On Aug 24, 2012, at 3:51 AM, Miljenko Cvjetko <[email protected]> wrote:
> If we look into
> https://github.com/mono/mono/blob/master/mcs/class/System/System.Net.Sockets/Socket.cs
Wrong branch; Mono for Android is based on Mono 2.10, not master:
https://github.com/mono/mono/blob/mono-2-10/mcs/class/System/System.Net.Sockets/Socket.cs
I'm still not sure why line 1446 is still wrong, but it does show us what the
issue is; he's calling:
IOControl(IOControlCode.KeepAliveValues, tcpKeepAlive.ToArray(), null);
Which means he's calling the IOControl(IOControlCode, byte[], byte[]) overload:
https://github.com/mono/mono/blob/mono-2-10/mcs/class/System/System.Net.Sockets/Socket.cs#L1461
This overload does nothing, and simply throws NotImplementedException, which is
what he's seeing. Oops.
The fix is to do what master does: call the IOControl(int, byte[], byte[])
overload, which is implemented:
IOControl ((int) IOControlCode.KeepAliveValues, tcpKeepAlive.ToArray(),
null);
> No we can wonder if that is because MA is superset of Silverlight/Moonlight
> and Silverlight introduced sockets in v 4 as far as I can remember and
> probably has some restrictions. So the mono team decided to follow those
> restrictions what if hard to believe...
For future "research" purposes, when trying to determine which code is present
in Mono for Android, you'll need to know:
1. The correct branch, in this case the mono-2-10 branch. (We'll eventually
rebase atop 2.12, once that's out + ~6 months...)
2. Which files are included for a given assembly, which are listed in the
mcs/class/ASSEMBLY/monodroid_ASSEMBLY.dll.sources file:
https://github.com/mono/mono/blob/mono-2-10/mcs/class/System/monodroid_System.dll.sources
Note that csc has an extension to #include the contents of other files, so for
System.dll we also need:
https://github.com/mono/mono/blob/mono-2-10/mcs/class/System/mobile_System.dll.sources
3. Which #defines are set, generally NET_2_0, NET_2_1, MOBILE, and MONODROID.
Based on that we can see that the Socket(SocketInformation) constructor won't
be provided:
https://github.com/mono/mono/blob/mono-2-10/mcs/class/System/System.Net.Sockets/Socket.cs#L184
- Jon
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