Resuse the same Client for connecting to Google DNS

[freddyaboulton]

safehttpx/safehttpx/__init__.py

Line 44 in c3d25e1

async with httpx.AsyncClient() as client:

We should use a single client instance in this case as it will save us from opening a new connection every time.

[abidlabs]

I don't think that's possible as the main AsyncClient here:

https://github.com/gradio-app/safefetch/blob/e1343f9ac9fabf65f5f3450dde933fea68bd6cd1/safehttpx/__init__.py#L136

requires passing in the transport, which requires us to have already made the call to the Google DNS to get the IP address

[freddyaboulton]

I was referring to the client in resolve_hostname_google - it's creating it's own client but I think we can just use the same one esp since we're always connecting to the same host in that function.