Dear guile fiber users, Fibers is a library that I would very much like to use. It provides a nice web server. However, as I recently discovered, in a standard GNU/Linux server, not all network interfaces and addresses are up when the server is about to start (especially so with dhcp). I have a nice solution for that: every now and then, the server calls getaddrinfo. If a previously bound address does not appear anymore in the return value, then close the socket it was bound to. If a new address is returned by the function, create a new socket for it and bind it to the new address (and listen). This means that if a new address appears for the host argument, then the server will eventually listen to it without having to restart anything. If an address is dropped, eventually the server will stop listening to it.
I would like to have that in the fibers web server. However, I understand that not everyone would want it, or some would do it differently (e.g. by using guile-netlink or something else). I think the web server should make “listen”, “fcntl” (for set-nonblocking!) and “accept” generic (with parameters, or GOOPS, or…?) so that I could fit my weird thing within the call to accept. Ultimately, everything could be expressed in terms of “accept” and have the default implementation call listen and set-nonblocking! lazily during the first call to accept. What do you think? Should the fibers web server try to do the getaddrinfo thing by itself or be extensible and let me do it myself? Are you OK with GOOPS? Do you prefer parameters? Do you have other options? Best regards, Vivien
