URL Registration & Reservation and Casablanca C++ REST

Question

Hi,
I really need help. I have an application that uses Casablanca C++ REST to create a web server to communicate over a port on localhost. My problem is that it works well when using 127.0.0.1 but requires 'Run as Admin'. 
To get round this issue, I need to use 'localhost'. However, my application no longer works when I use 'localhost' and will not talk to the client app.
I understand I need to reserve the url on Windows which I have done using netsh commands, but I also need to register the url in the application so a listen list is created. I think I have achieved this with the code below, although I haven't verified it,
it does compile and run without throwing any exceptions.
My question is: now that I have added my url to the Windows group to allow the application to listen, how do I pass this (handle?) to the Casablanca code that separately creates a http_listener of it's own. My Casablanca code is based on the BlackJack
Dealer sample code.
Edit: I have discovered that my application is actually working and it's the client application that for some reason does not work on localhost. I have left this post up in case the code is of use to anyone.
Many thanks,
Andy
HTTPAPI_VERSION apiVersion = HTTPAPI_VERSION_2;
auto result = HttpInitialize(apiVersion, HTTP_INITIALIZE_SERVER, 0);
if (NO_ERROR != result) return 0;
std::cout << "HTTP initialized." << std::endl;
HANDLE reqQueue = 0;
result = HttpCreateRequestQueue(apiVersion, NULL, NULL, 0, &reqQueue);
if (NO_ERROR != result)
cleanup1();
return 0;
std::cout << "HTTP request queue created." << std::endl;
HTTP_SERVER_SESSION_ID serverSessionId = 0;
result = HttpCreateServerSession(apiVersion, &serverSessionId, 0);
if (NO_ERROR != result)
cleanup2(reqQueue);
cleanup1();
return 0;
std::cout << "HTTP server session created." << std::endl;
HTTP_URL_GROUP_ID urlGroupId = 0;
result = HttpCreateUrlGroup(serverSessionId, &urlGroupId, 0);
if (NO_ERROR != result)
cleanup3(serverSessionId);
cleanup2(reqQueue);
cleanup1();
return 0;
std::cout << "Url group created." << std::endl;
result = HttpAddUrlToUrlGroup(urlGroupId, L"http://localhost:27016/", NULL, 0);
if (NO_ERROR != result)
cleanup4(urlGroupId);
cleanup3(serverSessionId);
cleanup2(reqQueue);
cleanup1();
return 0;
std::cout << "Url added to group." << std::endl;
class BlackJackDealer
public:
BlackJackDealer() {}
BlackJackDealer(utility::string_t url);
pplx::task<void> open() { return m_listener.open(); }
pplx::task<void> close() { return m_listener.close(); }
private:
void handle_get(http_request message);
http_listener m_listener;
void on_initialize(const string_t& address)
// Build our listener's URI from the configured address and the hard-coded path
UINT16 ret;
uri_builder uri(address);
auto addr = uri.to_uri().to_string();
g_httpDealer = std::unique_ptr<BlackJackDealer>(new BlackJackDealer(addr));
g_httpDealer->open().wait();
ucout << utility::string_t(U("Listening for requests at: ")) << addr << std::endl;
BlackJackDealer::BlackJackDealer(utility::string_t url) : m_listener(url)
m_listener.support(methods::GET, std::bind(&BlackJackDealer::handle_get, this, std::placeholders::_1));

Answer 1

Hello andy,
Since this issue is related with VC++, i suggest that you could post it to the VC++ forum:
https://social.msdn.microsoft.com/Forums/vstudio/en-US/home?forum=vcgeneral
I notice that you are using the Casablanca C++ REST API, you coudl also ask it at:
https://casablanca.codeplex.com/
Regards.
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