“Verifikasi sertifikat server OK” tetapi “ALPN, server tidak menyetujui protokol”

Saya membuat panggilan ikal curl -v ... https://... dan output verbose berisi .... * ALPN, offering http/1.1 * SSL connection using TLS1.2 / ECDHE_RSA_AES_128_GCM_SHA256 * server certificate verification OK .... * ALPN, server did not agree to a protocol * Server auth using Basic with user...