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Question
Get IP Address of remote computer
Currently I have an application that runs on our network. When someone logs on to the network it checks there system and gets the pc name. I would like to also get the IP address of that system. As well I may later like to ping that computer.
1) Is there a function to get the IP of this remote system?
2) IS the a function to ping a remote system and receive back the response?
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Answers
interesting link:
http://codeguru.earthweb.c
remove "http" string from URL
#include <Winsock2.h>
// do't forget to add WS2_32.LIB
// in your function
char szHostName[256];
char szIpAddress[256];
WSADATA wsaData;
HOSTENT *pHP;
SOCKADDR_IN myaddr;
myaddr.sin_family = AF_INET;
if ( SOCKET_ERROR != WSAStartup(0x202,&wsaData)
{
pHP = gethostbyname("www.google.
memcpy((char FAR *)&(myaddr.sin_addr), pHP->h_addr, pHP->h_length);
wsprintf(szIpAddress,"%d.%
WSACleanup();
}
Good Luck
Assuming your server app uses "SOCKET accept ( SOCKET s, struct sockaddr FAR* addr, int FAR* addrlen );" to accept connections from the clients you can get their ip address from the sockaddr.
e.g.
struct sockaddr_in sRecvSAddr;
int iRecvSize;
// iServerSocket is your listening socket
if( accept(iServerSocket, (struct sockaddr*)&sRecvSAddr, &iRecvSize) < 0 )
{
TRACE("Error");
}
else
{
unsigned int iIP = sServerConnectContainer.sR
}
......... if you're using CSocket or something else, just look for the sockaddr_in structure.
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by: GloomyFriarPosted on 2003-11-19 at 05:39:02ID: 9779147
gethostbyname
The gethostbyname function retrieves host information corresponding to a host name from a host database.
Note The gethostbyname function has been deprecated by the introduction of the getaddrinfo function. Developers creating Windows Sockets 2 applications are urged to use the getaddrinfo function instead of gethostbyname.
struct hostent FAR *gethostbyname(
const char FAR *name
);
Parameters
name
[in] Pointer to the null-terminated name of the host to resolve.
Return Values
If no error occurs, gethostbyname returns a pointer to the hostent structure described above. Otherwise, it returns a NULL pointer and a specific error number can be retrieved by calling WSAGetLastError.