Use HTTPS.

[andreif]

Adds support of HTTPS ref in addition to the existing HTTP.

[andreif]

Tested by adding

    {
        "description": "remote ref, containing refs itself using HTTPS",
        "schema": {"$ref": "https://json-schema.org/draft-04/schema#"},
        "tests": [
            {
                "description": "remote ref valid",
                "data": {"minLength": 1},
                "valid": true
            },
            {
                "description": "remote ref invalid",
                "data": {"minLength": -1},
                "valid": false
            }
        ]
    },

to https://github.com/json-schema-org/JSON-Schema-Test-Suite/blob/main/tests/draft4/ref.json#L229

[andreif]

Workaround:

import Ajv from 'ajv-draft-04';
import { SchemaObject } from 'ajv';

const ajv = new Ajv();

const META_SCHEMA_ID = 'http://json-schema.org/draft-04/schema';

const httpsSchemaId = META_SCHEMA_ID.replace(/^http:/, 'https:');
const httpsSchema = ajv.getSchema(META_SCHEMA_ID)?.schema as SchemaObject;
httpsSchema.id = httpsSchema.$schema = httpsSchemaId + '#';

ajv.addMetaSchema(httpsSchema, httpsSchemaId, false);