ipv6

[ton4eg]

Is it possible to use async for ipv6?

I tried something like this:

async = require 'async'
async.tcp.listen({host='::', port=8088}, function(client)
      client.ondata(function(chunk)
            print('received: ' .. chunk)
            client.write('thanks!')
      end)
      client.onend(function()
            print('client gone...')
      end)
end)

async.go()

strace show that bind(10, {sa_family=AF_INET, sin_port=htons(8088), sin_addr=inet_addr("255.255.255.255")}, 16) = 0

And 255.255.255.255 seems wrong...

I tried luv:

   local server = uv.new_tcp()
   uv.tcp_bind(server, host, port)
   server:listen(128, function(err)
                    assert(not err, err)
                    local client = uv.new_tcp()
                    server:accept(client)

                    on_connection(client)
   end)

And it supports ipv6.

But if I reinstall async this luv example stop work with:
attempt to call method 'listen' (a nil value)
stack traceback:
test_luv.lua:8: in function 'create_server'
test_luv.lua:22: in main chunk
[C]: in function 'dofile'
...arev/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk
[C]: at 0x00406680

[soumith]

async does seem to have ipv6 issues. i didn't spend time tracking them down, but i ran into similar issues.
One solution is to bind to 0.0.0.0 which works even with ipv6 (but binds to alll interfaces which might be insecure depending on what you want to do)

[ton4eg]

Tried 0.0.0.0 but still don't work for me.