Disclaimer: This is still just from quick Googling, I actually haven't done this myself, but I hope these pointers help. It looks to me like you would set up a GSocketService which has an incoming event, get the GSocketConnection's GSocket file descriptor, and then register that with a GIOChannel via g_io_add_watch. It also appears that one can write a handler for the client in a blocking manner in a separate thread via GThreadedSocketService.

In reply to Re^3: Can GTK3 be driven externally? by haukex
in thread Can GTK3 be driven externally? by holandes777

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