# Unable to use collabora online from nextcloud with Nginx

**URL:** <https://forum.collaboraonline.com/t/unable-to-use-collabora-online-from-nextcloud-with-nginx/2296>\
**Category:** Installation & Configuration\
**Created:** [January 7, 2024, 8:21pm UTC](https://forum.collaboraonline.com/t/unable-to-use-collabora-online-from-nextcloud-with-nginx/2296 "2024-01-07T20:21:55Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![floreal](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/floreal/32/994_2.png) [@floreal](https://forum.collaboraonline.com/u/floreal)\
**Post date:** [January 7, 2024, 8:21pm UTC](https://forum.collaboraonline.com/t/unable-to-use-collabora-online-from-nextcloud-with-nginx/2296/1 "2024-01-07T20:21:55Z")

</div>

I have a debian (12) server with nextcloud (27.1.5) and collabora online (CODE) installed from deb packages.

I try to swith from apache to nginx server. With apache, all was working well, but not from nginx.

From nginx, in nextcloud settings, I have the green check so config seems to be OK, but when I try to open a document I have this error:

> Failed to establish socket connection or socket connection closed unexpectedely. The reverse proxy might be misconfigured, please contact the administrator. For more infor on proxy configuration please check out …

This is my nextcloud nextcloud config on nginx:

```auto
server {
    listen 80;
    server_name cloud.mydomain.fr;

    #Redirige toutes les requêtes http vers https
    return 301 https://$host$request_uri;
}

upstream php-handler {
    #server 127.0.0.1:9000;
    server unix:/var/run/nextcloud.sock;
    #server unix:/run/php/php8.2-fpm.sock;
}

# Set the `immutable` cache control options only for assets with a cache busting `v` argument
map $arg_v $asset_immutable {
    "" "";
    default "immutable";
}

server {
    listen 443 ssl;
    server_name cloud.mydomain.fr;

    # SSL certificate configuration
    ssl_certificate /etc/letsencrypt/live/cloud.mydomain.fr/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/cloud.mydomain.fr/privkey.pem;

    root /var/www/vhosts/mydomain.fr/subdomains/cloud/httpdocs;

    # set max upload size and increase upload timeout:
    client_max_body_size 512M;
    client_body_timeout 300s;
    fastcgi_buffers 64 4K;

    # Enable gzip but do not remove ETag headers
    gzip on;
    gzip_vary on;
    gzip_comp_level 4;
    gzip_min_length 256;
    gzip_proxied expired no-cache no-store private no_last_modified no_etag auth;
    gzip_types application/atom+xml text/javascript application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/wasm application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy;

    # Pagespeed is not supported by Nextcloud, so if your server is built
    # with the `ngx_pagespeed` module, uncomment this line to disable it.
    #pagespeed off;

    # The settings allows you to optimize the HTTP2 bandwidth.
    # See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/
    # for tuning hints
    client_body_buffer_size 512k;

    # HTTP response headers borrowed from Nextcloud `.htaccess`
    add_header Referrer-Policy "no-referrer" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Permitted-Cross-Domain-Policies "none" always;
    add_header X-Robots-Tag "noindex, nofollow" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # Remove X-Powered-By, which is an information leak
    fastcgi_hide_header X-Powered-By;

    # Add .mjs as a file extension for javascript
    # Either include it in the default mime.types list
    # or include you can include that list explicitly and add the file extension
    # only for Nextcloud like below:
    include mime.types;
    types {
        text/javascript js mjs;
    }

    # Specify how to handle directories -- specifying `/index.php$request_uri`
    # here as the fallback means that Nginx always exhibits the desired behaviour
    # when a client requests a path that corresponds to a directory that exists
    # on the server. In particular, if that directory contains an index.php file,
    # that file is correctly served; if it doesn't, then the request is passed to
    # the front-end controller. This consistent behaviour means that we don't need
    # to specify custom rules for certain paths (e.g. images and other assets,
    # `/updater`, `/ocs-provider`), and thus
    # `try_files $uri $uri/ /index.php$request_uri`
    # always provides the desired behaviour.
    index index.php index.html /index.php$request_uri;

    # Rule borrowed from `.htaccess` to handle Microsoft DAV clients
    location = / {
        if ( $http_user_agent ~ ^DavClnt ) {
            return 302 /remote.php/webdav/$is_args$args;
        }
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    # Make a regex exception for `/.well-known` so that clients can still
    # access it despite the existence of the regex rule
    # `location ~ /(\.|autotest|...)` which would otherwise handle requests
    # for `/.well-known`.
    location ^~ /.well-known {
        # The rules in this block are an adaptation of the rules
        # in `.htaccess` that concern `/.well-known`.

        location = /.well-known/carddav { return 301 /remote.php/dav/; }
        location = /.well-known/caldav { return 301 /remote.php/dav/; }

        location /.well-known/acme-challenge { try_files $uri $uri/ =404; }
        location /.well-known/pki-validation { try_files $uri $uri/ =404; }

        # Let Nextcloud's API for `/.well-known` URIs handle all other
        # requests by passing them to the front-end controller.
        return 301 /index.php$request_uri;
    }

    # Rules borrowed from `.htaccess` to hide certain paths from clients
    location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) { return 404; }
    location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) { return 404; }

    # Ensure this block, which passes PHP files to the PHP process, is above the blocks
    # which handle static assets (as seen below). If this block is not declared first,
    # then Nginx will encounter an infinite rewriting loop when it prepends `/index.php`
    # to the URI, resulting in a HTTP 500 error response.
    location ~ \.php(?:$|/) {
        # Required for legacy support
        rewrite ^/(?!index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|ocs-provider\/.+|.+\/richdocumentscode\/proxy) /index.php$request_uri;

        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
        set $path_info $fastcgi_path_info;

        try_files $fastcgi_script_name =404;

        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $path_info;
        fastcgi_param HTTPS on;

        fastcgi_param modHeadersAvailable true; # Avoid sending the security headers twice
        fastcgi_param front_controller_active true; # Enable pretty urls
        fastcgi_pass php-handler;

        fastcgi_intercept_errors on;
        fastcgi_request_buffering off;

        fastcgi_max_temp_file_size 0;
    }

    # Serve static files
    location ~ \.(?:css|js|mjs|svg|gif|png|jpg|ico|wasm|tflite|map|ogg|flac)$ {
        try_files $uri /index.php$request_uri;
        add_header Cache-Control "public, max-age=15778463, $asset_immutable";
        access_log off; # Optional: Don't log access to assets

        location ~ \.wasm$ {
            default_type application/wasm;
        }
    }

    location ~ \.woff2?$ {
        try_files $uri /index.php$request_uri;
        expires 7d; # Cache-Control policy borrowed from `.htaccess`
        access_log off; # Optional: Don't log access to assets
    }

    # Rule borrowed from `.htaccess`
    location /remote {
        return 301 /remote.php$request_uri;
    }

    location / {
        try_files $uri $uri/ /index.php$request_uri;
    }
}

```

(with [cloud.mydomain.fr](http://cloud.mydomain.fr) as my nextcloud public address)

And this is my nginx config for collabora online:

```auto
server {
    listen 80;
    server_name office.mydomain.fr;

    #Redirige toutes les requêtes http vers https
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    server_name office.mydomain.fr;

    ssl_certificate /etc/letsencrypt/live/office.mydomain.fr/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/office.mydomain.fr/privkey.pem;

    # static files
    location ^~ /browser {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Host $host;
    }

    # WOPI discovery URL
    location ^~ /hosting/discovery {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Host $host;
    }

    # Capabilities
    location ^~ /hosting/capabilities {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Host $host;
    }

    # main websocket
    location ~ ^/cool/(.*)/ws$ {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 36000s;
    }

    # download, presentation and image upload
    location ~ ^/(c|l)ool {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Host $host;
    }

    # Admin Console websocket
    location ^~ /cool/adminws {
        proxy_pass https://24.24.12.15:9980;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "Upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 36000s;
    }

}

```

(with 24.24.12.15 is my server public IP and [office.mydomain.fr](http://office.mydomain.fr) code public url).

I tried also with 127.0.0.1 like in doc for IP, same error.

For information, with apache, this config worked for collabora online:

```auto
<IfModule mod_ssl.c>
<VirtualHost *:443>
        ServerName office.mydomain.fr
        Options -Indexes

AllowEncodedSlashes NoDecode
 SSLProxyEngine On
 ProxyPreserveHost On

 # static html, js, images, etc. served from coolwsd
 # browser is the client part of Collabora Online
 ProxyPass /browser https://24.24.12.15:9980/browser retry=0
 ProxyPassReverse /browser https://24.24.12.15:9980/browser

 # WOPI discovery URL
 ProxyPass /hosting/discovery https://24.24.12.15:9980/hosting/discovery retry=0
 ProxyPassReverse /hosting/discovery https://24.24.12.15:9980/hosting/discovery

 # Capabilities
 ProxyPass /hosting/capabilities https://24.24.12.15:9980/hosting/capabilities retry=0
 ProxyPassReverse /hosting/capabilities https://24.24.12.15:9980/hosting/capabilities

 # Main websocket
 ProxyPassMatch "/cool/(.*)/ws$" wss://24.24.12.15:9980/cool/$1/ws nocanon

 # Admin Console websocket
 ProxyPass /cool/adminws wss://24.24.12.15:9980/cool/adminws

 # Download as, Fullscreen presentation and Image upload operations
 ProxyPass /cool https://24.24.12.15:9980/cool
 ProxyPassReverse /cool https://24.24.12.15:9980/cool
 # Compatibility with integrations that use the /lool/convert-to endpoint
 ProxyPass /lool https://24.24.12.15:9980/cool
 ProxyPassReverse /lool https://24.24.12.15:9980/cool

SSLCertificateFile /etc/letsencrypt/live/office.mydomain.fr/fullchain.pem
SSLCertificateKeyFile /etc/letsencrypt/live/office.mydomain.fr/privkey.pem
Include /etc/letsencrypt/options-ssl-apache.conf
</VirtualHost>
</IfModule>

```

With nginx, when I try to open a document, I have this logs for coolwsd service:

```auto
anv. 07 19:57:29 srv coolwsd[14758]: kit-14758-13748 2024-01-07 19:57:29.156354 +0100 [kit_spare_004] WRN chmod("/opt/cool/child-roots/13732-8c285983/evEkRPaqF6oSIPDJ/lo/") failed: Read-only file system| common/JailUtil.cpp:282
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.162602 +0100 [docbroker_003] ERR WOPI::CheckFileInfo failed for URI [https://cloud.mydomain.fr/index.php/apps/richdocuments/wopi/files/14516_ocdxk959hxs7?access_token=yfZNuqv17VzPpHtKxNFnx5W2UHJkKAuM&access_token_ttl=0]: 0 (Unknown) . Headers: Body: []| wsd/Storage.cpp:712
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.162675 +0100 [docbroker_003] ERR loading document exception: WOPI::CheckFileInfo failed: | wsd/DocumentBroker.cpp:2640
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.162697 +0100 [docbroker_003] ERR Failed to add session to [https%3A%2F%2Fcloud.mydomain.fr%3A443%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F14516_ocdxk959hxs7] with URI [https://cloud.mydomain.fr/index.php/apps/richdocuments/wopi/files/14516_ocdxk959hxs7?access_token=yfZNuqv17VzPpHtKxNFnx5W2UHJkKAuM&access_token_ttl=0]: WOPI::CheckFileInfo failed: | wsd/DocumentBroker.cpp:2602
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.162718 +0100 [docbroker_003] ERR Storage error while starting session on https%3A%2F%2Fcloud.mydomain.fr%3A443%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F14516_ocdxk959hxs7 for socket #24. Terminating connection. Error: WOPI::CheckFileInfo failed: | wsd/COOLWSD.cpp:5343
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.166127 +0100 [docbroker_003] ERR #18: Read failed, have 0 buffered bytes (ECONNRESET: Connection reset by peer)| net/Socket.hpp:1139
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.166175 +0100 [docbroker_003] WRN #18: Unassociated Kit (14102) disconnected unexpectedly| wsd/COOLWSD.cpp:3776
janv. 07 19:57:29 srv coolwsd[14776]: kit-14776-13748 2024-01-07 19:57:29.302041 +0100 [kit_spare_005] WRN chmod("/opt/cool/child-roots/13732-8c285983/JWklR77eEFl7hr0p/lo/") failed: Read-only file system| common/JailUtil.cpp:282
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.305030 +0100 [docbroker_004] ERR WOPI::CheckFileInfo failed for URI [https://cloud.mydomain.fr/index.php/apps/richdocuments/wopi/files/14516_ocdxk959hxs7?access_token=yfZNuqv17VzPpHtKxNFnx5W2UHJkKAuM&access_token_ttl=0&permission=edit]: 0 (Unknown) . Headers: Body: []| wsd/Storage.cpp:712
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.305100 +0100 [docbroker_004] ERR loading document exception: WOPI::CheckFileInfo failed: | wsd/DocumentBroker.cpp:2640
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.305123 +0100 [docbroker_004] ERR Failed to add session to [https%3A%2F%2Fcloud.mydomain.fr%3A443%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F14516_ocdxk959hxs7] with URI [https://cloud.mydomain.fr/index.php/apps/richdocuments/wopi/files/14516_ocdxk959hxs7?access_token=yfZNuqv17VzPpHtKxNFnx5W2UHJkKAuM&access_token_ttl=0&permission=edit]: WOPI::CheckFileInfo failed: | wsd/DocumentBroker.cpp:2602
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.305144 +0100 [docbroker_004] ERR Storage error while starting session on https%3A%2F%2Fcloud.mydomain.fr%3A443%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F14516_ocdxk959hxs7 for socket #24. Terminating connection. Error: WOPI::CheckFileInfo failed: | wsd/COOLWSD.cpp:5343
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.308728 +0100 [docbroker_004] ERR #18: Read failed, have 0 buffered bytes (ECONNRESET: Connection reset by peer)| net/Socket.hpp:1139
janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14769 2024-01-07 19:57:29.308771 +0100 [docbroker_004] WRN #18: Unassociated Kit (14758) disconnected unexpectedly| wsd/COOLWSD.cpp:3776

```

With apache, only this appear (and it work):

```auto
janv. 07 21:19:08 srv coolwsd[28509]: kit-28509-13748 2024-01-07 21:19:08.113014 +0100 [kit_spare_008] WRN chmod("/opt/cool/child-roots/13732-8c285983/J4plBo05wZlZrbfX/lo/") failed: Read-only file system| common/JailUtil.cpp:282
janv. 07 21:19:09 srv coolwsd[27878]: kit-27878-13748 2024-01-07 21:19:09.041266 +0100 [kitbroker_007] ERR Session is not found. Maybe exited after rendering request.| kit/Kit.cpp:890
janv. 07 21:19:09 srv coolwsd[27878]: kit-27878-13748 2024-01-07 21:19:09.041300 +0100 [kitbroker_007] ERR Session is not found. Maybe exited after rendering request.| kit/Kit.cpp:890
janv. 07 21:19:09 srv coolwsd[13732]: wsd-13732-13762 2024-01-07 21:19:09.064734 +0100 [websrv_poll] ERR FileServerRequestHandler: File not found: Invalid URI request: [/browser/84551c8/images/dark/lc_exportdirectpdf.svg].| wsd/FileServer.cpp:713

```

Could you help me to find what is the problem with nginx please?

Thank you in advance for the time you give me…

Floreal

---

<div class="post-metadata">

**Author:** ![floreal](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/floreal/32/994_2.png) [@floreal](https://forum.collaboraonline.com/u/floreal)\
**Post date:** [January 20, 2024, 9:35am UTC](https://forum.collaboraonline.com/t/unable-to-use-collabora-online-from-nextcloud-with-nginx/2296/2 "2024-01-20T09:35:44Z")

</div>

Nobody to help me please?

---

<div class="post-metadata">

**Author:** ![mmeeks](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.collaboraonline.com/mmeeks/32/371_2.png) [@mmeeks](https://forum.collaboraonline.com/u/mmeeks)\
**Post date:** [January 20, 2024, 12:00pm UTC](https://forum.collaboraonline.com/t/unable-to-use-collabora-online-from-nextcloud-with-nginx/2296/3 "2024-01-20T12:00:59Z")

</div>

> [@floreal](#):
>
> ```auto
> janv. 07 19:57:29 srv coolwsd[13732]: wsd-13732-14757 2024-01-07 19:57:29.162602 +0100 [docbroker_003] ERR WOPI::CheckFileInfo failed for URI [https://cloud.mydomain.fr/index.php/apps/richdocuments/wopi/files/14516_ocdxk959hxs7?access_token=yfZNuqv17VzPpHtKxNFnx5W2UHJkKAuM&access_token_ttl=0]: 0 (Unknown) . Headers: Body: []| wsd/Storage.cpp:712
> 
> ```

Sorry about that; it looks like the WOPI URL that is given to coolwsd cannot be resolved from coolwsd’s perspective. I assume that you can access the URL above with a CURL command and get some details back from the WOPI server(?)

If so, then it is interesting to work out why coolwsd cannot; very curious. I would dig down that path - why would coolwsd be able to access it under NGINX but not Apache - but best to start on the command-line. Ultimately coolwsd expects to get a URL for a WOPISRC that it can resolve =)

HTH.