HTTP Monitoring Scenarios

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Availability

always-up

Always returns 200 OK

https://origin.crashloop.ing/scenarios/always-up

Open

method: GET
expected_status: 200-399
interval_seconds: 60

always-down

Always returns 500 (permanent incident)

https://origin.crashloop.ing/scenarios/always-down

Open

method: GET
expected_status: 200-399
interval_seconds: 60
notes: Expect incident to stay open

hourly-outage UP · 34m 51s outage in

500 for 2 minutes at the top of every hour (UTC), else 200

https://origin.crashloop.ing/scenarios/hourly-outage

Open

method: GET
expected_status: 200-399
interval_seconds: 30
notes: Expect incident near :00, recover by ~:03 with default thresholds

outage-15m UP · 4m 51s outage in

500 for 90 seconds every 15 minutes (UTC), else 200

https://origin.crashloop.ing/scenarios/outage-15m

Open

method: GET
expected_status: 200-399
interval_seconds: 30
notes: Faster open/recover loop than hourly-outage

flaky-20

200 by default, ~20% chance of 500

https://origin.crashloop.ing/scenarios/flaky-20

Open

method: GET
expected_status: 200-399
interval_seconds: 30
notes: Mostly blips at failure_threshold 4

Responses

wrong-body

200 with body WRONG; fails body assertion expecting OK

https://origin.crashloop.ing/scenarios/wrong-body

Open

method: GET
expected_status: 200-399
body_contains: OK
interval_seconds: 60

expect-ok

200 with body OK; pair with wrong-body checks

https://origin.crashloop.ing/scenarios/expect-ok

Open

method: GET
expected_status: 200-399
body_contains: OK
interval_seconds: 60

only-204

204 No Content with empty body

https://origin.crashloop.ing/scenarios/only-204

Open

method: GET
expected_status: 204-204
interval_seconds: 60

timeout

Delays 11s before 200 (past chk's ~10s probe timeout)

https://origin.crashloop.ing/scenarios/timeout

Open

method: GET
expected_status: 200-399
interval_seconds: 300
notes: Use 5m interval; expensive on workers

body-stall

Sends part of the body, then stalls 11s before completing

https://origin.crashloop.ing/scenarios/body-stall

Open

method: GET
expected_status: 200-399
body_contains: response completed
interval_seconds: 300
notes: Use 5m interval; body read should time out before the final chunk

chunked-response

Streams a 200 response in three chunks

https://origin.crashloop.ing/scenarios/chunked-response

Open

method: GET
expected_status: 200-399
body_contains: chunk three
interval_seconds: 60
notes: Assert the final chunk arrives

compressed-body

Returns a gzip-compressed response body

https://origin.crashloop.ing/scenarios/compressed-body

Open

method: GET
expected_status: 200-399
body_contains: compressed response
interval_seconds: 60
notes: Decode the gzip body and assert its content

oversized-body

Returns a response body larger than 1 MiB with a marker past 256 KiB

https://origin.crashloop.ing/scenarios/oversized-body

Open

method: GET
expected_status: 200-399
body_contains: oversized-body-end-marker
interval_seconds: 60
notes: Expect body_assertion_failed: body_truncated at chk's 256 KiB body scan cap

deflate-body

Returns a deflate-compressed response body

https://origin.crashloop.ing/scenarios/deflate-body

Open

method: GET
expected_status: 200-399
body_contains: deflate response
interval_seconds: 60
notes: Decode the deflate body and assert its content

brotli-body

Returns a Brotli-compressed response body

https://origin.crashloop.ing/scenarios/brotli-body

Open

method: GET
expected_status: 200-399
body_contains: Brotli response
interval_seconds: 60
notes: Decode the Brotli body and assert its content

cloudflare-challenge

403 with Cloudflare's security challenge header

https://origin.crashloop.ing/scenarios/cloudflare-challenge

Open

method: GET
expected_status: 200-399
interval_seconds: 60
notes: Expect security_challenge:cloudflare when cf-mitigated survives the proxy

aws-waf-challenge

202 with AWS WAF's challenge action

https://origin.crashloop.ing/scenarios/aws-waf-challenge

Open

method: GET
expected_status: 202
interval_seconds: 60
notes: Expect security_challenge:aws_waf from x-amzn-waf-action: challenge

aws-waf-captcha

405 with AWS WAF's CAPTCHA action

https://origin.crashloop.ing/scenarios/aws-waf-captcha

Open

method: GET
expected_status: 405
interval_seconds: 60
notes: Expect security_challenge:aws_waf from x-amzn-waf-action: captcha

abrupt-disconnect

Disconnects after sending a partial response body

https://origin.crashloop.ing/scenarios/abrupt-disconnect

Open

method: GET
expected_status: 200-399
body_contains: response completed
interval_seconds: 60
notes: Read until the missing marker and expect an incomplete response-body read

Redirects

redirect-once

302 to /scenarios/always-up

https://origin.crashloop.ing/scenarios/redirect-once

Open

method: GET
expected_status: 200-399
follow_redirects: true
notes: Also create a nofollow check expecting failure or 302

redirect-chain

Starts a 5-hop redirect chain ending at /redirect/0 with 200 OK

https://origin.crashloop.ing/scenarios/redirect-chain

Open

method: GET
expected_status: 200-399
follow_redirects: true
interval_seconds: 60

redirect-loop

Redirects to itself until the client reaches its redirect limit

https://origin.crashloop.ing/scenarios/redirect-loop

Open

method: GET
expected_status: 200-399
follow_redirects: true
interval_seconds: 60
notes: Expect the client's redirect-limit failure

Request methods

POST body

POST only; echoes request body as 200, other methods 405

https://origin.crashloop.ing/scenarios/echo-post

POST request required

method: POST
expected_status: 200-399
interval_seconds: 60
notes: Send a small request body and assert it is returned

PUT body

PUT only; echoes request body as 200, other methods 405

https://origin.crashloop.ing/scenarios/echo-put

PUT request required

method: PUT
expected_status: 200-399
interval_seconds: 60
notes: Send a small request body and assert it is returned

PATCH body

PATCH only; echoes request body as 200, other methods 405

https://origin.crashloop.ing/scenarios/echo-patch

PATCH request required

method: PATCH
expected_status: 200-399
interval_seconds: 60
notes: Send a small request body and assert it is returned

DELETE body

DELETE only; echoes request body as 200, other methods 405

https://origin.crashloop.ing/scenarios/echo-delete

DELETE request required

method: DELETE
expected_status: 200-399
interval_seconds: 60
notes: Send a small request body and assert it is returned

OPTIONS body

OPTIONS only; echoes request body as 200, other methods 405

https://origin.crashloop.ing/scenarios/echo-options

OPTIONS request required

method: OPTIONS
expected_status: 200-399
interval_seconds: 60
notes: Send a small request body and assert it is returned

Request header

Returns the X-Crash-Loop-Test request header as 200

https://origin.crashloop.ing/scenarios/echo-header

Open

method: GET
expected_status: 200-399
interval_seconds: 60
notes: Set X-Crash-Loop-Test and assert its value is returned