Filespooler provides the fspl queue-write command to easily add files to a queue. However, the design of Filespooler intentionally makes it easy to add files to the queue by some other command. For instance, Using Filespooler over Syncthing has Syncthing do the final write, the nncp-file (but not the nncp-exec) method in Using Filespooler over NNCP had NNCP do it, and so forth. This page documents the requirements for a tool to write to the Filespooler queue.
