WebSocket Monitoring for Real-Time Services

WS and WSS handshake verification, latency tracking, and instant alerts

Monitor your WebSocket endpoints with full handshake checks. Track connection latency, catch upgrade failures, and get alerted when your real-time services go down. Free on both tiers.

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Key Features

Everything you need to monitor your infrastructure effectively

WS & WSS Handshake Checks

Verify WebSocket connections by performing a full handshake. Detect failures in the HTTP upgrade, TLS negotiation, and protocol switch.

Connection Latency Tracking

Measure how long it takes to establish a WebSocket connection, broken down by DNS, TCP, TLS, and handshake phases.

SSL Certificate Monitoring

WSS endpoints get automatic SSL certificate validation, expiration alerts, and security checks included with every check.

Smart Failure Detection

Automatic 30-second re-checks on first failure. Alerts only fire after consecutive failures to eliminate false positives from transient issues.

European Monitoring

Test WebSocket connections from our European server to verify connectivity and catch issues fast.

Real-Time Alerts

Get notified instantly via email, SMS, Slack, Discord, or any webhook when your WebSocket endpoints fail.

Why Choose exit1.dev?

See how we stack up against the competition

Featureexit1.devOthers
Free WebSocket monitoringPaid only
WS and WSS supportWSS only
Full handshake verificationBasic HTTP check
Connection latency breakdown
SSL monitoring for WSSSeparate service
Sub-minute check intervals30-sec on Pro, 15-sec on Agency5+ minutes
Smart false-positive preventionBasic retry
Instant alerts (email, SMS, webhooks)Email only on free
No credit card requiredCard required

Technical Details

Built for developers, by developers

Architecture

WebSocket monitoring runs on the same infrastructure as all exit1.dev checks. Each check performs a complete WebSocket handshake including the HTTP upgrade request and 101 Switching Protocols response. For WSS endpoints, the TLS negotiation is timed separately. Results include full connection phase breakdown and SSL certificate analysis.

Performance

WebSocket handshake checks execute quickly with minimal overhead. The connection is closed immediately after successful handshake verification. Strict URL validation ensures only valid WebSocket URLs are accepted. Process-level timeouts prevent hung connections from affecting other checks.

API

WebSocket checks are fully supported through the exit1.dev REST API. Create, update, delete, and query WebSocket monitors programmatically. Access check history, connection times, and SSL data via API endpoints. HMAC authentication with rate limits of 1000 requests/hour per key.

Frequently Asked Questions

Everything you need to know about our monitoring

WebSocket monitoring tests your WS and WSS endpoints by performing a full WebSocket handshake — the HTTP upgrade request followed by the protocol switch to WebSocket. If the handshake completes successfully, the endpoint is up. If it fails or times out, you get alerted. This catches issues that regular HTTP checks would miss.

Yes, WebSocket monitoring is available on every plan. Free: 10 monitors, 5-minute checks. Nano ($9/mo): 50 monitors, 2-minute checks. Pro ($24/mo): 500 monitors, 30-second checks. Agency ($49/mo): 1,000 monitors, 15-second checks.

WS (ws://) is unencrypted WebSocket, while WSS (wss://) is WebSocket Secure which runs over TLS, similar to HTTPS. For production services you should always use WSS. Exit1.dev supports both protocols and automatically monitors SSL certificates for WSS endpoints.

WebSocket checks verify the connection handshake only. They confirm that the server accepts WebSocket connections and the upgrade completes successfully. They do not send or validate application-level messages after the connection is established. For message-level validation, pair WebSocket checks with application health endpoints.

HTTP checks request a page and validate the response. WebSocket checks perform the HTTP upgrade handshake that switches the connection from HTTP to the WebSocket protocol. A server might respond to regular HTTP requests just fine but fail to accept WebSocket upgrades — WebSocket checks catch exactly that failure mode.

Each check records the total connection time, DNS lookup duration, TCP connect time, TLS handshake time (for WSS), the resolved IP address, and IP family. For WSS endpoints, SSL certificate details including issuer, validity dates, and expiration warnings are also captured.

When a WebSocket check fails, exit1.dev performs an automatic 30-second re-check. An alert is only triggered after consecutive failures. This eliminates false positives from brief network blips or server restarts, while still catching real outages quickly.

WebSocket checks support all the same alert channels as other check types: email (all plans), SMS (Pro and Agency), and webhooks (all plans). Slack, Discord, and Microsoft Teams channels are included on Pro and Agency. Webhooks integrate with PagerDuty, Opsgenie, and any other webhook-enabled platform.

Need faster WebSocket checks?

Upgrade to Nano for 1-minute WebSocket check intervals, SMS alerts, 200 monitors, and 1-year data retention.

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Real-Time Monitoring

Monitor websites and APIs with fast checks and instant alerts when issues occur.

SSL Monitoring

Automatic certificate validation, expiration alerts, and security checks for HTTPS and WSS endpoints.

Smart Alerting

Configure webhooks, email alerts, and custom notification rules to stay informed about issues.

Analytics & Reports

Track uptime trends, response times, and performance metrics with detailed analytics.

Global Monitoring

Monitor your infrastructure from multiple global locations for comprehensive coverage.

API Integration

Integrate monitoring data into your workflows with our comprehensive REST API.

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