# \[Solved\] Cells-sync fails with ERROR http-server Request error :cannot find authority **URL:** \ **Category:** Pydio Cells\ **Created:** [February 26, 2020, 10:40pm UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110 "2020-02-26T22:40:57Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![GwynethLlewelyn](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/gwynethllewelyn/32/2419_2.png) [@GwynethLlewelyn](https://forum.pydio.com/u/GwynethLlewelyn)\ **Post date:** [February 26, 2020, 10:40pm UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/1 "2020-02-26T22:40:57Z")
Whew. Pydio Cells 2.X is really, really a nightmare to setup… After hours and hours of painstakingly going through every bit of documentation I could find, I _did_ manage to get Cells actually running and I can point my browser to it and get it to do almost everything I’ve tried so far (there seem to be still some issues with indexing folders, and I’m stumped with the Pydio 8 migration tool, but I guess that with time these problems will ‘solve by themselves’…). Now it’s time to take a look at the brand new sync client. I was actually surprised that it was a small Go executable which launches its own web server, and it lets you add sync tasks from there… then again, why not? Anyway… `cells-sync` seems to launch okay until I try to add a new task and put in the URL for my Pydio Cells 2 server. Before I even get a chance to type anything (like my username), there is a modal window that pops up, very briefly (a fraction of a second) shows the webpage for the `cells-sync` local webserver, and then blanks it out immediately — so fast that I barely can _read_ anything, but after much ‘flickering’ (repeating the operation over and over again), there is some sort of ‘Disconnect’ error. I _might_ be able to do a desktop grab and turn it into a movie and then step through it frame by frame to see if I _can_ get a frame with the error… On the console (I use Terminal on my Mac), as well as on the local logs, I get ``` 2020-02-26T21:37:53.482Z INFO systray Starting sub-process with args systray --url http://localhost:3636 2020-02-26T21:37:53.482Z INFO http-server Starting HttpServer on localhost:3636 2020-02-26T21:37:53.482Z INFO scanner Use 'quit' or Ctrl+C to exit, type 'resync', 'dry', 'loop' to control syncs, 'pause' or 'resume' 2020-02-26T21:37:53.482Z INFO update.service Starting Updater Service 2020-02-26T21:37:53.804Z INFO systray 2020-02-26T21:37:53.804Z INFO systray Opened WS Connection 2020-02-26T21:37:56.485Z INFO update.service Posting Request for update 2020-02-26T21:39:38.387Z ERROR http-server Request error :cannot find authority 2020-02-26T21:39:41.484Z ERROR http-server Request error :cannot find authority 2020-02-26T21:51:18.700Z ERROR http-server Request error :cannot find authority ``` … and so forth, every time I try to submit the URL for the remote Cells server. Now, I’ve figured out that I can type `http://localhost:3636` and basically do everything from there. In this case, as opposed to a ‘blank screen of death’, I get an explicit error — `cannot find authority` — and if I insist it will eventually just say ‘Network error’. To give a little more information, I _do_ have `nginx` as a front-end, configured using [these instructions](https://pydio.com/en/docs/kb/deployment/running-cells-behind-nginx-reverse-proxy), a link that I got from reading [this GitHub topic](https://github.com/pydio/cells-sync/issues/15). `nginx` is not necessarily happy with my configuration, as shown by these logs: ``` 2020/02/26 11:47:16 [error] 19957#19957: *4 access forbidden by rule, client: my.servers.ip.address, server: my.server.name, request: "GET /auth/dex/.well-known/openid-configuration HTTP/1.1", host: "my.server.name" 2020/02/26 11:47:16 [error] 19957#19957: *1 access forbidden by rule, client: my.servers.ip.address, server: my.server.name, request: "GET /auth/dex/.well-known/openid-configuration HTTP/1.1", host: "my.server.name" 2020/02/26 11:47:16 [error] 19957#19957: *2 access forbidden by rule, client: my.servers.ip.address, server: my.server.name, request: "GET /auth/dex/.well-known/openid-configuration HTTP/1.1", host: "my.server.name" [...] 2020/02/26 19:20:25 [error] 9057#9057: *3766 access forbidden by rule, client: my.home.ip.address, server: my.server.name, request: "GET /oidc/.well-known/openid-configuration HTTP/2.0", host: "my.server.name", referrer: "https://my.server.name/" 2020/02/26 19:20:48 [error] 9057#9057: *3766 access forbidden by rule, client: my.home.ip.address, server: my.server.name, request: "GET /oidc/.well-known/openid-configuration HTTP/2.0", host: "my.server.name", referrer: "https://my.server.name/" 2020/02/26 19:20:52 [error] 9057#9057: *3766 access forbidden by rule, client: my.home.ip.address, server: my.server.name, request: "GET /oidc/.well-known/openid-configuration HTTP/2.0", host: "my.server.name", referrer: "https://my.server.name/" ``` To fix those I added the following to the `nginx` configuration: ``` location ^~ /auth/dex/.well-known/openid-configuration { proxy_buffering off; proxy_pass https://my.server.name:my-port-number$request_uri; proxy_set_header X-Real-IP $remote_addr; } location ^~ /oidc/.well-known/openid-configuration { proxy_buffering off; proxy_pass https://my.server.name:my-port-number$request_uri; proxy_set_header X-Real-IP $remote_addr; } ``` This gets rid of the `nginx` log errors _and_ as a bonus it even allows me to get over that ‘blank’ page — I get redirected to log in on ‘my’ Cells server, then I’m redirected back to the `http://localhost:3636` page, with a box saying that I’m now authenticated and can safely close that page. I did that, went back to the Cells-Sync icon, clicked on ‘Create Task’ — and promptly got another `cannot find authority` error. Whew. Back to `http://localhost:3636`. This time, the console logs for `cells-sync` are: ``` 2020-02-26T22:10:45.790Z INFO oidc Additional safe check for token https://gwynethllewelyn@my.server.name 2020-02-26T22:12:45.788Z INFO oidc Additional safe check for token https://gwynethllewelyn@my.server.name 2020-02-26T22:14:45.784Z INFO oidc Additional safe check for token https://gwynethllewelyn@my.server.name 2020-02-26T22:16:45.778Z INFO oidc Additional safe check for token https://gwynethllewelyn@my.server.name 2020-02-26T22:17:02.746Z INFO http-server Browsing https://my.server.name/ on path / 2020-02-26T22:17:03.383Z ERROR http-server Request error :transport: received the unexpected content-type "text/html; charset=utf-8" ``` Now that’s a new one! I promptly added `proxy_set_header content-type "application/json";` to the two `location`s shown above, and, for good measure, added that to the `location /ws` as well. However, the error persists! (Note that during all those changes the Cells server continued to work flawlessly when connecting via the Web to `https://my.server.name`, logging in as usual, uploading new files, looking at older ones, adding new users, etc.) So before I delve deep into the innards of the `cells-sync` code (ugh! Note that I’m not a professional programmer, just a humble Go fan & amateur programmer…), do you have any further suggestions? Final note on my overall environment: Ubuntu 16.04.6 LTS (kernel 4.4.0-174-generic), MariaDB 10.4.12, nginx 1.14.2 (I’m sort of stuck with that — this is not the place to explain why I can’t upgrade to a newer version), and I run ISPConfig 3.1.15p3 to manage most tasks on my server (which _might_ limit some things I can do with `nginx`). ---
**Author:** ![c12simple](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/c12simple/32/90_2.png) [@c12simple](https://forum.pydio.com/u/c12simple)\ **Post date:** [February 27, 2020, 4:33pm UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/2 "2020-02-27T16:33:28Z")
> [@GwynethLlewelyn](#): > > [https://my.server.name](https://my.server.name) Hello, You are using self-signed certificate or another one signed by an CA? ---
**Author:** ![GwynethLlewelyn](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/gwynethllewelyn/32/2419_2.png) [@GwynethLlewelyn](https://forum.pydio.com/u/GwynethLlewelyn)\ **Post date:** [February 28, 2020, 11:53am UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/3 "2020-02-28T11:53:08Z")
ah… I knew I had forgotten something! Aye, I’m using a certificate from Let’s Encrypt — however, it is _not_ being managed by Cells directly, but rather by ISPConfig, mostly because the domain `my.server.name` is quite old — over a decade — and has been managed that way before AjaXplorer (Pydio’s former name) was even created… I’ve checked, and the certificate _is_ being updated correctly. ---
**Author:** ![c12simple](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/c12simple/32/90_2.png) [@c12simple](https://forum.pydio.com/u/c12simple)\ **Post date:** [March 3, 2020, 9:29am UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/4 "2020-03-03T09:29:40Z")
For information, cells-sync connect to server by using gRPC protocol via http v2, So please make sure: - cells (ssl+httpv2) =\> (reverse proxy)gateway(ssl+httpv2)=\> public - certificate signed by a CA (let’s encrypt is ok) ---
**Author:** ![thimic](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/thimic/32/1182_2.png) [@thimic](https://forum.pydio.com/u/thimic)\ **Post date:** [May 14, 2020, 11:11am UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/5 "2020-05-14T11:11:21Z")
I’m having a very similar issue. I also have Cells running behind an nginx reverse proxy and a Let’s Encrypt certificate not managed by Cells. The Cells server works really well when connecting via web or the iOS app for me too. The CellsSync app fails when attempting to add an account, landing me on this page my web browser can’t open: [https://localhost:3636/servers/callback?code=jSm8gQVmEqpJGspbBBVvvLU6zvFT7sh3sVDNO5\_Hq5Q.YO0-J8YeOXV7Zde7Z\_h8zwbyE\_ALQaioteFg30T4BmM&scope=openid%20profile%20email%20pydio%20offline&state=fb48586bb8e04a559162f290e8676fb4](https://localhost:3636/servers/callback?code=jSm8gQVmEqpJGspbBBVvvLU6zvFT7sh3sVDNO5_Hq5Q.YO0-J8YeOXV7Zde7Z_h8zwbyE_ALQaioteFg30T4BmM&scope=openid%20profile%20email%20pydio%20offline&state=fb48586bb8e04a559162f290e8676fb4) My console output doesn’t report any errors at all though. It prints these lines at startup and then stays quiet, even as the failed login attempts pile up: ```auto 2020-05-14T22:40:32.749+1200 INFO Starting runner with Parent ID 24006 2020-05-14T22:40:32.750+1200 INFO scanner Use 'quit' or Ctrl+C to exit, type 'resync', 'dry', 'loop' to control syncs, 'pause' or 'resume' 2020-05-14T22:40:32.750+1200 INFO update.service Starting Updater Service 2020-05-14T22:40:32.750+1200 INFO systray Starting sub-process with args systray --url http://localhost:3636 2020-05-14T22:40:32.750+1200 INFO profiler Exposing debug profiles for process 36513 on port 6060 2020-05-14T22:40:32.750+1200 INFO http-server Starting HttpServer on localhost:3636 2020-05-14T22:40:33.073+1200 INFO systray 2020-05-14T22:40:33.073+1200 INFO systray Opened WS Connection 2020-05-14T22:40:35.756+1200 INFO update.service Posting Request for update ``` I’ve included this bit in the nginx config and set the environment variable `PYDIO_GRPC_EXTERNAL` to `33060`: ```nginx server { listen 33060 ssl http2; listen [::]:33060 ssl http2; include /config/nginx/ssl.conf; keepalive_timeout 600s; location / { include /config/nginx/proxy.conf; resolver 127.0.0.11 valid=30s; grpc_pass grpcs://172.18.0.5:33060; } } ``` Any help would be appreciated 🙂 ---
**Author:** ![thimic](https://yyz2.discourse-cdn.com/flex032/user_avatar/forum.pydio.com/thimic/32/1182_2.png) [@thimic](https://forum.pydio.com/u/thimic)\ **Post date:** [May 16, 2020, 2:59am UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/6 "2020-05-16T02:59:00Z")
Just noting that I got this to work by changing the broken URL the browser ends up at from `https://...` to `http://...`. After that, I got to the success screen and CellSync now works beautifully. ---
**Author:** ![antonio.nogueira](https://avatars.discourse-cdn.com/v4/letter/a/9dc877/32.png) [@antonio.nogueira](https://forum.pydio.com/u/antonio.nogueira)\ **Post date:** [June 4, 2020, 6:46am UTC](https://forum.pydio.com/t/solved-cells-sync-fails-with-error-http-server-request-error-cannot-find-authority/3110/8 "2020-06-04T06:46:02Z")
Hi @thimic I have the same problem on Nginx for windows. Can you please help me on how to fix it? I am following instructions from [https://pydio.com/en/docs/kb/deployment/running-cells-behind-nginx-reverse-proxy](https://pydio.com/en/docs/kb/deployment/running-cells-behind-nginx-reverse-proxy) server { listen 33060 ssl http2; listen [::]:33060 ssl http2; ssl\_certificate c:/ssl/certificate.crt; ssl\_certificate\_key c:/ssl/certificate.key; ssl\_protocols TLSv1 TLSv1.1 TLSv1.2; ssl\_ciphers HIGH:!aNULL:!MD5; keepalive\_timeout 60s; ``` location / { grpc_pass grpcs://127.0.0.1:33060; } ``` error\_log logs/proxy-grpc-error.log; access\_log logs/proxy-grpc-access.log; }