Created
January 18, 2020 00:00
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Detecting when a heroku application is down for maintenance
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| curl -v 'https://stormy-lake-09991.herokuapp.com/' -H 'Content-Type: application/json' -H 'Accept: application/json' -H 'Connection: keep-alive' -H 'Pragma: no-cache' -H 'Cache-Control: no-cache' | |
| * Trying 34.197.140.84... | |
| * TCP_NODELAY set | |
| * Connected to stormy-lake-09991.herokuapp.com (34.197.140.84) port 443 (#0) | |
| * ALPN, offering h2 | |
| * ALPN, offering http/1.1 | |
| * successfully set certificate verify locations: | |
| * CAfile: /etc/ssl/cert.pem | |
| CApath: none | |
| * TLSv1.2 (OUT), TLS handshake, Client hello (1): | |
| * TLSv1.2 (IN), TLS handshake, Server hello (2): | |
| * TLSv1.2 (IN), TLS handshake, Certificate (11): | |
| * TLSv1.2 (IN), TLS handshake, Server key exchange (12): | |
| * TLSv1.2 (IN), TLS handshake, Server finished (14): | |
| * TLSv1.2 (OUT), TLS handshake, Client key exchange (16): | |
| * TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1): | |
| * TLSv1.2 (OUT), TLS handshake, Finished (20): | |
| * TLSv1.2 (IN), TLS change cipher, Change cipher spec (1): | |
| * TLSv1.2 (IN), TLS handshake, Finished (20): | |
| * SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256 | |
| * ALPN, server did not agree to a protocol | |
| * Server certificate: | |
| * subject: C=US; ST=California; L=San Francisco; O=Heroku, Inc.; CN=*.herokuapp.com | |
| * start date: Apr 19 00:00:00 2017 GMT | |
| * expire date: Jun 22 12:00:00 2020 GMT | |
| * subjectAltName: host "stormy-lake-09991.herokuapp.com" matched cert's "*.herokuapp.com" | |
| * issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert SHA2 High Assurance Server CA | |
| * SSL certificate verify ok. | |
| > GET / HTTP/1.1 | |
| > Host: stormy-lake-09991.herokuapp.com | |
| > User-Agent: curl/7.64.1 | |
| > Content-Type: application/json | |
| > Accept: application/json | |
| > Pragma: no-cache | |
| > Cache-Control: no-cache | |
| > | |
| < HTTP/1.1 503 Service Unavailable | |
| < Connection: keep-alive | |
| < Server: Cowboy | |
| < Date: Fri, 17 Jan 2020 23:59:42 GMT | |
| < Content-Length: 511 | |
| < Content-Type: text/html; charset=utf-8 | |
| < Cache-Control: no-cache, no-store | |
| < | |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <meta charset="utf-8"> | |
| <title>Offline for Maintenance</title> | |
| <style media="screen"> | |
| html,body,iframe { | |
| margin: 0; | |
| padding: 0; | |
| } | |
| html,body { | |
| height: 100%; | |
| overflow: hidden; | |
| } | |
| iframe { | |
| width: 100%; | |
| height: 100%; | |
| border: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <iframe src="//www.herokucdn.com/error-pages/maintenance-mode.html"></iframe> | |
| </body> | |
| * Connection #0 to host stormy-lake-09991.herokuapp.com left intact | |
| </html>* Closing connection 0 |
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