? ▸ Caching ▸ SEO ▸ Performance 5 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 6. ABOUT ME ▸ Fabian Blechschmidt @Fabian_ikono ▸ blechschmidt@fabian-blechschmidt.de ▸ Magento since 2011 ▸ Certified Magento Developer (Plus) playing alot around, at the moment: TDD, BDD, DDD 6 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 7. OUTLINE ▸ History ▸ Request and Response ▸ Methods ▸ Status codes ▸ (Future) 7 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 8. HISTORY ▸ First idea: Vannevar Bush's vision (1930's) of the microfilm-based information retrieval and management memex As We May Think (1945) ▸ Ted Nelson in 1965 in the Xanadu Project ▸ First version: 1991 HTTP 0.9 8 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 9. OSI Application Protocol - Layer 7 ▸ HTTP ▸ TCP ▸ IP ▸ Ethernet 9 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 10. BASICS HTTP is - stateless - plaintext (readable) - request/response pattern 10 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 11. HTTP REQUEST & RESPONSE 11 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 12. HTTP REQUEST $method $path $protocol GET /my-cool-path/filename HTTP/1.1 Host: www.example.com 12 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 13. HTTP RESPONSE HTTP/1.1 200 OK Date: Mon, 23 May 2005 22:38:34 GMT Server: Apache/1.3.3.7 (Unix) (Red-Hat/Linux) Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT ETag: "3f80f-1b6-3e1cb03b" Content-Type: text/html; charset=UTF-8 Content-Length: 131 Accept-Ranges: bytes Connection: close <html> <head> <title>An Example Page</title> </head> <body> Hello World, this is a very simple HTML document. </body> </html> 13 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 14. METHODS 14 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 15. METHODS ▸ GET ▸ POST ▸ PUT ▸ DELETE 15 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 16. MORE METHODS ▸ HEAD ▸ TRACE ▸ OPTIONS ▸ PATCH 16 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 17. STATUS CODES 17 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 18. 1XX: INFORMATIONAL MESSAGES 100: Continue 101: Switching Protocols 18 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 19. 2XX: SUCCESSFUL Everything is ok! 200 OK 202 Accepted 204 No Content 205 Reset Content 206 Partial Content 19 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 20. 3XX: REDIRECTION Try it somewhere else! 300 Multiple Choices 301 Moved Permanently 302 Found 303 See Other 304 Not Modified 305 Use Proxy 307 Temporary Redirect 20 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 21. 302 FOUND Learned through reading RFCs: ▸ should follow Location header WITHOUT changing method! All browsers do this wrong. 21 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 22. CLIENT ERROR 4XX You made somewthing wrong. 400 Bad Request 401 Unauthorized 402 Payment Required 403 Forbidden 404 Not Found 405 Method Not Allowed 406 Not Acceptable 407 Proxy Authentication Required 408 Request Timeout 409 Conflict 410 Gone 22 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 23. SERVER ERROR 5XX We made something wrong. 500 Internal Server Error 501 Not Implemented 502 Bad Gateway 503 Service Unavailable 504 Gateway Timeout 505 HTTP Version Not Supported 23 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 24. CACHING1 ▸ etag ▸ Cache-Control header 1 https://tools.ietf.org/html/rfc7234 24 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 25. ETAGS First request without cached version 25 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 26. ETAGS Validating cached responses with ETags 26 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 27. CACHE-CONTROL HEADER Send Cache-Control header 27 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 28. HOW TO CACHE 28 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 29. USER AGENTS 29 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 30. USER AGENTS ▸ web browser ▸ crawler ▸ search bots -> robots.txt ▸ screen reader ▸ HTTP proxie 30 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 31. FUTURE ▸ SPDY ▸ HTTP 2.0 31 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 32. THANKS YOU QUESTIONS? http://theslidesareonline.de/http 32 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 33. RESOURCES ▸ https://developers.google.com/web/fundamentals/performance/ optimizing-content-efficiency/http-caching?hl=en ▸ http://code.tutsplus.com/tutorials/http-the-protocol-every-web-developer- must-know-part-1--net-31177 ▸ https://en.wikipedia.org/wiki/HypertextTransferProtocol ▸ http://zacstewart.com/2012/04/14/http-options-method.html 33 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 34. RESOURCES ▸ https://stackoverflow.com/questions/2068418/whats-the-difference- between-a-302-and-a-307-redirect ▸ http://www.chromium.org/spdy/spdy-whitepaper ▸ https://tools.ietf.org/html/draft-ietf-httpbis-http2-15 34 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany
- 35. IMAGES - By John from USA (Backup Backup Backup - And Test Restores) [CC-BY-2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons - http://humor.beecy.net/menwomen/the-perfect-man/ 35 — MageUnconference.org - first magento unconference 7th and 8th May in Berlin, Germany