syntax = "proto3";
package session;
option go_package = "github.com/nspcc-dev/neofs-api-go/session";
option csharp_namespace = "NeoFS.API.Session";

import "service/meta.proto";
import "service/verify.proto";
import "refs/types.proto";

service Session {
    // Create opens new session between the client and the server
    rpc Create (CreateRequest) returns (CreateResponse);
}

// CreateRequest carries an information necessary for opening a session
message CreateRequest {
    // OwnerID carries an identifier of a session initiator.
    refs.OwnerID OwnerID = 1;

    // Lifetime carries a lifetime of the session
    service.TokenLifetime Lifetime = 2;

    // RequestMetaHeader contains information about request meta headers (should be embedded into message)
    service.RequestMetaHeader Meta = 98;
    // RequestVerificationHeader is a set of signatures of every NeoFS Node that processed request (should be embedded into message)
    service.RequestVerificationHeader Verify = 99;
}

// CreateResponse carries an information about the opened session
message CreateResponse {
    // ID carries an identifier of session token
    bytes ID = 1;

    // SessionKey carries a session public key
    bytes SessionKey = 2;
}