I already implemented the first 4 steps of the push initiator for blackberry
Send a push request
BlackBerry service returns a response
BlackBerry service pushes data to an assigned, specific port on device
Device returns response to BlackBerry service
Now I am working on the following two steps but nothing has happened yet:
5. BlackBerry service forwards acknowledgement to content provider
6. Read notification is returned to the BlackBerry service
Does anyone know how to implement that? I provided a domain when filling out the request but how do I achieve connection between me and the blackberry servers and how long do I have to wait for their response?
Actually your content provider send message to blackberry server and also specified the pin number of the device to which content provider want to send the message.
Your device automatically register with bb server if you have bb data service.
Your application is listening in the background on a particular port and your application also has particular app id that is provided by the rim.
So when content provider send message to bb server it also specify the app id and bb server has info about the port corresponding to this app id.and send message to the port of device whose pin is specified by the content provider.
Related
Please check the attached image.
Thingsboard:Send data via HTTP
As Device 1 & 2 send their respective status messages to Pairing Device 1. This data contains respective device IDs.
Pairing Device receives this message and send it to Thingsboard server via HTTP.
-- Currently requires to include access token of Pairing device in the HTTP url. Is that necessary?
Pairing device which is already created in Thingsabord should identify the device (Device 1 or 2) based on the device ID in the received message and update the attributes/telemetry data of respective device.
How to achieve 3rd point in the Thingsboard? What things needs to be done here to achieve it?
I am facing an issue with the presence status, following the documentation and XMPPframework example code. I have written a chat application.
Problem : When the user 1 & 2 are online I get the status successfully and they can chat with each other. However when the user 2 goes physically offline via (Wifi OFF / 3G Off) User 1 is not getting the offline status from XMPP and hence what ever messages are sent from that instant of time are lost when the user 2 comes online.
It seems since the user 2 is not notified or stored as offline in XMPP and hence its not storing the offline messages to push back to user 2 when it comes online.
I have tried to resolve this by explicitly writing a [goOffline] call to XMPP, however the call is shown in 'SEND log' for 'user 2' but not received in 'RECV log' in user 1 from XMPP, due to which the message are lost in between.
Also tried with other sources replies.
Set status for presence available and send XMPP
priority changed with values non-negative
XMPPArchiving work but this is not what I wanted.
Server side Mod_zero push enables but get only first message push notification sometimes.
Setting limit on ejabberd.cfg file for users and offline message limit.
request for offline message pull.
Can anyone help me with this?
This is very typical situation where client losses network but server can't detect that it is offline.
To detect status of each client, server need to send PING packets to every client and wait for response.
If client responds then fine otherwise server will mark that client as offline and every other online client will be informed automatically.
Here is PING Module implementation for ejabberd XMPP Server (hope you are using ejabberd server):
mod_ping:
send_pings: true
ping_interval: 10
timeout_action: kill
ping_ack_timeout: 10
This has to be written in ejabberd.yml configuration file.
At client side also we need to enable ping module to respond to server pings as:
private var xmppPing: XMPPPing?
xmppPing = XMPPPing()
xmppPing!.activate(xmppStream!)
This code has to be written while we setupStream() for iOS.
For detailed info, please go through mod_ping documentations.
Sounds like your problem is at server level. The server thinks that the user is online so it sends the message but nobody gets it. This does not really have a simple solution.
1.
The best solution would be delivery receipts. Where basically when the message is sent to your client, your client returns a confirmation of delivery receipt. If the server does not get that receipt it would resend the message every n time. Depending on your XMPP server you might find a already made solution, of not you would have to roll out your own.
2.
A possible hack would be to have your server always store and deliver last 10 messages and then at client side you discard repeated... This also depends on your server implementation. XMPP MUC and PubSub have resources along these lines.
For a long term scalable solution, you'll need to deal with this both at server and client level.
i went through this question
Lost messages over XMPP on device disconnected
but there is no answer.
When a connection is lost due to some network issue then the server is not able to recognize it and keeps on sending messages to disconnected receiver which are permanently lost.
I have a workaround in which i ping the client from server and when the client gets disconnected server is able to recognize it after 10 sec and save further messages in queue preventing them from being lost.
my question is can 100% fail save message delivery be achieved by using some other way i know psi and many other xmpp client are doing it.
on ios side i am using xmppframework
One way is to employ the Advanced Message Processing (AMP) on your server; another one is to employ the Message Delivery Receipts on your clients.
The former one requires an AMP-enabled server implementation and the initiating client has to be able to tell the server what kind of delivery status reports it wants (it wants an error to be returned if the delivery is not possible). Note that this is not bullet-proof anyway as there is a window between the moment the target client losts its connectivity with the server and the moment the TCP stack on the server's machine detects this and tells the server about it: during this window, everything sent to the client is considered by the server to be sent okay because there's no concept of message boundaries in the TCP layer and hence if the server process managed to stuff a message stanza's XML into the system buffers of its TCP connection, it considers that stanza to be sent—there's no way for it to know which bits of its stream did not get to the receiver once the TCP stack says the connection is lost.
The latter one is bullet-proof as the clients rely on explicit notifications about message reception. This does increase chattiness though. In return, no server support for this feature is required—it's implemented solely in the clients.
go with XEP-0198 and enjoy...
http://xmpp.org/extensions/xep-0198.html
For a XMPP client I'm working on, the following mechanism is used:
Add Reachability to the project, to detect quickly when the phone is having connectivity problems.
Use a modified version of XEP-0198, adding a confirmation sent by the server. So, the client sends a message, the server confirms with a receipt. Later on, the receiving user will also confirm with a receipt. For each message you send, you get two confirmations, one from the server, one from the client. This requires modifications on the server of course.
When the app is not connected to the XMPP server, messages are queued.
When the app is logged in again to the XMPP server, the app takes all messages which were not confirmed by the server and sends them again.
For this to work, you have to locally store the messages in the app with three possible states: "Not sent", "Confirmed by server", "Confirmed by user"
I am looking to create a chat app so that two iphones/mobile can chat with each other.
Can someone please head me in the right direction ?
1. Should I try to connect two devices directly using HTTP or TCP
2. Or should the communication pass through a server i.e. one phone sends the message to the server and server then push the message to other phone ?
If you can tell me any libraries/api that I should use, that would be greatly helpful too.
Or should the communication pass through a server i.e. one phone sends the message to
the server and server then push the message to other phone ?
That's the usual approach. A server with a known address is easy to find; mobile phones that move from one network to another and frequently change their addresses are not. Also, you can keep a server running all the time, so that when one device sends a message, the server receives it and stores it until the other device becomes available. If you were to try to run your chat program on the phones all the time, you'd quickly deplete the batteries.
If I am writing a MIDlet, and if the device supports SMS push registration (i.e. supports WMA 1.1 spec), I will be able to send push messages to the application that is installed on the phone and is listening to SMS messages at the assigned port.
However, if I am writing a Blackberry application, can I still go ahead and use the procedure that applies to MIDP 2.0 devices. If so, can I specify static SMS push registration in JAD file, as we do for a MIDlet?
Would the appropriate JAD property be still specified as MIDlet-Push-1:{}?
Another question, that is not totally unrelated is- are there any bulk SMS providers that allow SMS bearers specify the destination ports that can be integrated with this kind of a solution?
Thanks
A regular blackberry application does not support the push registry. You'll have to keep a DatagramConnection open and listen for the incoming SMS messages that way.
DatagramConnection connection = (DatagramConnection)Connector.open("sms://:1234");
Datagram dgram = connection.newDatagram(connection.getMaximumLength());
connection.receive(dgram); // blocking call so this should be in a separate thread
String message = new String(dgram.getData());
where 1234 is the port you're listening on.
As to you're second question I'm not entirely sure, but I think mblox supports port directed SMS.
For the second question, if the bulk SMS service provider provides you with HTTP API which included the UDH field, you can send messages to application listening in that particular port