Winsock being initialized with "DRAFT" version of 2.0

Not sure whether this makes any difference to the world in general, I just think it's a good idea to default to the latest version. (Specify version 2.2 when initializing Winsock.)

• v2.0 was only an internal draft version.
• v2.1 was the first public winsock 2 specification.
• Nobody needs 16-bit OS support these days anymore?
• v2.2 itself is ages old, and supported back to Windows 95 OSR2.

https://en.wikipedia.org/wiki/Winsock#Specifications

https://learn.microsoft.com/en-us/windows/win32/api/winsock/nf-winsock-wsastartup

 

https://github.com/qt/qtbase/blob/b839e9b36db3a4e50dfb34521d8ef8de1fd01969/src/corelib/global/qsysinfo.cpp#L135-L145

 

```

QWindowsSockInit::QWindowsSockInit()
:   version(0)
{
    //### should we try for 2.2 on all platforms ??
    WSAData wsadata;

    // IPv6 requires Winsock v2.0 or better.
    if (WSAStartup(MAKEWORD(2, 0), &wsadata) != 0)

{         qWarning("QTcpSocketAPI: WinSock v2.0 initialization failed.");     }

else {
        version = 0x20;

```

 

https://github.com/qt/qtbase/blob/b839e9b36db3a4e50dfb34521d8ef8de1fd01969/tests/auto/network/socket/qtcpserver/tst_qtcpserver.cpp#L520

 

```

    QVERIFY(WSAStartup(MAKEWORD(2,0), &wsaData) == NO_ERROR);

```

 

https://github.com/qt/qtbase/blob/b839e9b36db3a4e50dfb34521d8ef8de1fd01969/tests/manual/network_stresstest/tst_network_stresstest.cpp#L85

 

```

    // IPv6 requires Winsock v2.0 or better.
    WSAStartup(MAKEWORD(2,0), &wsadata);

```

 

https://github.com/qt/qtbase/blob/b839e9b36db3a4e50dfb34521d8ef8de1fd01969/tests/manual/network_remote_stresstest/tst_network_remote_stresstest.cpp#L77-L78

 

```

    // IPv6 requires Winsock v2.0 or better.
    WSAStartup(MAKEWORD(2,0), &wsadata);

```