check disabling of dns caching in Android - android

My colleague have disabled dns caching in Android application. But we have to check whether we really disabled caching. Do you have any ideas how to check it?
We used the next commands to disable it:
System.setProperty("networkaddress.cache.ttl", "0");
Security.setProperty("networkaddress.cache.ttl", "0");
ps: this disabling is needed for automation tests.

Its working.
I've tested it connecting to a servers url with a dynamic IP.
Before it took 2 hours until it could resolve the changed IP. after adding your code it resolved the new IP imm

My guess is that Yaniv is seeing what Yaniv wants to see: If you grep the Android source code for networkaddress you can see that it only appears in some Apache Harmony test code. That is, it doesn't seem like Android uses the networkaddress.cache.ttl setting(s).

Android not support that way, change dns cache when android 4.0, can't change dns ttl
it is answer

Related

Equivalent of WifiEnterpriseConfig before Android OS 4.3

In my Android application, I let the user choose a Wifi connection for the device. Using WifiConfiguration, I am able to deal with WEP as well as WPA2-PSK networks. However, it appears WPA2-EAP requires one more field - username. Browsing the net, I came across a system class WifiEnterpriseConfig that seems promising. However, this API is available only for OS 4.3+. I am wondering if there is any other way to achieve saving EAP network config that would work for 4.1 and above. Any pointer is appreciated. Regards.
You can just copypaste source code of this class into your project, it should resolve your problem.

How to mention the localhost in android

I am trying to call the localhost in my android application. But unfortunately it is not possible i used several methods like emulator local host
http://10.0.2.2/android/dbconnection.php
and then my network ip address
http://192.168.1.xx/android/dbconnection.php
also
http://localhost:8080/android/dbconnection.php
but nothing is connected to my localhost. For this purpose i refer some stackoverflow answers that is also not working
If you are using the emulator,
http://10.0.2.2:8080/android/dbconnection.php
should be the way to go. If that fails as well, check for typos in the address (maybe it's dbConnection.php), take a look at your log cat and also check if you have declared full internet access in your manifest.
I am also facing the same problem when i worked on localhost. i referred some stackoverflow answer finally i got the solution create a new emulator it works fine in the new emulator.

Weinre does not find any target

Sorry for the newbie question, but I spent the whole day trying to figure out why the target list remains empty.
This is what I've done so far:
Launched the Weinre host, bounded to my desktop ip adress
(192.168.0.38)
Checked it on Chrome : the host is bounded to
192.68.0.38:8080
Checked that the device is able to access to 192.168.0.38:8080/target/target-script-min.js#anonymous
White-listed both 192.168.0.38:8080 and 192.168.0.38 in config.xml
Added the script call in the index.html
Still the target list remains empty when I launch the app on the device from ADT...
What should I do next?
Thanks!
___ EDIT
I tried the demo, and it's working!
So what makes the difference between calling the script from a demo file, or from the application?
Turns out for me, the problem was that the mobile device silently switched over to another Wi-Fi network (than the one my computer was on), thus rendering the Weinre JS Script unreachable from within the app.
It's different than the issue described above (since, for Yako, the example scripts were working fine), but thought it could help somebody someday.
My issue was that I kept trying to access a page anchor. Apparently that doesn't work too well so I have to load the page first with no anchor, then add the anchor separately.
Finally, it's working!
It seems I only had to wait a little bit after app initalization!??
For all of you who still have to use weinre and have the same problem, I just want to share my mistake:
I did not whitelist my IP-address in the config.xml
maybe some of you have the same mistake.

pcsc-lite and ccid on Android

Does anyone have experience porting pcsc-lite/ccid to Android? I don't need to access smart cards/readers from the application layer, just from the shell. So, as long as I can get the pcscd daemon to run, that's fine.
Do I have to also port libusb/libhal to Android since pcsc-lite requires either?
Thanks.
It has been done and it works, however not sure what Android version the current patch supports. Check the SEEK site and their mailing list for more information: https://seek-for-android.github.io/.

Installing the ADT Plugin for Eclipse

I am trying to install the ADT plugin for Eclipse. However, after I have went to "Install New Software..." and entered the plugin location https://dl-ssl.google.com/android/eclipse/, "Pending..." is displayed. It does not change to "Developer Tools" no matter how long I wait. (I have also tried "http://dl-ssl.google.com/android/eclipse/)
To get around this I tried downloading the current ADT Plugin zip file, but this does not work either. "Developer Tools" appears, but when I click "Next" it does not move past "Calculating requirements and dependencies."
Please provide a solution to the problem of either approach. Thanks.
I had the same problem. It started working when I unchecked the box labeled
"Contact all update sites during install to find required software".
Goto Preferences->Network Connections and set the correct option (native/direct as per your proxy settings on your network) restart eclipse and try again. [Switching to direct worked for me at home, however in office i had to configure it to native..] (Proxy settings require restart of eclipse IDE on some machines to take effect)
Ensure that your eclipse has all android toolkit dependencies (wst/emf...) installed (http://developer.android.com/resources/faq/troubleshooting.html#installeclipsecomponents)
Update
The logged error you provided leads to Install from updatesite hangs under Java 7 and in turn Eclipse Bug 362741 - downloads from update sites hang - (3.7.1 Indigo SR1 windows), see comment 6 specifically (you already applied comment 7).
Please note that while this seems to be a JDK 7 problem at first sight, the linked Java Bug 7077696 - java.net.Socket closes when "PASV" is sent on an authenticated FTP connection classifies the issue as a REGRESSION. Last worked in version 6u26, while you are using 6u30 already. Accordingly, the issue is reported to be fixable by switching to Java 6 elsewhere (implying an earlier version), see e.g. Cannot do any software installs using jdk1.7.0_01 (which uses 6u22):
However, everything works right if I then change the eclipse.ini to
change the vm to JDK 1.6:
-vm C:\Java\jdk1.6.0_22\bin\javaw.exe
Oracle's Evaluation concludes, that This does not appear to be a JDK bug, rather it's just the Windows firewall recognizing and blocking the ftp protocol.:
The only
difference between JDK7 and older releases is that the JDK is using
IPv6 sockets when IPv6 is enabled and so IPv4-mapped IPv6 addresses
are used. it may be that Windows or the firewall is not configured to
allow IPv6 sockets. [...]
Accordingly, they list a Workaround as well:
Run with -Djava.net.preferIPv4Stack=true
add a firewall exception for the Java binary.
run with -Djava.net.preferIPv4Stack=true (which disables IPv6 and uses AF_INET sockets exclusively)
or disable stateful FTP inspection in the firewall (registry setting or netsh command)
The firewall adjustment seems to be a confirmed workaround as per comment #4 in Socket Exception only in Java 7 (though simply turning it off like there should be handled with care of course).
Good luck!
Presumably you are already aware of Robamaton's answer to Eclipse, Android Plug-in, Install New Software just says “pending” (there are many ADT related questions and strangely it didn't show up immediately in a respective search)? It basically comes down to Codejammer's hint towards Preferences->Network Connections (+1), though with an explanation why it might still fail on your network regardless, see the comments:
Oh, I read that it doesn't respond to general requests from browsers.
In any case, network admin confirms it's making a socks connection,
but then doing nothing further.
and
Ok, further to previous comment, it's probably trying to connect via.
socks 5 - but our network only has socks 4. Admin is going to run the
5 version to see if it then works.
Workaround
Regardless of whether the socks 4 vs. socks 5 proxy settings are actually the problem, a potential workaround might be to install Eclipse and ADT on a different system (ideally on a different network), and copy the resulting folder to yours thereafter (after all, an Eclipse installation is simply a collection of files).
When doing so, please ensure to match 32- vs. 64-bit regarding both the JDK and Eclipse between the source and the target system, because a mismatch would yield other problems (see e.g. my answer to Failed to load the JNI shared library on starting Eclipse).
What versions of eclipse are you using?
In Helios I was able to install the plugin by going to Help -> Eclipse MarketPlace -> Yoxos MarketPlace (Second Icon at the bottom) and search for ADT and install.
If you were unable to get network update working, please try downloading the ADT zip package and installing locally as the download page says.
http://developer.android.com/sdk/eclipse-adt.html
I find these google sites very difficult to connect with from certain networks, but not from others.
Here in Germany, I had terrible trouble going through Alice, but none going through Deutsche Telekom.
Sometimes I could reach the dl-ssl host from Alice, but in some later operation it would hang then time out.
A day or so later, I might be able to make a connection again. Some people say they had luck going through a proxy, or by changing "http" to "https". I also saw this.
Here's what I think is going on.
First, Eclipse is miserably buggy, and handles unexpected situations very badly (for example, catching all exceptions, but failing to provide the exception's message!!), particularly when it comes to unresponsive links. It reminds me of the stock story of the mentally disturbed psychiatrist.
It looks as though the google server is badly configured, possibly as a naive protection mechanism meant to repel denial-of-service attacks: it only handles a few connection requests within a certain time frame from hosts certain networks, and if it gets too many requests, it locks out connections with the host for a long time.
Unfortunately, a single Eclipse update might require many connections in rapid succession; somebody unsure of how to configure Eclipse the first time will likely trip the Google booby-trap.
In my case, I was able to download what I needed by carefully choosing a subset of the available software, being very patient, and if I got locked out, just waiting a day until it let me in again.
Cheers!
I had the same problem and it was driving me nuts. I kept trying for a couple of hours--getting the same error message--and at once it worked! So if I were you I'd just leave it for a bit and come back in a couple of hours and try again. There are several other suggested solutions online that I found, but neither of those seemed to make a difference.
I've faced with the same problem before. In my case this was a problem that I was working under the proxy. I think you also work behind a proxy.
I've solved this problem in the following way. Find the SDKManager.exe and run it. In this program find proxy configuration and fill it there. Then from this program try to update your SDK (maybe this will require you to restart this program).
I do not know why but Eclipse proxy configuration is not working in case of Android ADT.
P.S. You have to use JDK 6 (or 5), not JDK 7!!!
Use Following link to update ADT Pligins.
https://dl-ssl.google.com/android/eclipse/site.xml
The only answer I found out when I got this problem was to download the latest 'Eclipse Indigo for Java', updating the ADT and android SDK.
After few hours, everything was normal.
Turning off IPv6 worked for me.
In my case I use proxy setting, and I follow the instruction of this post. But just one small modification: the SOCKETS setting should be clear and empty as suggested by here

Categories

Resources