[{"data":1,"prerenderedAt":2183},["ShallowReactive",2],{"docs:/docs/self-hosting/http-auth":3},{"id":4,"title":5,"body":6,"description":2176,"extension":2177,"meta":2178,"navigation":923,"path":2179,"seo":2180,"stem":2181,"__hash__":2182},"docs/docs/self-hosting/http-auth.md","HTTP Auth Contract",{"type":7,"value":8,"toc":2166},"minimark",[9,13,26,95,110,115,122,154,161,202,220,275,284,289,296,454,460,603,616,620,623,641,701,711,715,721,748,848,866,886,890,893,1923,1926,1948,2032,2038,2085,2091,2095,2112,2120,2134,2138,2162],[10,11,5],"h1",{"id":12},"http-auth-contract",[14,15,16,17,21,22,25],"p",{},"With ",[18,19,20],"code",{},"AUTH_BACKEND=http",", kraken asks an HTTP service of yours whether a token is valid and what it may reach. The contract is three JSON endpoints. ",[18,23,24],{},"@nolag/core","'s example host implements them, and so can anything else.",[27,28,29,42],"table",{},[30,31,32],"thead",{},[33,34,35,39],"tr",{},[36,37,38],"th",{},"Setting",[36,40,41],{},"Meaning",[43,44,45,55,81],"tbody",{},[33,46,47,52],{},[48,49,50],"td",{},[18,51,20],{},[48,53,54],{},"Selects this backend",[33,56,57,62],{},[48,58,59],{},[18,60,61],{},"AUTH_HTTP_URL",[48,63,64,65,68,69,72,73,76,77,80],{},"Base URL. kraken appends ",[18,66,67],{},"/validate",", ",[18,70,71],{},"/revalidate"," and ",[18,74,75],{},"/check-room-access",", keeping any path in the base, so ",[18,78,79],{},"http://core:3000/v1/internal/actors"," works.",[33,82,83,88],{},[48,84,85],{},[18,86,87],{},"BACKEND_SECRET",[48,89,90,91,94],{},"Sent on every call as ",[18,92,93],{},"Authorization: Bearer \u003Csecret>",". Check it, and keep the service off public networks.",[14,96,97,98,101,102,72,104,106,107,109],{},"Every call is a ",[18,99,100],{},"POST"," with a JSON body. kraken waits up to 5 seconds for ",[18,103,67],{},[18,105,71],{},", and 2 seconds for ",[18,108,75],{},".",[111,112,114],"h2",{"id":113},"post-validate","POST /validate",[14,116,117,118,121],{},"Called when a client connects or sends a ",[18,119,120],{},"reauth",", unless kraken validated the same token in the last 30 seconds.",[123,124,129],"pre",{"className":125,"code":126,"language":127,"meta":128,"style":128},"language-json shiki shiki-themes github-light github-dark","{ \"accessToken\": \"the token the client sent\" }\n","json","",[18,130,131],{"__ignoreMap":128},[132,133,136,140,144,147,151],"span",{"class":134,"line":135},"line",1,[132,137,139],{"class":138},"sVt8B","{ ",[132,141,143],{"class":142},"sj4cs","\"accessToken\"",[132,145,146],{"class":138},": ",[132,148,150],{"class":149},"sZZnC","\"the token the client sent\"",[132,152,153],{"class":138}," }\n",[14,155,156,157,160],{},"Answer ",[18,158,159],{},"200"," with one of:",[123,162,164],{"className":125,"code":163,"language":127,"meta":128,"style":128},"{ \"result\": \"allow\", \"client_attrs\": { \"actor_token_id\": \"bob\", \"apps\": [] } }\n",[18,165,166],{"__ignoreMap":128},[132,167,168,170,173,175,178,180,183,186,189,191,194,196,199],{"class":134,"line":135},[132,169,139],{"class":138},[132,171,172],{"class":142},"\"result\"",[132,174,146],{"class":138},[132,176,177],{"class":149},"\"allow\"",[132,179,68],{"class":138},[132,181,182],{"class":142},"\"client_attrs\"",[132,184,185],{"class":138},": { ",[132,187,188],{"class":142},"\"actor_token_id\"",[132,190,146],{"class":138},[132,192,193],{"class":149},"\"bob\"",[132,195,68],{"class":138},[132,197,198],{"class":142},"\"apps\"",[132,200,201],{"class":138},": [] } }\n",[123,203,205],{"className":125,"code":204,"language":127,"meta":128,"style":128},"{ \"result\": \"deny\" }\n",[18,206,207],{"__ignoreMap":128},[132,208,209,211,213,215,218],{"class":134,"line":135},[132,210,139],{"class":138},[132,212,172],{"class":142},[132,214,146],{"class":138},[132,216,217],{"class":149},"\"deny\"",[132,219,153],{"class":138},[27,221,222,236],{},[30,223,224],{},[33,225,226,229],{},[36,227,228],{},"Your service",[36,230,231,232,235],{},"The client's ",[18,233,234],{},"connect()"," fails with",[43,237,238,253,265],{},[33,239,240,248],{},[48,241,242,244,245],{},[18,243,159],{}," with ",[18,246,247],{},"\"result\": \"deny\"",[48,249,250],{},[18,251,252],{},"access_denied",[33,254,255,260],{},[48,256,257,258],{},"Any status other than ",[18,259,159],{},[48,261,262],{},[18,263,264],{},"authentication_failed",[33,266,267,270],{},[48,268,269],{},"No answer within 5 seconds, or unreachable",[48,271,272],{},[18,273,274],{},"connection_failed",[14,276,277,278,280,281,283],{},"A denial is a valid answer, not an error, so return it with ",[18,279,159],{},". ",[18,282,24],{}," does the same.",[285,286,288],"h3",{"id":287},"client-attributes","Client attributes",[14,290,291,292,295],{},"What kraken v0.9.0 reads from an ",[18,293,294],{},"allow"," answer:",[27,297,298,307],{},[30,299,300],{},[33,301,302,305],{},[36,303,304],{},"Key",[36,306,41],{},[43,308,309,319,333,346,360,370,386,409,427,444],{},[33,310,311,316],{},[48,312,313],{},[18,314,315],{},"actor_token_id",[48,317,318],{},"Required. The actor's id: reported to the client, used for presence, revalidation and default load-balance groups.",[33,320,321,326],{},[48,322,323],{},[18,324,325],{},"project_id",[48,327,328,329,332],{},"Reported to the client in the ",[18,330,331],{},"auth"," reply; part of load-balance group names.",[33,334,335,340],{},[48,336,337],{},[18,338,339],{},"organization_id",[48,341,342,343,109],{},"The group kraken counts connections in for ",[18,344,345],{},"max_connections",[33,347,348,353],{},[48,349,350],{},[18,351,352],{},"actor_type",[48,354,355,356,359],{},"Default ",[18,357,358],{},"user",". Reported to the client.",[33,361,362,367],{},[48,363,364],{},[18,365,366],{},"apps",[48,368,369],{},"The actor's grants, grouped by app (below).",[33,371,372,376],{},[48,373,374],{},[18,375,345],{},[48,377,378,379,381,382,385],{},"Connection limit for the ",[18,380,339],{},", counted across the cluster. ",[18,383,384],{},"null"," or absent means unlimited.",[33,387,388,393],{},[48,389,390],{},[18,391,392],{},"scope_slug",[48,394,395,396,399,400,403,404,109],{},"An access scope. kraken rewrites a client's ",[18,397,398],{},"app/room/topic"," to ",[18,401,402],{},"app/\u003Cscope>/room/topic"," when only the scoped address matches the grants. See ",[405,406,408],"a",{"href":407},"/docs/scopes","Access Scopes",[33,410,411,416],{},[48,412,413],{},[18,414,415],{},"auth_expires_at",[48,417,418,419,422,423,426],{},"Unix seconds. kraken refuses the connect with ",[18,420,421],{},"token_expired"," once it has passed, and closes a live connection with code ",[18,424,425],{},"4003"," at its first heartbeat after it. Set it for short-lived tokens; omit it for long-lived ones.",[33,428,429,437],{},[48,430,431,68,434],{},[18,432,433],{},"persistent_session",[18,435,436],{},"session_expiry_seconds",[48,438,439,440,443],{},"Ask the MQTT broker backend for a non-clean session with this expiry. Ignored by the default ",[18,441,442],{},"syn"," broker.",[33,445,446,451],{},[48,447,448],{},[18,449,450],{},"max_message_size_bytes",[48,452,453],{},"Accepted, but not enforced in v0.9.0: every publish is held to the fixed 921,600 byte ceiling.",[14,455,456,457,459],{},"Each entry in ",[18,458,366],{},":",[27,461,462,470],{},[30,463,464],{},[33,465,466,468],{},[36,467,304],{},[36,469,41],{},[43,471,472,482,492,543,555,568,590],{},[33,473,474,479],{},[48,475,476],{},[18,477,478],{},"app_id",[48,480,481],{},"The app's id. Grants in this app resolve to internal topics under it, so every actor of the app must get the same value.",[33,483,484,489],{},[48,485,486],{},[18,487,488],{},"app_name",[48,490,491],{},"Descriptive",[33,493,494,499],{},[48,495,496],{},[18,497,498],{},"allowed_topics",[48,500,501,502,280,505,508,509,511,512,72,515,518,519,508,522,68,525,528,529,518,532,72,535,538,539,542],{},"The grants: ",[18,503,504],{},"{ \"pattern\", \"permission\", \"topic\", \"room_id\", \"room_slug\" }",[18,506,507],{},"pattern"," is ",[18,510,398],{}," and may use ",[18,513,514],{},"+",[18,516,517],{},"#","; ",[18,520,521],{},"permission",[18,523,524],{},"subscribe",[18,526,527],{},"publish"," or ",[18,530,531],{},"pubSub",[18,533,534],{},"room_id",[18,536,537],{},"room_slug"," are needed for presence and lobbies; ",[18,540,541],{},"topic"," optionally names the internal topic for an exact pattern.",[33,544,545,550],{},[48,546,547],{},[18,548,549],{},"allowed_lobbies",[48,551,552],{},[18,553,554],{},"[{ \"lobby_slug\", \"lobby_id\" }]",[33,556,557,562],{},[48,558,559],{},[18,560,561],{},"active_subscriptions",[48,563,564,565],{},"Subscriptions kraken restores when the client reconnects: addresses, or ",[18,566,567],{},"{ \"pattern\", \"topic\", \"load_balance\", \"load_balance_group\", \"filters\" }",[33,569,570,578],{},[48,571,572,68,575],{},[18,573,574],{},"hydration_webhook",[18,576,577],{},"trigger_webhook",[48,579,580,528,583,585,586,109],{},[18,581,582],{},"{ \"url\", \"headers\" }",[18,584,384],{},". See ",[405,587,589],{"href":588},"/docs/concepts/webhooks","Webhooks",[33,591,592,597],{},[48,593,594],{},[18,595,596],{},"topic_webhooks",[48,598,599,600],{},"Per-topic overrides: ",[18,601,602],{},"{ \"\u003Ctopic>\": { \"on_subscribe\": { ... }, \"on_publish\": { ... } } }",[14,604,605,606,72,608,610,611,615],{},"How grants resolve to internal topics, and why every actor of an app must agree on ",[18,607,478],{},[18,609,541],{},", is the same as for the static file: see ",[405,612,614],{"href":613},"/docs/self-hosting/static-auth#how-grants-turn-into-topics","How grants turn into topics",". Unlike the static file, an HTTP answer can carry several apps, and each grant keeps its own app's id.",[111,617,619],{"id":618},"post-revalidate","POST /revalidate",[14,621,622],{},"Called for each live connection on a heartbeat when at least 10 minutes have passed since it was last validated.",[123,624,626],{"className":125,"code":625,"language":127,"meta":128,"style":128},"{ \"actorTokenId\": \"bob\" }\n",[18,627,628],{"__ignoreMap":128},[132,629,630,632,635,637,639],{"class":134,"line":135},[132,631,139],{"class":138},[132,633,634],{"class":142},"\"actorTokenId\"",[132,636,146],{"class":138},[132,638,193],{"class":149},[132,640,153],{"class":138},[27,642,643,653],{},[30,644,645],{},[33,646,647,650],{},[36,648,649],{},"Your answer",[36,651,652],{},"What kraken does",[43,654,655,669,693],{},[33,656,657,666],{},[48,658,659,661,662,665],{},[18,660,159],{}," ",[18,663,664],{},"{ \"valid\": true, ...client_attrs... }"," with the attributes at the top level",[48,667,668],{},"Replaces the connection's grants with the new ones",[33,670,671,678],{},[48,672,673,661,675],{},[18,674,159],{},[18,676,677],{},"{ \"valid\": false, \"disconnect_reason\": \"token_revoked\" }",[48,679,680,681,684,685,688,689,692],{},"Closes the connection with WebSocket close code ",[18,682,683],{},"4001"," and the reason as the close reason (falling back to ",[18,686,687],{},"error",", then ",[18,690,691],{},"unknown",")",[33,694,695,698],{},[48,696,697],{},"Any other status, a timeout, or no answer",[48,699,700],{},"Keeps the connection, and tries again at the next heartbeat",[14,702,703,704,706,707,710],{},"We checked the second row against kraken v0.9.0 with the service below: a connection whose actor the service had revoked was closed 600.1 seconds after it connected, with code ",[18,705,683],{}," and reason ",[18,708,709],{},"token_revoked",", and no frame before the close.",[111,712,714],{"id":713},"check-room-access","Check room access",[14,716,717,720],{},[18,718,719],{},"POST /check-room-access"," is optional, and called in one situation only: a client subscribes to an address that none of its cached grants covers, typically a room created after it connected.",[123,722,724],{"className":125,"code":723,"language":127,"meta":128,"style":128},"{ \"actorTokenId\": \"bob\", \"pattern\": \"chat/late/messages\" }\n",[18,725,726],{"__ignoreMap":128},[132,727,728,730,732,734,736,738,741,743,746],{"class":134,"line":135},[132,729,139],{"class":138},[132,731,634],{"class":142},[132,733,146],{"class":138},[132,735,193],{"class":149},[132,737,68],{"class":138},[132,739,740],{"class":142},"\"pattern\"",[132,742,146],{"class":138},[132,744,745],{"class":149},"\"chat/late/messages\"",[132,747,153],{"class":138},[123,749,751],{"className":125,"code":750,"language":127,"meta":128,"style":128},"{\n  \"allow\": true,\n  \"allowed_topics\": [\n    { \"pattern\": \"chat/late/#\", \"permission\": \"pubSub\", \"app_id\": \"chat-app\", \"room_id\": \"room-late\", \"room_slug\": \"late\" }\n  ]\n}\n",[18,752,753,758,772,781,836,842],{"__ignoreMap":128},[132,754,755],{"class":134,"line":135},[132,756,757],{"class":138},"{\n",[132,759,761,764,766,769],{"class":134,"line":760},2,[132,762,763],{"class":142},"  \"allow\"",[132,765,146],{"class":138},[132,767,768],{"class":142},"true",[132,770,771],{"class":138},",\n",[132,773,775,778],{"class":134,"line":774},3,[132,776,777],{"class":142},"  \"allowed_topics\"",[132,779,780],{"class":138},": [\n",[132,782,784,787,789,791,794,796,799,801,804,806,809,811,814,816,819,821,824,826,829,831,834],{"class":134,"line":783},4,[132,785,786],{"class":138},"    { ",[132,788,740],{"class":142},[132,790,146],{"class":138},[132,792,793],{"class":149},"\"chat/late/#\"",[132,795,68],{"class":138},[132,797,798],{"class":142},"\"permission\"",[132,800,146],{"class":138},[132,802,803],{"class":149},"\"pubSub\"",[132,805,68],{"class":138},[132,807,808],{"class":142},"\"app_id\"",[132,810,146],{"class":138},[132,812,813],{"class":149},"\"chat-app\"",[132,815,68],{"class":138},[132,817,818],{"class":142},"\"room_id\"",[132,820,146],{"class":138},[132,822,823],{"class":149},"\"room-late\"",[132,825,68],{"class":138},[132,827,828],{"class":142},"\"room_slug\"",[132,830,146],{"class":138},[132,832,833],{"class":149},"\"late\"",[132,835,153],{"class":138},[132,837,839],{"class":134,"line":838},5,[132,840,841],{"class":138},"  ]\n",[132,843,845],{"class":134,"line":844},6,[132,846,847],{"class":138},"}\n",[14,849,850,851,854,855,857,858,861,862,865],{},"On ",[18,852,853],{},"allow: true",", kraken adds the returned grants to the connection and accepts the subscribe, provided one of them covers the address; each grant needs its ",[18,856,478],{},". Anything else (",[18,859,860],{},"allow: false",", an error status, no answer within 2 seconds, or a service without the endpoint) refuses the subscribe with ",[18,863,864],{},"unknown_topic",". kraken remembers a refusal for 5 seconds per actor and address, and while your service is unreachable a circuit breaker skips the call altogether.",[14,867,868,869,872,873,875,876,399,879,882,883,109],{},"This applies to subscribes only. A ",[870,871,527],"strong",{}," outside the cached grants fails with ",[18,874,864],{}," without calling your service, until the next revalidation brings the new grants or the client reconnects. To switch the check off, set ",[18,877,878],{},"cache_miss_fallback_enabled",[18,880,881],{},"false"," in kraken's ",[18,884,885],{},"sys.config",[111,887,889],{"id":888},"a-minimal-service","A minimal service",[14,891,892],{},"This Node.js service implements all three endpoints for two hard-coded tokens. It uses only the standard library:",[123,894,899],{"className":895,"code":896,"filename":897,"language":898,"meta":128,"style":128},"language-js shiki shiki-themes github-light github-dark","import http from \"node:http\";\n\nconst SECRET = process.env.BACKEND_SECRET;\n\n// Your user store. Here: two hard-coded tokens.\nconst actors = {\n  \"token-for-alice\": { id: \"alice\", active: true },\n  \"token-for-bob\": { id: \"bob\", active: true },\n};\n\n// Everything kraken needs to know about one actor.\nfunction clientAttrs(actorTokenId) {\n  return {\n    actor_token_id: actorTokenId,\n    project_id: \"my-project\",\n    organization_id: \"my-org\",\n    actor_type: \"user\",\n    apps: [\n      {\n        app_id: \"chat-app\",\n        app_name: \"chat\",\n        allowed_topics: [\n          { pattern: \"chat/general/#\", permission: \"pubSub\", room_id: \"room-general\", room_slug: \"general\" },\n        ],\n      },\n    ],\n  };\n}\n\nconst byId = (id) => Object.values(actors).find((a) => a.id === id);\n\nconst routes = {\n  \"/validate\": ({ accessToken }) => {\n    const actor = actors[accessToken];\n    return actor?.active\n      ? { result: \"allow\", client_attrs: clientAttrs(actor.id) }\n      : { result: \"deny\" };\n  },\n  \"/revalidate\": ({ actorTokenId }) => {\n    const actor = byId(actorTokenId);\n    return actor?.active\n      ? { valid: true, ...clientAttrs(actorTokenId) }\n      : { valid: false, disconnect_reason: \"token_revoked\" };\n  },\n  \"/check-room-access\": ({ actorTokenId, pattern }) => {\n    // Called when a subscribe misses the cached grants. Allow chat/late/\u003Ctopic>.\n    const [app, room] = pattern.split(\"/\");\n    if (byId(actorTokenId)?.active && app === \"chat\" && room === \"late\") {\n      return {\n        allow: true,\n        allowed_topics: [\n          { pattern: \"chat/late/#\", permission: \"pubSub\", app_id: \"chat-app\", room_id: \"room-late\", room_slug: \"late\" },\n        ],\n      };\n    }\n    return { allow: false, allowed_topics: [] };\n  },\n};\n\nhttp\n  .createServer((req, res) => {\n    let body = \"\";\n    req.on(\"data\", (chunk) => (body += chunk));\n    req.on(\"end\", () => {\n      const route = routes[req.url];\n      const authorized = req.headers.authorization === `Bearer ${SECRET}`;\n      const status = !authorized ? 401 : route ? 200 : 404;\n      const reply = status === 200 ? route(JSON.parse(body || \"{}\")) : {};\n      res.writeHead(status, { \"content-type\": \"application/json\" });\n      res.end(JSON.stringify(reply));\n    });\n  })\n  .listen(4000, () => console.log(\"auth service on :4000\"));\n","auth-service.mjs","js",[18,900,901,919,925,943,947,953,965,985,1001,1007,1012,1018,1038,1046,1052,1063,1074,1085,1091,1097,1107,1118,1124,1152,1158,1164,1170,1176,1181,1186,1238,1243,1255,1274,1288,1297,1317,1330,1336,1352,1366,1373,1393,1410,1415,1435,1441,1477,1515,1523,1533,1538,1564,1569,1575,1581,1594,1599,1604,1609,1615,1640,1656,1689,1708,1722,1748,1788,1837,1860,1880,1886,1892],{"__ignoreMap":128},[132,902,903,907,910,913,916],{"class":134,"line":135},[132,904,906],{"class":905},"szBVR","import",[132,908,909],{"class":138}," http ",[132,911,912],{"class":905},"from",[132,914,915],{"class":149}," \"node:http\"",[132,917,918],{"class":138},";\n",[132,920,921],{"class":134,"line":760},[132,922,924],{"emptyLinePlaceholder":923},true,"\n",[132,926,927,930,933,936,939,941],{"class":134,"line":774},[132,928,929],{"class":905},"const",[132,931,932],{"class":142}," SECRET",[132,934,935],{"class":905}," =",[132,937,938],{"class":138}," process.env.",[132,940,87],{"class":142},[132,942,918],{"class":138},[132,944,945],{"class":134,"line":783},[132,946,924],{"emptyLinePlaceholder":923},[132,948,949],{"class":134,"line":838},[132,950,952],{"class":951},"sJ8bj","// Your user store. Here: two hard-coded tokens.\n",[132,954,955,957,960,962],{"class":134,"line":844},[132,956,929],{"class":905},[132,958,959],{"class":142}," actors",[132,961,935],{"class":905},[132,963,964],{"class":138}," {\n",[132,966,968,971,974,977,980,982],{"class":134,"line":967},7,[132,969,970],{"class":149},"  \"token-for-alice\"",[132,972,973],{"class":138},": { id: ",[132,975,976],{"class":149},"\"alice\"",[132,978,979],{"class":138},", active: ",[132,981,768],{"class":142},[132,983,984],{"class":138}," },\n",[132,986,988,991,993,995,997,999],{"class":134,"line":987},8,[132,989,990],{"class":149},"  \"token-for-bob\"",[132,992,973],{"class":138},[132,994,193],{"class":149},[132,996,979],{"class":138},[132,998,768],{"class":142},[132,1000,984],{"class":138},[132,1002,1004],{"class":134,"line":1003},9,[132,1005,1006],{"class":138},"};\n",[132,1008,1010],{"class":134,"line":1009},10,[132,1011,924],{"emptyLinePlaceholder":923},[132,1013,1015],{"class":134,"line":1014},11,[132,1016,1017],{"class":951},"// Everything kraken needs to know about one actor.\n",[132,1019,1021,1024,1028,1031,1035],{"class":134,"line":1020},12,[132,1022,1023],{"class":905},"function",[132,1025,1027],{"class":1026},"sScJk"," clientAttrs",[132,1029,1030],{"class":138},"(",[132,1032,1034],{"class":1033},"s4XuR","actorTokenId",[132,1036,1037],{"class":138},") {\n",[132,1039,1041,1044],{"class":134,"line":1040},13,[132,1042,1043],{"class":905},"  return",[132,1045,964],{"class":138},[132,1047,1049],{"class":134,"line":1048},14,[132,1050,1051],{"class":138},"    actor_token_id: actorTokenId,\n",[132,1053,1055,1058,1061],{"class":134,"line":1054},15,[132,1056,1057],{"class":138},"    project_id: ",[132,1059,1060],{"class":149},"\"my-project\"",[132,1062,771],{"class":138},[132,1064,1066,1069,1072],{"class":134,"line":1065},16,[132,1067,1068],{"class":138},"    organization_id: ",[132,1070,1071],{"class":149},"\"my-org\"",[132,1073,771],{"class":138},[132,1075,1077,1080,1083],{"class":134,"line":1076},17,[132,1078,1079],{"class":138},"    actor_type: ",[132,1081,1082],{"class":149},"\"user\"",[132,1084,771],{"class":138},[132,1086,1088],{"class":134,"line":1087},18,[132,1089,1090],{"class":138},"    apps: [\n",[132,1092,1094],{"class":134,"line":1093},19,[132,1095,1096],{"class":138},"      {\n",[132,1098,1100,1103,1105],{"class":134,"line":1099},20,[132,1101,1102],{"class":138},"        app_id: ",[132,1104,813],{"class":149},[132,1106,771],{"class":138},[132,1108,1110,1113,1116],{"class":134,"line":1109},21,[132,1111,1112],{"class":138},"        app_name: ",[132,1114,1115],{"class":149},"\"chat\"",[132,1117,771],{"class":138},[132,1119,1121],{"class":134,"line":1120},22,[132,1122,1123],{"class":138},"        allowed_topics: [\n",[132,1125,1127,1130,1133,1136,1138,1141,1144,1147,1150],{"class":134,"line":1126},23,[132,1128,1129],{"class":138},"          { pattern: ",[132,1131,1132],{"class":149},"\"chat/general/#\"",[132,1134,1135],{"class":138},", permission: ",[132,1137,803],{"class":149},[132,1139,1140],{"class":138},", room_id: ",[132,1142,1143],{"class":149},"\"room-general\"",[132,1145,1146],{"class":138},", room_slug: ",[132,1148,1149],{"class":149},"\"general\"",[132,1151,984],{"class":138},[132,1153,1155],{"class":134,"line":1154},24,[132,1156,1157],{"class":138},"        ],\n",[132,1159,1161],{"class":134,"line":1160},25,[132,1162,1163],{"class":138},"      },\n",[132,1165,1167],{"class":134,"line":1166},26,[132,1168,1169],{"class":138},"    ],\n",[132,1171,1173],{"class":134,"line":1172},27,[132,1174,1175],{"class":138},"  };\n",[132,1177,1179],{"class":134,"line":1178},28,[132,1180,847],{"class":138},[132,1182,1184],{"class":134,"line":1183},29,[132,1185,924],{"emptyLinePlaceholder":923},[132,1187,1189,1191,1194,1196,1199,1202,1205,1208,1211,1214,1217,1220,1223,1225,1227,1229,1232,1235],{"class":134,"line":1188},30,[132,1190,929],{"class":905},[132,1192,1193],{"class":1026}," byId",[132,1195,935],{"class":905},[132,1197,1198],{"class":138}," (",[132,1200,1201],{"class":1033},"id",[132,1203,1204],{"class":138},") ",[132,1206,1207],{"class":905},"=>",[132,1209,1210],{"class":138}," Object.",[132,1212,1213],{"class":1026},"values",[132,1215,1216],{"class":138},"(actors).",[132,1218,1219],{"class":1026},"find",[132,1221,1222],{"class":138},"((",[132,1224,405],{"class":1033},[132,1226,1204],{"class":138},[132,1228,1207],{"class":905},[132,1230,1231],{"class":138}," a.id ",[132,1233,1234],{"class":905},"===",[132,1236,1237],{"class":138}," id);\n",[132,1239,1241],{"class":134,"line":1240},31,[132,1242,924],{"emptyLinePlaceholder":923},[132,1244,1246,1248,1251,1253],{"class":134,"line":1245},32,[132,1247,929],{"class":905},[132,1249,1250],{"class":142}," routes",[132,1252,935],{"class":905},[132,1254,964],{"class":138},[132,1256,1258,1261,1264,1267,1270,1272],{"class":134,"line":1257},33,[132,1259,1260],{"class":149},"  \"/validate\"",[132,1262,1263],{"class":138},": ({ ",[132,1265,1266],{"class":1033},"accessToken",[132,1268,1269],{"class":138}," }) ",[132,1271,1207],{"class":905},[132,1273,964],{"class":138},[132,1275,1277,1280,1283,1285],{"class":134,"line":1276},34,[132,1278,1279],{"class":905},"    const",[132,1281,1282],{"class":142}," actor",[132,1284,935],{"class":905},[132,1286,1287],{"class":138}," actors[accessToken];\n",[132,1289,1291,1294],{"class":134,"line":1290},35,[132,1292,1293],{"class":905},"    return",[132,1295,1296],{"class":138}," actor?.active\n",[132,1298,1300,1303,1306,1308,1311,1314],{"class":134,"line":1299},36,[132,1301,1302],{"class":905},"      ?",[132,1304,1305],{"class":138}," { result: ",[132,1307,177],{"class":149},[132,1309,1310],{"class":138},", client_attrs: ",[132,1312,1313],{"class":1026},"clientAttrs",[132,1315,1316],{"class":138},"(actor.id) }\n",[132,1318,1320,1323,1325,1327],{"class":134,"line":1319},37,[132,1321,1322],{"class":905},"      :",[132,1324,1305],{"class":138},[132,1326,217],{"class":149},[132,1328,1329],{"class":138}," };\n",[132,1331,1333],{"class":134,"line":1332},38,[132,1334,1335],{"class":138},"  },\n",[132,1337,1339,1342,1344,1346,1348,1350],{"class":134,"line":1338},39,[132,1340,1341],{"class":149},"  \"/revalidate\"",[132,1343,1263],{"class":138},[132,1345,1034],{"class":1033},[132,1347,1269],{"class":138},[132,1349,1207],{"class":905},[132,1351,964],{"class":138},[132,1353,1355,1357,1359,1361,1363],{"class":134,"line":1354},40,[132,1356,1279],{"class":905},[132,1358,1282],{"class":142},[132,1360,935],{"class":905},[132,1362,1193],{"class":1026},[132,1364,1365],{"class":138},"(actorTokenId);\n",[132,1367,1369,1371],{"class":134,"line":1368},41,[132,1370,1293],{"class":905},[132,1372,1296],{"class":138},[132,1374,1376,1378,1381,1383,1385,1388,1390],{"class":134,"line":1375},42,[132,1377,1302],{"class":905},[132,1379,1380],{"class":138}," { valid: ",[132,1382,768],{"class":142},[132,1384,68],{"class":138},[132,1386,1387],{"class":905},"...",[132,1389,1313],{"class":1026},[132,1391,1392],{"class":138},"(actorTokenId) }\n",[132,1394,1396,1398,1400,1402,1405,1408],{"class":134,"line":1395},43,[132,1397,1322],{"class":905},[132,1399,1380],{"class":138},[132,1401,881],{"class":142},[132,1403,1404],{"class":138},", disconnect_reason: ",[132,1406,1407],{"class":149},"\"token_revoked\"",[132,1409,1329],{"class":138},[132,1411,1413],{"class":134,"line":1412},44,[132,1414,1335],{"class":138},[132,1416,1418,1421,1423,1425,1427,1429,1431,1433],{"class":134,"line":1417},45,[132,1419,1420],{"class":149},"  \"/check-room-access\"",[132,1422,1263],{"class":138},[132,1424,1034],{"class":1033},[132,1426,68],{"class":138},[132,1428,507],{"class":1033},[132,1430,1269],{"class":138},[132,1432,1207],{"class":905},[132,1434,964],{"class":138},[132,1436,1438],{"class":134,"line":1437},46,[132,1439,1440],{"class":951},"    // Called when a subscribe misses the cached grants. Allow chat/late/\u003Ctopic>.\n",[132,1442,1444,1446,1449,1452,1454,1457,1460,1463,1466,1469,1471,1474],{"class":134,"line":1443},47,[132,1445,1279],{"class":905},[132,1447,1448],{"class":138}," [",[132,1450,1451],{"class":142},"app",[132,1453,68],{"class":138},[132,1455,1456],{"class":142},"room",[132,1458,1459],{"class":138},"] ",[132,1461,1462],{"class":905},"=",[132,1464,1465],{"class":138}," pattern.",[132,1467,1468],{"class":1026},"split",[132,1470,1030],{"class":138},[132,1472,1473],{"class":149},"\"/\"",[132,1475,1476],{"class":138},");\n",[132,1478,1480,1483,1485,1488,1491,1494,1497,1499,1502,1505,1508,1510,1513],{"class":134,"line":1479},48,[132,1481,1482],{"class":905},"    if",[132,1484,1198],{"class":138},[132,1486,1487],{"class":1026},"byId",[132,1489,1490],{"class":138},"(actorTokenId)?.active ",[132,1492,1493],{"class":905},"&&",[132,1495,1496],{"class":138}," app ",[132,1498,1234],{"class":905},[132,1500,1501],{"class":149}," \"chat\"",[132,1503,1504],{"class":905}," &&",[132,1506,1507],{"class":138}," room ",[132,1509,1234],{"class":905},[132,1511,1512],{"class":149}," \"late\"",[132,1514,1037],{"class":138},[132,1516,1518,1521],{"class":134,"line":1517},49,[132,1519,1520],{"class":905},"      return",[132,1522,964],{"class":138},[132,1524,1526,1529,1531],{"class":134,"line":1525},50,[132,1527,1528],{"class":138},"        allow: ",[132,1530,768],{"class":142},[132,1532,771],{"class":138},[132,1534,1536],{"class":134,"line":1535},51,[132,1537,1123],{"class":138},[132,1539,1541,1543,1545,1547,1549,1552,1554,1556,1558,1560,1562],{"class":134,"line":1540},52,[132,1542,1129],{"class":138},[132,1544,793],{"class":149},[132,1546,1135],{"class":138},[132,1548,803],{"class":149},[132,1550,1551],{"class":138},", app_id: ",[132,1553,813],{"class":149},[132,1555,1140],{"class":138},[132,1557,823],{"class":149},[132,1559,1146],{"class":138},[132,1561,833],{"class":149},[132,1563,984],{"class":138},[132,1565,1567],{"class":134,"line":1566},53,[132,1568,1157],{"class":138},[132,1570,1572],{"class":134,"line":1571},54,[132,1573,1574],{"class":138},"      };\n",[132,1576,1578],{"class":134,"line":1577},55,[132,1579,1580],{"class":138},"    }\n",[132,1582,1584,1586,1589,1591],{"class":134,"line":1583},56,[132,1585,1293],{"class":905},[132,1587,1588],{"class":138}," { allow: ",[132,1590,881],{"class":142},[132,1592,1593],{"class":138},", allowed_topics: [] };\n",[132,1595,1597],{"class":134,"line":1596},57,[132,1598,1335],{"class":138},[132,1600,1602],{"class":134,"line":1601},58,[132,1603,1006],{"class":138},[132,1605,1607],{"class":134,"line":1606},59,[132,1608,924],{"emptyLinePlaceholder":923},[132,1610,1612],{"class":134,"line":1611},60,[132,1613,1614],{"class":138},"http\n",[132,1616,1618,1621,1624,1626,1629,1631,1634,1636,1638],{"class":134,"line":1617},61,[132,1619,1620],{"class":138},"  .",[132,1622,1623],{"class":1026},"createServer",[132,1625,1222],{"class":138},[132,1627,1628],{"class":1033},"req",[132,1630,68],{"class":138},[132,1632,1633],{"class":1033},"res",[132,1635,1204],{"class":138},[132,1637,1207],{"class":905},[132,1639,964],{"class":138},[132,1641,1643,1646,1649,1651,1654],{"class":134,"line":1642},62,[132,1644,1645],{"class":905},"    let",[132,1647,1648],{"class":138}," body ",[132,1650,1462],{"class":905},[132,1652,1653],{"class":149}," \"\"",[132,1655,918],{"class":138},[132,1657,1659,1662,1665,1667,1670,1673,1676,1678,1680,1683,1686],{"class":134,"line":1658},63,[132,1660,1661],{"class":138},"    req.",[132,1663,1664],{"class":1026},"on",[132,1666,1030],{"class":138},[132,1668,1669],{"class":149},"\"data\"",[132,1671,1672],{"class":138},", (",[132,1674,1675],{"class":1033},"chunk",[132,1677,1204],{"class":138},[132,1679,1207],{"class":905},[132,1681,1682],{"class":138}," (body ",[132,1684,1685],{"class":905},"+=",[132,1687,1688],{"class":138}," chunk));\n",[132,1690,1692,1694,1696,1698,1701,1704,1706],{"class":134,"line":1691},64,[132,1693,1661],{"class":138},[132,1695,1664],{"class":1026},[132,1697,1030],{"class":138},[132,1699,1700],{"class":149},"\"end\"",[132,1702,1703],{"class":138},", () ",[132,1705,1207],{"class":905},[132,1707,964],{"class":138},[132,1709,1711,1714,1717,1719],{"class":134,"line":1710},65,[132,1712,1713],{"class":905},"      const",[132,1715,1716],{"class":142}," route",[132,1718,935],{"class":905},[132,1720,1721],{"class":138}," routes[req.url];\n",[132,1723,1725,1727,1730,1732,1735,1737,1740,1743,1746],{"class":134,"line":1724},66,[132,1726,1713],{"class":905},[132,1728,1729],{"class":142}," authorized",[132,1731,935],{"class":905},[132,1733,1734],{"class":138}," req.headers.authorization ",[132,1736,1234],{"class":905},[132,1738,1739],{"class":149}," `Bearer ${",[132,1741,1742],{"class":142},"SECRET",[132,1744,1745],{"class":149},"}`",[132,1747,918],{"class":138},[132,1749,1751,1753,1756,1758,1761,1764,1767,1770,1773,1776,1778,1781,1783,1786],{"class":134,"line":1750},67,[132,1752,1713],{"class":905},[132,1754,1755],{"class":142}," status",[132,1757,935],{"class":905},[132,1759,1760],{"class":905}," !",[132,1762,1763],{"class":138},"authorized ",[132,1765,1766],{"class":905},"?",[132,1768,1769],{"class":142}," 401",[132,1771,1772],{"class":905}," :",[132,1774,1775],{"class":138}," route ",[132,1777,1766],{"class":905},[132,1779,1780],{"class":142}," 200",[132,1782,1772],{"class":905},[132,1784,1785],{"class":142}," 404",[132,1787,918],{"class":138},[132,1789,1791,1793,1796,1798,1801,1803,1805,1808,1810,1812,1815,1817,1820,1823,1826,1829,1832,1834],{"class":134,"line":1790},68,[132,1792,1713],{"class":905},[132,1794,1795],{"class":142}," reply",[132,1797,935],{"class":905},[132,1799,1800],{"class":138}," status ",[132,1802,1234],{"class":905},[132,1804,1780],{"class":142},[132,1806,1807],{"class":905}," ?",[132,1809,1716],{"class":1026},[132,1811,1030],{"class":138},[132,1813,1814],{"class":142},"JSON",[132,1816,109],{"class":138},[132,1818,1819],{"class":1026},"parse",[132,1821,1822],{"class":138},"(body ",[132,1824,1825],{"class":905},"||",[132,1827,1828],{"class":149}," \"{}\"",[132,1830,1831],{"class":138},")) ",[132,1833,459],{"class":905},[132,1835,1836],{"class":138}," {};\n",[132,1838,1840,1843,1846,1849,1852,1854,1857],{"class":134,"line":1839},69,[132,1841,1842],{"class":138},"      res.",[132,1844,1845],{"class":1026},"writeHead",[132,1847,1848],{"class":138},"(status, { ",[132,1850,1851],{"class":149},"\"content-type\"",[132,1853,146],{"class":138},[132,1855,1856],{"class":149},"\"application/json\"",[132,1858,1859],{"class":138}," });\n",[132,1861,1863,1865,1868,1870,1872,1874,1877],{"class":134,"line":1862},70,[132,1864,1842],{"class":138},[132,1866,1867],{"class":1026},"end",[132,1869,1030],{"class":138},[132,1871,1814],{"class":142},[132,1873,109],{"class":138},[132,1875,1876],{"class":1026},"stringify",[132,1878,1879],{"class":138},"(reply));\n",[132,1881,1883],{"class":134,"line":1882},71,[132,1884,1885],{"class":138},"    });\n",[132,1887,1889],{"class":134,"line":1888},72,[132,1890,1891],{"class":138},"  })\n",[132,1893,1895,1897,1900,1902,1905,1907,1909,1912,1915,1917,1920],{"class":134,"line":1894},73,[132,1896,1620],{"class":138},[132,1898,1899],{"class":1026},"listen",[132,1901,1030],{"class":138},[132,1903,1904],{"class":142},"4000",[132,1906,1703],{"class":138},[132,1908,1207],{"class":905},[132,1910,1911],{"class":138}," console.",[132,1913,1914],{"class":1026},"log",[132,1916,1030],{"class":138},[132,1918,1919],{"class":149},"\"auth service on :4000\"",[132,1921,1922],{"class":138},"));\n",[14,1924,1925],{},"Run it, then build kraken (in your kraken checkout) and start it pointed at the service:",[123,1927,1931],{"className":1928,"code":1929,"language":1930,"meta":128,"style":128},"language-bash shiki shiki-themes github-light github-dark","BACKEND_SECRET=change-me node auth-service.mjs\n","bash",[18,1932,1933],{"__ignoreMap":128},[132,1934,1935,1937,1939,1942,1945],{"class":134,"line":135},[132,1936,87],{"class":138},[132,1938,1462],{"class":905},[132,1940,1941],{"class":149},"change-me",[132,1943,1944],{"class":1026}," node",[132,1946,1947],{"class":149}," auth-service.mjs\n",[123,1949,1951],{"className":1928,"code":1950,"language":1930,"meta":128,"style":128},"docker build -t kraken:0.9.0 .\ndocker run --rm -p 8080:8080 \\\n  -e AUTH_BACKEND=http \\\n  -e AUTH_HTTP_URL=http://host.docker.internal:4000 \\\n  -e BACKEND_SECRET=change-me \\\n  --add-host host.docker.internal:host-gateway \\\n  kraken:0.9.0\n",[18,1952,1953,1970,1989,1999,2008,2017,2027],{"__ignoreMap":128},[132,1954,1955,1958,1961,1964,1967],{"class":134,"line":135},[132,1956,1957],{"class":1026},"docker",[132,1959,1960],{"class":149}," build",[132,1962,1963],{"class":142}," -t",[132,1965,1966],{"class":149}," kraken:0.9.0",[132,1968,1969],{"class":149}," .\n",[132,1971,1972,1974,1977,1980,1983,1986],{"class":134,"line":760},[132,1973,1957],{"class":1026},[132,1975,1976],{"class":149}," run",[132,1978,1979],{"class":142}," --rm",[132,1981,1982],{"class":142}," -p",[132,1984,1985],{"class":149}," 8080:8080",[132,1987,1988],{"class":142}," \\\n",[132,1990,1991,1994,1997],{"class":134,"line":774},[132,1992,1993],{"class":142},"  -e",[132,1995,1996],{"class":149}," AUTH_BACKEND=http",[132,1998,1988],{"class":142},[132,2000,2001,2003,2006],{"class":134,"line":783},[132,2002,1993],{"class":142},[132,2004,2005],{"class":149}," AUTH_HTTP_URL=http://host.docker.internal:4000",[132,2007,1988],{"class":142},[132,2009,2010,2012,2015],{"class":134,"line":838},[132,2011,1993],{"class":142},[132,2013,2014],{"class":149}," BACKEND_SECRET=change-me",[132,2016,1988],{"class":142},[132,2018,2019,2022,2025],{"class":134,"line":844},[132,2020,2021],{"class":142},"  --add-host",[132,2023,2024],{"class":149}," host.docker.internal:host-gateway",[132,2026,1988],{"class":142},[132,2028,2029],{"class":134,"line":967},[132,2030,2031],{"class":149},"  kraken:0.9.0\n",[14,2033,2034,2035,459],{},"What we saw with this pair, connecting with ",[18,2036,2037],{},"@nolag/js-sdk",[2039,2040,2041,2054,2074],"ul",{},[2042,2043,2044,2047,2048,2051,2052,109],"li",{},[18,2045,2046],{},"token-for-bob"," connected as actor ",[18,2049,2050],{},"bob","; an unknown token was refused with ",[18,2053,252],{},[2042,2055,2056,2057,2060,2061,2064,2065,2067,2068,2071,2072,109],{},"bob's subscribe to ",[18,2058,2059],{},"chat/general/messages"," was accepted from his grants, and to ",[18,2062,2063],{},"chat/late/messages"," through ",[18,2066,75],{},". A subscribe to ",[18,2069,2070],{},"chat/secret/messages"," was refused with ",[18,2073,864],{},[2042,2075,2076,2077,2079,2080,2071,2082,2084],{},"alice's publish to ",[18,2078,2059],{}," reached bob. Her publish to ",[18,2081,2063],{},[18,2083,864],{},", because publishes do not trigger the room-access check.",[14,2086,2087,2088,2090],{},"A real service would look tokens up in a database, compare secrets in constant time, and return the actor's real grants. It should also answer ",[18,2089,67],{}," quickly: every connect waits for it.",[111,2092,2094],{"id":2093},"using-nolagcore","Using @nolag/core",[14,2096,2097,2099,2100,2103,2104,2107,2108,2111],{},[18,2098,24],{}," implements this contract through ",[18,2101,2102],{},"AuthzFacade"," and its ",[18,2105,2106],{},"toBroker*"," response adapters, and its example host serves it under ",[18,2109,2110],{},"/v1/internal/actors",". Point kraken at it with:",[123,2113,2118],{"className":2114,"code":2116,"language":2117,"meta":128},[2115],"language-text","AUTH_BACKEND=http\nAUTH_HTTP_URL=http://core:3000/v1/internal/actors\n","text",[18,2119,2116],{"__ignoreMap":128},[14,2121,2122,2123,2126,2127,2129,2130,109],{},"The example host does ",[870,2124,2125],{},"not"," check ",[18,2128,87],{},", or any other credential. A host you write for production should require the secret, and kraken will send it. See ",[405,2131,2133],{"href":2132},"/docs/self-hosting/full-stack","Full Stack",[111,2135,2137],{"id":2136},"restoring-subscriptions","Restoring subscriptions",[14,2139,2140,2141,2143,2144,72,2147,2150,2151,2154,2155,280,2159,2161],{},"kraken restores what your service returns in ",[18,2142,561],{}," when a client reconnects; it keeps no record of its own. To learn what clients subscribed to, run kraken with ",[18,2145,2146],{},"CONTROL_BACKEND=http",[18,2148,2149],{},"CONTROL_HTTP_URL",": it then posts batches of subscribe and unsubscribe events to ",[18,2152,2153],{},"{CONTROL_HTTP_URL}/subscriptions",", which your service can store and hand back. The shape of those calls is in ",[405,2156,2158],{"href":2157},"/docs/self-hosting/plugins#control","Plugins",[18,2160,24],{},"'s example host does not implement them, which is why the full-stack quickstart does not restore subscriptions.",[2163,2164,2165],"style",{},"html pre.shiki code .sVt8B, html code.shiki .sVt8B{--shiki-default:#24292E;--shiki-dark:#E1E4E8}html pre.shiki code .sj4cs, html code.shiki .sj4cs{--shiki-default:#005CC5;--shiki-dark:#79B8FF}html pre.shiki code .sZZnC, html code.shiki .sZZnC{--shiki-default:#032F62;--shiki-dark:#9ECBFF}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .szBVR, html code.shiki .szBVR{--shiki-default:#D73A49;--shiki-dark:#F97583}html pre.shiki code .sJ8bj, html code.shiki .sJ8bj{--shiki-default:#6A737D;--shiki-dark:#6A737D}html pre.shiki code .sScJk, html code.shiki .sScJk{--shiki-default:#6F42C1;--shiki-dark:#B392F0}html pre.shiki code .s4XuR, html code.shiki .s4XuR{--shiki-default:#E36209;--shiki-dark:#FFAB70}",{"title":128,"searchDepth":760,"depth":760,"links":2167},[2168,2171,2172,2173,2174,2175],{"id":113,"depth":760,"text":114,"children":2169},[2170],{"id":287,"depth":774,"text":288},{"id":618,"depth":760,"text":619},{"id":713,"depth":760,"text":714},{"id":888,"depth":760,"text":889},{"id":2093,"depth":760,"text":2094},{"id":2136,"depth":760,"text":2137},"Plug kraken into your own user store: the three JSON endpoints kraken's http auth backend calls (validate, revalidate, check-room-access), the client attributes it reads, and a minimal working service.","md",{},"/docs/self-hosting/http-auth",{"title":5,"description":2176},"docs/self-hosting/http-auth","7uHgLRPkY3vrrNSHEQYNERFD6IopPzdh6UpAS1_F5t4",1791536074918]