I am trying to sync my app with the server (periodically,on-demand & when network outage happens),which uses the basic authentication for the syncing.Here i am facing this error.
Had done some research on this but found no solution.Have anyone come across this & have a solution???
PS:I am a novice developer in android.
I recommend double checking the method url that you are using.
For instance, can you run it using Postman or some other REST client and get a valid response?
This behavior happened in one of my project while I accidentally used a broken method URL but with a right host.
good luck:)
Related
I am working on an ionic 3 Project. When i run the project on android i get the following error.
Access to XMLHttpRequest at 'https://baseurl.com/api' from origin 'file://' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The 'Access-Control-Allow-Origin' header has a value 'https://baseurl.com' that is not equal to the supplied origin.
I started getting this error from last week monday and until then it was working fine.
In the requests(POST/GET) i am using the following headers
headers.append('Content-Type', 'application/x-www-form-urlencoded');
or
headers.append('Content-Type', 'application/json');
According to the ionic documentation CORS Errors, what i understood was that there are changes has to be done from the server side. Is there anything can be done from the ionic side? What could be the issue?
Two problems with your issue. One is more simple, and one is that https://baseurl/api doesn’t have a .com, or a .anything, so it is mostly invalid. The second that CORS is a necessary evil to deal with. You are going to have to set up a local server do deal with it, as some requests cannot be made by items being served by a file:// protocol. Local servers can be set up a variety of ways, depending on your situation. It would be helpful to explain how you are running it, and what tools you are using, so that we may be able to better help you.
The issue is due to a chrome update and for further details about the issue please refer This.
Update the 'Android System Webview' in google play store to the latest version and this issue will go away
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 making a POST call to a tomcat server running Struts2 using the retrofit library on an Android Galaxy S3 (/Nexus 7) device. The POST call fails. The tomcat log shows Socket timeout exception.
The same POST using the exact same headers done via curl does not have any issues. I verified that the data on the wire matches using charles proxy.
Any tips/ideas on debugging this issue.
The post call is as follows
#POST(Constants.URL_GET_ORDER_LIST_BASE)
void getCardOrderList(#Body GetOrderListRequest getOrderListRequest, Callback<GetOrderListResponse> cbGetOrderListResponse);
Please let me know if I need to add more information to explain this better.
Adding Square's OKHTTP library into the libs folder fixed the issue.
I was having SocketTimeoutExceptions too. Pay attention to always add the final slash to your POST call.
Example:
BAD
#POST("/customers")
GOOD
#POST("/customers/")
My mistake was just this :)
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.
I found many examples on Stack Overflow and I just don't know where to start since I have a particular prerequisite:
My Delphi Datasnap Rest server is using ZLibCompression and RSA encryption (in TTransportFilterCollection of DSHTTPWebDispatcher). Is there an Android restful API that can handle those? Any sample that already implements that?
I found this thread Android REST client, Sample? as a good starting point, both lightweight and well-formed clients are presented but is it enough for me?
Thanks in advance for any hint, sample or library that you could point me to.
you can use the Android Rest-Client for sending data to a webservice
see my answer in the post Adding body of call to POST using HttpURLConnection
I just used the proxy generator from Danasnap server TDSProxyGenerator component (http://yourserver:port/proxy/java_android.zip) and added this code to my android project...
I had to search for the DSRESTSSLFactory.java file that is not generated by the proxy (but required !!), i found it in a demo from embarcadero, and from that point the communication is entirely handled, all accessible procedures are publicated, and really really simple to use...