this.server = server
    platform.assumeHttp2Support()
    platform.assumeNotBouncyCastle()
    rootCa =
      HeldCertificate.Builder()
        .serialNumber(1L)
        .certificateAuthority(0)
        .commonName("root")
        .build()
    certificate =
      HeldCertificate.Builder()
        .signedBy(rootCa)
        .serialNumber(2L)
        .commonName(server.hostName)