qi::Future<void> Session_SD::listenStandalone(const qi::Url &address)
{
if (_init)
throw std::runtime_error("Already initialised");
_init = true;
_server->addObject(1, _serviceBoundObject);
qiLogInfo() << "ServiceDirectory listener created on " << address.str();
qi::Future<void> f = _server->listen(address);
std::map<unsigned int, ServiceInfo>::iterator it =
_sdObject->connectedServices.find(qi::Message::Service_ServiceDirectory);
if (it != _sdObject->connectedServices.end())
{
it->second.setEndpoints(_server->endpoints());
return f;
}
ServiceInfo si;
si.setName("ServiceDirectory");
si.setServiceId(qi::Message::Service_ServiceDirectory);
si.setMachineId(qi::os::getMachineId());
si.setProcessId(qi::os::getpid());
si.setSessionId("0");
si.setEndpoints(_server->endpoints());
unsigned int regid = _sdObject->registerService(si);
(void)regid;
_sdObject->serviceReady(qi::Message::Service_ServiceDirectory);
//serviceDirectory must have id '1'
assert(regid == qi::Message::Service_ServiceDirectory);
_server->_server.endpointsChanged.connect(boost::bind(&Session_SD::updateServiceInfo, this));
return f;
}
int main_server()
{
qi::Session sd;
if (sd.listenStandalone(serverUrl).hasError()) {
std::cerr << "Service directory can't listen on " << serverUrl.str() << "." << std::endl;
return 1;
}
serverUrl = sd.endpoints()[0];
std::cout << "Service Directory ready on " << serverUrl.str() << std::endl;
qi::Session session;
qi::AnyObject obj = make_service();
session.connect(sd.endpoints()[0]);
qi::Url sessionUrl("tcp://0.0.0.0:0");
session.listen(sessionUrl);
session.registerService("serviceTest", obj);
std::cout << "serviceTest ready." << std::endl;
serverReady = true;
while (!clientDone)
qi::os::sleep(60);
return 0;
}
int main_gateway(const qi::Url& serverUrl)
{
qi::Gateway gate;
gate.attachToServiceDirectory(serverUrl);
gateUrl = "tcp://0.0.0.0:0";
gate.listen(gateUrl);
gateUrl = gate.endpoints()[0];
std::cout << "Gateway listening on " << gateUrl.str() << std::endl;
while (!clientDone)
qi::os::sleep(60);
return 0;
}
void SessionPrivate::addSdSocketToCache(Future<void> f, const qi::Url& url,
qi::Promise<void> p)
{
qiLogDebug() << "addSocketToCache processing";
if (f.hasError())
{
qiLogDebug() << "addSdSocketToCache: connect reported failure";
_serviceHandler.removeService("ServiceDirectory");
p.setError(f.error());
return;
}
// Allow the SD process to use the existing socket to talk to our services
_serverObject.registerSocket(_sdClient.socket());
/* Allow reusing the SD socket for communicating with services.
* To do this, we must add it to our socket cache, and for this we need
* to know the sd machineId
*/
std::string mid;
try
{
mid = _sdClient.machineId();
}
catch (const std::exception& e)
{ // Provide a nice message for backward compatibility
qiLogVerbose() << e.what();
qiLogWarning() << "Failed to obtain machineId, connection to service directory will not be reused for other services.";
p.setValue(0);
return;
}
TransportSocketPtr s = _sdClient.socket();
qiLogVerbose() << "Inserting sd to cache for " << mid <<" " << url.str() << std::endl;
_socketsCache.insert(mid, s->remoteEndpoint(), s);
p.setValue(0);
}
qi::FutureSync<void> Session::listen(const qi::Url &address)
{
qiLogInfo() << "Session listener created on " << address.str();
return _p->_serverObject.listen(address);
}
//we ensure in that function that connect to all events are already setup when we said we are connect.
//that way we can't be connected without being fully ready.
qi::FutureSync<void> ServiceDirectoryClient::connect(const qi::Url &serviceDirectoryURL) {
if (isConnected()) {
const char* s = "Session is already connected";
qiLogInfo() << s;
return qi::makeFutureError<void>(s);
}
_sdSocket = qi::makeTransportSocket(serviceDirectoryURL.protocol());
if (!_sdSocket)
return qi::makeFutureError<void>(std::string("unrecognized protocol '") + serviceDirectoryURL.protocol() + "' in url '" + serviceDirectoryURL.str() + "'");
_sdSocketDisconnectedSignalLink = _sdSocket->disconnected.connect(&ServiceDirectoryClient::onSocketDisconnected, this, _1);
_remoteObject.setTransportSocket(_sdSocket);
qi::Promise<void> promise;
qi::Future<void> fut = _sdSocket->connect(serviceDirectoryURL);
fut.connect(&ServiceDirectoryClient::onSocketConnected, this, _1, promise);
return promise.future();
}