[GH-ISSUE #4493] Websocket connections not working with recommended apache2 proxy configuration #1898

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opened 2026-03-03 02:13:13 +03:00 by kerem · 0 comments

kerem commented

2026-03-03 02:13:13 +03:00

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Originally created by @SoraMakes on GitHub (Apr 11, 2024).
Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/4493

Subject of the issue

When deploying vaultwarden as docker container and using apache2 as reverseproxy with the configuration recommended here i get NS_ERROR_WEBSOCKET_CONNECTION_REFUSED on Firefox. It works fine when accessing it via ssh proxy and then using http://localhost:50854.

Deployment environment

Your environment (Generated via diagnostics page)

Vaultwarden version: v1.30.5
Web-vault version: v2024.1.2b
OS/Arch: linux/x86_64
Running within a container: true (Base: Debian)
Environment settings overridden: false
Uses a reverse proxy: true
IP Header check: true (X-Real-IP)
Internet access: true
Internet access via a proxy: false
DNS Check: true
Browser/Server Time Check: true
Server/NTP Time Check: true
Domain Configuration Check: true
HTTPS Check: true
Database type: SQLite
Database version: 3.44.0
Clients used:
Reverse proxy and version:
Other relevant information:

Config (Generated via diagnostics page)

Show Running Config

Environment settings which are overridden:

{
  "_duo_akey": null,
  "_enable_duo": true,
  "_enable_email_2fa": true,
  "_enable_smtp": true,
  "_enable_yubico": true,
  "_icon_service_csp": "",
  "_icon_service_url": "",
  "_ip_header_enabled": true,
  "_smtp_img_src": "cid:",
  "admin_ratelimit_max_burst": 3,
  "admin_ratelimit_seconds": 300,
  "admin_session_lifetime": 20,
  "admin_token": "***",
  "allowed_iframe_ancestors": "",
  "attachments_folder": "data/attachments",
  "auth_request_purge_schedule": "30 * * * * *",
  "authenticator_disable_time_drift": false,
  "data_folder": "data",
  "database_conn_init": "",
  "database_max_conns": 10,
  "database_timeout": 30,
  "database_url": "***************",
  "db_connection_retries": 15,
  "disable_2fa_remember": false,
  "disable_admin_token": false,
  "disable_icon_download": false,
  "domain": "*****://************************************",
  "domain_origin": "*****://************************************",
  "domain_path": "",
  "domain_set": true,
  "duo_host": null,
  "duo_ikey": null,
  "duo_skey": null,
  "email_attempts_limit": 3,
  "email_change_allowed": true,
  "email_expiration_time": 600,
  "email_token_size": 6,
  "emergency_access_allowed": true,
  "emergency_notification_reminder_schedule": "0 3 * * * *",
  "emergency_request_timeout_schedule": "0 7 * * * *",
  "enable_db_wal": true,
  "event_cleanup_schedule": "0 10 0 * * *",
  "events_days_retain": null,
  "experimental_client_feature_flags": "fido2-vault-credentials",
  "extended_logging": true,
  "helo_name": null,
  "hibp_api_key": null,
  "icon_blacklist_non_global_ips": true,
  "icon_blacklist_regex": null,
  "icon_cache_folder": "data/icon_cache",
  "icon_cache_negttl": 259200,
  "icon_cache_ttl": 2592000,
  "icon_download_timeout": 10,
  "icon_redirect_code": 302,
  "icon_service": "internal",
  "incomplete_2fa_schedule": "30 * * * * *",
  "incomplete_2fa_time_limit": 3,
  "invitation_expiration_hours": 120,
  "invitation_org_name": "Vaultwarden",
  "invitations_allowed": true,
  "ip_header": "X-Real-IP",
  "job_poll_interval_ms": 30000,
  "log_file": null,
  "log_level": "DEBUG",
  "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f",
  "login_ratelimit_max_burst": 10,
  "login_ratelimit_seconds": 60,
  "org_attachment_limit": null,
  "org_creation_users": "",
  "org_events_enabled": false,
  "org_groups_enabled": true,
  "password_hints_allowed": true,
  "password_iterations": 600000,
  "push_enabled": false,
  "push_identity_uri": "https://identity.bitwarden.com",
  "push_installation_id": "***",
  "push_installation_key": "***",
  "push_relay_uri": "https://push.bitwarden.com",
  "reload_templates": false,
  "require_device_email": false,
  "rsa_key_filename": "data/rsa_key",
  "send_purge_schedule": "0 5 * * * *",
  "sendmail_command": null,
  "sends_allowed": true,
  "sends_folder": "data/sends",
  "show_password_hint": false,
  "signups_allowed": false,
  "signups_domains_whitelist": "***********,*************",
  "signups_verify": false,
  "signups_verify_resend_limit": 6,
  "signups_verify_resend_time": 3600,
  "smtp_accept_invalid_certs": false,
  "smtp_accept_invalid_hostnames": false,
  "smtp_auth_mechanism": null,
  "smtp_debug": false,
  "smtp_embed_images": true,
  "smtp_explicit_tls": null,
  "smtp_from": "********************",
  "smtp_from_name": "\"wikimove Vaultwarden\"",
  "smtp_host": "**************************",
  "smtp_password": "***",
  "smtp_port": 587,
  "smtp_security": "starttls",
  "smtp_ssl": null,
  "smtp_timeout": 15,
  "smtp_username": "********************",
  "templates_folder": "data/templates",
  "tmp_folder": "data/tmp",
  "trash_auto_delete_days": null,
  "trash_purge_schedule": "0 5 0 * * *",
  "use_sendmail": false,
  "use_syslog": false,
  "user_attachment_limit": null,
  "user_send_limit": null,
  "web_vault_enabled": true,
  "web_vault_folder": "web-vault/",
  "websocket_address": "0.0.0.0",
  "websocket_enabled": false,
  "websocket_port": 3012,
  "yubico_client_id": null,
  "yubico_secret_key": null,
  "yubico_server": null
}

Install method: docker compose


services:
  vaultwarden:
    image: vaultwarden/server:latest
    container_name: vaultwarden
    environment:
      - LOG_LEVEL=DEBUG
      - DOMAIN=<some domain>
      - SIGNUPS_ALLOWED=false
      - SIGNUPS_DOMAINS_WHITELIST=<some domains>
      - ADMIN_TOKEN=$ADMIN_TOKEN
      - ORG_GROUPS_ENABLED=true
      - SMTP_HOST=<some domain>
      - SMTP_PORT=587
      - SMTP_SECURITY=starttls
      - SMTP_FROM=no-reply@<some domain>
      - SMTP_FROM_NAME="Vaultwarden"
      - SMTP_USERNAME=no-reply@<some domain>
      - SMTP_PASSWORD=$SMTP_PASSWORD
# doc: https://github.com/dani-garcia/vaultwarden/blob/main/.env.template
    volumes:
      - vw-data:/data
    ports:
      - "127.0.0.1:50584:80"
    restart: unless-stopped

volumes:
  vw-data:

Clients used: web vault (Firefox)
Reverse proxy and version: apache2 (2.4.38-3+deb10u10)
the proxy modules ( proxy_module (shared), proxy_http_module (shared), proxy_wstunnel_module (shared)) are loaded

<VirtualHost *:80>
        ServerName passwords.<some domain>

        <ifmodule mod_rewrite.c>
                RewriteEngine On
                RewriteCond %{REQUEST_URI} !^/\.well\-known/acme\-challenge/
                RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]
        </ifmodule>

        ErrorLog /var/log/apache2/vaultwarden_error.log
        CustomLog /var/log/apache2/vaultwarden_access.log common
</VirtualHost>
<VirtualHost *:443>
        ServerName passwords.<some domain>

        ProxyRequests Off
        ProxyPreserveHost On
        RequestHeader set X-Real-IP %{REMOTE_ADDR}s


        ProxyPass / http://localhost:50584/ upgrade=websocket
#        ProxyPassReverse / http://passwords.<some domain>/

        SSLEngine on
        SSLCertificateFile /etc/letsencrypt/live/passwords.<some domain>/cert.pem
        SSLCertificateKeyFile /etc/letsencrypt/live/passwords.<some domain>/privkey.pem
        SSLCertificateChainFile /etc/letsencrypt/live/passwords.<some domain>/chain.pem


        ErrorLog /var/log/apache2/vaultwarden_error.log
        CustomLog /var/log/apache2/vaultwarden_access.log common
</VirtualHost>

MySQL/MariaDB or PostgreSQL version: sqlite
Other relevant details:

Steps to reproduce

deploy vaultwarden as described
open web app and have a look on the network requests

Expected behaviour

Getting 101 as response on the wss:// requests

Actual behaviour

Getting 404 as response on the wss:// requests

Troubleshooting data

relevant vaultwarden log:

vaultwarden  | [2024-04-11 14:13:18.074][request][INFO] GET /notifications/hub?access_token=eyJ0eXAiOiJKV1QiL
vaultwarden  | [2024-04-11 14:13:18.074][vaultwarden::api::notifications::_][WARN] Request guard `rocket_ws :: WebSocket` is forwarding.
vaultwarden  | [2024-04-11 14:13:18.074][rocket::response::responder::_][WARN] Response was `None`.
vaultwarden  | [2024-04-11 14:13:18.074][rocket::server::_][WARN] Responding with registered (not_found) 404 catcher.
vaultwarden  | [2024-04-11 14:13:18.074][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found

relevant apache2 log

<ip> - - [11/Apr/2024:13:51:47 +0000] "GET /notifications/hub?access_token=<token> HTTP/1.1" 404 3783

Workaround

As a workaround i added the following lines to my apache VirtualHost conf

# WebSocket proxying
RewriteEngine On
RewriteCond %{HTTP:Upgrade} =websocket [NC]
RewriteRule /notifications/hub(.*) ws://localhost:50584/notifications/hub$1 [P,L]

Originally created by @SoraMakes on GitHub (Apr 11, 2024). Original GitHub issue: https://github.com/dani-garcia/vaultwarden/issues/4493 ### Subject of the issue When deploying vaultwarden as docker container and using apache2 as reverseproxy with the configuration recommended [here](https://github.com/dani-garcia/vaultwarden/wiki/Proxy-examples) i get NS_ERROR_WEBSOCKET_CONNECTION_REFUSED on Firefox. It works fine when accessing it via ssh proxy and then using `http://localhost:50854`. ### Deployment environment ### Your environment (Generated via diagnostics page) * Vaultwarden version: v1.30.5 * Web-vault version: v2024.1.2b * OS/Arch: linux/x86_64 * Running within a container: true (Base: Debian) * Environment settings overridden: false * Uses a reverse proxy: true * IP Header check: true (X-Real-IP) * Internet access: true * Internet access via a proxy: false * DNS Check: true * Browser/Server Time Check: true * Server/NTP Time Check: true * Domain Configuration Check: true * HTTPS Check: true * Database type: SQLite * Database version: 3.44.0 * Clients used: * Reverse proxy and version: * Other relevant information: ### Config (Generated via diagnostics page) <details><summary>Show Running Config</summary> **Environment settings which are overridden:** ```json { "_duo_akey": null, "_enable_duo": true, "_enable_email_2fa": true, "_enable_smtp": true, "_enable_yubico": true, "_icon_service_csp": "", "_icon_service_url": "", "_ip_header_enabled": true, "_smtp_img_src": "cid:", "admin_ratelimit_max_burst": 3, "admin_ratelimit_seconds": 300, "admin_session_lifetime": 20, "admin_token": "***", "allowed_iframe_ancestors": "", "attachments_folder": "data/attachments", "auth_request_purge_schedule": "30 * * * * *", "authenticator_disable_time_drift": false, "data_folder": "data", "database_conn_init": "", "database_max_conns": 10, "database_timeout": 30, "database_url": "***************", "db_connection_retries": 15, "disable_2fa_remember": false, "disable_admin_token": false, "disable_icon_download": false, "domain": "*****://************************************", "domain_origin": "*****://************************************", "domain_path": "", "domain_set": true, "duo_host": null, "duo_ikey": null, "duo_skey": null, "email_attempts_limit": 3, "email_change_allowed": true, "email_expiration_time": 600, "email_token_size": 6, "emergency_access_allowed": true, "emergency_notification_reminder_schedule": "0 3 * * * *", "emergency_request_timeout_schedule": "0 7 * * * *", "enable_db_wal": true, "event_cleanup_schedule": "0 10 0 * * *", "events_days_retain": null, "experimental_client_feature_flags": "fido2-vault-credentials", "extended_logging": true, "helo_name": null, "hibp_api_key": null, "icon_blacklist_non_global_ips": true, "icon_blacklist_regex": null, "icon_cache_folder": "data/icon_cache", "icon_cache_negttl": 259200, "icon_cache_ttl": 2592000, "icon_download_timeout": 10, "icon_redirect_code": 302, "icon_service": "internal", "incomplete_2fa_schedule": "30 * * * * *", "incomplete_2fa_time_limit": 3, "invitation_expiration_hours": 120, "invitation_org_name": "Vaultwarden", "invitations_allowed": true, "ip_header": "X-Real-IP", "job_poll_interval_ms": 30000, "log_file": null, "log_level": "DEBUG", "log_timestamp_format": "%Y-%m-%d %H:%M:%S.%3f", "login_ratelimit_max_burst": 10, "login_ratelimit_seconds": 60, "org_attachment_limit": null, "org_creation_users": "", "org_events_enabled": false, "org_groups_enabled": true, "password_hints_allowed": true, "password_iterations": 600000, "push_enabled": false, "push_identity_uri": "https://identity.bitwarden.com", "push_installation_id": "***", "push_installation_key": "***", "push_relay_uri": "https://push.bitwarden.com", "reload_templates": false, "require_device_email": false, "rsa_key_filename": "data/rsa_key", "send_purge_schedule": "0 5 * * * *", "sendmail_command": null, "sends_allowed": true, "sends_folder": "data/sends", "show_password_hint": false, "signups_allowed": false, "signups_domains_whitelist": "***********,*************", "signups_verify": false, "signups_verify_resend_limit": 6, "signups_verify_resend_time": 3600, "smtp_accept_invalid_certs": false, "smtp_accept_invalid_hostnames": false, "smtp_auth_mechanism": null, "smtp_debug": false, "smtp_embed_images": true, "smtp_explicit_tls": null, "smtp_from": "********************", "smtp_from_name": "\"wikimove Vaultwarden\"", "smtp_host": "**************************", "smtp_password": "***", "smtp_port": 587, "smtp_security": "starttls", "smtp_ssl": null, "smtp_timeout": 15, "smtp_username": "********************", "templates_folder": "data/templates", "tmp_folder": "data/tmp", "trash_auto_delete_days": null, "trash_purge_schedule": "0 5 0 * * *", "use_sendmail": false, "use_syslog": false, "user_attachment_limit": null, "user_send_limit": null, "web_vault_enabled": true, "web_vault_folder": "web-vault/", "websocket_address": "0.0.0.0", "websocket_enabled": false, "websocket_port": 3012, "yubico_client_id": null, "yubico_secret_key": null, "yubico_server": null } ``` </details>  * Install method: docker compose ``` services: vaultwarden: image: vaultwarden/server:latest container_name: vaultwarden environment: - LOG_LEVEL=DEBUG - DOMAIN=<some domain> - SIGNUPS_ALLOWED=false - SIGNUPS_DOMAINS_WHITELIST=<some domains> - ADMIN_TOKEN=$ADMIN_TOKEN - ORG_GROUPS_ENABLED=true - SMTP_HOST=<some domain> - SMTP_PORT=587 - SMTP_SECURITY=starttls - SMTP_FROM=no-reply@<some domain> - SMTP_FROM_NAME="Vaultwarden" - SMTP_USERNAME=no-reply@<some domain> - SMTP_PASSWORD=$SMTP_PASSWORD # doc: https://github.com/dani-garcia/vaultwarden/blob/main/.env.template volumes: - vw-data:/data ports: - "127.0.0.1:50584:80" restart: unless-stopped volumes: vw-data: ``` * Clients used: web vault (Firefox) * Reverse proxy and version: apache2 (2.4.38-3+deb10u10) the proxy modules ( proxy_module (shared), proxy_http_module (shared), proxy_wstunnel_module (shared)) are loaded ``` <VirtualHost *:80> ServerName passwords.<some domain> <ifmodule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_URI} !^/\.well\-known/acme\-challenge/ RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] </ifmodule> ErrorLog /var/log/apache2/vaultwarden_error.log CustomLog /var/log/apache2/vaultwarden_access.log common </VirtualHost> <VirtualHost *:443> ServerName passwords.<some domain> ProxyRequests Off ProxyPreserveHost On RequestHeader set X-Real-IP %{REMOTE_ADDR}s ProxyPass / http://localhost:50584/ upgrade=websocket # ProxyPassReverse / http://passwords.<some domain>/ SSLEngine on SSLCertificateFile /etc/letsencrypt/live/passwords.<some domain>/cert.pem SSLCertificateKeyFile /etc/letsencrypt/live/passwords.<some domain>/privkey.pem SSLCertificateChainFile /etc/letsencrypt/live/passwords.<some domain>/chain.pem ErrorLog /var/log/apache2/vaultwarden_error.log CustomLog /var/log/apache2/vaultwarden_access.log common </VirtualHost> ``` * MySQL/MariaDB or PostgreSQL version: sqlite * Other relevant details: ### Steps to reproduce 1) deploy vaultwarden as described 2) open web app and have a look on the network requests ### Expected behaviour Getting 101 as response on the wss:// requests ### Actual behaviour Getting 404 as response on the wss:// requests ### Troubleshooting data relevant vaultwarden log: ``` vaultwarden | [2024-04-11 14:13:18.074][request][INFO] GET /notifications/hub?access_token=eyJ0eXAiOiJKV1QiL vaultwarden | [2024-04-11 14:13:18.074][vaultwarden::api::notifications::_][WARN] Request guard `rocket_ws :: WebSocket` is forwarding. vaultwarden | [2024-04-11 14:13:18.074][rocket::response::responder::_][WARN] Response was `None`. vaultwarden | [2024-04-11 14:13:18.074][rocket::server::_][WARN] Responding with registered (not_found) 404 catcher. vaultwarden | [2024-04-11 14:13:18.074][response][INFO] (web_files) GET /<p..> [10] => 404 Not Found ``` relevant apache2 log ``` <ip> - - [11/Apr/2024:13:51:47 +0000] "GET /notifications/hub?access_token=<token> HTTP/1.1" 404 3783 ``` ### Workaround As a workaround i added the following lines to my apache VirtualHost conf # WebSocket proxying RewriteEngine On RewriteCond %{HTTP:Upgrade} =websocket [NC] RewriteRule /notifications/hub(.*) ws://localhost:50584/notifications/hub$1 [P,L]