[omniORB] Cannot get the name of this host. - gethostname() fails ?

[Martin B.]

Hi there!

We have a Windows XP PC where we have installed omniORB 4.1.2 and when 
we try to start omniNames, the following message is printed out and then 
omninames terminates: (that's what they told me on the phone, so it may 
not be accurate char for char)
<date>:
Error: Cannot get the name of this host.

Searching for "Cannot get the name of this host." in the omniORB sources 
it seems this is printed when gethostname() fails (tcpEndpoint.cc:565).

I'm at a loss why this may fail. I have sent my colleague a short 
testprogram and when he runs that on the machine, it correctly reports 
the hostname. (Find the testprg below for reference)

We've set traceLevel:40 in the registry but he told me that there are 
*no* trace loggings output by omninames, so maybe we didn't get that 
right over the phone.

ANY ideas what might be broken here?


cheers,
Martin


## test code for gethostname() ##
-- main.cpp --
#include <winsock.h>

#define OMNIORB_HOSTNAME_MAX 512

int main()
{
	WSADATA WSAData;
	if( WSAStartup(MAKEWORD(1, 0), &WSAData) != 0) {
		printf("WSA Startup failed!\n");
		return 1;
	}
	
	char self[OMNIORB_HOSTNAME_MAX];
	if (gethostname(&self[0],OMNIORB_HOSTNAME_MAX) == SOCKET_ERROR){
		int err = ::WSAGetLastError();
		printf("gethostname() failed! errorcode == %d\n", err);
	}
	else {
		printf("gethostname() == %s\n", self);
	}

	WSACleanup();
	return 0;
}