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I'm afraid there has not been any progress. We weren't able to find a solution using the existing AF_UNIX implementation. The proposed implementation based on Windows named pipes (topic/af_unix branch) stalled because of an issue you reported, which I referred to as a performance problem. But it's a pretty severe performance problem. An alternative proposed by Mark Geisert based on Posix message queues (topic/af_unix_mq branch) also has issues, which may or may not be surmountable. Sorry I don't have better news. Ken