[android-developers] How to interrupt a blocking I/O operation?

2011-01-07 Thread ivan 
I'm wondering what the currently suggested method is for interrupting
a read operation of a socket input stream?

I know that traditionally the read could be interrupted by closing the
socket from another thread and catching an IOException, but I'm not
quite sure how to get at the socket from the apache classes.

Maybe I should use some sort of interruptible channel instead ... ?

Any links or help is greatly appreciated.

My code looks like this -- minus most of the error handling:

org.apache.http.impl.client.DefaultHttpClient
org.apache.http.client.methods.HttpGet
org.apache.http.HttpResponse

DefaultHttpClient client = new DefaultHttpClient(httpParameters);

HttpGet request = new HttpGet(Uri);

HttpResponse response = client.execute(request);

InputStream entityStream = response.getEntity().getContent();

try
{
   bytesRead = entityStream.read(data);
}
catch (IOException ex)
{

}

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Re: [android-developers] How to interrupt a blocking I/O operation?

2011-01-07 Thread Kostya Vasilyev 
You could try closing the input stream - that should propagate to the 
socket.


07.01.2011 20:07, ivan пишет:

I'm wondering what the currently suggested method is for interrupting
a read operation of a socket input stream?

I know that traditionally the read could be interrupted by closing the
socket from another thread and catching an IOException, but I'm not
quite sure how to get at the socket from the apache classes.

Maybe I should use some sort of interruptible channel instead ... ?

Any links or help is greatly appreciated.

My code looks like this -- minus most of the error handling:

org.apache.http.impl.client.DefaultHttpClient
org.apache.http.client.methods.HttpGet
org.apache.http.HttpResponse

DefaultHttpClient client = new DefaultHttpClient(httpParameters);

HttpGet request = new HttpGet(Uri);

HttpResponse response = client.execute(request);

InputStream entityStream = response.getEntity().getContent();

try
{
bytesRead = entityStream.read(data);
}
catch (IOException ex)
{

}




--
Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com

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Re: [android-developers] How to interrupt a blocking I/O operation?

2011-01-07 Thread Kumar Bibek 
Well, HttpClient doesn't use sockets directly, so you would not be able to
close the corresponding sockets. The execute method is actually the method
that is blocking for the first time.

You can look at the underlying request classes like HttpPost and HttpGet.
Both of them are subclasses of HttpRequestBase class which has an abort
method. May that would help.

Another way, might be to specify the timeout to a few seconds. :)

Kumar Bibek
http://techdroid.kbeanie.com
http://www.kbeanie.com



On Fri, Jan 7, 2011 at 10:37 PM, ivan istas...@gmail.com wrote:

 I'm wondering what the currently suggested method is for interrupting
 a read operation of a socket input stream?

 I know that traditionally the read could be interrupted by closing the
 socket from another thread and catching an IOException, but I'm not
 quite sure how to get at the socket from the apache classes.

 Maybe I should use some sort of interruptible channel instead ... ?

 Any links or help is greatly appreciated.

 My code looks like this -- minus most of the error handling:

 org.apache.http.impl.client.DefaultHttpClient
 org.apache.http.client.methods.HttpGet
 org.apache.http.HttpResponse

 DefaultHttpClient client = new DefaultHttpClient(httpParameters);

 HttpGet request = new HttpGet(Uri);

 HttpResponse response = client.execute(request);

 InputStream entityStream = response.getEntity().getContent();

 try
 {
   bytesRead = entityStream.read(data);
 }
 catch (IOException ex)
 {

 }

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Re: [android-developers] How to interrupt a blocking I/O operation?

2011-01-07 Thread Kumar Bibek 
@Kostya: The execute method is blocked till the server sends a request.
Closing the input stream will not help in this situation.


Kumar Bibek
http://techdroid.kbeanie.com
http://www.kbeanie.com



On Fri, Jan 7, 2011 at 10:44 PM, Kostya Vasilyev kmans...@gmail.com wrote:

 You could try closing the input stream - that should propagate to the
 socket.

 07.01.2011 20:07, ivan пишет:

  I'm wondering what the currently suggested method is for interrupting
 a read operation of a socket input stream?

 I know that traditionally the read could be interrupted by closing the
 socket from another thread and catching an IOException, but I'm not
 quite sure how to get at the socket from the apache classes.

 Maybe I should use some sort of interruptible channel instead ... ?

 Any links or help is greatly appreciated.

 My code looks like this -- minus most of the error handling:

 org.apache.http.impl.client.DefaultHttpClient
 org.apache.http.client.methods.HttpGet
 org.apache.http.HttpResponse

 DefaultHttpClient client = new DefaultHttpClient(httpParameters);

 HttpGet request = new HttpGet(Uri);

 HttpResponse response = client.execute(request);

 InputStream entityStream = response.getEntity().getContent();

 try
 {
bytesRead = entityStream.read(data);
 }
 catch (IOException ex)
 {

 }



 --
 Kostya Vasilyev -- WiFi Manager + pretty widget --
 http://kmansoft.wordpress.com


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Re: [android-developers] How to interrupt a blocking I/O operation?

2011-01-07 Thread Kostya Vasilyev 
It was implied that close() would be called from another thread (like 
the OP said he could do with a Socket reference). But then, I haven't 
used this library much.


07.01.2011 20:16, Kumar Bibek пишет:
@Kostya: The execute method is blocked till the server sends a 
request. Closing the input stream will not help in this situation.



Kumar Bibek
http://techdroid.kbeanie.com
http://www.kbeanie.com



On Fri, Jan 7, 2011 at 10:44 PM, Kostya Vasilyev kmans...@gmail.com 
mailto:kmans...@gmail.com wrote:


You could try closing the input stream - that should propagate to
the socket.

07.01.2011 20:07, ivan пишет:

I'm wondering what the currently suggested method is for
interrupting
a read operation of a socket input stream?

I know that traditionally the read could be interrupted by
closing the
socket from another thread and catching an IOException, but
I'm not
quite sure how to get at the socket from the apache classes.

Maybe I should use some sort of interruptible channel instead
... ?

Any links or help is greatly appreciated.

My code looks like this -- minus most of the error handling:

org.apache.http.impl.client.DefaultHttpClient
org.apache.http.client.methods.HttpGet
org.apache.http.HttpResponse

DefaultHttpClient client = new DefaultHttpClient(httpParameters);

HttpGet request = new HttpGet(Uri);

HttpResponse response = client.execute(request);

InputStream entityStream = response.getEntity().getContent();

try
{
   bytesRead = entityStream.read(data);
}
catch (IOException ex)
{

}



-- 
Kostya Vasilyev -- WiFi Manager + pretty widget --

http://kmansoft.wordpress.com


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Kostya Vasilyev -- WiFi Manager + pretty widget -- http://kmansoft.wordpress.com

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