Solved

Convert IPs in Host names

Posted on 2000-03-12
2
171 Views
Last Modified: 2010-04-04
Hi ,
I have the IPs of some servers and I wish to know the host names .
How can I do it ?
Can I know the location , too ?

Regards,
Nick

I wish to use this informations  in a traceroute program .
0
Comment
Question by:ginsonic
2 Comments
 
LVL 13

Accepted Solution

by:
Epsylon earned 55 total points
ID: 2611206
Try this:

uses WinSock;

function GetHostName(name : string) : string;
var
wsdata : TWSAData;
  he : PHostEnt;
  ip : TInAddr;          
begin
  WSAStartup(MakeWord(1, 1), wsdata);
  ip.S_addr := inet_addr(PChar(name));
  he := gethostbyaddr(@ip.S_un_b, 4, AF_INET);      
  if he<>nil then
    Result := string(he.h_name)
  else
    Result := IntToStr(WSAGetLastError);
  WSACleanup();
end;

function GetIPAddress(name : string) : string;
var wsdata : TWSAData;
    he : PHostEnt;
    ss : pchar;
    ip : TInAddr;
begin
  WSAStartup(MakeWord(1, 1), wsdata);
  he := gethostbyname(pchar(name));
  if he<>nil then
  begin
    ip.S_addr := integer(pointer(he^. h_addr_list^)^);
    ss := inet_ntoa(ip);
    Result := string(ss);
  end;
  WSACleanup();
end;
0
 
LVL 1

Expert Comment

by:nrico
ID: 2611536
Also, if you connect to them using a TClientSocket, you can find the name int ClientSocket1.Socket.RemoteHost;

Rico
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question