{"version":"1.0","provider_name":"Hled\u00edme na nebe","provider_url":"https:\/\/www.hledimenanebe.cz","author_name":"Lucie","title":"Co je HTTP | Hled\u00edme na nebe","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"0eJUZ2DYGp\"><a href=\"https:\/\/www.hledimenanebe.cz\/index.php\/2022\/10\/15\/co-je-http\/\">Co je HTTP<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.hledimenanebe.cz\/index.php\/2022\/10\/15\/co-je-http\/embed\/#?secret=0eJUZ2DYGp\" width=\"600\" height=\"338\" title=\"&#8222;Co je HTTP&#8220; &#8212; Hled\u00edme na nebe\" data-secret=\"0eJUZ2DYGp\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.hledimenanebe.cz\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.hledimenanebe.cz\/wp-content\/uploads\/2022\/10\/christopher-gower-m_HRfLhgABo-unsplash-scaled.jpg","thumbnail_width":2560,"thumbnail_height":1704,"description":"HTTP je zkratka pro Hypertext Transfer Protocol. Je to internetov\u00fd protokol pro komunikaci s WWW servery. P\u0159enos prob\u00edh\u00e1 v\u011bt\u0161inou pomoc\u00ed hypertextov\u00fdch dokument\u016f ve form\u00e1tu HTML nebo XML. HTTP pro jednozna\u010dnou specifikaci zdroje v s\u00edti internet pou\u017e\u00edv\u00e1 URL (Uniform Resource Locator \/ jednotn\u00fd lok\u00e1tor prost\u0159edk\u016f). Protokol s\u00e1m nedok\u00e1\u017ee zabezpe\u010dit \u0161ifrov\u00e1n\u00ed dat. K tomu vyu\u017e\u00edv\u00e1 TLS spojen\u00ed nad TCP. Takov\u00e9 pou\u017eit\u00ed je potom ozna\u010dov\u00e1no jako HTTPS. Spousta nezn\u00e1m\u00fdch? Poj\u010fme se mrknout na pojmy. Co je protokol Co je webov\u00fd server Co je hypertext Co je URL Co je TLS Link na video Co je protokol Ve sv\u011bt\u011b IT je protokol standard, podle kter\u00e9ho prob\u00edh\u00e1 elektronick\u00e1 komunikace a p\u0159enos dat mezi dv\u011bma koncov\u00fdmi body (endpoints). Nej\u010dast\u011bji jsou jimi po\u010d\u00edta\u010de, koncov\u00fdm bodem ale m\u016f\u017ee klidn\u011b b\u00fdt i jak\u00fdkoliv server, webkamera nebo t\u0159eba mobil. Krom\u011b HTTP protokolu existuj\u00ed TCP\/IP protokoly, DHCP, FTP, POP3, IMAP a dal\u0161\u00ed. Co je webov\u00fd server M\u016f\u017ee to b\u00fdt po\u010d\u00edta\u010d nebo po\u010d\u00edta\u010dov\u00fd program, kter\u00fd komunikuje s klientem pomoc\u00ed HTTP (p\u0159\u00edpadn\u011b HTTPS) protokolu. P\u0159edstavte si po\u010d\u00edta\u010dovou s\u00ed\u0165, kde na jedn\u00e9 stran\u011b je klient, na druh\u00e9 stran\u011b stoj\u00ed pr\u00e1v\u011b server. Klientem m\u016f\u017ee b\u00fdt nap\u0159\u00edklad v\u00e1\u0161 webov\u00fd prohl\u00ed\u017ee\u010d. Ten po\u0161le serveru po\u017eadavek specifikovan\u00fd webovou adresou (URL). Server potom poskytne prohl\u00ed\u017ee\u010di odpov\u011b\u010f ve form\u011b po\u017eadovan\u00e9ho obsahu (obvykle HTML). \u00a0 Poj\u010fme je\u0161t\u011b lehce omrknout stavov\u00e9 k\u00f3dy. Ur\u010dit\u011b zn\u00e1te t\u0159eba chybov\u00e9 hl\u00e1\u0161ky, to jsou stavov\u00e9 k\u00f3dy za\u010d\u00ednaj\u00edc\u00ed \u010d\u00edslicemi 4 nebo 5. Stavov\u00e9 k\u00f3dy HTTP: 2xx \u2013 \u00fasp\u011b\u0161n\u00e9 vy\u0159\u00edzen\u00ed po\u017eadavku 3xx \u2013 z\u00e1le\u017eitosti spojen\u00e9 s p\u0159esm\u011brov\u00e1n\u00edm 4xx \u2013 chyby souvisej\u00edc\u00ed s vy\u0159\u00edzen\u00edm po\u017eadavku (str\u00e1nka nen\u00ed dostupn\u00e1, apod.) 5xx \u2013 intern\u00ed chyby serveru Co je hypertext Hypertext je text, kter\u00fd obsahuje tak\u00e9 odkazy. M\u016f\u017eete se z n\u011bj prokliknout na dal\u0161\u00ed m\u00edsto v textu nebo na jin\u00fd dokument. Ano, World Wide Web (sv\u011btov\u00e1 komunika\u010dn\u00ed s\u00ed\u0165), v sou\u010dasnosti nejpou\u017e\u00edvan\u011bj\u0161\u00ed slu\u017eba na internetu, je pr\u00e1v\u011b s\u00edt\u00ed vz\u00e1jemn\u011b propojen\u00fdch hypertextov\u00fdch dokument\u016f. Ve va\u0161em prohl\u00ed\u017ee\u010di se hypertextov\u00e9 dokumenty zobrazuj\u00ed nej\u010dast\u011bji prost\u0159ednictv\u00edm jazyka HTML (Hypertext Markup Language). Co je URL Uniform Resource Locator (jednotn\u00fd lok\u00e1tor zdroje) je \u0159et\u011bzec znak\u016f, kter\u00fd specifikuje um\u00edst\u011bn\u00ed zdroje informac\u00ed na internetu. B\u011b\u017en\u011b se s n\u00edm setk\u00e1te nap\u0159\u00edklad u webov\u00e9 str\u00e1nky. \u00a0 Co je TLS TLS (Transport Layer Security) je kryptografick\u00fd protokol, kter\u00fd dok\u00e1\u017ee \u0161ifrovat obousm\u011brnou komunikaci na internetu. P\u0159enos dat umo\u017e\u0148uje Transmission Control Protocol (TCP). Ten zaji\u0161\u0165uje spojen\u00ed mezi jednotliv\u00fdmi body s\u00edt\u011b a obousm\u011brn\u00fd p\u0159enos dat mezi nimi. P\u0159edch\u016fdcem TLS protokolu je SSL (Secure Socket Layer).\u00a0 Mrkn\u011bte na p\u0159ehledn\u00e9 video, kter\u00e9 v\u00e1m n\u00e1zorn\u011b vysv\u011btl\u00ed z\u00e1klady HTTP. https:\/\/www.youtube.com\/watch?v=wW2A5SZ3GkI Pot\u0159ebujete na sv\u00e9m webu nastavit cookie li\u0161tu podle nov\u00e9 legislativy (2022)? Mrkn\u011bte sem."}