Solved

Get my machine IP adress

Posted on 1998-07-14
3
269 Views
Last Modified: 2013-11-20
Hi!
I have developing a client-server application.
When a client request a connection, it must send a password and the client-machine IP-adress (the adress will
be memorate in a database).
 How can I obtain in run-time the machine IP adress, where
the application is running?

                                                 Tibi
0
Comment
Question by:visualc
3 Comments
 

Author Comment

by:visualc
ID: 1319124
Adjusted points to 150
0
 

Accepted Solution

by:
mulenga earned 150 total points
ID: 1319125
You can use the following code sequence to get the ipv4 address:
( this assumes that WinSock has been properly initialized )

char buf[200];
gethostname(buf, sizeof(buf));
HOSTENT *pHostent = gethostbyname( buf );
if ( pHostent )
{
  IN_ADDR *paddr = (IN_ADDR *) pHostent->h_addr_list[0];
  printf( "IP address is %s\n", inet_ntoa (  *paddr  ) );
}

Hope this helps!
0
 

Expert Comment

by:butsy
ID: 1319126
This code will get the host name and the IP address for the computer on wich code is run. This works on VisualC++ 5SP1/2 on NT4 and 95 (98 too)
Requirements:
#include <ltwinsock2.h>

Link with Winsoc32.lib

That is it:
{
      WORD wVersionRequested;
      WSADATA wsaData;
      char name[255];
      CString ip;
      PHOSTENT hostinfo;
      wVersionRequested = MAKEWORD( 2, 0 );

      if ( 0==WSAStartup( wVersionRequested, &wsaData ) )
      {

            if( 0 == gethostname ( name, sizeof(name)))
            {
                  if((hostinfo = gethostbyname(name)) != NULL)
                  {
                        ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);
                  }
            }
           
            WSACleanup( );
      }
}
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

In this article, I'll describe -- and show pictures of -- some of the significant additions that have been made available to programmers in the MFC Feature Pack for Visual C++ 2008.  These same feature are in the MFC libraries that come with Visual …
Introduction: Finishing the grid – keyboard support for arrow keys to manoeuvre, entering the numbers.  The PreTranslateMessage function is to be used to intercept and respond to keyboard events. Continuing from the fourth article about sudoku. …
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.

912 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

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now