await getRandomBytes()

in src/states.js [371:381]


      await getRandomBytes(32),
      sessionId,
      [
        new SupportedVersionsExtension(null, VERSION_TLS_1_3),
        new PreSharedKeyExtension(null, null, pskIndex),
      ]
    ));
    // If the client sent a non-empty sessionId, the server *must* send a change-cipher-spec for b/w compat.
    if (sessionId.byteLength > 0) {
      await this.conn._sendChangeCipherSpec();
    }