Assertion Failed: Extra control data returned besides TOS? 0x0/0x1b

[lkj-dpc]

Hello,

I have a crash report from one of our titles that mentions crashes then the following logs:

src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2483) : Assertion Failed: Extra control data returned besides TOS?  0x0/0x1b
src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2483) : Assertion Failed: Extra control data returned besides TOS?  0x0/0x1b
src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2489) : No control data returned even though we asked for TOS?

We don't have an in-house repro, but I'm not sure I'd be able to debug it even if we did 😅

I found other recent reports of the same issue from other games:

• Terraria
• Dota2
• Stardew Valley (Mod API)

Thanks in advance if you're able to look into this!~

[Fancy2209]

This seems to happen by just calling SteamMatchmaking()->CreateLobby() on macOS

[Sigma-dev]

Can confirm I also get this behavior on macOS

[Gillissie]

Same here, but not always. Sometimes it works. I'm experiencing it when trying to JOIN a lobby. It's inconsistent.

[kdliving14]

I also get this issue but with a single player game of Modded Stardew Valley on Mac.

[markcornwell]

Same here

src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2535) : Assertion Failed: Extra control data returned besides TOS? 0x0/0x1b src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2535) : Assertion Failed: Extra control data returned besides TOS? 0x0/0x1b src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2541) : No control data returned even though we asked for TOS? src/steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp (2541) : No control data returned even though we asked for TOS? Steam overlay is not available. Steam overlay is not available.

I should add that these errors are intermittent. Sometimes, I get them, other times not. This is on intel Mac OSX. Trying it out on windows next.