Android :: HttpsURLConnection Connection Problems
Sep 27, 2010
I'm a problem with a HttpsURLConnection that I can't seem to solve. Basically, I'm sending up some info to a server and if some of that data is wrong, the server sends me a 500 response code. However, it also sends a message in the response telling me which bit of data was wrong. The problem is that the message is always empty when I read it in. I think this is because a filenotfound exception always gets thrown before the stream can be read. Am I right? I tried reading the errorstream as well but this is always empty.
Here's a snippet:
CODE:........................
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May 20, 2009
I have been working with the HttpsUrlConnection class and have found an interesting issue, it seems to fail on every other connection. The first request connects to the server successfully but the second one always fails. Any ideas on what i may be doing wrong.
Here is my code.
code:.................
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Sep 17, 2010
I use the following code snippet to connect to a server and retrieve some data:
HttpsURLConnection con = (HttpsURLConnection)myurl.openConnection(); InputStream ins = con.getInputStream();
The code mostly works fine. If I leave the app for a few minutes, and return to it and make another request, I receive an IOException: Broken Pipe.
Once it has failed one time, it immediately works again, and will continue to do so until I leave it for a while once more.
I don't know if this is an Android specific thing, or general Java, but it doesn't happen on my desktop test version.
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Aug 30, 2010
I try to establisch a HttpsURLConnection with:
CODE:.................
But I get an Exception:
CODE:......................
But I can't find out, why. The same example is everywhere across the web.
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Mar 9, 2010
I am using HttpsURLConnection to post data to a web server.
Here is the function I wrote to get the result. (see the code below)
Very strangely, when the function be first called in my program it would very likely return -1; and then I re-call the function after the first call, it would always work ok.
So I wonder if there is anything I am missing in the code that when the function be firstly called, the missing party is be "initialized", in that the followed call goes OK.
Here is my code of the function:
CODE:....................
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Jan 31, 2010
I'm hoping someone could help me out with intermittent connections I'm getting using code with HttpsURLConnection.
The code I'm using is below:
CODE:...............
The connection works the first time everytime when I use it to pull a json file. However, when I use the connection again to send a command, it always fails the first time. It then typically works if I send the
command quickly ( within 5 seconds), but fails if I wait a while. I don't think its a SSL issue because it connects the first time correctly, but I could be wrong here. I also tried many different
variations such as adding:
CODE:.............
However, I had no luck. Any help would be greatly appreciated.
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May 15, 2010
I think I'm experiencing the same as http://groups.google.com/group/android-developers/msg/9d37d64aad0ee357
This is Android 1.5 SDK. I happen to call several times below code(which is in a method) with
the same url and it fails intermittently. When it fails, there is no exception, the stream is empty so the
readConnection fails, and getResponseCode returns -1. Global caching is disabled, setDefaultUseCaches(false);
I suppose there must be some kind of url connection object pool somewhere.
How can I workaround this?
CODE:............................
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Aug 16, 2010
I try to build an https client for android and i need do get some request of an Servlet but when i use the getInputStream method the applicaion hangs.
There is no error only hanging when i call the method.
CODE:..................
This is only to check the call, but it didtn work.
the subscribe method works, when i comment out the line with the inputstream, the server show me all is correct. I can try the same with the Firefox and it works and i can see the request. i also put the keystore into the TrustManager.
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Mar 12, 2010
I have some Android code that can send files to my webserver using an HttpsUrlConnection, but when it tries to send larger files I get an OutOfMemory exception when opening the OutputStream. Can anyone offer some assistance?
It looks something like this:
code:..............
This is where I try different things. The closes solution has been: httpConn.setChunkedStreamingMode(1024); In this case, I don't get the OutOfMemory immediately when opening the OutputStream, but I see the heap growing as I os.write() and it eventually runs out.
code:..............
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Mar 30, 2010
I've got a problem with my application when I make a number of requests using the HttpsUrlConnection class.
My program makes the first request using the HttpsUrlConnection class to retrieve a file. It then makes a second request to the same server to retrieve a different file. What happens however is that periodically I'm getting a -1 HTTP response code on the connection.
When the failure occurs between the two requests I see the following line of trace in logcat:
D/OpenSSLSessionImpl( 699): Freeing OpenSSL session
This seems to happen fairly consistently. If I retry the second request after it has failed it generally works and I get the requested file from the server.
Note that if I don't see the OpenSSL session being freed the second request works fine the first time.
Some other information:
1) I'm not calling disconnect on the connection
2) I'm don't always read the entire file from the server after the first request
3) I always close the InputStream in the event that I get an InputStream on the first connection
How to prevent the OpenSSL session from being freed.
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May 15, 2010
I'm experiencing the same as http://groups.google.com/group/android-developers/msg/9d37d64aad0ee357
This is Android 1.5 SDK. I happen to call several times below code(which is in a method) with the same url and it fails intermitently. When it fails, there is no exception, the stream is empty so the readConnection fails, and getResponseCode returns -1. Global caching is disabled, setDefaultUseCaches(false);
How can I workaround this?
CODE:.........................
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Nov 24, 2010
I'm having a big issue with a static HTTPS connection method. Every second request fails and HttpsUrlConnection.getResponseCode() returns -1. So every second call works well, returning data as expected.
It's the method of a static class I'm using in different corners of my application. I would guess there is anything I don't clean up correctly when the method returns the first time and that whatever causes a problem might get destroyed through a second call of the method. But I'm having a hard time finding any clues.
I'm currently using this class to talk to hosts with invalid SSL certificates. Not going to use this in the final version of the app, but right now I need to save money. ;)
CODE:.......................
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Oct 14, 2009
I'm using ThreadSafeClientConnManager to manage a pool of client connections, because my application has several threads, which are simultaneously connecting to a webserver.
Abstract sample code:
CODE:..............
Now lets say on of this threads is downloading a large file, but then the user of my application is switching to another activity/screen. Therefor the file is needless and I'd like to abort this download connection.
In ThreadSafeClientConnManager I found this method: public ClientConnectionRequest requestConnection (HttpRoute route, Object state) Returns a new ClientConnectionRequest, from which a ManagedClientConnection can be obtained or the request can be aborted.
So far I've been using:
CODE:.........
Now from what I understand, I've to use:
httpclient.getConnectionManager().requestConnection(HttpRoute route, Object state);
And that's the point where I'm stuck. I assume that for the route I can just use new HttpRoute(new HttpHost("10.0.0.1")) or whatever my server is, but what to put in for Object state?
And second, as soon as I've the ClientConnectionManager I can call getConnection(long timeout, TimeUnit tunit). But then from there, how I do I execute my HttpGet httpRequest = new HttpGet(URL_TO_FILE); as I did before with HttpResponse response = (HttpResponse) httpclient.execute(httpRequest);?
I've been gone through the documentation and tried out quite a few different things, but I wasn't able to obtain a working solution. Therefor any suggestions and/or code examples are more than welcome.
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May 12, 2010
Whenever a application needs internet and connection fails, I get a message dialog
Connection failed
This application requires network access. Enable mobile network or Wi-Fi to download data.
and two buttons, Settings, Cancel.
How do I detect there is no internet connection?
How do I popup a same dialog in my application?
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Oct 27, 2010
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Jun 22, 2010
I'm new at programming with Android... I'm stucked at the Network topic...
Basically this is what i'm trying to do:
I wan to send some instructions using the Http protocol to a device which has a static Ip address through a private Lan Network...
So first of all I'ved Tested the Code by connecting to a wesite and everything was Ok, I could confirm the connection was made through the HttpURLConnection ResponseCode()=200 (equals to HTTP_OK) ...So my Code could access the INTERNET. But then i created a Lan Network with the Device mentionned above I couldn't have any Connection to it...neither to other devices (Pc attached to the Network)
My App gets no response...the main Screen switches to a Black untitled Screen...Is there a Permission i have to request through the MANIFEST.XML File for Lan Networks as there is a one for INTERNET?...
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How to connect to a secured wireless network programmatically.. im able to detect and list the available networks but how do i connect to it giving a password..
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Aug 22, 2009
I wrote java code that connects remote sql server. But code does not work in android.
Code is as follows:
CODE:...........
And log is follows:
CODE:..............................
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Jul 16, 2010
I wanted to ask if there is a possibility to create udp connection and then change to tcp connection while the emulator is client and the server's code is java. all I found at the web is or tcp connection or udp but never a mixed between them.
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I was wondering if it was possible to connect the lap top with the T.M G1 phone to get internet connection.
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I am trying to connect remote ms sql server 2005 and tried something but I could'nt. Does any of you know to connect sql server? I searched and I realize that Driver must be loaded.
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