WebSocket SSL Checker

Check if a server supports WebSocket Secure (WSS) connections

About WebSocket Secure (WSS)

WebSocket is a protocol that enables full-duplex, bidirectional communication between a client and server over a single TCP connection. WebSocket Secure (WSS) tunnels WebSocket traffic over TLS/SSL, providing encryption and authentication. WSS is essential for real-time web applications — including live chat, gaming, financial tickers, and collaborative tools — where data must be transmitted securely and with low latency. Our WebSocket SSL Checker tests whether a server accepts WSS upgrade requests and establishes encrypted WebSocket connections.

How to Use

Enter the domain name of the WebSocket server.
Optionally specify a WebSocket path (default is /).
Click Test WSS to attempt a secure WebSocket connection.
Review the result to see if the server supports WSS and any additional details.

Use Cases

Deployment Verification: Confirm that your WebSocket server is properly configured to accept WSS connections before launching your application.
Real-Time App Testing: Test WebSocket Secure support for live chat, collaborative editing, and real-time data streaming applications.
Security Assessment: Verify that WebSocket connections use encryption and cannot be downgraded to unencrypted WS.
Third-Party Validation: Check that third-party WebSocket services you integrate with properly support WSS encryption.

Frequently Asked Questions

WS (WebSocket) uses unencrypted connections (ws://), while WSS (WebSocket Secure) tunnels WebSocket traffic over TLS/SSL (wss://). WSS is the standard for production applications as it encrypts all data in transit, similar to the difference between HTTP and HTTPS.

Yes, WSS should always be used for production applications. Modern browsers also restrict unencrypted WebSocket connections from secure (HTTPS) pages, making WSS a requirement for most real-world deployments. WSS protects against eavesdropping and man-in-the-middle attacks.

WSS typically uses port 443, the same as HTTPS. WebSocket servers can run on any port, but using port 443 ensures compatibility with most firewalls and network policies. Our checker tests on port 443 by default.

Tips & Best Practices

•Ensure WebSocket connections use TLS for secure communication
•Configure proper timeout settings for WebSocket connections
•Monitor WebSocket connections for unusual traffic patterns
•Use WSS (WebSocket Secure) for all production deployments

Technical Details

Protocol: WebSocket Secure (WSS) over TLS support detection
Upgrade: HTTP to WebSocket upgrade mechanism
Security: TLS version and cipher suite requirements
Output: WebSocket support status with configuration recommendations