Process_closed is raised when reading on a channel and the server side of the application closed channel ( the channel was garbage collected ).

Channel_full is raised when trying to read on a channel marked full by the server.

This exception is raised (in Lwt) on the client if a call to a server function Eliom_pervasives.​server_function fails (in Lwt) on the server side.

Event handlers like Error a_api: invalid contents may raise False to cancel the event (as if the JavaScript function returned false).

Process_closed is raised when reading on a channel and the server side of the application closed the client process.