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Foxx Session Transports

Session transports are used by the sessions middleware to store and retrieve session identifiers in requests and responses. Session transports must implement the get and/or set methods and can optionally implement the clear method.

get

transport.get(request): string | null

Retrieves a session identifier from a request object.

If present this method will automatically be invoked for each transport until a transport returns a session identifier.

Arguments

Returns the session identifier or null if the transport cannot find a session identifier in the request.

Examples

get(req) {
  return req.get('x-session-id') || null;
}

set

transport.set(response, sid): void

Attaches a session identifier to a response object.

If present this method will automatically be invoked at the end of a request regardless of whether the session was modified or not.

Arguments

  • response: Response

    Response object to attach a session identifier to.

  • sid: string

    Session identifier to attach to the response.

Returns nothing.

Examples

set(res) {
  res.set('x-session-id', value);
}

clear

transport.clear(response): void

Attaches a payload indicating that the session has been cleared to the response object. This can be used to clear a session cookie when the session has been destroyed (e.g. during logout).

If present this method will automatically be invoked instead of set when the req.session attribute was removed by the route handler.

Arguments

  • response: Response

    Response object to remove the session identifier from.

Returns nothing.

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