/// <summary>
/// Initializes a new instance of the ChatSessionObject class.
/// </summary>
/// <param name="bus">The BusAttachment to be associated with.</param>
/// <param name="path">The path for the BusObject.</param>
/// <param name="host">The instance of the MainPage which handles the UI for this
/// application.</param>
public ChatSessionObject(BusAttachment bus, string path, MainPage host)
{
try
{
this.hostPage = host;
this.busObject = new BusObject(bus, path, false);
/* Add the interface to this object */
InterfaceDescription[] ifaceArr = new InterfaceDescription[1];
bus.CreateInterface(ChatServiceInterfaceName, ifaceArr, false);
ifaceArr[0].AddSignal("Chat", "s", "str", 0, string.Empty);
ifaceArr[0].Activate();
InterfaceDescription chatIfc = bus.GetInterface(ChatServiceInterfaceName);
this.busObject.AddInterface(chatIfc);
this.chatSignalReceiver = new MessageReceiver(bus);
this.chatSignalReceiver.SignalHandler += new MessageReceiverSignalHandler(this.ChatSignalHandler);
this.chatSignalMember = chatIfc.GetMember("Chat");
bus.RegisterSignalHandler(this.chatSignalReceiver, this.chatSignalMember, path);
}
catch (System.Exception ex)
{
QStatus errCode = AllJoyn.AllJoynException.GetErrorCode(ex.HResult);
string errMsg = AllJoyn.AllJoynException.GetErrorMessage(ex.HResult);
this.hostPage.DisplayStatus("Create ChatSessionObject Error : " + errMsg);
}
}
/// <summary>
/// Connects to the bus, finds the service and calls the 'cat' with the two
/// arguments "Hello " and "World!"
/// </summary>
/// <param name="sender">UI control which signaled the click event</param>
/// <param name="e">arguments associated with the click event</param>
private void Button_RunClick(object sender, RoutedEventArgs e)
{
if (!runningClient)
{
Task task = new Task(async() =>
{
try
{
runningClient = true;
busAtt = new BusAttachment("ClientApp", true, 4);
this.OutputLine("BusAttachment Created.");
BasicClientBusListener basicClientBusListener = new BasicClientBusListener(busAtt, foundNameEvent);
busAtt.RegisterBusListener(basicClientBusListener);
this.OutputLine("BusListener Registered.");
/* Create and register the bundled daemon. The client process connects to daemon over tcp connection */
busAtt.Start();
await busAtt.ConnectAsync(BasicClientGlobals.ConnectSpec);
this.OutputLine("Bundled Daemon Registered.");
this.OutputLine("BusAttachment Connected to " + BasicClientGlobals.ConnectSpec + ".");
busAtt.FindAdvertisedName(BasicClientGlobals.WellKnownServiceName);
foundNameEvent.WaitOne();
/* Configure session properties and request a session with device with wellKnownName */
SessionOpts sessionOpts = new SessionOpts(
BasicClientGlobals.SessionProps.TrType,
BasicClientGlobals.SessionProps.IsMultiPoint,
BasicClientGlobals.SessionProps.PrType,
BasicClientGlobals.SessionProps.TmType);
SessionOpts[] sOptsOut = new SessionOpts[1];
JoinSessionResult joinResults = await busAtt.JoinSessionAsync(
BasicClientGlobals.WellKnownServiceName,
BasicClientGlobals.SessionProps.SessionPort,
basicClientBusListener,
sessionOpts,
sOptsOut,
null);
QStatus status = joinResults.Status;
if (QStatus.ER_OK != status)
{
this.OutputLine("Joining a session with the Service was unsuccessful.");
}
else
{
this.OutputLine("Join Session was successful (sessionId=" + joinResults.SessionId + ").");
}
// Create the proxy for the service interface by introspecting the service bus object
ProxyBusObject proxyBusObject = new ProxyBusObject(busAtt, BasicClientGlobals.WellKnownServiceName, BasicClientGlobals.ServicePath, 0);
if (QStatus.ER_OK == status)
{
IntrospectRemoteObjectResult introResult = await proxyBusObject.IntrospectRemoteObjectAsync(null);
status = introResult.Status;
if (QStatus.ER_OK != status)
{
this.OutputLine("Introspection of the service bus object failed.");
}
else
{
this.OutputLine("Introspection of the service bus object was successful.");
}
}
if (QStatus.ER_OK == status)
{
// Call 'cat' method with the two string to be concatenated ("Hello" and " World!")
MsgArg[] catMe = new MsgArg[2];
catMe[0] = new MsgArg("s", new object[] { "Hello" });
catMe[1] = new MsgArg("s", new object[] { " World!" });
InterfaceDescription interfaceDescription = proxyBusObject.GetInterface(BasicClientGlobals.InterfaceName);
InterfaceMember interfaceMember = interfaceDescription.GetMember("cat");
this.OutputLine("Calling the 'cat' method of the service with args 'Hello' and ' World!'");
MethodCallResult callResults = await proxyBusObject.MethodCallAsync(interfaceMember, catMe, null, 100000, 0);
Message msg = callResults.Message;
if (msg.Type == AllJoynMessageType.MESSAGE_METHOD_RET)
{
string strRet = msg.GetArg(0).Value as string;
this.OutputLine("Sender '" + msg.Sender + "' returned the value '" + strRet + "'");
}
else
{
this.OutputLine("The 'cat' method call produced errors of type: " + msg.Type.ToString());
}
}
TearDown();
}
catch (Exception ex)
{
QStatus s = AllJoynException.GetErrorCode(ex.HResult);
}
});
task.Start();
}
}
