The document could not be saved. Error: "Please check connection settings or contact your administrator".

[hydrococcous]

Issue Description

I am encountering an issue while running OnlyOffice in my local testing environment using Docker. Whenever I try to save a document, I consistently receive the following error message:

Steps to Reproduce

1. Install OnlyOffice Document Server using Docker.
2. Set up the Angular front-end with the @onlyoffice/document-editor-angular package.
3. Use the following callbackUrl configuration (adapted for local network):
   callbackUrl: "http://192.168.178.72:8082/files/save/callback.js"
4. Attempt to save the document.

Expected Behavior

The document should save successfully using the local server and the specified callback URL.

Observed Behavior

The save operation fails, and the error message appears:
"The document could not be saved. Please check connection settings or contact your administrator."

Environment

• OnlyOffice Document Server: Running in Docker locally.
• Callback Server: Express.js server to handle callbacks.
• Frontend: Angular application using the @onlyoffice/document-editor-angular package.
• Local IP: 192.168.178.31.

Relevant Configuration

Configuration used in the Angular component:

config: IConfig = { document: { "fileType": "docx", "key": "123456789abcdefghijkl", "title": "test.docx", "url": "https://domain.com/sample.docx", permissions: { edit: true } }, editorConfig: { lang: "en", mode: "edit", callbackUrl: "http://192.168.178.72:8082/files/save/callback.js", user: { name: "Editor Name", id: "userid-001" } } }

[hydrococcous]

[hydrococcous]

Version: ubuntu/onlyoffice-documentserver 8.3.1-25

[nicolalandro]

I have the same issue with container (I am on linux with podman, but it do the same with docker):

• run the server podman run --rm -i -t -p 8000:80 -e JWT_SECRET=my_jwt_secret onlyoffice/documentserver
• `podman exec XXXX sudo supervisorctl start ds:example
• podman exec 8b0860b9f448 sudo sed 's,autostart=false,autostart=true,' -i /etc/supervisor/conf.d/ds-example.conf
• go on localhost:8000 and press go to text example, then create a new document
  
• Logs

==> /var/log/onlyoffice/documentserver/docservice/out.log <==
[2025-05-02T21:21:57.630] [ERROR] [localhost] [192.168.1.211new.docx1746220805863] [uid-11] nodeJS - postData error: url = http://localhost:8000/example/track?filename=new.docx&useraddress=192.168.1.211;data = {"key":"192.168.1.211new.docx1746220805863","status":4,"actions":[{"type":0,"userid":"uid-1"}]} Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)
[2025-05-02T21:22:00.909] [ERROR] [localhost] [192.168.1.211new__1_.docx1746220920273] [uid-1] nodeJS - postData error: url = http://localhost:8000/example/track?filename=new%20(1).docx&useraddress=192.168.1.211;data = {"key":"192.168.1.211new__1_.docx1746220920273","status":1,"users":["uid-1"],"actions":[{"type":1,"userid":"uid-1"}]} Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)

==> /var/log/onlyoffice/documentserver/converter/out.log <==
[2025-05-02T21:22:00.927] [ERROR] [localhost] [192.168.1.211new__1_.docx1746220920273] [uid-1] nodeJS - error downloadFile:url=http://localhost:8000/example/download?fileName=new%20(1).docx&useraddress=192.168.1.211;attempt=1;code:null;connect:null Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)
[2025-05-02T21:22:01.933] [ERROR] [localhost] [192.168.1.211new__1_.docx1746220920273] [uid-1] nodeJS - error downloadFile:url=http://localhost:8000/example/download?fileName=new%20(1).docx&useraddress=192.168.1.211;attempt=2;code:null;connect:null Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)
[2025-05-02T21:22:02.939] [ERROR] [localhost] [192.168.1.211new__1_.docx1746220920273] [uid-1] nodeJS - error downloadFile:url=http://localhost:8000/example/download?fileName=new%20(1).docx&useraddress=192.168.1.211;attempt=3;code:null;connect:null Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)

==> /var/log/onlyoffice/documentserver/docservice/out.log <==
[2025-05-02T21:22:14.163] [ERROR] [localhost] [192.168.1.211new__1_.docx1746220920273] [uid-11] nodeJS - postData error: url = http://localhost:8000/example/track?filename=new%20(1).docx&useraddress=192.168.1.211;data = {"key":"192.168.1.211new__1_.docx1746220920273","status":4,"actions":[{"type":0,"userid":"uid-1"}]} Error: DNS lookup 127.0.0.1(family:4, host:localhost) is not allowed. Because, It is private IP address.
    at validateIPAddress (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:71:20)
    at Socket.<anonymous> (/snapshot/server/Common/node_modules/request-filtering-agent/lib/request-filtering-agent.js:88:21)
    at Socket.emit (node:events:527:28)
    at emitLookup (node:net:1075:12)
    at /snapshot/server/Common/node_modules/dnscache/lib/index.js:80:28
    at /snapshot/server/Common/node_modules/dnscache/lib/cache.js:116:13
    at RawTask.call (/snapshot/server/Common/node_modules/asap/asap.js:40:19)
    at flush (/snapshot/server/Common/node_modules/asap/raw.js:50:29)
    at processTicksAndRejections (node:internal/process/task_queues:78:11)

[raikusy]

Same issue! anyone able to solve?

[matteo-costa]

Hi, I was able to work around this by using the machine IP (192.168.X.Y) instead of localhost in the url. It seems to be needed only if the port chosen is not the default (80). This could help you @nicolalandro but it seems to have already been tried by the original poster

[igwyd]

@nicolalandro error with localhost because docker inside the container resolves to the localhost container's IP address, you should use IP address instead of localhost. About is not allowed. Because, It is private IP address - this is for security, you need use JWT in local network or disable private ip check (only for test environment) here:

      "request-filtering-agent": {
        "allowPrivateIPAddress": true,
        "allowMetaIPAddress": true
      },

@avdddd1111 please check Angular test example when you have free time.