The Basics
- Nextcloud Server version (e.g., 29.x.x):
Nextcloud Hub 9 (30.0.4)
- Operating system and version (e.g., Ubuntu 24.04):
Linux 4.4.302+ x86_64- on Synology Diskstation DS1621+
- Web server and version (e.g, Apache 2.4.25):
Apache
- Reverse proxy and version _(e.g. nginx 1.27.2)
In Synology
- PHP version (e.g, 8.3):
8.2.27
- Is this the first time you’ve seen this error? (Yes / No):
Yes
- When did this problem seem to first start?
After migrating
- Installation method (e.g. AlO, NCP, Bare Metal/Archive, etc.)
Docker on Synology
- Are you using CloudfIare, mod_security, or similar? (Yes / No)
no
Summary of the issue you are facing:
When selecting “Use the built-in CODE - Collabora Online Development Edition” I get an error: "Could not establish connection to the Collabora Online server.
Failed to connect to the remote server: cURL error 28: Operation timed out after 5001 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.mydomain.comg/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery"
I have used this guide to install NC: Synology: How to Install Nextcloud Using Docker – Marius Hosting
After that, I migrated the db, data folder and html folder from an Odroid install.
I had to install some apps that were not copied over. Both office and collabora apps are installed and enabled, and have been disabled/removed/reinstalled.
Log entries
Nextcloud
{"reqId":"wKRCIRHqktLfDBdYSrhq","level":3,"time":"2025-01-05T14:49:26+00:00","remoteAddr":"31.187.238.143","user":"marcel","app":"richdocuments","method":"GET","url":"/apps/richdocuments/settings/check","message":"cURL error 28: Operation timed out after 5001 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.mydomain.com/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery","userAgent":"Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0","version":"30.0.4.1","exception":{"Exception":"GuzzleHttp\\Exception\\ConnectException","Message":"cURL error 28: Operation timed out after 5001 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.mydomain.com/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery","Code":0,"Trace":[{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":158,"function":"createRejection","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","line":110,"function":"finishError","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},"*** sensitive parameters replaced ***",{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlHandler.php","line":47,"function":"finish","class":"GuzzleHttp\\Handler\\CurlFactory","type":"::","args":[{"__class__":"GuzzleHttp\\Handler\\CurlHandler"},"*** sensitive parameters replaced ***",{"__class__":"GuzzleHttp\\Handler\\CurlFactory"}]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":142,"function":"__invoke","class":"GuzzleHttp\\Handler\\CurlHandler","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Http/Client/DnsPinMiddleware.php","line":109,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php","line":35,"function":"OC\\Http\\Client\\{closure}","class":"OC\\Http\\Client\\DnsPinMiddleware","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":31,"function":"__invoke","class":"GuzzleHttp\\PrepareBodyMiddleware","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/RedirectMiddleware.php","line":71,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php","line":66,"function":"__invoke","class":"GuzzleHttp\\RedirectMiddleware","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/HandlerStack.php","line":75,"function":"GuzzleHttp\\{closure}","class":"GuzzleHttp\\Middleware","type":"::","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":333,"function":"__invoke","class":"GuzzleHttp\\HandlerStack","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":169,"function":"transfer","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***"]},{"file":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php","line":189,"function":"requestAsync","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/lib/private/Http/Client/Client.php","line":205,"function":"request","class":"GuzzleHttp\\Client","type":"->","args":["*** sensitive parameters replaced ***","*** sensitive parameters replaced ***",{"verify":"/var/www/html/resources/config/ca-bundle.crt","timeout":5,"nextcloud":{"allow_local_address":true},"headers":{"User-Agent":"Nextcloud Server Crawler","Accept-Encoding":"gzip"},"synchronous":true}]},{"file":"/var/www/html/custom_apps/richdocuments/lib/Service/DiscoveryService.php","line":59,"function":"get","class":"OC\\Http\\Client\\Client","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/html/custom_apps/richdocuments/lib/Service/CachedRequestService.php","line":74,"function":"sendRequest","class":"OCA\\Richdocuments\\Service\\DiscoveryService","type":"->","args":[{"__class__":"OC\\Http\\Client\\Client"}]},{"file":"/var/www/html/custom_apps/richdocuments/lib/Service/ConnectivityService.php","line":28,"function":"fetch","class":"OCA\\Richdocuments\\Service\\CachedRequestService","type":"->","args":[]},{"file":"/var/www/html/custom_apps/richdocuments/lib/Controller/SettingsController.php","line":65,"function":"testDiscovery","class":"OCA\\Richdocuments\\Service\\ConnectivityService","type":"->","args":[{"__class__":"Symfony\\Component\\Console\\Output\\NullOutput"}]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":208,"function":"checkSettings","class":"OCA\\Richdocuments\\Controller\\SettingsController","type":"->","args":[]},{"file":"/var/www/html/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Richdocuments\\Controller\\SettingsController"},"checkSettings"]},{"file":"/var/www/html/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\Richdocuments\\Controller\\SettingsController"},"checkSettings"]},{"file":"/var/www/html/lib/private/Route/Router.php","line":302,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\Richdocuments\\Controller\\SettingsController","checkSettings",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"_route":"richdocuments.settings.checksettings"}]},{"file":"/var/www/html/lib/base.php","line":1003,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/apps/richdocuments/settings/check"]},{"file":"/var/www/html/index.php","line":24,"function":"handleRequest","class":"OC","type":"::","args":[]}],"File":"/var/www/html/3rdparty/guzzlehttp/guzzle/src/Handler/CurlFactory.php","Line":210,"message":"cURL error 28: Operation timed out after 5001 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.mydomain.com/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery","exception":[],"CustomMessage":"cURL error 28: Operation timed out after 5001 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://cloud.mydomain.com/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery"},"id":"677a9cafb5efd"}
Configuration
Nextcloud
The output of occ config:list system or similar is best, but, if not possible, the contents of your config.php file from /path/to/nextcloud is fine (make sure to remove any identifiable information!):
{
"system": {
"htaccess.RewriteBase": "\/",
"memcache.local": "\\OC\\Memcache\\APCu",
"apps_paths": [
{
"path": "\/var\/www\/html\/apps",
"url": "\/apps",
"writable": false
},
{
"path": "\/var\/www\/html\/custom_apps",
"url": "\/custom_apps",
"writable": true
}
],
"maintenance_window_start": 1,
"memcache.distributed": "\\OC\\Memcache\\Redis",
"memcache.locking": "\\OC\\Memcache\\Redis",
"redis": {
"host": "***REMOVED SENSITIVE VALUE***",
"password": "***REMOVED SENSITIVE VALUE***",
"port": 6379
},
"trusted_proxies": "***REMOVED SENSITIVE VALUE***",
"trusted_domains": [
"192.168.178.27",
"cloud.mydomain.com"
],
"overwriteprotocol": "https",
"upgrade.disable-web": true,
"passwordsalt": "***REMOVED SENSITIVE VALUE***",
"secret": "***REMOVED SENSITIVE VALUE***",
"datadirectory": "***REMOVED SENSITIVE VALUE***",
"dbtype": "mysql",
"version": "30.0.4.1",
"overwrite.cli.url": "http:\/\/localhost",
"dbname": "***REMOVED SENSITIVE VALUE***",
"dbhost": "***REMOVED SENSITIVE VALUE***",
"dbport": "",
"dbtableprefix": "oc_",
"instanceid": "***REMOVED SENSITIVE VALUE***",
"mysql.utf8mb4": true,
"dbuser": "***REMOVED SENSITIVE VALUE***",
"dbpassword": "***REMOVED SENSITIVE VALUE***",
"installed": true,
"twofactor_enforced": "false",
"twofactor_enforced_groups": [],
"twofactor_enforced_excluded_groups": [],
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_smtpmode": "smtp",
"mail_sendmailmode": "smtp",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"mail_smtpauth": 1,
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***",
"maintenance": false,
"overwritehost": "cloud.mydomain.com"
}
}
Apps
Enabled:
- activity: 3.0.0
- app_api: 4.0.3
- bruteforcesettings: 3.0.0
- calendar: 5.0.8
- circles: 30.0.0
- cloud_federation_api: 1.13.0
- comments: 1.20.1
- contacts: 6.1.2
- contactsinteraction: 1.11.0
- dashboard: 7.10.0
- dav: 1.31.1
- deck: 1.14.2
- federatedfilesharing: 1.20.0
- federation: 1.20.0
- files: 2.2.0
- files_downloadlimit: 3.0.0
- files_external: 1.22.0
- files_pdfviewer: 3.0.0
- files_reminders: 1.3.0
- files_sharing: 1.22.0
- files_trashbin: 1.20.1
- files_versions: 1.23.0
- firstrunwizard: 3.0.0
- integration_mastodon: 3.0.1
- logreader: 3.0.0
- lookup_server_connector: 1.18.0
- mail: 4.1.1
- nextcloud_announcements: 2.0.0
- notifications: 3.0.0
- oauth2: 1.18.1
- password_policy: 2.0.0
- photos: 3.0.2
- privacy: 2.0.0
- provisioning_api: 1.20.0
- recommendations: 3.0.0
- related_resources: 1.5.0
- richdocuments: 8.5.3
- richdocumentscode: 24.4.1002
- serverinfo: 2.0.0
- settings: 1.13.0
- sharebymail: 1.20.0
- spreed: 20.1.1
- support: 2.0.0
- survey_client: 2.0.0
- systemtags: 1.20.0
- text: 4.1.0
- theming: 2.5.0
- twofactor_backupcodes: 1.19.0
- twofactor_totp: 12.0.0-dev
- updatenotification: 1.20.0
- user_status: 1.10.0
- viewer: 3.0.0
- weather_status: 1.10.0
- webhook_listeners: 1.1.0-dev
- workflowengine: 2.12.0
Disabled:
- admin_audit: 1.20.0
- encryption: 2.18.0
- suspicious_login: 8.0.0
- twofactor_nextcloud_notification: 4.0.0
- user_ldap: 1.21.0
I can reach curl https://cloud.mydomain.com/custom_apps/richdocumentscode/proxy.php?req=/hosting/discovery from my browser, and docker shell (from Nextcloud container). Then I get a long XML back which starts with <wopi-discovery>
Reverse proxy is done on the Diskstation. I have used the odroid install before, and there the Use the built-in CODE - Collabora Online Development Edition just worked.
I have checked the Collabora integration guide, but could not find any clues on why it is not working on my side.
Any help is appreciated. Thanks!