Should autoconfigure hosts for Infrastructure

[hrydgard]

We already have a built-in mechanism for remapping domains (see #19841), so there's no reason people should have to configure this manually. I want to make it a built-in list auto-updated from ppsspp.org.

Let's collect all the hosts settings needed for various games:

MOHH:

86.223.243.173 pspmoh07.ea.com
86.223.243.173 pspmoh08.ea.com
86.223.243.173 tos.ea.com

DNS: 86.223.243.173   (server also works as DNS)

SOCOM:

67.222.156.250 socomftb2.psp.online.scea.com
67.222.156.250 socompsp-prod.muis.pdonline.scea.com

Twisted Metal:

67.222.156.251   tmheadonpsp-prod.pdonline.scea.com

WipEout Pulse:

145.239.30.230 wipeoutpulse.online.scee.com
145.239.30.230 wipeoutpulse.muis.online.scee.com

Motorstorm: Arctic Edge/Motorstorm: Raging Ice:

145.239.30.230 motorstormpsp.muis.online.scee.com

Actually, with #19858 , all we need to do is configure the DNS per game.

So maybe something like (in JSON, just because, and designed for maintainability):

{
    "default": {
         "dns": "67.222.156.251",
    }
    "MOHH": {
        "ids": ["NPJH12345", "NPJH53155"],
        "dns": "142.24.13.25",
        "incompatible": ["Windows"],
    },
    "Wipeout Pulse": {
        "ids": [],
    },
    "etc",
}

[hrydgard]

Interesting document:

https://docs.google.com/document/d/1B2BTbs2srlZ32SN8XVpqIm68_0oI4QOYshJvG0npXr0/edit?tab=t.0

I still don't understand whether we need to provide these, or if the "Primary DNS" that we use (67.222.156.250 ) is taking care of many of them.

[hrydgard]

Ah, it seems we just tell the games about the configured primary DNS but we don't actually make use of it, from what I can tell. So what we really should do is make our own DNS queries to the specified DNS when a game calls sceNetInetInetAddr (the psp equivalent of getaddrinfo).

[ChaCheeChoo]

while both games work both on DNS 145.239.30.230 and DNS 67.222.156.250 (via them redirecting the games to 145.239.30.230) for completeness sake:

WipEout Pulse:
145.239.30.230 wipeoutpulse.online.scee.com
145.239.30.230 wipeoutpulse.muis.online.scee.com

Motorstorm: Arctic Edge/Motorstorm: Raging Ice:
145.239.30.230 motorstormpsp.muis.online.scee.com

[hrydgard]

Alright, so I think the current plan is to have a mapping game id -> dns server on a JSON file on the server, and use the DNS to manually look up the urls. That way we won't need to list redirects.