{"id":55407,"date":"2020-01-20T00:00:00","date_gmt":"2020-01-19T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/nginx-kak-pobedit-response_status-0"},"modified":"2020-02-18T14:03:31","modified_gmt":"2020-02-18T11:03:31","slug":"nginx-kak-pobedit-response_status-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/nginx-kak-pobedit-response_status-0","title":{"rendered":"[Nginx] \u041a\u0430\u043a \u043f\u043e\u0431\u0435\u0434\u0438\u0442\u044c response_status = 0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Artikkel, mis kuulub kategooriasse \u201em\u00e4rkmed \u00e4\u00e4rele\u201d.<\/p>\n

TL:DR:<\/b><\/p>\n

http2_max_field_size 8k; # k\u00f5ik p\u00e4\u00e4stab!<\/code><\/pre>\n
\u00dches projektis, p\u00e4rast teatud sisejuhtimise muutmist, hakkasin logides j\u00e4lgima kummalist response_code\u2019i, nimelt \u2014 0. Logides tundub see umbes j\u00e4rgmine:<\/p>\n
{\n  \"timestamp\": \"2020-01-17T08:41:51+00:00\",\n  \"remote_addr\": \"zzz.zzz.zzz.zzz\",\n  \"request_time\": 0,\n  \"upstream_response_time\": \"\",\n  \"upstream_header_time\": \"\",\n  \"http_accept_language\": \"-language\",\n  \"response_status\": 0,\n  \"request\": \"\",\n  \"host\": \"example.com\",\n  \"upstream_addr\": \"\",\n  \"http_referrer\": \"\",\n  \"request_length\": 5854,\n  \"bytes_sent\": 0,\n  \"http_user_agent\": \"\"\n}\n<\/code><\/pre>\n
<\/a><\/noindex>
\nDokumendi lugemine ja selle teemaga google'itamine ei andnud mingit tulemust \u2014 kuna v\u00e4idetakse, et selline k\u00e4itumine tekib siis, kui klient sulgeb \u00fchenduse, edastamata pealkirju. Ja igasugune eksootika wsgi_ vahem\u00e4lu suuruste osas, mis meie puhul ei sobinud absoluutselt.<\/p>\n
Kokkuv\u00f5ttes otsustasime, et probleem ei ole probleem, arvestades, et meie mahtude puhul ei ole see absoluutselt kriitiline.<\/p>\n
Just sel hetkel, kui mind j\u00e4rgnev probleem m\u00f5tlema pani: m\u00f5nel juhul avanevad lingid probleemideta http kaudu, kuid keeldusid t\u00e4ielikult t\u00f6\u00f6tamast https kaudu, pakkudes imelist: Connection #0 to host example.com left intact
\ncurl: (52) T\u00fchi vastus serverilt<\/p>\n
Logides \u00f5nnestus seda asja j\u00e4lgida ainult IP kaudu \u2014 ei ole midagi muud, nagu n\u00e4ha \u00fclaltoodud n\u00e4itest \u2014 pole. Ainult see kurikuulus staatus 0, aga ma ju tean, et ma ei katkestanud p\u00e4ringut! Hakkasin uurima, mis v\u00f5ib valesti minna. Ja k\u00f5ik osutus v\u00e4ga lihtsaks:<\/p>\n
listen 443 ssl<\/a> http2<\/b> backlog=8192;<\/i><\/p>\n
Nii et kui kasutada http2 SSL-\u00fchenduste jaoks, siis ei piisa lihtsalt p\u00e4ringute vahem\u00e4lu seadistamisest, neid tuleb seadistada ka ngx_http_v2_module'is, nimelt:<\/p>\n
S\u00fcntaks:\thttp2_max_field_size suurus;\nVaikeseade:\thttp2_max_field_size 4k;\nKontekst:\thttp, server\n<\/code><\/pre>\n
\nPiirab maksimaalset p\u00e4ise suurust, mida on tihendatud HPACK-iga. Piirang kehtib v\u00f5rdselt nii nimele kui v\u00e4\u00e4rtusele. Kui kasutatakse Huffmani kodeerimist, siis v\u00f5ivad tegelikud avatud stringide suurused olla suuremad. Vaikes\u00e4tete piirang sobib enamikuks p\u00e4ringuteks.<\/i><\/p>\n
Kokkuv\u00f5ttes, see on see. Aga miks? Kuna lingi pikkus oli suur \u2014 rohkem kui need 4k.<\/p>\n
Seades selle n\u00e4iteks 8kb (v\u00f5i nii palju, kui kindlasti piisab) \u2014 lahendame probleemi.
\nNii need asjad on.
\n
Allikas: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
\u0421\u0442\u0430\u0442\u044c\u044f \u0438\u0437 \u0440\u0430\u0437\u0440\u044f\u0434\u0430 \u00ab\u0437\u0430\u043c\u0435\u0442\u043a\u0438 \u043d\u0430 \u043f\u043e\u043b\u044f\u0445\u00bb. TL:DR: http2_max_field_size 8k; # \u0432\u0441\u0435\u0445 \u0441\u043f\u0430\u0441\u0435\u0442! \u041d\u0430 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432, \u043f\u043e\u0441\u043b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u043b\u043e\u0433\u0438\u043a\u0438 \u0431\u0435\u043a\u0435\u043d\u0434\u0430, \u043d\u0430\u0447\u0430\u043b \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0442\u044c \u0441\u0442\u0440\u0430\u043d\u043d\u044b\u0439 response_code \u0432 \u043b\u043e\u0433\u0430\u0445, \u0430 \u0438\u043c\u0435\u043d\u043d\u043e \u2014 0. \u0412 \u043b\u043e\u0433\u0430\u0445 \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043f\u0440\u0438\u043c\u0435\u0440\u043d\u043e \u0442\u0430\u043a: { "timestamp": "2020-01-17T08:41:51+00:00", "remote_addr": "zzz.zzz.zzz.zzz", "request_time": 0, "upstream_response_time": "", "upstream_header_time": "", "http_accept_language": "-language", "response_status": 0, "request": "", "host": […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-55407","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47[Nginx] \u041a\u0430\u043a \u043f\u043e\u0431\u0435\u0434\u0438\u0442\u044c response_status = 0 | ProHoster","description":"Artikkel, mis kuulub kategooriasse \u201em\u00e4rgid marginaalides\u201c. 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