[Bug]: cannot upload large file to external S3 storage - timeout

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When uploading to S3 private managed server (I don't know the backend, if it is MinIO, etc.) and S3 public managed server (Scaleway, GCS), the upload is in success for small file (100MB) but not for large file (4GB).

The reason for S3 private server:

"Message":"An exception occurred while uploading parts to a multipart upload. 
The following parts had errors:
- Part 6: Error executing \"UploadPart\" on \"https://[REDACTED_BUCKET].[REDACTED_URL]/[REDACTED_LARGE_FILE]?partNumber=6&uploadId=2~apkQo4kby0aJF5GwEYLYtNiGoUdmdQ3\"; 
AWS HTTP error: cURL error 28: SSL connection timeout (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://[REDACTED_BUCKET].[REDACTED_URL]/[REDACTED_LARGE_FILE]?partNumber=6&uploadId=2~apkQo4kby0aJF5GwEYLYtNiGoUdmdQ3"

at "File":"/var/www/html/lib/private/Files/ObjectStore/S3ObjectTrait.php","Line":130 and previous exception:
"Previous":{"Exception":"Aws\\S3\\Exception\\S3MultipartUploadException"
For S3 public server GCS:

Error while uploading to S3 bucket

at "File":"/var/www/html/3rdparty/aws/aws-sdk-php/src/Multipart/AbstractUploadManager.php","Line":134

Steps to reproduce

1.Deploy Nextcloud
2.Enable External Storage
3.Connect to a bucket at Scaleway
4.Upload small file (100MB): it works
5.Upload large file (4GB): it fails at MOVE operation

Expected behavior

The large file upload works.

Nextcloud Server version

30

Operating system

None

PHP engine version

None

Web server

Nginx

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

{
    "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
            }
        ],
        "debug": true,
        "check_data_directory_permissions": false,
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "forwarded_for_headers": [
            "HTTP_X_FORWARDED_FOR"
        ],
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "password": "***REMOVED SENSITIVE VALUE***",
            "port": 6379
        },
        "upgrade.disable-web": true,
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "localhost",
            "my-nextcloud.nextcloud",
            "REDACTED_URL"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "30.0.6.2",
        "overwrite.cli.url": "http:\/\/localhost",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "skeletondirectory": "\/dev\/null",
        "ldapProviderFactory": "OCA\\User_LDAP\\LDAPProviderFactory"
    }
}

List of activated Apps

Enabled:
  - activity: 3.0.0
  - bruteforcesettings: 3.0.0
  - cloud_federation_api: 1.13.0
  - comments: 1.20.1
  - dav: 1.31.1
  - federatedfilesharing: 1.20.0
  - files: 2.2.0
  - files_downloadlimit: 3.0.0
  - files_external: 1.22.0
  - files_pdfviewer: 3.0.0
  - files_sharing: 1.22.0
  - files_trashbin: 1.20.1
  - logreader: 3.0.0
  - lookup_server_connector: 1.18.0
  - notifications: 3.0.0
  - oauth2: 1.18.1
  - password_policy: 2.0.0
  - provisioning_api: 1.20.0
  - serverinfo: 2.0.0
  - settings: 1.13.0
  - survey_client: 2.0.0
  - text: 4.1.0
  - theming: 2.6.0
  - twofactor_backupcodes: 1.19.0
  - updatenotification: 1.20.0
  - user_ldap: 1.21.0
  - user_status: 1.10.0
  - viewer: 3.0.0
  - workflowengine: 2.12.0
Disabled:
  - admin_audit: 1.20.0
  - app_api: 4.0.6 (installed 4.0.6)
  - circles: 30.0.0 (installed 30.0.0)
  - contactsinteraction: 1.11.0 (installed 1.11.0)
  - dashboard: 7.10.0 (installed 7.10.0)
  - encryption: 2.18.0
  - federation: 1.20.0 (installed 1.20.0)
  - files_antivirus: 5.6.1 (installed 5.6.1)
  - files_reminders: 1.3.0 (installed 1.3.0)
  - files_versions: 1.23.0 (installed 1.23.0)
  - firstrunwizard: 3.0.0 (installed 3.0.0)
  - nextcloud_announcements: 2.0.0 (installed 2.0.0)
  - photos: 3.0.2 (installed 3.0.2)
  - privacy: 2.0.0 (installed 2.0.0)
  - recommendations: 3.0.0 (installed 3.0.0)
  - related_resources: 1.5.0 (installed 1.5.0)
  - sharebymail: 1.20.0 (installed 1.20.0)
  - support: 2.0.0 (installed 2.0.0)
  - suspicious_login: 8.0.0
  - systemtags: 1.20.0 (installed 1.20.0)
  - twofactor_nextcloud_notification: 4.0.0
  - twofactor_totp: 12.0.0-dev
  - user_oidc: 7.1.0 (installed 7.1.0)
  - user_saml: 6.5.0 (installed 6.5.0)
  - weather_status: 1.10.0 (installed 1.10.0)
  - webhook_listeners: 1.1.0-dev (installed 1.1.0-dev)

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

Lots lots lots of logs, but I pasted the relevant lines above

Additional info

Nextcloud Helm 6.6.9
OpenShift 4.15

https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/big_file_upload_configuration.html => applied
Upload of large file (4GB) directly at Nextcloud volume, but not at S3 backend works.

Start with lib/private/Files/ObjectStore/S3ObjectTrait.php around line 130 and the AWS SDK path at 3rdparty/aws/aws-sdk-php/src/Multipart/AbstractUploadManager.php around line 134. Reproduce the difference between a 100MB and 4GB upload to external S3 storage, then compare it with the working upload to the local Nextcloud volume; done means the large external upload completes without the reported timeout.