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[WIP] Fix network hanging issues #8756

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@sepalani sepalani commented Apr 22, 2020

This PR should truly fix:

What happened (assuming there is no timing issues):

  1. The receive thread is on a blocking RecvFrom call
  2. The game calls SOCleanup which:
    • calls IOS_Close on the network handle
    • sets soState = 1 (soState = 2 before this)
  3. The game calls SOClose but ioctlv isn't fired because soState = 1

In other words, RecvFrom won't get a response and will wait forever (since Dolphin doesn't receive IOCTL_SO_CLOSE), again...

It might require a hardware test to confirm that's the intended behaviour.

Ready to be reviewed.

@sepalani sepalani changed the title IOS/KD: Cleanup sockets on IOCTL_NWC24_CLEANUP_SOCKET [WIP] Fix network hanging issues Apr 22, 2020
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@sepalani sepalani commented Apr 22, 2020

I added a timeout on blocking connect call based on this hardware test. Beware that it tries to connect to an ubisoft server (which timeout after ~3 minutes on hardware).

I'll need to reverse IOS to confirm that behaviour, however.

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@sepalani sepalani commented Apr 22, 2020

Since all these commits will require appropriate hwtest, I'll split them in different PRs.

@leoetlino leoetlino closed this Apr 27, 2020
@sepalani sepalani deleted the kd-cleanup branch Apr 27, 2020
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