1. Nuke `signed_identity_keys` column for all rows of `cookies` table:
2. Refresh the page on web so `handleInitialClientSocketMessage` gets hit on the `keyserver`
3. Observe that the `web` client constructs and sends a valid `signedIdentityKeysBlob` by setting breakpoints in `keyserver`:
4. Step through `processClientResponses` on the `keyserver` and make sure `cookies` table is updated as expected:
5. "Refresh" the `native` app running in iOS Simulator so `handleInitialClientSocketMessage` gets hit on the `keyserver`.
6. Observe that the `native` client constructs and sends a valid `signedIdentityKeysBlob` by setting breakpoints in `keyserver`:
7. Step through `processClientResponses` on the `keyserver` and make sure `cookies` table is updated as expected: