I am developing a chat application where I am using the Ping/Pong protocol between client and server (XEP-0199). I tried to reply with the two methods decribed, the error and the get and didn't succeded till now. I am always getting disconnected by the server for reasons I dont know.
My code is writen in the parseIq() function, when I receive an iq with the next tag "ping", I send the pong, but that is not working.
Please help, thanks
Related
This is linked to question: Suave stops responding with "Socket failed to accept a client" error
When I first started to use Suave, I was taking commands from a 3rd party service pushing messages and I would have an out of socket situation.
There is now more understanding of the problem:
I am receiving messages that are posted to the SNS service on AWS (it's just a queue). SNS will forward me each message it receives through a HTTP connection, as a POST message.
If I reply with Ok, I will run out of sockets. So this means that Suave is trying to keep the connection open and AWS is somehow initiating a new connection every time.
If I reply with CLOSE, the AWS' delivery starts to become odd and messages get delivered in batches followed by periods of nothing.
Since AWS will not change their system for me, I'm wondering if I can reply Ok but then somehow close the connection in Suave to not run out of sockets. Is it possible?
Or, is there a better way to handle this?
I have set up a chat server with Ejabberd, It is working fine. Messages are getting sent from one user to another user. Problem is that when the receiving user is offline, Sender messages should get stored and get delivered to receiver when he comes back to online. But offline messages are not getting delivered. I have not changed anything in configuration file because it looks already configured for the offline storage and offline message delivery. Do I need to make any other changes apart from the below lines?
ejabberd.cfg:
{access, max_user_offline_messages, [{5000, admin}, {100, all}]}.
{mod_offline, [{access_max_user_messages, max_user_offline_messages}]}
Please update your ejabberd from 2.1.10 to 16.10, as you using the older version certain func. may not work as expected.
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.
im stuck in a situation
SITUATION : I have a situation wherein i answer some questions and get points according to the answered questions. if my points become say 10 i win some gift using a QRCode. (there is a qr code that is generated to the user, and when the qrcode is scanned from someother device which has a scanner app or any other scanner, it gives a link to that online store. This link can be opened from any browser.) The gift is accessed from some online store by scanning the QRCode which gives a link to that online store with some unique id and when the gift is accessed/taken the server is notified that the gift is accessed/taken from that online gift store and the QRCode status is updated to invalid on the server database. Now once the server gets the notification that the gift is being accessed/taken, the server should immediately notify my iphone app that the gift is received so that i can immediately show another congratulations image or something.
POSSIBLE SOLUTION : i thought of one possible solution wherein i check upon the qrcode access status change on the server every say 60 secs and display the image accordingly. I dont know how efficient/correct this way would be though.
ISSUE : but before i refuge to the above solution, i want to know, can this notification happen from the server without my app trying to call or fetch the update from the server? I mean, my app comes into the picture only after the server sends a notification in the form of a msg or some xml or something..
Any help would be deeply appreciated.
You can open a connection to your server using CFReadStream, add the stream to your runloop and set up a callback function. Whenever the server writes data to the open connection, your callback will fire and you can then read from the stream to get the data the server sent
More info here: https://developer.apple.com/library/mac/#documentation/Networking/Conceptual/CFNetwork/CFStreamTasks/CFStreamTasks.html
You could try to check Push Notifications. But it's impossible to determine on server side if notification was received on client side or not (if you won't implement it by yourself, but you'll probably wont cover all the possible situations, like when your app is not launched and notification came).
you can try to use XMPP protocol, which is most commonly used for chats/mails, where the changes in the server is notified to the clients.
Apple Push Notification Service is meant to solve these types of situations.
Hope it helps:
Apple Docs: http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/ApplePushService/ApplePushService.html#//apple_ref/doc/uid/TP40008194-CH100-SW9
There is a nice tutorial: http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12
Video tutorial: http://www.youtube.com/watch?v=cKV5csbueHA&feature=relmfu
The view is not getting painted in BB device when the following steps are done:
First time I run the app, it works fine.
Close the application (System.exit(0))
Re-open the appllication, the device hangs.
I use the following stuffs in my app:
http connection
Storage
NOTE: The http request is sent and the response is also received. But the device hangs and view is not getting painted.
Kindly help me in this regard, please.
I suggest you switch to Codename One since Oracle ended support for blackberries.