HTTP access from a long running headless app
Hello
I have a requirement for an application that runs without head 24/7 and must sometimes make remote HTTP connections without user interaction.
Could you please tell me if this is possible thanks to an application without head and point me to the api correct?
Thank you
Ray
you don't know.
the api is the same as always, usually QNetworkAccessmanager etc.
Tags: BlackBerry Developers
Similar Questions
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SystemDialog in long running headless app
Hello
10.3.1 I have a use case where I need to display a popup when a condition is met. The app may not run at the time when the condition could be filled.
I looked at the following statement of the documentation
«Apps headless supports dialog boxes at a later version of the SDK or API 10.3 level native BlackBerry 10.» Single system dialogs, such as SystemDialog, are supported. »
on the page
In this case, I modified the existing sample to take advantage of the SystemDialog but I don't see the dialog box when I installed the app (part of the user interface) since the outbreak in the part of the user interface for the headless is as follows. Any ideas?
application.headless
Reminder service
ReminderService
bb.action.system.STARTED
application/vnd.blackberry.system.event.STARTED
com.example.ReminderService.RESET
*
Here's the part without the project: service.hpp
#ifndef SERVICE_H_
#define SERVICE_H_#include
#include
#includebb {} namespace
Application class;
namespace System {}
class InvokeManager;
class InvokeRequest;
}
}Class service: public QObject
{
Q_OBJECT
public:
Service();
Virtual ~ Service() {}public slots:
void onDialogFinished (bb::system:
ystemUiResult::Type type);private slots:
void handleInvoke (const bb::system:InvokeRequest &);)
void onTimeout().private:
void triggerNotification();BB::System:InvokeManager * m_invokeManager;
BB::System:ystemDialog * m_dialog;
};#endif / * SERVICE_H_ * /.
Here is the service.cpp
#include "service.hpp".
#include
#include
#include
#include
#include
#include
using namespace bb::system;
Service:
ervice():QObject(),
m_invokeManager (new InvokeManager (this))
{
m_invokeManager-> connect (m_invokeManager, SIGNAL (called (const bb::system:InvokeRequest &)),)
This, SLOT (handleInvoke (const bb::system:InvokeRequest &)));))
m_dialog = new SystemDialog ("Save as", "Discard changes", "Cancel");
m_dialog-> setTitle ("save changes");
m_dialog-> setBody ("save your changes and close the document?");
m_dialog-> setEmoticonsEnabled (true);
m_dialog-> setModality (SystemUiModality::Global);
Connect the finished() signal to the onDialogFinished() location.
The slot will check the SystemUiResult to see which
button has been operated.
Boolean success = connect (m_dialog,
SIGNAL (finished (bb::system:
ystemUiResult::Type)).This,
SLOT (onDialogFinished (bb::system:
ystemUiResult::Type)));))If (success) {}
Signal has been connected successfully.
Now, display the dialog box in your user interface.
onTimeout();
} else {}
Unable to connect to report.
This is not normal in most cases and can be a critic
situation for your application! Make sure you know exactly why
What happened. Add code to retrieve from the
interruption of the connection under this line.
m_dialog-> deleteLater();
}
}
cancel the Service:
nDialogFinished (bb::system:ystemUiResult::Type type){
If (type is SystemUiResult::ConfirmButtonSelection)
{
qDebug()< "dialog="">
The user accepts the dialogue.
}
else {}
qDebug()< "dialog="">
The user rejected the dialog box.
m_dialog-> deleteLater();
}
}
void Service::handleInvoke (const bb::system:InvokeRequest & request)
{
If (request.action () .compare ("com.example.ReminderService.RESET") == 0) {}
triggerNotification();
}
}
Sub Service: triggerNotification()
{
Time-out is to give time for the user interface to minimize
QTimer::singleShot (2000, this, SLOT (onTimeout (()));
}
cancel the Service:
nTimeout(){
m_dialog-> show();
}
Join the discussion at
http://supportforums.BlackBerry.com/T5/native-development/SystemDialog-in-headless-part-in-10-3/TD-p... -
Long-term headless app work: QTcpSocket receive do not
We have an app without long-term head that uses sockets for IPC.
Headless part contains a QTcpServer, the user interface of the QTcpSocket.
the code without a head:
server = new QTcpServer(this); bool ok = connect(server, SIGNAL(newConnection()), this, SLOT(onNewConnection()));server->listen(QHostAddress::LocalHost, m_port);
user interface code:
bool stateOk = connect(clientSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), this, SLOT(onStateChanged(QAbstractSocket::SocketState))); if (!clientSocket->isOpen()) { clientSocket->connectToHost(QHostAddress::LocalHost, m_port); bool conOk = connect(clientSocket, SIGNAL(connected()), this, SLOT(connected())); bool disconOk = connect(clientSocket, SIGNAL(disconnected()), this, SLOT(disconnected())); bool readReadOk = connect(clientSocket, SIGNAL(readyRead()), this, SLOT(commandReceived())); bool errorOk = connect(clientSocket, SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(error(QAbstractSocket::SocketError))); Q_ASSERT(errorOk); qDebug() << "connected to server socket"; }output debug shows headless headless app is running constantly, the signal is properly connected, the socket for the server returns isListening() to true.
debug output of the user interface shows that all signals are correctly connected, and onStateChanged goes from HostLookupState to ConnectingState and finally to ConnectedState
At this point, I'd wait the server socket to pull the signal of newConnection, but alas, it isn't.
I generate and run the xandos example and it works correctly, but it does not long-term use and has the server in the user interface, while the part without head connects.
I suspect that the app without head doesn't have an event loopand QTcpServer documentation states:
Although QTcpServer is mostly designed for use with an event loop,it's possible to use it without one.In that case, you must use waitForNewConnection(),which blocks until either a connection is available or a timeout expires.
Now I wonder:
The long March without head app has an event loop?
If this is not the case, how best to use the blocking call without disabling the rest of its features? A thread?
Write that post little got me on the right track already, a problem merging caused the socket to the server must be started before you call the constructor of the Application (which provides the event loop).
Now the server is running, receive a few orders, then she stops unexpectedly, the fires of the user interface
QAbstractSocket::RemoteHostClosedError changes the State of ClosingState and UnconnectedState
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Moved here...
Hello
Since you have tried all possible troubleshooting steps which were necessary for the issue to resolved and still the problem persists, I recommend you post the question in the Technet Forums.
The question you posted would be better suited in the TechNet Forums. I would recommend posting your query in the link below.
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HTTP requests from 3rd party app on BlackBerry consumer
We have an application that performs a lot of (not through the browser) HTTP requests. Our internal testing is done on devices activated per BES. I've heard reports occasional external users that communications is a failure and I guess that carriers are restricting certain types of HTTP requests. (Also, I see that Viigo has download separately for consumer and Enterprise devices).
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See you soon,.
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Please see this link for a list of the available routes to make a connection over HTTP.
What - in different ways to establish an HTTP connection or socket
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=================================
Admin # sh ver
Deploying applications engine Cisco OS version: 1.2
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ADE-OS System Architecture: i386Copyright (c) 2005-2009 by Cisco Systems, Inc.
All rights reserved.
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-----------------------------
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Jatin kone
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Your subscription to cloud shows correctly on your account page?
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Adobe contact information - http://helpx.adobe.com/contact.html
Chat/phone: Mon - Fri 05:00-19:00 (US Pacific Time)<=== note="" days="" and="">
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