{"topic":{"id":9196,"title":"Announcing xjtu.app chat service based on Matrix","slug":"topic","categoryId":2,"createdAt":"2024-01-20 12:44:07.882612","bumpedAt":"2024-01-23 01:06:23.578363","views":330,"postsCount":8,"highestPostNumber":15,"likeCount":2,"closed":false,"pinned":false,"pinnedGlobally":false,"pinnedAt":null,"pinnedUntil":null,"isBanner":false,"excerpt":"Matrix (sometimes stylized as [matrix]) is an open standard and communication protocol for real-time communication. It supports online chat, voice over IP, and videotelephony. Homepage: https://chat.xjtu.app Login method…","deletedAt":null,"isAnonymous":false,"category":{"id":2,"name":"网站","slug":"website","color":"986a44"},"author":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif"},"tags":["chat"]},"posts":[{"id":22357,"postNumber":1,"raw":"> **Matrix** (sometimes stylized as [**matrix**]) is an [open standard](https://en.wikipedia.org/wiki/Open_standard) and [communication protocol](https://en.wikipedia.org/wiki/Communication_protocol) for real-time communication.\n\nIt supports [online chat](https://en.wikipedia.org/wiki/Online_chat), [voice over IP](https://en.wikipedia.org/wiki/Voice_over_IP), and [videotelephony](https://en.wikipedia.org/wiki/Videotelephony).\n\nHomepage: \nLogin method: only support Single Sign-On (SSO) (one-click login with your 交大門 account)\nOn a mobile device, you can use the Element App filled with homeserver URL: `xjtu.app`.\nFor Android users, we build a pre-configured 交大門-branded apk for you(link: ).\n\nCurrent pitfalls:\n* can only search account with the format like `@admin:xjtu.app`\n* Re-Authentication Needed(加密升级可用) never ended on mobile app\n\n\n * Temporary workaround: https://github.com/element-hq/element-android/issues/6490\n * As a workaround it's possible to bootstrap cross-signing via **settings -> security -> cross-signing** or on a different client(login on Element Web/Desktop). Then the popup also disappeared in the cases I observed.\n * Culprit: This issue happens when SSO / OAuth login are setup and the account is logged using a 3rd party system. There's a loop because the client is not able to contact the login provider. As [@lub](https://github.com/lub) said, doing it manually will fix it.\n\n* Cannot synchronize username with Discourse (if you change your username here, when you log in chat, it will be a brand new account.)","cooked":"

\n
Matrix (sometimes stylized as [matrix]) is an open standard and communication protocol for real-time communication.
\n

It supports online chat, voice over IP, and videotelephony.

Homepage: https://chat.xjtu.app
\nLogin method: only support Single Sign-On (SSO) (one-click login with your 交大門 account)
\nOn a mobile device, you can use the Element App filled with homeserver URL: xjtu.app.
\nFor Android users, we build a pre-configured 交大門-branded apk for you(link: https://xjtu.app/xjtumen-g/chat.xjtu.app-latest.apk).

Current pitfalls:

\n
can only search account with the format like @admin:xjtu.app
\n
\n
Re-Authentication Needed(加密升级可用) never ended on mobile app
\n
- Temporary workaround: App hangs and circles on Re-Authentication Needed dialog · Issue #6490 · element-hq/element-android\n
  - As a workaround it's possible to bootstrap cross-signing via settings -> security -> cross-signing or on a different client(login on Element Web/Desktop). Then the popup also disappeared in the cases I observed.
  \n
- Culprit: This issue happens when SSO / OAuth login are setup and the account is logged using a 3rd party system. There's a loop because the client is not able to contact the login provider. As @lub said, doing it manually will fix it.
\n
\n
Cannot synchronize username with Discourse (if you change your username here, when you log in chat, it will be a brand new account.)
\n

\n","createdAt":"2024-01-20 12:44:08.009951","updatedAt":"2024-04-14 06:30:33.835569","replyToPostNumber":null,"replyCount":0,"likeCount":1,"wordCount":205,"liked":false,"bookmarked":false,"polls":[],"reactions":[{"reaction":"❤️","count":1,"users":[{"id":1835,"username":"Dusk","name":"夕大画家"}],"hasReacted":false}],"wiki":false,"version":10,"publicVersion":10,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22376,"postNumber":9,"raw":"快进到門友视频裸聊 :shuiyuan3:\n\nhttps://meta.discourse.org/t/discourse-chat-integration/66522","cooked":"

快进到門友视频裸聊 $\":shuiyuan3:\"$

\n","createdAt":"2024-01-21 01:32:32.659689","updatedAt":"2024-01-21 01:32:32.659689","replyToPostNumber":null,"replyCount":1,"likeCount":1,"wordCount":11,"liked":false,"bookmarked":false,"polls":[],"reactions":[{"reaction":"❤️","count":1,"users":[{"id":30,"username":"一只玉米人","name":"玉米🌽"}],"hasReacted":false}],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1941,"username":"john","name":"John","avatarUrl":"/uploads/image/5a/04/5a0499fe826e0ab0e29d97bc3d98bbc1dfebf81309f4b4426ae0c7b62bd908e8.avif","admin":false,"moderator":false,"signatureRaw":"自黄药师黄仁勋来，世人皆爱猫。余独爱老鼠之，可爱之态，活泼之动，实为人所难以抗拒。喵~\n\n:mouse_hole: :mouse: :mouse: :computer_mouse: :mouse_trap: :sob_mouse: :sweat_smile_mouse: :sleeping_mouse: :rolling_on_the_floor_laughing_mouse: :revolving_hearts_mouse: :pleading_face_mouse: :nerd_face_mouse: :mouse_hole: :melting_face_mouse: :mask_mouse: :innocent_mouse: :hugging_face_mouse: :frog_mouse: :face_with_cowboy_hat_mouse: :clown_face_mouse: :cherry_blossom_mouse: :cat_mouse:","signatureCooked":"

自黄药师黄仁勋来，世人皆爱猫。余独爱老鼠之，可爱之态，活泼之动，实为人所难以抗拒。喵~

$\":mouse_hole:\"$ 🐁 🐁 🖱️ 🪤 $\":sob_mouse:\"$ $\":sweat_smile_mouse:\"$ $\":sleeping_mouse:\"$ $\":rolling_on_the_floor_laughing_mouse:\"$ $\":revolving_hearts_mouse:\"$ $\":pleading_face_mouse:\"$ $\":nerd_face_mouse:\"$ $\":mouse_hole:\"$ $\":melting_face_mouse:\"$ $\":mask_mouse:\"$ $\":innocent_mouse:\"$ $\":hugging_face_mouse:\"$ $\":frog_mouse:\"$ $\":face_with_cowboy_hat_mouse:\"$ $\":clown_face_mouse:\"$ $\":cherry_blossom_mouse:\"$ $\":cat_mouse:\"$

\n"}},{"id":22379,"postNumber":10,"raw":"已经通过这个插件实现了类似 RSS 的效果","cooked":"

已经通过这个插件实现了类似 RSS 的效果

\n","createdAt":"2024-01-21 02:27:37.030535","updatedAt":"2024-03-17 13:07:58.77919","replyToPostNumber":9,"replyCount":0,"likeCount":0,"wordCount":17,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22381,"postNumber":11,"raw":"选择 *continue with 交大門账户* 后就会爆 500 internal server error","cooked":"

选择 continue with 交大門账户 后就会爆 500 internal server error

\n","createdAt":"2024-01-21 06:25:22.02366","updatedAt":"2024-10-25 11:19:29.337463","replyToPostNumber":null,"replyCount":2,"likeCount":0,"wordCount":18,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":6205,"username":"uika_winwing","name":null,"avatarUrl":"/uploads/image/76/3b/763b1e5ad8a424c4450bb26cea5ae532e7b1cd9da926ac5d99215d7123bf6002.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22382,"postNumber":12,"raw":"再试试，我看到早上有人注册成功的","cooked":"

再试试，我看到早上有人注册成功的

\n","createdAt":"2024-01-21 06:27:10.089356","updatedAt":"2024-03-17 13:07:58.847205","replyToPostNumber":11,"replyCount":0,"likeCount":0,"wordCount":16,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22383,"postNumber":13,"raw":"我知道了，[synapse](https://github.com/element-hq/synapse) 每隔一段时间发生卡死，单核 CPU 占用 100%，导致 500 error. 动态语言 python 写的东西容易出问题。\n\ntroubleshooting：\n日志里有大量的 federation error\n```\n2024-01-21 03:02:30,509 - synapse.handlers.federation_event - 1726 - WARNING - sync_partial_state_room-0-$yWcwWfHaeILxryn21VH8zKjHXxSsZnVietZflRpbyc0-$VGe6xJYJYSap6pcUlhQ5i-6ec8x_BN7jcLbIh8JKai4-$1gNHvtl7y_0kLjY-x5dOQCCbz77D0gazyS_bKoSBkN0 - Dropping event , which relies on auth_event $wgL9NuoEvI1hiTQKA-1disiT9yapclKF1bjizQT6yZo, which could not be found\n2024-01-21 03:02:38,371 - synapse.handlers.federation_event - 1726 - WARNING - sync_partial_state_room-0-$yWcwWfHaeILxryn21VH8zKjHXxSsZnVietZflRpbyc0-$VGe6xJYJYSap6pcUlhQ5i-6ec8x_BN7jcLbIh8JKai4-$1x6sFRSffSTDPNLLS9fIEzR7ijK8BzM2Nssc_AJGo8s - Dropping event , which relies on auth_event $d4zpOma730qisM0gC4LH7yiYFjScvcxklcUNkkQZSl0, which could not be found\n```\n把 federation 关了，应该不会再跑飞了","cooked":"

我知道了，synapse 每隔一段时间发生卡死，单核 CPU 占用 100%，导致 500 error. 动态语言 python 写的东西容易出问题。

troubleshooting：
\n日志里有大量的 federation error

2024-01-21 03:02:30,509 - synapse.handlers.federation_event - 1726 - WARNING - sync_partial_state_room-0-$yWcwWfHaeILxryn21VH8zKjHXxSsZnVietZflRpbyc0-$VGe6xJYJYSap6pcUlhQ5i-6ec8x_BN7jcLbIh8JKai4-$1gNHvtl7y_0kLjY-x5dOQCCbz77D0gazyS_bKoSBkN0 - Dropping event <FrozenEventV3 event_id=$1gNHvtl7y_0kLjY-x5dOQCCbz77D0gazyS_bKoSBkN0, type=m.room.member, state_key=@denaelepine:rgb.us.eu.org, outlier=False>, which relies on auth_event $wgL9NuoEvI1hiTQKA-1disiT9yapclKF1bjizQT6yZo, which could not be found\n2024-01-21 03:02:38,371 - synapse.handlers.federation_event - 1726 - WARNING - sync_partial_state_room-0-$yWcwWfHaeILxryn21VH8zKjHXxSsZnVietZflRpbyc0-$VGe6xJYJYSap6pcUlhQ5i-6ec8x_BN7jcLbIh8JKai4-$1x6sFRSffSTDPNLLS9fIEzR7ijK8BzM2Nssc_AJGo8s - Dropping event <FrozenEventV3 event_id=$1x6sFRSffSTDPNLLS9fIEzR7ijK8BzM2Nssc_AJGo8s, type=m.room.member, state_key=@odyssey:trygve.me, outlier=False>, which relies on auth_event $d4zpOma730qisM0gC4LH7yiYFjScvcxklcUNkkQZSl0, which could not be found\n

把 federation 关了，应该不会再跑飞了

\n","createdAt":"2024-01-21 07:47:03.062212","updatedAt":"2024-03-17 13:07:58.912742","replyToPostNumber":11,"replyCount":0,"likeCount":0,"wordCount":122,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22390,"postNumber":14,"raw":"现在 Matrix 的新用户默认启用我统一设置的表情包\n\n\n今天下午之前登录过 Matrix 的用户需要人工启用（如果偷懒可以在 discourse 里换个 username 重新登录 matrix 获得一个新账号），参考 https://github.com/maunium/stickerpicker/wiki/Enabling-the-widget：\n\n在聊天框输入 `/devtools`，之后选择 Other -> Explore account data in Element Web (注意不是 room account data), 搜索 `m.widgets`，把 `m.widgets` 内容改成：\n```\n{\n \"type\": \"m.widgets\",\n \"content\": {\n \"stickerpicker\": {\n \"content\": {\n \"type\": \"m.stickerpicker\",\n \"url\": \"https://xjtu.app/xjtumen-g/stickerpicker.web/?theme=$theme\",\n \"name\": \"Stickerpicker\",\n \"creatorUserId\": \"@えしりなか:xjtu.app\",\n \"data\": {}\n },\n \"sender\": \"@えしりなか:xjtu.app\",\n \"state_key\": \"stickerpicker\",\n \"type\": \"m.widget\",\n \"id\": \"stickerpicker\"\n }\n }\n}\n```\n正常的效果是这样的：\n![Screenshot_20240121_155835|582x499, 75%](/uploads/image/06/8d/068db7aaa6f3671d8e64ed65a2c09c6bdaaf01ce3f23262495310796beffd9be.avif)","cooked":"

现在 Matrix 的新用户默认启用我统一设置的表情包

今天下午之前登录过 Matrix 的用户需要人工启用（如果偷懒可以在 discourse 里换个 username 重新登录 matrix 获得一个新账号），参考 Home

在聊天框输入 /devtools，之后选择 Other -> Explore account data in Element Web (注意不是 room account data), 搜索 m.widgets，把 m.widgets 内容改成：

{\n  \"type\": \"m.widgets\",\n  \"content\": {\n    \"stickerpicker\": {\n      \"content\": {\n        \"type\": \"m.stickerpicker\",\n        \"url\": \"https://xjtu.app/xjtumen-g/stickerpicker.web/?theme=$theme\",\n        \"name\": \"Stickerpicker\",\n        \"creatorUserId\": \"@えしりなか:xjtu.app\",\n        \"data\": {}\n      },\n      \"sender\": \"@えしりなか:xjtu.app\",\n      \"state_key\": \"stickerpicker\",\n      \"type\": \"m.widget\",\n      \"id\": \"stickerpicker\"\n    }\n  }\n}\n

正常的效果是这样的：
\n $\"Screenshot_20240121_155835\"$

\n","createdAt":"2024-01-21 09:21:36.328212","updatedAt":"2024-03-17 13:07:59.00817","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":162,"liked":false,"bookmarked":false,"polls":[],"reactions":[{"reaction":"💔️","count":1,"users":[{"id":1941,"username":"john","name":"John"}],"hasReacted":false}],"wiki":false,"version":2,"publicVersion":2,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}},{"id":22467,"postNumber":15,"raw":"修复了 OIDC/SSO 的问题\n日志\n```\n2024-01-22 19:51:23,929 - synapse.http.server - 220 - ERROR - GET-6587 - Failed handle request \nTraceback (most recent call last):\n File \"/var/synapse/synapse/http/server.py\", line 331, in _async_render_wrapper\n callback_return = await self._async_render(request)\n File \"/var/synapse/synapse/http/server.py\", line 363, in _async_render\n callback_return = await raw_callback_return\n File \"/var/synapse/synapse/rest/synapse/client/oidc/callback_resource.py\", line 41, in _async_render_GET\n await self._oidc_handler.handle_oidc_callback(request)\n File \"/var/synapse/synapse/handlers/oidc.py\", line 358, in handle_oidc_callback\n await oidc_provider.handle_oidc_callback(request, session_data,\n File \"/var/synapse/synapse/handlers/oidc.py\", line 1249, in handle_oidc_callback\n await self._complete_oidc_login(\n File \"/var/synapse/synapse/handlers/oidc.py\", line 1371, in _complete_oidc_login\n await self._sso_handler.complete_sso_login_request(\n File \"/var/synapse/synapse/handlers/sso.py\", line 509, in complete_sso_login_request\n user_id = await self._register_mapped_user(\n File \"/var/synapse/synapse/handlers/sso.py\", line 728, in _register_mapped_user\n raise MappingException(\"localpart is invalid: %s\" % (attributes.localpart,))\nsynapse.handlers.sso.MappingException: localpart is invalid: JuicyOyster3318\n```\n根据 https://spec.matrix.org/v1.6/appendices/#historical-user-ids :\n\n> Users within Matrix are uniquely identified by their Matrix user ID. The user ID is namespaced to the homeserver which allocated the account and has the form: `@localpart:domain`\n>\n> The `localpart` of a user ID is an opaque identifier for that user. It MUST NOT be empty, and MUST contain only the characters `a-z`, `0-9`, `.`, `_`, `=`, `-`, and `/`.\n\n而 Discourse 的用户名（username）可以是大写字母。","cooked":"

修复了 OIDC/SSO 的问题
\n日志

2024-01-22 19:51:23,929 - synapse.http.server - 220 - ERROR - GET-6587 - Failed handle request <XForwardedForRequest at 0x7f9c185ddae0 method='GET' uri='/_synapse/client/oidc/callback?sso=YWRtaW49ZmFsc2UmYXZhdGFyX3VybD1odHRwcyUzQSUyRiUyRnhqdHUubWVuJTJGdXBsb2FkcyUyRmRlZmF1bHQlMkZvcmlnaW5hbCUyRjFYJTJGMjllYjUyYmRlMDE5MDE0Y2ZjOTI1OWQ5NzYwMmJiYzI0MTUwYWRiMS5qcGVnJmVtYWlsPW1lJTQwaHVpem0uY24mZXh0ZXJuYWxfaWQ9NDMxJmdyb3Vwcz12ZXJpZmllZF94anR1X21haWxfb3JfaXAlMkN0YWxlbnRzJTJDdHJ1c3RfbGV2ZWxfNCUyQ3RydXN0X2xldmVsXzAlMkN0cnVzdF9sZXZlbF8yJTJDbW9kZXJhdG9ycyUyQ3N0YWZmJTJDdHJ1c3RfbGV2ZWxfMyUyQ3RydXN0X2xldmVsXzElMkNQYXJ0aWFsRGV2ZWxvcGVycyZtb2RlcmF0b3I9dHJ1ZSZuYW1lPSZub25jZT1ZU2ZpOE9ZbDdMU3NWQ3VTbFdEcmtLOHdLeUxIMVImcmV0dXJuX3Nzb191cmw9aHR0cHMlM0ElMkYlMkZ4anR1Lm1lbiUyRl9zeW5hcHNlJTJGY2xpZW50JTJGb2lkYyUyRmNhbGxiYWNrJnVzZXJuYW1lPUp1aWN5T3lzdGVyMzMxOA%3D%3D&sig=131ae6c979eb759c31b4c475710a0bbef5979e955827cf6b9974969f777d4a1f' clientproto='HTTP/1.1' site='8008'>\nTraceback (most recent call last):\n  File \"/var/synapse/synapse/http/server.py\", line 331, in _async_render_wrapper\n    callback_return = await self._async_render(request)\n  File \"/var/synapse/synapse/http/server.py\", line 363, in _async_render\n    callback_return = await raw_callback_return\n  File \"/var/synapse/synapse/rest/synapse/client/oidc/callback_resource.py\", line 41, in _async_render_GET\n    await self._oidc_handler.handle_oidc_callback(request)\n  File \"/var/synapse/synapse/handlers/oidc.py\", line 358, in handle_oidc_callback\n    await oidc_provider.handle_oidc_callback(request, session_data,\n  File \"/var/synapse/synapse/handlers/oidc.py\", line 1249, in handle_oidc_callback\n    await self._complete_oidc_login(\n  File \"/var/synapse/synapse/handlers/oidc.py\", line 1371, in _complete_oidc_login\n    await self._sso_handler.complete_sso_login_request(\n  File \"/var/synapse/synapse/handlers/sso.py\", line 509, in complete_sso_login_request\n    user_id = await self._register_mapped_user(\n  File \"/var/synapse/synapse/handlers/sso.py\", line 728, in _register_mapped_user\n    raise MappingException(\"localpart is invalid: %s\" % (attributes.localpart,))\nsynapse.handlers.sso.MappingException: localpart is invalid: JuicyOyster3318\n

根据 Appendices :

\n
Users within Matrix are uniquely identified by their Matrix user ID. The user ID is namespaced to the homeserver which allocated the account and has the form: @localpart:domain
\n
The localpart of a user ID is an opaque identifier for that user. It MUST NOT be empty, and MUST contain only the characters a-z, 0-9, ., _, =, -, and /.
\n

而 Discourse 的用户名（username）可以是大写字母。

\n","createdAt":"2024-01-23 01:06:23.578363","updatedAt":"2024-03-17 13:07:59.097185","replyToPostNumber":null,"replyCount":0,"likeCount":0,"wordCount":200,"liked":false,"bookmarked":false,"polls":[],"reactions":[],"wiki":false,"version":1,"publicVersion":1,"deletedAt":null,"isAnonymous":false,"user":{"id":1047,"username":"anonymous_coward_old","name":"Anonymous Coward Old","avatarUrl":"/uploads/image/43/32/4332638c11248b8ff07033c11de0759a55205facfbec85e14458245a91991faf.avif","admin":false,"moderator":false,"signatureRaw":null,"signatureCooked":null}}],"hasMore":false,"lastReadPostNumber":1,"hasUrlPostNumber":false}