how can i dynamically get my machine ip address ?

[Marco M]

i need to get the ip of the machine my code is running on.. how can i program that ? thanx shakoosh

[David Crow]

Call gethostname() followed by gethostbyname().

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"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

[toxcct]

you can list all your IP Addresses by doing this :

struct hostent* infohost;
char HostName[256];
char** addrs;
char* Host;

gethostname(HostName, 255);
Host = HostName;
infohost = gethostbyname(HostName);
addrs = infohote -> h_addr_list;
while (*addrs) {
printf("IP : %s\n", inet_ntoa( *(struct in_addr *)* addrs));
addrs++;
}

don't forget to check errors. Your main IP Address while being in a TCP network is in general the first, but not necessarily...

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TOXCCT >>> GEII power

[RNEELY]

// GetMyManagedIP.cpp #include "stdafx.h" #using <mscorlib.dll> #using <System.Windows.Forms.dll> using namespace System; using namespace System::Windows::Forms; int _tmain(int argc, _TCHAR* argv[]) { String* hostName = SystemInformation::ComputerName; System::Net::IPHostEntry* hostEntry = System::Net::Dns::GetHostByName(hostName); Console::WriteLine(S"Host name : {0}", hostEntry->HostName); for (System::Int32 i = 0; i < hostEntry->AddressList->Length; ++i) { Console::WriteLine(hostEntry->AddressList->Item[i]); } return 0; } Sincerely, -Ron

[RNEELY]

Or, if you don't like console output: // GetMyManagedIP.cpp #include "stdafx.h" #using <mscorlib.dll> #using <System.Windows.Forms.dll> using namespace System; using namespace System::Windows::Forms; int _tmain(int argc, _TCHAR* argv[]) { #pragma push_macro("new") #undef new String* hostName = SystemInformation::ComputerName; System::Net::IPHostEntry* hostEntry = System::Net::Dns::GetHostByName(hostName); for (int i = 0; i < hostEntry->AddressList->Length; ++i) { Text::StringBuilder* sb = new Text::StringBuilder(); sb->Append(hostName); sb->AppendFormat(S" IP Address {0} = ", __box(i)); sb->Append(hostEntry->AddressList->Item[i]->ToString()); MessageBox::Show(sb->ToString()); } return 0; #pragma pop_macro("new") } Sincerely, -Ron