WINE Network.Socket.setSockOpt:failed(Badprotocoloption(WSAENOPROTOOPT))

[hamishmack]

It looks like #603 might have broken the socket function (at least on WINE).

Haskell.nix uses iserv-proxy-interpreter.exe to run TH code under WINE. Since the release of network-3.2.8.0 this has been failing with:

iserv-proxy-interpreter.exe:Network.Socket.setSockOpt:failed(Badprotocolopt
ion(WSAENOPROTOOPT))
iserv-proxy: Network.Socket.connect: <socket: 11>: does not exist (Connection refused)

I think what is going on is that the socket function in iserv-proxy-interpreter (the part running under WINE) is failing and then the iserv-proxy connect function fails (since there is nothing to connect to.

I think the error is coming from this call https://github.com/haskell/network/pull/603/files#diff-32af11237764f85b335f809887f47a50b4ef46f94ba462283f8a9a80e669fa65R126

My guess is that this works ok on Windows (since the network GitHub tests are passing), but fails on WINE.

[kazu-yamamoto]

I don't know WINE well.
@hamishmack Would you suggest how to fix this issue or send a PR?

[hamishmack]

Do you know what happens on Windows?

I think either it must:

• Call the function, but not cause an error. Perhaps we will need to add code to ignore the error when running on WINE?
• Not call the function because it is excluded by the #ifdef when compiling on windows. Perhaps we could exclude the call when defined(mingw32_HOST_OS) (that would exclude it for cross compilation too)?

I'll try to make a GitHub action to reproduce the problem cross compiling and running on WINE.

[kazu-yamamoto]

On Windows

• pattern DontFragment = SockOpt (-1) (-1) is used
• setDontFragment s is defined as return ()

So, nothing is called specially.

[adithyaov]

I've encountered a similar issue in the Appveyor Windows CI.

See: https://ci.appveyor.com/project/harendra-kumar/streamly/builds/52666558?fullLog=true (L: 9213)

streamly-tests     > Failures:
streamly-tests     > 
streamly-tests     >   Streamly\Test\Network\Inet\TCP.hs:141:13: 
streamly-tests     >   1) Network.Inet.TCP, Accept Connections, acceptOnPort
streamly-tests     >        uncaught exception: IOException of type OtherError
streamly-tests     >        Network.Socket.setSockOpt: failed (Bad protocol option (WSAENOPROTOOPT))
streamly-tests     >        (after 1 test)
streamly-tests     > 
streamly-tests     >   To rerun use: --match "/Network.Inet.TCP/Accept Connections/acceptOnPortLocal/" --seed 907819268

I have limited knowledge of the Appveyor CI (and Windows). If there is any specific information you need for debugging, I can fetch that.

I'll create a minimal reproducible example and share it.

[kazu-yamamoto]

I would like to know how HAVE_DECL_IP_DONTFRAG and HAVE_DECL_IP_MTU_DISCOVER are defined in include/HsNetworkConfig.h after cabal configure.