AeroGear Crypto Java 0.1.2 released
by Bruno Oliveira
Good morning, just to let you know we released today the bits for digital signatures and some bug fixes.
Have a happy new year sweet hearts.
--
abstractj
2 years, 7 months
AeroGear WebPush Java Client
by Idel Pivnitskiy
Hi all!
I've just implemented a lightweight java client for receiving push messages
from AeroGear WebPush Server [1]. It is easy to use and fully async!
A few words about decision to use Jetty as a HTTP/2 client:
Currently there are only 3 Java libraries, which implement client side of
HTTP/2 protocol [2]: Netty, Jetty and OkHttp. I tried all of them:
- First of all I tried to use OkHttp. This is a lightweight http client
for Android and other Java apps. But currently this library supports HTTP/2
protocol only via old HTTP/1.1 API. It works well for simple
request-response, but its client API does not allow to use HTTP/2 features,
like Server Push Frames. I looked at GRPC [3], because Googlers use OkHttp
for HTTP/2 transport. But they don't use public API, they use only inner
classes to handle frames and built their own logic atop this classes. It
would be too complicated for our purposes.
- Secondary, I tried to refactor our WebPush console to a client
library. But this way is complicated too. netty-codec-http2 does not
provide a client API, it is only codec, low level protocol implementation.
- Now I use jetty-http2-client. It is easy to configure and use, fast
and async. Jetty provides a user friendly API to handle HTTP/2 streams and
get PUSH_PROMISE frames.
For more information, look at my commit history.
In the future, if there will be more lightweight alternatives than Jetty
(for example, new version of OkHttp or Java 9 API), I will rewrite the
transport layer of my library.
Here is an example, how to use my library [4].
[1] https://github.com/idelpivnitskiy/aerogear-webpush-java-client
[2] https://github.com/http2/http2-spec/wiki/Implementations
[3] https://github.com/grpc/grpc-java/tree/master/okhttp
[4]
https://github.com/idelpivnitskiy/aerogear-webpush-java-client/blob/maste...
Best regards,
Idel Pivnitskiy
--
E-mail: Idel.Pivnitskiy(a)gmail.com
Twitter: @idelpivnitskiy <https://twitter.com/idelpivnitskiy>
GitHub: @idelpivnitskiy <https://github.com/idelpivnitskiy>
8 years, 9 months
GCM Topics in UPS
by Summers Pittman
So I've got a few ideas for how to implement this, but I hope some people
more experienced with the platform can give some feedback before.
Quick Background:
In UPS right now we have a concept of categories. A single UPS message can
be broadcast to a bunch of devices which are subscribed to this category.
Google now supports this for GCM on Chrome, iOS, and Android so UPS can
send a single message to GCM and GCM will broadcast that to up to a million
devices.
End Quick Background
So first, how do we switch between sending a message to each device in a
category to sending a topic message to GCM?
In TokenLoader.java#L113 we are using the clientInstallationService to
build a string of deviceTokens based on the variant and message criteria.
Is there any reason we can't create a "topicToken" which will be recognized
later by GCMPushNotificationSender? Another benefit to making this change
here is that if we have over a million subscribers to the category we can
just default to the default messaging.
There is also an open issue of whether or not we will update the clients to
filter based on what category a message was sent to. To do this we will
have to include the category information in the message when we send it to
devices going forward. In GCM a topic message includes this information.
This means that if we have over a million subscriptions in the topic we
will need to fall back to using the category information anyway.
Continuing on from the thread of falling back, it is possible for a topic
message to fail to send because there are too many subscribers. How would
UPS handle regenerating the messages as deviceToken instead of topicToken
messages?
Of course if someone has a better idea than "topicTokens" I'm all ears.
8 years, 9 months
Re: [aerogear-dev] Generated tokens stay the same?
by Philip Gillißen
Hi Erik!
Thanks for replying so fast!
I checked the code again on another machine and I saw that I used the milestone 1 of 1.0.0.
If I use the final version 1.0.0, the behaviour is exactly as you described
9 years, 2 months
Generated tokens stay the same?
by Philip Gillißen
Dear list,
I recently discovered your library for TOTP and would like to include it in one of my applications.
Unfortunately, I discovered a situation where the library does not do the things I expected. I want to ask if this is me using the lib in a wrong way.
If I call generator.now() repeatedly, the token does not change, even if the timebox (30 seconds) is already finished.
Here's a small demo code to show my problem:
public static void main(String[] args) {
String secret = Base32.random();
Totp generator = new Totp(secret);
for (int i = 0; i < 10; i++) {
String tmpNow = generator.now();
System.out.println(tmpNow);
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
The printed out token is always the same. It only changes if I reinitialize the generator (Totp) with
generator = new Totp(secret); each time I want to generate a token.
My question is: Is this the desired behavior to only generate new tokens when the generator is newly created?
Do I have to call any other method to check if a new token would be now applicable?
Thanks in advance for your help!
Kind regards,
Philip
---
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9 years, 2 months
UPS using JMS update
by Lukáš Fryč
Hi guys,
so as outlined in previous thread [1], I have prototyped a JMS batching
approach for push message delivery.
We've discussed the approach with Matthias, Mirek Novak and Ondrej
Chaloupka (EAP QE & JMS/JTA experts, thank you guys!) and these documents
describes a concept that we have came with:
Diagram:
https://docs.google.com/a/fryc.eu/drawings/d/13IsJWPSJNYXtst-UVxQYmzH36C_...
Text Doc:
https://docs.google.com/document/d/1X65P_U9O62Z5JZhKi9ZvBuZU1OrL4pNHNddlz...
Implementation-wise, I've so far prototyped the messaging part (split
SenderService functionality to two subsequent queues with MDBs as shown on
diagram),
but that's just a start, since we must configure it appropriately for
efficiency (queue configuration and batch sizes) and verify that
configuration works as expected,
the prototype lives on a branch (unpolished, to be squashed later):
https://github.com/lfryc/aerogear-unifiedpush-server/tree/jms-batching
Off course, you can play with it already. :-)
Apart from the new requirement of using Java EE full profile (JMS), the
prototype leverages implementation-specific configurations and APIs:
- org.hibernate.Query for token streaming / batch fetching
- HornetQ configurations of queue size, blocking behavior and message
de-duplication
That pretty much binds us to WildFly/EAP - we can tweak it to run on any
compliant app server, but without specific configurations it won't work
properly.
Once configured and functionally tested (that can even wait for Beta2 I
guess),
we can cooperate with Mobile QE on testing (Stefan, Adam), their test suite
contains mocks of APNS/GCM against which we can load test.
Cheers!
~ Lukas
[1]
http://aerogear-dev.1069024.n5.nabble.com/aerogear-dev-UnifiedPush-new-re...
9 years, 2 months
Low activity on the mailing list?
by Vivek Pandey
Guys,
Off late I am observing that traffic to the mailing list has dried off. I am
just checking if everything is all right with the Aerogear project.
Vivek
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9 years, 2 months
