One of the domains not yet monitored at embarcaderomonitoring.wiert.me, was the
altd
download server for ISOs and installers on http and https level. Ultimately you want https, as most of these are about installers, so you do not want any man-in-the-middle to fiddle with them.
TLS on altd fails
Upitmerobot is not yet smart enough to check validity of TLS certificates on https connections.
Chrome, Firefox, Safari, Internet Explorer, wget, curl and ssllabs however are.
- [Archive.is] SSL Server Test: altd.embarcadero.com (Powered by Qualys SSL Labs)
- [Archive.is] SSL Server Test: altd.embarcadero.com at 23.61.194.33 (Powered by Qualys SSL Labs)
- [Archive.is] SSL Server Test: altd.embarcadero.com at 23.61.194.25 (Powered by Qualys SSL Labs)
altd hides as much from itself as possible
Uptimerobot did not like monitoring the plain http://altd.embarcadero.com/ and https://altd.embarcadero.com/ URLs, because the altd is not browsable, so it tries to hide most of its structure from access. This means they both return an odd response:
Those responses are actually 404 errors (note the -
minus sign after curl --trace-ascii
: it sends the trace to stdout
):
$ wget http://altd.embarcadero.com/ --2018-09-05 10:44:23-- http://altd.embarcadero.com/ Resolving altd.embarcadero.com (altd.embarcadero.com)... 88.221.144.40, 88.221.144.10 Connecting to altd.embarcadero.com (altd.embarcadero.com)|88.221.144.40|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2018-09-05 10:44:23 ERROR 404: Not Found. $ curl --verbose http://altd.embarcadero.com/ * Trying 88.221.144.40... * TCP_NODELAY set * Connected to altd.embarcadero.com (88.221.144.40) port 80 (#0) > GET / HTTP/1.1 > Host: altd.embarcadero.com > User-Agent: curl/7.54.0 > Accept: */* > < HTTP/1.1 404 Not Found < Server: Apache < Content-Type: text/html; charset=iso-8859-1 < Content-Length: 16 < Date: Wed, 05 Sep 2018 08:45:57 GMT < Connection: keep-alive < * Connection #0 to host altd.embarcadero.com left intact File not found." $ curl --trace-ascii - http://altd.embarcadero.com/ == Info: Trying 88.221.144.40... == Info: TCP_NODELAY set == Info: Connected to altd.embarcadero.com (88.221.144.40) port 80 (#0) => Send header, 84 bytes (0x54) 0000: GET / HTTP/1.1 0010: Host: altd.embarcadero.com 002c: User-Agent: curl/7.54.0 0045: Accept: */* 0052: <= Recv header, 24 bytes (0x18) 0000: HTTP/1.1 404 Not Found <= Recv header, 16 bytes (0x10) 0000: Server: Apache <= Recv header, 45 bytes (0x2d) 0000: Content-Type: text/html; charset=iso-8859-1 <= Recv header, 20 bytes (0x14) 0000: Content-Length: 16 <= Recv header, 37 bytes (0x25) 0000: Date: Wed, 05 Sep 2018 08:47:19 GMT <= Recv header, 24 bytes (0x18) 0000: Connection: keep-alive <= Recv header, 2 bytes (0x2) 0000: <= Recv data, 16 bytes (0x10) 0000: File not found." File not found."== Info: Connection #0 to host altd.embarcadero.com left intact
This is also the reason that WayBack does not want to archive that link, but it can be archived at [Archive.is] https://altd.embarcadero.com/.
Luckily, a Google search for site:altd.embarcadero.com revealed there is a non-installer file short enough (~72 kibibytes) for Uptime robot to check, so it now verifies it can access these:
- http://altd.embarcadero.com/download/allaccess/allaccessserver/All-Access%20Server%201.0.1%20Installation%20Guide.pdf
- https://altd.embarcadero.com/download/allaccess/allaccessserver/All-Access%20Server%201.0.1%20Installation%20Guide.pdf
–jeroen