# Which Problems Are Solved
The current maintained gRPC server in combination with a REST (grpc)
gateway is getting harder and harder to maintain. Additionally, there
have been and still are issues with supporting / displaying `oneOf`s
correctly.
We therefore decided to exchange the server implementation to
connectRPC, which apart from supporting connect as protocol, also also
"standard" gRCP clients as well as HTTP/1.1 / rest like clients, e.g.
curl directly call the server without any additional gateway.
# How the Problems Are Solved
- All v2 services are moved to connectRPC implementation. (v1 services
are still served as pure grpc servers)
- All gRPC server interceptors were migrated / copied to a corresponding
connectRPC interceptor.
- API.ListGrpcServices and API. ListGrpcMethods were changed to include
the connect services and endpoints.
- gRPC server reflection was changed to a `StaticReflector` using the
`ListGrpcServices` list.
- The `grpc.Server` interfaces was split into different combinations to
be able to handle the different cases (grpc server and prefixed gateway,
connect server with grpc gateway, connect server only, ...)
- Docs of services serving connectRPC only with no additional gateway
(instance, webkey, project, app, org v2 beta) are changed to expose that
- since the plugin is not yet available on buf, we download it using
`postinstall` hook of the docs
# Additional Changes
- WebKey service is added as v2 service (in addition to the current
v2beta)
# Additional Context
closes#9483
---------
Co-authored-by: Elio Bischof <elio@zitadel.com>
# Which Problems Are Solved
It is currently not possible to use SAML with the Session API.
# How the Problems Are Solved
Add SAML service, to get and resolve SAML requests.
Add SAML session and SAML request aggregate, which can be linked to the
Session to get back a SAMLResponse from the API directly.
# Additional Changes
Update of dependency zitadel/saml to provide all functionality for
handling of SAML requests and responses.
# Additional Context
Closes#6053
---------
Co-authored-by: Livio Spring <livio.a@gmail.com>
