HTTP / HTTPS Monitoring

HTTP/HTTPS monitoring is the core of CheckOps. Every check runs from multiple European regions simultaneously, giving you a complete picture of endpoint availability and performance.

CONFIGURATION

Parameter	Description	Default
`url`	Full URL including protocol	Required
`method`	HTTP method (GET, POST, PUT, DELETE, HEAD)	GET
`interval`	Check frequency in seconds	60
`timeout`	Request timeout in milliseconds	10000
`follow_redirects`	Follow 3xx redirects	true
`regions`	Array of region codes	All available

REQUEST OPTIONS

You can configure custom headers and request body for each monitor:

{
  "headers": {
    "Authorization": "Bearer ${API_TOKEN}",
    "Accept": "application/json"
  },
  "body": "{\"ping\": true}"
}

Environment variables are supported in header values using ${VAR} syntax.

ASSERTIONS

Assertions define what constitutes a healthy response. A check fails if any assertion fails.

AVAILABLE ASSERTION TYPES

Type	Operators	Example
`status_code`	equals, not_equals, greater_than, less_than	Status is 200
`response_time`	less_than, greater_than	Response under 2000ms
`header`	equals, contains, not_contains, exists	`Content-Type` contains `json`
`body`	contains, not_contains, equals, matches_regex	Body contains `"ok"`
`json_path`	equals, contains, greater_than, less_than	`$.status` equals `"healthy"`
`ssl_days_remaining`	greater_than	SSL cert valid for 30+ days
`body_size`	less_than, greater_than	Response under 1MB

EXAMPLE CONFIGURATION

{
  "assertions": [
    { "type": "status_code", "operator": "equals", "value": 200 },
    { "type": "response_time", "operator": "less_than", "value": 1500 },
    { "type": "json_path", "path": "$.status", "operator": "equals", "value": "ok" },
    { "type": "ssl_days_remaining", "operator": "greater_than", "value": 14 }
  ]
}

SSL CERTIFICATE MONITORING

HTTPS monitors automatically track SSL certificate status:

Expiration date — Alerts when certificate is expiring within your threshold (default: 14 days)
Certificate chain — Validates the full chain of trust
Protocol version — Reports TLS version negotiated
Issuer — Tracks certificate authority

SSL warnings appear as amber status on the dashboard without marking the monitor as DOWN.

RESPONSE DATA

Each check result includes:

Field	Description
`status`	UP, DOWN, or DEGRADED
`response_time`	Total request duration in ms
`status_code`	HTTP response status code
`dns_time`	DNS resolution time in ms
`tls_time`	TLS handshake time in ms
`ttfb`	Time to first byte in ms
`region`	Region that executed the check
`timestamp`	ISO 8601 timestamp

All timing data is stored and available for historical analysis and performance trending.