Currently I'm developing android application that needs to connect itself to REST API. It is crucial for my app to access API whenever connection is possible (mobile data/wifi).
But when testing my app something extremely weird happened. Application works as expected almost all the time, but when on VipMobile operator (Austria telekom group) I cannot connect to API.
At first I didn't get it, error was too unreadable. It says
j u fehler6 the requested item could not be loaded & wrong mime type
There are a lot of unprintable chars in that message too. When i figured out that it is operator fault i tried to copy link to my API and got this.
What could that possibly be? Can anyone point me in any direction, I cannot publish application as long as there are those ridickulous errors.
This happens when the user is on 3g connection. Some mobile operators intercept clients request and if the Content-Type is not good, or not defined they display page like this. This happens also to vipmobile operator in Serbia.
Try to add right content-type to response headers on your server side.
Try to put for example Content-Type:text/plain;charset=utf-8 to headers
Related
The issue I'm facing now is related to poloniex public API. For some reason I get the error on web browser on ask reCAPTCHA option.
[3463] BasicNetwork.performRequest: Unexpected response code 403 for https://poloniex.com/public?command=returnChartData¤cyPair=BTC_XMR&start=1405699200&end=9999999999&period=14400
In theorie, API methods are call from a code ( and not directly as a normal webpage on a web browser.)
When you write code to make api call, generaly (except a specific requirement ) you did not setup the "User-Agent".
In your case the User Agent is added on your web browser side.
So it is possible that Poloniex double check "User-Agent" in order to ban not conventional browser ... probably to avoid DDOS.
Last news has confirmed that some fake poloniex android app was stealing API secret and key, so it is potentialy a security feature setup in response to this treat by Poloniex to avoid definitly that "malware" android app could act on wallet without the user permission.
If it is not relative to anti-ddos process it could be relative to mobile ISP applying filter or doing MIM for security.
Fetch is throwing a Network request failed error when I try to make a request to a local server in the Android emulator. I'm pretty sure the request isn't getting out of the app.
I've checked and double checked the request headers and target URL, all correct (Hitting the right URL and specifying Content-Type and Accept). I tried disabling CORS on my local server, no effect.
I'm using digits in my app and digits is able to make contact with its server outside the app and return authorization, so I'm think something is going on with React-Native.
I've tried manipulating the app permissions, but no dice, it only needs the android.permissions.INTERNET heading in the manifest.
Any ideas on how to move forward, either a quick fix or something I've overlooked?
Figured it out, the problem was that the android emulator runs in a VM. I was trying to hit localhost, which was pointing at the VM, so I needed to specify my ip or 10.0.2.2 instead.
I am trying to implement a Sample application in Android which gets the malware and phishing list from safe Browsing API and checks the authenticity of URL, this is client side method, but I am constantly getting 400 (Bad Request) as response code when I am trying to hit the URL.
Searched throughout the internet but couldn't get any sample working code.
Even on Developer's Guide page https://developers.google.com/safe-browsing/developers_guide_v2 it is not mentioned how to send the list name correctly in POST request for downloading or updating.
Please help me by providing the correct procedure of how to send list name (if code snippet can be posted, it would be great as I am new to Android.)
Check out that request should end with '\n'. It is common to ignore this. I hope it helps.
I am confronting myself with a problem that I do not know how to interpret. I am doing a project using Android and Google App Engine. When I am trying to save information in Google App Engine's Big Table, directly from the servlet (hardcoded) - the save is performed with no problem. But when I am trying to save data from my Android device, the save is not performed and the log indicates Apache-HttpClient/UNAVAILABLE error. To be more specific:
405 55ms 0kb Apache-HttpClient/UNAVAILABLE (java 1.4)
82.155.246.249 - - [10/Jun/2013:05:20:59 -0700] "POST /servletnamehere HTTP/1.1" 405 306 - "Apache-HttpClient/UNAVAILABLE (java 1.4)" "appnamehere.appspot.com" ms=56 cpu_ms=21 cpm_usd=0.000034 app_engine_release=1.8.0 instance=00c61b117cede3f754aa1ece730dc88287a20199
I have seen that 405 HTTP error appears in the context of a POST method ( "405 errors often arise with the POST method. You may be trying to introduce some kind of input form on the Web site, but not all ISPs allow the POST method necessary to process the form." ) => indeed, I am trying to perform add (the object is a JPA Entity) in the database using a POST method. The data I am receiving from my Android device is serialized, through an input stream (in my case, working with JSON is not an option, these are the specifications).
Also, 306 HTTP error reffers to switch proxy. While the porevious error might be a bit intuitive, this one is beyond my student knowledge.
I have followed the instructions of this tutorial (http://trumpy.cs.elon.edu/joel/sigcse2011/), which is indeed what I need, but I really cannot figure out what I did wrong. I took again the procedure, stept by step, but I don't see the flaw.
Any help will be indeed appreciated. If I should post some code, I'll gladly do it.
Best wishes,
Cropcircles
LATER EDIT:
Now I get 417 HTTP error expectation failed. I have seen that I am supposed to set a certain parameter on false, but this workaround was available only for .NET. Is there anyone who knows what's the correspondent of the following, in Java? I am really really confused.
<system.net>
<settings>
<servicePointManager expect100Continue="false" />
</settings>
</system.net>
This is not an answer, but is too long for a comment and may be helpful, so here goes...
First, it's hard to tell what's going on here because there is limited info. Try to post more of the logging either on the client or on the server. Go to the server console and get more info, for instance, or add debugging in the client. I'd start by trying to make the POST from a debug/testing tool like hurl.it: http://www.hurl.it/ (hurl is a nice web front end to a command line HTTP client named curl, see curl itself if you want a more advanced peek). That way you can test and poke around and make SURE your server side works as you expect with a generic client. Then build other clients (like Android).
Second, "Apache-HttpClient/UNAVAILABLE" is not an error, it's just the user-agent String -- so ignore that part. (UNAVAILABLE is where the version typically is, but some impls don't have access to the version sometimes, it seems.)
Third, the 405 response code IS an error, it means POST is not allowed at the server you are trying to POST to. That can either be because POST is not allowed at all on said server, or you're violating some security policy (such as same origin).
If it's AppEngine, first check the APP you are using and make sure it supports POST (look for info on how to do POST at AppEngine to solve, for instance: google app engine: 405 method not allowed). When you say you can do it directly from a "servlet," do you mean that a POST from a different client works? (Servlet is a server side technology, so that's a little confusing.) If so then make sure your Android app is doing the client part the same way to the same host (multipart vs urlencoded, etc).
For a little more on the security stuff, which could be involved, see this post: Google App Engine + jQuery Ajax = 405 Method Not Allowed.
I've had the same trouble and in my case It was an error due to no write permission on server side area.
I was following an android test to write on a file a value transmitted in async way via POST method.
Apache received the POST request but was not able to write the data on the file due to security permission on it.
Android 2.3.3
The documentation of Millennial Media says that I can use a HTTP GET Query to get the AD as a HTML Response.
My client application needs the ads to be embedded in an article, that comes as a response from server. After getting the response, we construct the page, using HTML tags and display it in a viewpager. While constructing the page, since the response is HTML, i can add it to the page before it gets displayed.
To construct a HTTP GET query, we need to have
APID The Ad Placement ID.
AUID The Unique Identifier for the device.
UA User Agent.
UIP The User's Public IP Address.
Where do I get the above to construct the GET query,
APID - from the mmedia site (in my account)
AUID - ?
UA - ?
UIP - ?
How can I query these details?
If someone has previously done this or has an example or a link, please guide me.
EDIT :::
#Millennial Mark
Thanks for the help. Now I have, APID and AUID. I am building this on the client side. So, I can query your server with just these two values and I get a response. - Understood till here.
So assuming my apid = 123149 and auid = eeabcef75ce706b4, my url would be,
http://ads.mp.mydas.mobi/getAd?apid=123149&auid=eeabcef75ce706b4
that's it. No other data needed?
Next question is :::
Can I query the server, with what size of the AD i want. For example, if the app is running on an tablet, I would need a larger banner (for ex: 728x90) than the one I display on the phone(for ex: 320x50). So, can I send the needed banner size along with the HTTP Get request? If so, how?
If I still have questions after this, I will use the support ticket.
I've seen a few integrations done this way-- usually in a server-side language like PHP, JSP, or ASP. Depending on what server-side technology you're using, where these variables come from is going to look different. The UA (user agent string) and the UIP (user's external IP address) usually comes from an inbound HTTP request headers. PHP, for instance, has a variable called $_GET for retrieving these parameters so you can pass them onto your Millennial API call. In these cases, it's acceptable but not optimal to pass the same value for AUID as you do for UIP. Then, you can echo out the response of your call to Millennial onto the webpage on its way into your app.
On the other side, if you're trying to build this into your Android app ("client-side")-- getting the AUID is as easy as calling Secure.getString(this, Secure.ANDROID_ID); and UA and UIP can be omitted since your WebView object will populate them in their request headers, and Millennial's servers will be able to recognize them.
If you'd like more guidance (since Stack Overflow is more of a Q&A environment and not a discussion board), I recommend putting in a support ticket at https://tools.mmedia.com/user/supportDevPortal