Summary:
Standardize WS implementation for JS environments.
Why do we need a separate server implementation for browsers?
Browser targets cannot authenticate via the default certificate exchange flow. For browser targets we verify the origin instead.
Moreover, for already forgotten reasons the initial implementation of the WS server for browsers used a different kind of message structure and added extra `connect`/`disconnect` messages. After examination, it seems the `connect`/`disconnect` flow is redundant.
Major changes:
1. Updated class hierarchy for WS server implementations.
2. Updated browser WS server to support the modern and the legacy protocols.
3. Now a websocket connection with the device is closed on error. The idea is it is highly unlikely to handle any subsequent messages properly once we observe an error. It is better to bail and reconnect. What do you think?
Reviewed By: mweststrate
Differential Revision: D31532172
fbshipit-source-id: f86aa63a40efe4d5263353cc124fac8c63b80e45
Summary: I unintentionally added logging of csr certificates in my previous diff. This diff makes sure we're not logging them anymore.
Reviewed By: mweststrate
Differential Revision: D31609709
fbshipit-source-id: e43b348dbd62653f8a6e9089930c2a3699b29a12
Summary: moved `app/src/server` to `flipper-server-core/src` and fixed any fallout from that (aka integration points I missed on the preparing diffs).
Reviewed By: passy
Differential Revision: D31541378
fbshipit-source-id: 8a7e0169ebefa515781f6e5e0f7b926415d4b7e9
