Android :: SSL Socket Blocks On Read While Changing Connection / Is It A Bug?

Feb 19, 2010

I assume that when I do a read on the inputstream, it blocks until it gets more data to read.
I also assume that when the connection is closed, the read throws an IOException.

The problem is that sometimes when I change the connection from carrier to WiFi or from WiFi to carrier, the read just gets stuck and never throws the IOException.

The SDK is 1.5 and the phone a HTC Hero.

This behavior is quite ugly for me because I need to stay always connected.
Does someone else have ever seen this problem ? Is it a bug or am I the bug?

Android :: SSL socket blocks on read while changing connection / Is it a bug?


Android :: Blocking On Socket Read Operation While In Sleep Mode

Dec 28, 2009

I have code that runs in the background and holds a connected Socket and it's InputStream.It calls read() infinitely until something is received, then continues to parse.Socket timeout is 0 of course.I am interested in what would happen when the device goes to sleep?Is the CPU off? Will this socket be responsive in this case?

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Android :: Socket Freezes Using GSM Connection

May 27, 2010

I'm working on application that uses a socket connection.I've implemented 2 different Threads for the read() and the write() methods so they are not being blocked by the read.Everything is working well on the WiFi connection but when I switch to GSM connection the connection becomes unstable without any exception being thrown. It means that there are freezes.the write and read seems to work but no data is actually being piped.

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Android :: Socket Refused Connection

Dec 7, 2009

I wondered if there could be a specific reason why a server socket could refused a client request connection , the server running on one android device the other on the emulator?

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Android :: How To Manage Connection To A Socket?

Jun 21, 2010

I would like to know what is the recommendation for socket connection management in Android?In our App we would like to be connected to a TCP/IP server when our app is in the foreground or paused. So, create a connection to a TCP/ IP server when the App starts basically, On Create of the launcher activity. However, we do not want to create a new connection and close connection every time an activity is created, paused, destroyed or orientation changed. So, we save the connection object in the App class and the activities will reuse the same connection.Question is when do I close it? I would like to close the socket when the App is "paused", "stopped" or "destroyed". The problem is these messages are not sent in the App context. How can I figure out if the App is in foreground or not? Even the "Terminated" event for an App is not guaranteed to be delivered. So, in that case how do I know when to disconnect?

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Android :: Socket Freezes Via GSM Connection

May 24, 2010

I'm working on application that uses a socket connection. I've implemented 2 different Threads for the read() and the write() methods so they are not being blocked by the read. Everything is working well on the WiFi connection but when I switch to GSM connection the connection becomes unstable without any exception being thrown. It means that there are freezes at the write and read seems to work but no data is actually being piped.

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Android :: Bluetooth Socket Connection

Nov 11, 2010

I'm creating an application that uses an android to send and receive data via bluetooth. but I'm having problems when creating the socket. He gets caught in that line mmSocket btserver.accept = (); And I can not pair with any device.I have another doubt, I can make that communication with an android and a symbian?

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Android :: Server Socket 3G Connection

Mar 3, 2010

I have been trying to setup a Droid to Droid 3G connection. I can confirm that all works great in wifi mode. The Droid can make connection requests (Http, Telnet, raw sockets) in 3G, but I cannot get the Droid to accept a socket connection in 3G mode. I was told by Verizon that a special license may be needed to accept socket connection requests and they would send me some information. So far none has been received. If anyone knows how to program the Droid to accept socket connection requests over 3G, please respond. Also if anyone knows why this not allowed please respond.

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Android :: Detecting Socket Connection Failure

Apr 1, 2010

I am working on an app that uses a Socket to connect to a controller over TCP. The protocol library was written in Java and I am implementing it in android via a Service. where the Connection class is a Thread that handles the communications with the controller. It's where the Socket lives.I'm using the Preferences mechanism to store the IP and Port. If I feed the Socket the correct IP and Port, the Connection Service works beautifully. However, I am trying to simulate a user entering the wrong information and having the connection fail. The ultimate goal is to present a dialog and offer the ability to "reconnect" or "update settings". However, when I enter a wrong Port number, the application simply hangs.I was under the impression that Threads executed concurrently so I've tried moving the call to start the Connection Service to a Thread, but it still hangs the application.

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Android :: Permanent Socket Connection Drains Battery

Jul 15, 2010

I am developing an app which has one service running in the background even if the application is closed. This service basically listens to the server via socket connection. It is an app's requirement to keep one consistent connection open. but this drains battery liek anything. I know socket is costly affair in the sense of battery life. Do anybody know any other way to keep communication channel open? or any optimization in using socket?

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Android :: Create Persistent Socket Connection On Droid?

Apr 29, 2010

First off, let me say that feel free to recommend me if long lived TCP persistent connections are the way to go or persistent HTTP connections are better.

I've also pre-read that instead of having a persistent connection, I can have a polling mechanism.

I'm just asking in the curious interest of how can I create a persistent connection from Android to a server?

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General :: Socket Connection App SDK?

Jun 20, 2012

I'm making a chat program and server relay on pc and I was wondering if there's a simple template for tcp/ip socket connections.

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Games :: DROID BLOCKS - Sliding Blocks Puzzle

Jun 29, 2010

Droid Blocks is a classic sliding block puzzle with a sci-fi twist and over 500 levels.

You can get it from the marketplace (lite version also available) or from Droid Blocks Official Website for only 1.99$.

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Android :: Server Socket Ports Connection Timeout Error

Jul 9, 2010

I am playing around a bit with peer-to-peer communication with android devices.I have written a basic program that creates a listening ServerSocket on each phone using the application. Using the application you can also connect to other devices that is listening, by connecting to the remote ServerSocket. Nothing strange about that.My problem is that it seems that the listening port is not open for connection on different devices. I can connect to my HTC Desire, works like a charm. But connecting to a HTC Hero I get timeout, same if I try to connect to the emulator. But connection FROM the emulator to the Desire and FROM the Hero to the Desire works like a charm. Whats up with this? No security apps is installed and both devices(and the emulator) is running 2.1.

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Android :: Make Beep Sound Notification On Socket Connection Establishment?

Aug 3, 2010

How can I make the Device sound a beep when socket connection has been established. In other words, how to set a notification tone when an event occurs in Android sdk?

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Socket Programming - TCP Connection Through NetBios (NBNS) Name?

Dec 22, 2011

I'd like to know whether there is a way to connect to a TCP server (socket server) in an computer using his name (e.g.: my computer has a host name: MyComputer; then I must connect with it using his name).

It can be done using NBNS protocol (NetBios Name Service), but always I try to connect using his name, the Tablet uses DNS protocol instead of NBNS, as I might expct.

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Android :: Connection Between Server/socket When It Moves From EDGE To WIFI And Vice Versa

Dec 16, 2009

Does Android keep the connection between the server/socket when it moves from EDGE to WIFI and vice versa?

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Socket Networking - Set Up Basic Network Connection Using Droids?

Feb 7, 2012

I'm trying to set up a basic network connection using droids but I'm having problems.my server program:

Code:
ServerSocket ss = new ServerSocket(8888);
while(!end){
//Server is waiting for client here, if needed[code]....

the server runs until it reaches ss.accept() like it should but the client still can't connect. The client usually times out and nothing happens

I'm running both these programs using eclipse on my computer. I set the premissions in the manifest for both programs to let them use the internet and I have the port forwarding .

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Communicate To WiFi Enabled Arduino Board With Static IP - Socket Connection

Feb 3, 2012

So Im writing an application to communicate to a Wi-Fi enabled Arduino board with a static IP...

This is what Im trying to do...
1.) Enter Ip and Host
2.) Connect
3.) Simply send either a "0" or "1" to the arduino board

There are two activities at the moment, one to enter the IP and port of the Board (which is set from the board itself) and one to send data to the board. When i comment out the connection methods in the Communicator class the app swithches activities without any issues, but when i un-comment them and attempt to connect, the app immediately closes after i attempt to connect.

Code:

package car.test.namespace;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

[Code]...

Code:

package car.test.namespace;
import java.io.*;
import java.net.*;
public class Communication {

[Code]...

Code:

package car.test.namespace;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

[Code]..

Also, im not even seeing the "Connection Failed" message, the app is just shutting down,.

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Android :: Android Socket Connection Refused

Mar 11, 2010

I am trying to open a Socket on Android but everytime I try I keep getting connection refused error no matter what way I try.The error happens on the following line of code where I try to create the connection.

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Android :: Android Device To PC's Socket Connection

Oct 7, 2010

I am facing problem to establish a socket connection from android device to PC's a specific port like 8080. I just want to create a socket which will connect to the specific port and also write some data stream on that port.I have written some code for this purpose.

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Android :: Java Socket Not Throwing Exceptions On Dead Socket?

Jun 29, 2010

We have a simple client server architecture between our mobile device and our server both written in Java. An extremely simple ServerSocket and Socket implementation. However one problem is that when the client terminates abruptly (without closing the socket properly) the server does not know that it is disconnected. Furthermore, the server can continue to write to this socket without getting any exceptions. Why? According to documentation Java sockets should throw exceptions if you try to write to a socket that is not reachable on the other end!

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Android :: Socket Programming - Java - Many Clients One Socket

Nov 12, 2009

Essentially Im trying to get many many java clients connect to a socket on my ColdFusion server (Using the Socket Gateway). However before i even start to code this, Im a little confused about sockets and their performance. First of all, are sockets meant for many(1000+) clients connecting to one socket (say port 2202) on one server? How is the performance if all there waiting for is basically a ping, or something such that when these clients receive this "ping" they can go get some new data.

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Android :: Http URL Connection Can't Read Completely / Solution For This?

Dec 21, 2009

I am facing with problem related Http Connection.
MY code...

This code can't download data completely.
For example :
Total size to read : 13901 bytes
Above code can read size : 12937 bytes

What is wrong here?

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Android :: Android Socket Connection

Jun 8, 2010

I'm guessing this will be such a newbee question but I hit a wall and I am running the WebSocket.Now, when I start the server and run the Weberknecht client like a normal Java application I get a connection. Granted, the connection is quickly dropped because the handshake needs to be configured but at least the server shows me a connection was attempted.

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Android :: Detecting And Changing Programmatically Data Connection

Jun 14, 2010

I know that unfortunately detecting and changing programmatically data connection (GPRS/UMTS) on vanilla Android is not possible, and the common workaround is to edit APN settings. This is hardly a nice solution. However on my device (Xperia X10) I have an additional setting near "data roaming", that allows to enable or disable MMS and data. I suppose that this is a personalization made by Sony Ericsson, and maybe even other vendors have something like this. Is there a way to access this setting?

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Android :: Connecting Android Bluetooth Client Socket To Ubuntu Server Socket

Jul 15, 2010

I am writing an Android app that should exchange data to a server over Bluetooth, with the server side on a PC running Ubuntu, using the bluez library, in C (or C++).

My Android app fails (IOException) when I try to connect to my server socket on the PC.

Here is essentially what I in the java code (in Android, full eclipse project here: http://dl.dropbox.com/u/2968234/ThinBTClient.zip)

CODE:...........

This throws IOException after a timeout of 10seconds or so.

On the server side (in Ubuntu 8.10), I basically set up a Bluetooth server socket, along the lines described in the example bluez/sdp-register.c

Down below is my C++ program. To compile it do

g++ -I/usr/include/glib-2.0/ -I/usr/lib/glib-2.0/include -o bt_server bt_server.cpp -lbluetooth

I can do the reverse succesfully, i.e. create a server socket in Android and connect from Linux, however this is not what I want to do!

I think either the problem has to do with my config of Ubuntu.

CODE:................

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Android :: Socket Exception Socket Not Connected Android

Oct 27, 2010

In my android application i am trying to run a application using GPRS connection and not WIFI.When tried to run in wifi the app runs fine.The browser works fine with the APN settings set but when trying to connect to server using my application it gives me socket exception.I am using the below permissions in manifest file.
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses- permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<uses-permission android:name= "android.permission.CHANGE_NETWORK_STATE"></uses-permission>
<uses-permission android:name= "android.permission.WRITE_APN_SETTINGS" ></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" ></uses-permission>
I am receiving Socket not connected exception.Is there any other permission which i need to add for using GPRS connection other than WIFI.
10-27 18:26:19.689: WARN/CalSyncSvc(166): com.motorola.blur.service.email.protocol.activesync.ASException: Problem executing HTTP POST

10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ActiveSyncMgr.sendRequest(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ActiveSyncMgr.sendXMLCommandNoProvisoning(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ActiveSyncMgr.sendXMLCommand0(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ActiveSyncMgr.sendXMLCommand(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ActiveSyncMgr.sendFolderSyncCommand(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ProviderAPI.sendFolderSync(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ProviderAPI.updateMapFromFolderSync(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.service.email.protocol.activesync.ProviderAPI.updateFromFolderSync(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.calendar.sync.activesync.SyncService.syncAccount(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.calendar.sync.activesync.SyncService$QueueEntry.run(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:416)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:256)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.util.concurrent.FutureTask.run(FutureTask.java:122)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:648)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:673)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.lang.Thread.run(Thread.java:1058)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at com.motorola.blur.util.concurrent.BlurThreadFactory$BlurPooledThread.run(Unknown Source)
10-27 18:26:19.689: WARN/CalSyncSvc(166): Caused by: java.net.SocketTimeoutException: Socket is not connected
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.harmony.luni.platform.OSNetworkSystem.connectStreamWithTimeoutSocketImpl(Native Method)


10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.harmony.luni.platform.OSNetworkSystem.connectStreamWithTimeoutSocket(OSNetworkSystem.java:140)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:229)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:521)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at java.net.Socket.connect(Socket.java:1019)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:317)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:129)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
10-27 18:26:19.689: WARN/CalSyncSvc(166): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
10-27 18:26:19.689: WARN/CalSyncSvc(166): ... 17 more

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Android :: Sleeping In OnTouchEvent Blocks OnSensorChanged

Nov 13, 2010

I'm making an application which will utilize both touchevents and sensorevents. The problem with touchevents is that they fire off very often, and thereby consumes massive amounts of CPU time. The common solution is to do a Thread.sleep to make it cool down.However, if one wants to use both the onTouchEvent and onSensorChanged in the same activity, applying the Thread.sleep hack will also slow down onSensorChanged. This is obviously caused by the two methods being called from the same (ui) thread.Is there some way to call onTouchEvent from a different thread than the ui, so one could do the Thread.sleep trick without slowing down onSensorChanged as well?

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HTC EVO 4G :: Blocks Access Exchange Server - Not Available For Android

May 23, 2010

I'll be new to Android starting on June 4th and I'll be retiring my Blackberry Tour. There are a few apps on my Blackberry that I really like and use daily. So I have a few questions for the Android gurus out there.

1. Exchange Email- I work for a Computer Company that blocks access to their Exchange Server and although I've requested access repeatedly, they deny me every time. Is there a work around for Android similar to the Blackberry Desktop Redirector?
2. Sirius/XM- I know it's not available yet for Android but I was wondering if anyone has an update on the future availability of this App for the Evo.
3. Password Keeper- I would not be able to survive without this App on my Blackberry. Is there something as good or better available on the Android Market?
4. Can anyone recommend a good Chess Application for the Evo?

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