Does delphi support getaddrinfo function?

[swim]

Hi,

Anyone knows that does delphi support getaddinfo() function which is used for get host ipv6 addr?

I can't find it in winsock2.pas.

Thanks!!!

 

[whosrdaddy]

Delphi, does not support ipv6 out of the box.
Indy10 has v6 support :

http://www.indyproject.org/Sockets/Download/Files/Indy10.aspx

/Daddy

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[swim]

whosrdaddy, thank you for your rapidly answer.

I used Delphi 7, does it use Indy9 or Indy10?

If delphi7 used Indy9, should I install Indy 10?

Thanks a lot

 

[whosrdaddy]

If im correct, D7 uses indy v8. you really should use indy10. (don't forget to remove built-in indy version first!)

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[sggaunt]

Delphi 7 has Indy 9.

Steve [The sane]: Delphi a feersum engin indeed.

 

[swim]

Thanks all.

Delphi7 uses Indy9.

I remove it and install Indy10.

Put a TIdUDPClient on the form and set its IPVersion=IPv6, then get my PC's addr by:

GStack.LocalAddress

The answer is still IPv4 addr, not IPv6(I do have IPv6).

GStack.LocalAddresses return the same IPv4 addr.

Any help?

 

[whosrdaddy]

and if you try UDPClient.Binding.IP ??

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[swim]

UDPClient.Binding.IP is a left value? I need a right value to show my IPv6 address.

 

[Griffyn]

What do you mean by left value, and right value?

You can read and write to the UDPClient.Binding.IP property.
Check that UDPClient.Binding.IPVersion is also set to IPv6 - it should be set when you when you set UDPClient.IPVersion.

 

[whosrdaddy]

this works for me:

procedure TFrm_main.Button1Click(Sender: TObject);

var Hostname : array[0..255] of Char;

begin
 GetHostName(HostName, SizeOf(HostName));
 ShowMessage(GStack.ResolveHost(HostName, id_ipv6));
end;

be aware you need an Indy component on your form, otherwise Gstack is not initialized (and you'll get an AV)

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What You See Is What You Get
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[swim]

Thanks for Griffyn and whosrdaddy. I'll try it.

 

[swim]

whosrdaddy,

I tried your code.
It seems that it returns ipv6 address under Windows 2003, but under windows xp, it returns ::1 (loopback address)?

 

[Griffyn]

You would need the IPv6 TCP stack installed. I think this is an update under Microsoft's WindowsUpdate.

 

[swim]

Griffyn, thank you for your kind help.

Could you please tell me where to download the IPv6 TCP stack ?

Thanks

 

[Griffyn]

see this page

http://www.microsoft.com/technet/network/ipv6/ipv6faq.mspx