Get hostname and ip address of local computer(2)

Following is a code that gets local machine IP addresses. The advantages over the article by Jeff Lundgren are that my code recognises ALL IP addresses and is ready for IPv6 ;-)
char szHostName[128];

if( gethostname(szHostName, 128) == 0 )
{
	// Get host adresses
	struct hostent * pHost;
	int i;
 
	pHost = gethostbyname(szHostName);
 
	for( i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
 	{
		 CString str;
 		int j;
 
 		for( j = 0; j < pHost->h_length; j++ )
 		{
			 CString addr;
 
 			if( j > 0 )
 				str += ".";
 
 			addr.Format("%u", (unsigned int)((unsigned
		 	char*)pHost->h_addr_list[i])[j]);
			str += addr;
 		}
  		// str now contains one local IP address - do whatever you want to do with it (probably add it to a list)
 	}
}




Comments

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • This paper introduces IBM Java on the IBM PowerLinux 7R2 server and describes IBM's implementation of the Java platform, which includes IBM's Java Virtual Machine and development toolkit.

  • Agile methodologies give development and test teams the ability to build software at a faster rate than ever before. Combining DevOps with hybrid cloud architectures give teams not just the principles, but also the technology necessary to achieve their goals. By combining hybrid cloud and DevOps: IT departments maintain control, visibility, and security Dev/test teams remain agile and collaborative Organizational barriers are broken down Innovation and automation can thrive Download this white paper to …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds