add support for server.address()

[srghma]

there is already support for this method in https://github.com/purescript-node/purescript-node-net/blob/1fd91c872ecff202ae86b848f2c8d054f7a751f3/src/Node/Net/Server.purs#L72-L88

string means ICP or pipe of socket

http.server inherits from net.server

https://nodejs.org/api/http.html#http_class_http_server

the question is can it return String if server is created using purescript-node-http?

i.e. should it be

address :: Server -> Effect (Maybe (Either Address String))

or

address :: Server -> Effect (Maybe Address)

[srghma]

oh, yes, it can, we support sockets

purescript-node-http/src/Node/HTTP.purs

Line 68 in b18d054

foreign import listenSocket :: Server -> String -> Effect Unit -> Effect Unit

[JordanMartinez]

Fixed by #49.