Function openWriteSession

openWriteSession(params: OpenWriteSessionParams): Promise<WriteSession>
Open a write session against a Personal Server.
Parameters
- params: OpenWriteSessionParams
Returns Promise<WriteSession>
The session to pass to writeData.

Remarks
Sends POST /v1/write/session with a Web3Signed Authorization header whose signed claims carry grantId. The handshake proof is single-use on the server; a transport retry signs a new one.

Throws
When the Personal Server refuses the handshake (errorCode names why: UNREGISTERED_BUILDER, GRANT_REQUIRED, GRANT_REVOKED, SCOPE_MISMATCH for a grant without write entries, INVALID_SIGNATURE when the key is not the grantee, GRANT_OWNER_MISMATCH, ...).

Throws
When fetch threw on every attempt.

Throws
When the signer is unusable.
- Defined in protocol/personal-server-write.ts:250