iphone获取本机IP
-(NSString *)getAddress {
char iphone_ip[255];
strcpy(iphone_ip,"127.0.0.1"); // if everything fails
NSHost* myhost =[NSHost currentHost];
if (myhost)
{
NSString *ad = [myhost address];
if (ad)
strcpy(iphone_ip,[ad cStringUsingEncoding:NSASCIIStringEncoding]);
}
return [NSString stringWithFormat:@"%s",iphone_ip];
}