{"id":477498,"date":"2023-08-09T09:15:57","date_gmt":"2023-08-09T09:15:57","guid":{"rendered":""},"modified":"2023-09-05T11:14:50","modified_gmt":"2023-09-05T11:14:50","slug":"http-header","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/vn\/wiki\/http-header\/","title":{"rendered":"ti\u00eau \u0111\u1ec1 HTTP"},"content":{"rendered":"<p>Ti\u00eau \u0111\u1ec1 HTTP l\u00e0 th\u00e0nh ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a c\u00e1c y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i HTTP (Giao th\u1ee9c truy\u1ec1n si\u00eau v\u0103n b\u1ea3n) mang th\u00f4ng tin quan tr\u1ecdng cho giao ti\u1ebfp gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7.<\/p>\n<h2>Ngu\u1ed3n g\u1ed1c v\u00e0 b\u1ed1i c\u1ea3nh l\u1ecbch s\u1eed c\u1ee7a ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<p>Kh\u00e1i ni\u1ec7m v\u1ec1 HTTP v\u00e0 n\u00f3i r\u1ed9ng ra l\u00e0 c\u00e1c ti\u00eau \u0111\u1ec1 HTTP, xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a World Wide Web (WWW) v\u00e0o cu\u1ed1i nh\u1eefng n\u0103m 1980. Tim Berners-Lee, m\u1ed9t nh\u00e0 khoa h\u1ecdc m\u00e1y t\u00ednh ng\u01b0\u1eddi Anh v\u00e0 nh\u00f3m c\u1ee7a \u00f4ng t\u1ea1i CERN (T\u1ed5 ch\u1ee9c nghi\u00ean c\u1ee9u h\u1ea1t nh\u00e2n ch\u00e2u \u00c2u) \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn v\u00ec \u0111\u00e3 ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng ngh\u1ec7 web c\u01a1 b\u1ea3n, bao g\u1ed3m HTTP. T\u00e0i li\u1ec7u \u0111\u1ea7u ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ti\u00eau \u0111\u1ec1 HTTP xu\u1ea5t hi\u1ec7n trong \u0111\u1eb7c t\u1ea3 HTTP\/0.9 \u0111\u01b0\u1ee3c xu\u1ea5t b\u1ea3n v\u00e0o kho\u1ea3ng n\u0103m 1991.<\/p>\n<h2>Kh\u00e1m ph\u00e1 chi ti\u1ebft v\u1ec1 ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<p>Ti\u00eau \u0111\u1ec1 HTTP \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u00e1c tham s\u1ed1 v\u1eadn h\u00e0nh c\u1ee7a giao d\u1ecbch HTTP. Ch\u00fang t\u1ea1o th\u00e0nh m\u1ed9t ph\u1ea7n kh\u00f4ng th\u1ec3 thi\u1ebfu c\u1ee7a th\u00f4ng b\u00e1o HTTP, xu\u1ea5t hi\u1ec7n c\u1ea3 trong c\u00e1c y\u00eau c\u1ea7u HTTP do m\u00e1y kh\u00e1ch kh\u1edfi t\u1ea1o (th\u01b0\u1eddng l\u00e0 tr\u00ecnh duy\u1ec7t web) v\u00e0 trong c\u00e1c ph\u1ea3n h\u1ed3i HTTP do m\u00e1y ch\u1ee7 g\u1eedi.<\/p>\n<p>Trong giao d\u1ecbch HTTP, ti\u00eau \u0111\u1ec1 cung c\u1ea5p th\u00f4ng tin b\u1ed5 sung v\u1ec1 y\u00eau c\u1ea7u ho\u1eb7c ph\u1ea3n h\u1ed3i ho\u1eb7c v\u1ec1 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1eedi trong n\u1ed9i dung th\u01b0. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u m\u1ee5c \u0111\u00edch kh\u00e1c nhau nh\u01b0 cung c\u1ea5p si\u00eau d\u1eef li\u1ec7u, qu\u1ea3n l\u00fd b\u1ed9 nh\u1edb \u0111\u1ec7m, x\u1eed l\u00fd cookie, ki\u1ec3m so\u00e1t quy\u1ec1n truy c\u1eadp, cho bi\u1ebft ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng (T\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng), chuy\u1ec3n h\u01b0\u1edbng y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i, v.v.<\/p>\n<h2>C\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<p>Ti\u00eau \u0111\u1ec1 HTTP bao g\u1ed3m c\u00e1c tr\u01b0\u1eddng, m\u1ed7i tr\u01b0\u1eddng b\u1eaft \u0111\u1ea7u b\u1eb1ng t\u00ean tr\u01b0\u1eddng kh\u00f4ng ph\u00e2n bi\u1ec7t ch\u1eef hoa ch\u1eef th\u01b0\u1eddng, theo sau l\u00e0 d\u1ea5u hai ch\u1ea5m \u201c:\u201d, m\u1ed9t kho\u1ea3ng tr\u1eafng v\u00e0 gi\u00e1 tr\u1ecb tr\u01b0\u1eddng. Ti\u00eau \u0111\u1ec1 \u0111\u01b0\u1ee3c truy\u1ec1n sau d\u00f2ng y\u00eau c\u1ea7u ho\u1eb7c d\u00f2ng ph\u1ea3n h\u1ed3i, d\u00f2ng \u0111\u1ea7u ti\u00ean c\u1ee7a th\u00f4ng b\u00e1o HTTP.<\/p>\n<p>M\u1ed7i tr\u01b0\u1eddng ti\u00eau \u0111\u1ec1 bao g\u1ed3m t\u00ean v\u00e0 gi\u00e1 tr\u1ecb, \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch b\u1eb1ng d\u1ea5u hai ch\u1ea5m. C\u1ea5u tr\u00fac th\u01b0\u1eddng tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0y:<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><span>t\u1ea1o t\u1eadp tin<\/span><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>Sao ch\u00e9p m\u00e3<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-makefile\" data-no-translation=\"\"><span class=\"hljs-section\">Field-Name: Field Value<\/span>\n<\/code><\/div><\/div><\/pre>\n<p>V\u00ed d\u1ee5: ti\u00eau \u0111\u1ec1 \u201cLo\u1ea1i n\u1ed9i dung\u201d c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng:<\/p>\n<pre><div class=\"bg-black rounded-md mb-4\"><div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans justify-between rounded-t-md\"><span>arduino<\/span><button class=\"flex ml-auto gap-2\"><svg stroke=\"currentColor\" fill=\"none\" stroke-width=\"2\" viewbox=\"0 0 24 24\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"h-4 w-4\" height=\"1em\" width=\"1em\" ><path d=\"M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2\"><\/path><rect x=\"8\" y=\"2\" width=\"8\" height=\"4\" rx=\"1\" ry=\"1\"><\/rect><\/svg>Sao ch\u00e9p m\u00e3<\/button><\/div><div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-arduino\" data-no-translation=\"\">Content-Type: text\/html\n<\/code><\/div><\/div><\/pre>\n<h2>C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<ol>\n<li><strong>T\u00ednh linh ho\u1ea1t:<\/strong> Ti\u00eau \u0111\u1ec1 HTTP c\u00f3 th\u1ec3 mang nhi\u1ec1u lo\u1ea1i th\u00f4ng tin c\u1ea7n thi\u1ebft \u0111\u1ec3 li\u00ean l\u1ea1c hi\u1ec7u qu\u1ea3 gi\u1eefa m\u00e1y kh\u00e1ch v\u00e0 m\u00e1y ch\u1ee7.<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong> \u0110\u1eb7c t\u1ea3 HTTP cho ph\u00e9p c\u00e1c ti\u00eau \u0111\u1ec1 t\u00f9y ch\u1ec9nh, c\u00f3 ti\u1ec1n t\u1ed1 &#039;X-&#039;, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u1ee5 th\u1ec3.<\/li>\n<li><strong>Tr\u01b0\u1eddng h\u1ee3p kh\u00f4ng nh\u1ea1y c\u1ea3m:<\/strong> T\u00ean tr\u01b0\u1eddng ti\u00eau \u0111\u1ec1 kh\u00f4ng ph\u00e2n bi\u1ec7t ch\u1eef hoa ch\u1eef th\u01b0\u1eddng, theo \u0111\u1eb7c t\u1ea3 HTTP\/1.1.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n h\u00f3a:<\/strong> Nhi\u1ec1u ti\u00eau \u0111\u1ec1 \u0111\u01b0\u1ee3c C\u01a1 quan c\u1ea5p s\u1ed1 hi\u1ec7u Internet (IANA) ti\u00eau chu\u1ea9n h\u00f3a, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n cho t\u00ednh th\u1ed1ng nh\u1ea5t tr\u00ean web.<\/li>\n<\/ol>\n<h2>C\u00e1c lo\u1ea1i ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<p>C\u00f3 b\u1ed1n lo\u1ea1i ti\u00eau \u0111\u1ec1 HTTP:<\/p>\n<ol>\n<li>\n<p><strong>Ti\u00eau \u0111\u1ec1 chung:<\/strong> \u00c1p d\u1ee5ng cho c\u1ea3 y\u00eau c\u1ea7u v\u00e0 ph\u1ea3n h\u1ed3i, nh\u01b0ng kh\u00f4ng li\u00ean quan \u0111\u1ebfn d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c truy\u1ec1n trong n\u1ed9i dung. V\u00ed d\u1ee5: Via, Ki\u1ec3m so\u00e1t b\u1ed9 \u0111\u1ec7m, K\u1ebft n\u1ed1i.<\/p>\n<\/li>\n<li>\n<p><strong>Ti\u00eau \u0111\u1ec1 y\u00eau c\u1ea7u:<\/strong> Ch\u1ee9a th\u00eam th\u00f4ng tin v\u1ec1 t\u00e0i nguy\u00ean c\u1ea7n t\u00ecm n\u1ea1p ho\u1eb7c v\u1ec1 ch\u00ednh \u1ee9ng d\u1ee5ng kh\u00e1ch. V\u00ed d\u1ee5: T\u00e1c nh\u00e2n ng\u01b0\u1eddi d\u00f9ng, Ng\u00f4n ng\u1eef ch\u1ea5p nh\u1eadn, Cookie.<\/p>\n<\/li>\n<li>\n<p><strong>Ti\u00eau \u0111\u1ec1 ph\u1ea3n h\u1ed3i:<\/strong> Gi\u1eef th\u00f4ng tin b\u1ed5 sung v\u1ec1 ph\u1ea3n h\u1ed3i, nh\u01b0 v\u1ecb tr\u00ed c\u1ee7a n\u00f3 ho\u1eb7c v\u1ec1 ch\u00ednh m\u00e1y ch\u1ee7. V\u00ed d\u1ee5: Set-Cookie, ETag, WWW-X\u00e1c th\u1ef1c.<\/p>\n<\/li>\n<li>\n<p><strong>Ti\u00eau \u0111\u1ec1 th\u1ef1c th\u1ec3:<\/strong> Ch\u1ee9a th\u00f4ng tin v\u1ec1 n\u1ed9i dung c\u1ee7a t\u00e0i nguy\u00ean, nh\u01b0 \u0111\u1ed9 d\u00e0i n\u1ed9i dung ho\u1eb7c lo\u1ea1i MIME. V\u00ed d\u1ee5: Lo\u1ea1i n\u1ed9i dung, M\u00e3 h\u00f3a n\u1ed9i dung, \u0110\u1ed9 d\u00e0i n\u1ed9i dung.<\/p>\n<\/li>\n<\/ol>\n<h2>S\u1eed d\u1ee5ng ti\u00eau \u0111\u1ec1 HTTP: V\u1ea5n \u0111\u1ec1 v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n<p>M\u1eb7c d\u00f9 ti\u00eau \u0111\u1ec1 HTTP l\u00e0 n\u1ec1n t\u1ea3ng cho giao ti\u1ebfp tr\u00ean web nh\u01b0ng vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u00fang c\u00e1ch c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 s\u1ef1 c\u1ed1 v\u1ec1 b\u1ed9 nh\u1edb \u0111\u1ec7m, l\u1ed7 h\u1ed5ng b\u1ea3o m\u1eadt v\u00e0 hi\u1ec7u su\u1ea5t k\u00e9m. V\u00ed d\u1ee5: c\u00e1c ti\u00eau \u0111\u1ec1 b\u1ea3o m\u1eadt b\u1ecb \u0111\u1ecbnh c\u1ea5u h\u00ecnh sai c\u00f3 th\u1ec3 khi\u1ebfn \u1ee9ng d\u1ee5ng web d\u1ec5 b\u1ecb t\u1ea5n c\u00f4ng.<\/p>\n<p>M\u1ed9t gi\u1ea3i ph\u00e1p l\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c ti\u00eau \u0111\u1ec1 HTTP \u0111\u01b0\u1ee3c tri\u1ec3n khai v\u00e0 \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u00fang c\u00e1ch. V\u00ed d\u1ee5: n\u00ean s\u1eed d\u1ee5ng ti\u00eau \u0111\u1ec1 b\u1ea3o m\u1eadt \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c cu\u1ed9c t\u1ea5n c\u00f4ng, trong khi ti\u00eau \u0111\u1ec1 ki\u1ec3m so\u00e1t b\u1ed9 \u0111\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh c\u1ea5u h\u00ecnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t trang web t\u1ed1i \u01b0u.<\/p>\n<h2>So s\u00e1nh v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m<\/h2>\n<p>Ti\u00eau \u0111\u1ec1 HTTP, ti\u00eau \u0111\u1ec1 FTP v\u00e0 ti\u00eau \u0111\u1ec1 SMTP \u0111\u1ec1u l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng nh\u1eafn tin c\u1ee7a giao th\u1ee9c t\u01b0\u01a1ng \u1ee9ng, nh\u01b0ng m\u1ed7i ti\u00eau \u0111\u1ec1 ph\u1ee5c v\u1ee5 c\u00e1c m\u1ee5c \u0111\u00edch kh\u00e1c nhau. V\u00ed d\u1ee5: trong khi ti\u00eau \u0111\u1ec1 HTTP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ch\u1ee7 y\u1ebfu cho c\u00e1c giao d\u1ecbch tr\u00ean web th\u00ec ti\u00eau \u0111\u1ec1 SMTP \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho email v\u00e0 ti\u00eau \u0111\u1ec1 FTP \u0111\u1ec3 truy\u1ec1n t\u1ec7p.<\/p>\n<table>\n<thead>\n<tr>\n<th>Giao th\u1ee9c<\/th>\n<th>C\u00e1ch s\u1eed d\u1ee5ng ti\u00eau \u0111\u1ec1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>HTTP<\/td>\n<td>Giao d\u1ecbch web v\u00e0 truy\u1ec1n th\u00f4ng d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td>SMTP<\/td>\n<td>Truy\u1ec1n email<\/td>\n<\/tr>\n<tr>\n<td>FTP<\/td>\n<td>Chuy\u1ec3n t\u1eadp tin<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quan \u0111i\u1ec3m v\u00e0 c\u00f4ng ngh\u1ec7 t\u01b0\u01a1ng lai<\/h2>\n<p>Khi web ph\u00e1t tri\u1ec3n, giao th\u1ee9c HTTP v\u00e0 c\u00e1c ti\u00eau \u0111\u1ec1 c\u1ee7a n\u00f3 c\u0169ng v\u1eady. HTTP\/3, phi\u00ean b\u1ea3n s\u1eeda \u0111\u1ed5i l\u1edbn s\u1eafp t\u1edbi c\u1ee7a giao th\u1ee9c, gi\u1edbi thi\u1ec7u nh\u1eefng c\u1ea3i ti\u1ebfn \u0111\u00e1ng k\u1ec3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn c\u00e1c ti\u00eau \u0111\u1ec1, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u1ea3 n\u0103ng n\u00e9n n\u00e2ng cao th\u00f4ng qua QPACK \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c truy\u1ec1n ti\u00eau \u0111\u1ec1, \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ebft n\u1ed1i c\u00f3 \u0111\u1ed9 tr\u1ec5 cao.<\/p>\n<h2>M\u00e1y ch\u1ee7 proxy v\u00e0 ti\u00eau \u0111\u1ec1 HTTP<\/h2>\n<p>C\u00e1c m\u00e1y ch\u1ee7 proxy, gi\u1ed1ng nh\u01b0 c\u00e1c m\u00e1y ch\u1ee7 do OneProxy cung c\u1ea5p, thao t\u00e1c c\u00e1c ti\u00eau \u0111\u1ec1 HTTP theo m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang. V\u00ed d\u1ee5: h\u1ecd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ti\u00eau \u0111\u1ec1 \u201cVia\u201d \u0111\u1ec3 theo d\u00f5i chu\u1ed7i proxy ho\u1eb7c ti\u00eau \u0111\u1ec1 \u201cX-Forwarded-For\u201d \u0111\u1ec3 chuy\u1ec3n \u0111\u1ecba ch\u1ec9 IP ban \u0111\u1ea7u c\u1ee7a kh\u00e1ch h\u00e0ng. Do \u0111\u00f3, hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ti\u00eau \u0111\u1ec1 HTTP c\u00f3 th\u1ec3 h\u1eefu \u00edch cho b\u1ea5t k\u1ef3 ai s\u1eed d\u1ee5ng ho\u1eb7c thi\u1ebft l\u1eadp m\u00e1y ch\u1ee7 proxy.<\/p>\n<h2>Li\u00ean k\u1ebft li\u00ean quan<\/h2>\n<ol>\n<li><a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Headers\" target=\"_new\" rel=\"noopener nofollow\">T\u00e0i li\u1ec7u v\u1ec1 ti\u00eau \u0111\u1ec1 HTTP c\u1ee7a Mozilla<\/a><\/li>\n<li><a href=\"https:\/\/www.w3.org\/Protocols\/rfc2616\/rfc2616-sec14.html\" target=\"_new\" rel=\"noopener nofollow\">\u0110\u1eb7c t\u1ea3 W3C HTTP\/1.1<\/a><\/li>\n<li><a href=\"https:\/\/www.iana.org\/assignments\/message-headers\/message-headers.xhtml\" target=\"_new\" rel=\"noopener nofollow\">Ti\u00eau \u0111\u1ec1 th\u01b0 IANA<\/a><\/li>\n<li><a href=\"https:\/\/http3-explained.haxx.se\/\" target=\"_new\" rel=\"noopener nofollow\">Gi\u1ea3i th\u00edch v\u1ec1 HTTP\/3<\/a><\/li>\n<li><a href=\"https:\/\/owasp.org\/www-project-secure-headers\/\" target=\"_new\" rel=\"noopener nofollow\">D\u1ef1 \u00e1n ti\u00eau \u0111\u1ec1 an to\u00e0n OWASP<\/a><\/li>\n<\/ol>","protected":false},"featured_media":477499,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477498","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>HTTP Header: The Backbone of Web Communication<\/mark>","faq_items":[{"question":"What are HTTP headers?","answer":"<p>HTTP headers are integral components of HTTP requests and responses that carry critical information for client-server communication over the internet.<\/p>"},{"question":"Who is credited for the development of HTTP headers?","answer":"<p>British computer scientist Tim Berners-Lee and his team at CERN are credited for developing the fundamental web technologies, including HTTP headers.<\/p>"},{"question":"What is the structure of an HTTP header?","answer":"<p>An HTTP header consists of fields, each beginning with a case-insensitive field name followed by a colon \":\", a single space, and the field value. An example might look like this: <code>Content-Type: text\/html<\/code>.<\/p>"},{"question":"What are the key features of HTTP headers?","answer":"<p>HTTP headers are versatile, extensible, case-insensitive, and standardized. They can carry a wide variety of information necessary for effective communication between a client and a server.<\/p>"},{"question":"What are the different types of HTTP headers?","answer":"<p>There are four types of HTTP headers: General Headers, Request Headers, Response Headers, and Entity Headers.<\/p>"},{"question":"What problems can arise from the improper use of HTTP headers?","answer":"<p>Improper use of HTTP headers can lead to issues like caching problems, security vulnerabilities, and poor performance.<\/p>"},{"question":"How do HTTP headers compare with FTP and SMTP headers?","answer":"<p>HTTP headers, FTP headers, and SMTP headers are all part of their respective protocols' messaging systems, but each serves different purposes. For example, while HTTP headers are used primarily for web transactions, SMTP headers are used for email, and FTP headers for file transfers.<\/p>"},{"question":"How are HTTP headers related to the future web technologies?","answer":"<p>As the web evolves, so too does the HTTP protocol and its headers. The upcoming HTTP\/3 introduces significant improvements that impact headers, such as enhanced compression for optimal header transmission.<\/p>"},{"question":"How are HTTP headers used in proxy servers?","answer":"<p>Proxy servers, like those provided by OneProxy, manipulate HTTP headers in several ways to facilitate their functioning. For instance, they might use the \"Via\" header to track the proxy chain, or the \"X-Forwarded-For\" header to pass along the original IP address of a client.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/wiki\/477498\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media\/477499"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/vn\/wp-json\/wp\/v2\/media?parent=477498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}