How android system establish a data connection

by Amit » Wed, 09 Mar 2011 19:53:35 GMT

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 Hi All,

How android system try to establish a data connection at the time of
power up or when we set up an apn.

 As I checked the framework code, is a state
machine which interacts with RIL in order to activate/deactivate a
data connection. But when I put up any debug log in the ,it never gets hit either in success or failure

When this file is used ?



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1. BufferedReader.readLine hangs after HTTP connection has ended

I found my application run differently on G1 from Android emulator.

I used Ethereal to capture HTTP messages. I saw in both cases that the
server ended HTTP connection in 3 seconds after it finished sending

Here is the related code snippet in my Android  application:

                        InputStreamReader  br=new BufferedReader(new 
                        String line;
                        while ((line=br.readLine())!=null)
                        ...code to process each line

When the code runs on Android emulator, the while loop exits almost
immediately after HTTP connection terminates.

However, when it runs on G1 phone, the while loop does not exit until
60+ seconds after TTP connection terminates.

Using G1,  have you experienced similar problem??? If you have, how
did you work around the problem?

Thanks in advance for any advice!!!


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