fiftyone.core.session.client

Session server-sent events client.

Copyright 2017-2025, Voxel51, Inc.

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Classes:

Client(address, auto, port, remote, start_time)

class fiftyone.core.session.client.Client(address: str, auto: bool, port: int, remote: bool, start_time: float)

Bases: object

Attributes:

origin	The origin of the server
is_open	Whether the client is connected

Methods:

open(state)	Open the client connection
close()	Close the client connection
send_event(event)	Sends an event to the server
add_event_listener(event_name, listener)	Adds an event listener callback for the provided event name.
remove_event_listener(event_name, listener)	Removes an event listener callback for the provided event name if it has been registered

address: str

auto: bool

port: int

remote: bool

start_time: float

property origin

The origin of the server

property is_open

Whether the client is connected

open(state: fiftyone.core.state.StateDescription) → None

Open the client connection

Arg:

state: the initial state description

close()

Close the client connection

send_event(event: Union[CaptureNotebookCell, CloseSession, DeactivateNotebookCell, ReactivateNotebookCell, SelectSamples, SelectLabels, SetColorScheme, SetGroupSlice, SetSample, SetSpaces, StateUpdate, SetFieldVisibilityStage]) → None

Sends an event to the server

Parameters

event – the event

add_event_listener(event_name: str, listener: Callable) → None

Adds an event listener callback for the provided event name. Events sent from client and from the server connection will be dispatched to the listener

Parameters

• event_name – the event name

• listener – the listener callback

remove_event_listener(event_name: str, listener: Callable) → None

Removes an event listener callback for the provided event name if it has been registered

Parameters

• event_name – the event name

• listener – the listener callback