Scan API doesn't return results

[ahmetgunes]

Hi, sorry if I'm breaking the contribution guidelines but I couldn't find the correct way. I'm having problems with the TLS Observatory Public API.

The problem

My issue is that when using the TLS Observatory Public API for the Results endpoint never gets completed. This can also be observed from the Web UI

The issue started to appear around 10.12.2020

To reproduce

curl --location --request POST 'https://tls-observatory.services.mozilla.com/api/v1/scan?target=google.de&rescan=true'
## Retrieve the scan id from the result
curl --location --request GET 'https://tls-observatory.services.mozilla.com/api/v1/results?id=SCAN_ID'

The complete_percentage parameter in the response of Results request is always empty.

Sample Response

{
    "id": 41725109,
    "timestamp": "2020-12-15T13:35:56.387536Z",
    "target": "google.de",
    "replay": -1,
    "has_tls": false,
    "cert_id": -1,
    "trust_id": -1,
    "is_valid": false,
    "completion_perc": 0,
    "connection_info": {
        "scanIP": "",
        "serverside": false,
        "ciphersuite": null,
        "curvesFallback": false
    },
    "ack": false,
    "attempts": 0,
    "analysis_params": {}
}

Please let me know if I can provide anything else.

Thank you in advance.

[gene1wood]

This was also reported in mozilla/http-observatory#441

[g-k]

The truststores were out of date and the scanners were dying.

Fixed with #417 and #418.