private void EnsureWSARecvMsg(SafeCloseSocket socketHandle)
{
if (this.recvMsg == null)
{
lock (this.lockObject)
{
if (this.recvMsg == null)
{
Guid guid = new Guid("{0xf689d7c8,0x6f1f,0x436b,{0x8a,0x53,0xe5,0x4f,0xe3,0x51,0xc3,0x22}}");
IntPtr ptr = this.LoadDynamicFunctionPointer(socketHandle, ref guid);
this.recvMsg = (WSARecvMsgDelegate)Marshal.GetDelegateForFunctionPointer(ptr, typeof(WSARecvMsgDelegate));
this.recvMsg_Blocking = (WSARecvMsgDelegate_Blocking)Marshal.GetDelegateForFunctionPointer(ptr, typeof(WSARecvMsgDelegate_Blocking));
}
}
}
}
private void LoadWSARecvMsg()
{
SocketError errorCode;
IntPtr ptrWSARecvMsg = IntPtr.Zero;
unsafe
{
int length;
Guid guid = new Guid("{0xf689d7c8,0x6f1f,0x436b,{0x8a,0x53,0xe5,0x4f,0xe3,0x51,0xc3,0x22}}");
// This can throw ObjectDisposedException.
errorCode = UnsafeNclNativeMethods.OSSOCK.WSAIoctl(
m_Handle,
IoctlSocketConstants.SIOGETEXTENSIONFUNCTIONPOINTER,
ref guid,
sizeof(Guid),
out ptrWSARecvMsg,
sizeof(IntPtr),
out length,
IntPtr.Zero,
IntPtr.Zero);
}
if (errorCode != SocketError.Success)
{
throw new SocketException();
}
s_WSARecvMsg = (WSARecvMsgDelegate) Marshal.GetDelegateForFunctionPointer(ptrWSARecvMsg, typeof(WSARecvMsgDelegate));
s_WSARecvMsg_Blocking = (WSARecvMsgDelegate_Blocking) Marshal.GetDelegateForFunctionPointer(ptrWSARecvMsg, typeof(WSARecvMsgDelegate_Blocking));
}
