opendxl added a new solution:
OpenDXL brokers are configured by default to limit the maximum size of a message to 1 MB. The File Transfer DXL Python utilities allow the contents of a file to be transferred in segments small enough to fit into a DXL message.
This package provides an application which registers a service with the DXL fabric and a request callback which can store files sent to it. The File Transfer DXL Python client library library provides higher-level wrappers for client-side transmission of files.
See the Wiki for an overview of the File Transfer API DXL Python service and usage examples.
See the File Transfer DXL Python service documentation for installation instructions, API documentation, and usage examples.