Custom Carrier Service - items properties

Shopify Discussion
1

Hello i’am trying to develop a custom carrier service in Node

But Shopify did not send me a list of item but that :
…

rate: {
    origin: {
      country: 'FR',
      postal_code: null,
      province: null,
      city: null,
      name: null,
      address1: null,
      address2: null,
      address3: null,
      latitude: null,
      longitude: null,
      phone: null,
      fax: null,
      email: null,
      address_type: null,
      company_name: 'TestCarrierServiceFond'
    },
    destination: {
      country: 'FR',
      postal_code: '75005',
      province: null,
      city: 'Paris',
      name: null,
      address1: 'Paris',
      address2: null,
      address3: null,
      latitude: null,
      longitude: null,
      phone: null,
      fax: null,
      email: null,
      address_type: null,
      company_name: null
    },
    items: [ [Object] ],
    currency: 'EUR',
    locale: 'en-FR'
  }
}

How should i get the products list in the cart on my request to my carrier service custom ?