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  • Upgrading from Ubuntu 12.04 to 14.04 for better WIFI connection - Any problems to be expected?

    - by lindeblau
    Since upgrading from Ubuntu 10.04 to 12.04 on my ACER Aspire One D270 I have problems with WIFI-connectivity. I was planning now to upgrade to Ubuntu 14.04 hoping to solve this problem. On reading the last bunch of questions posted here I find quite a few regarding problems which arose after installing Ubunto 14.04. Would like to get opinions - is it worth upgrading yet or are to many problems to be expected?

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  • Is Google indexing pages that has no connection with other pages? [duplicate]

    - by Grkmksk
    This question already has an answer here: How did Google find my unlinked newly created pages? 3 answers I am working on a web project that has nearly 100 thousand instant users and there is a webpage that we are using for test cases. There are no links pointing to it from other pages. It shouldn't be indexed by Google or any other search engines. "noindex" can be used in this situation, I know but I wonder if Google (or any others) indexes this page, if I don't do anything to prevent it.

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  • [Toplink] How to add c3p0 or DBCP Connection pool?

    - by Jean N.T.
    Hello, Could you please explain to me how to add a standalone c3pO or DBCP connection pool to my toplink-based JPA project? I have a persistence.xml file, and everytime I want to query the database, I'm doing this: EntityManagerFactory emf = this.getEntityManagerFactory(); // Surely using persistence.xml to set up the factory EntityManager em = emf.createEntityManager(); ... Where do I build the bridge between my external connection pool manager and Toplink? Any ideas or links are welcomed. Regards, Jean

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  • Using the erlang mysql module, how is a database connection closed?

    - by Dan
    In using the erlang mysql module the exposed external functions are: %% External exports -export([start_link/5, start_link/6, start_link/7, start_link/8, start/5, start/6, start/7, start/8, connect/7, connect/8, connect/9, fetch/1, fetch/2, fetch/3, prepare/2, execute/1, execute/2, execute/3, execute/4, unprepare/1, get_prepared/1, get_prepared/2, transaction/2, transaction/3, get_result_field_info/1, get_result_rows/1, get_result_affected_rows/1, get_result_reason/1, encode/1, encode/2, asciz_binary/2 ]). From the this this, it is not apparent how to close a connection. How a connection closed?

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  • Debate: Can a HTTPS connection be hijacked with a man-in-the-middle kind of attack?

    - by Iulian Serbanoiu
    Hi, I'm wondering if the company I work for can see what I'm doing when I'm using a HTTPS connection - gmail for example. My case: I'm using gmail from work but I need to enter a password for a proxy when accesing the first web page - the password is asked inside the browser. I receive from the proxy a certificate which I must accept in order to make the Internet connection work. So the question is: Can https data exchange, between gmail and browser, be tracked? Thanks, Iulian

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  • Connection for control user as defined in your configuration failed. xampp

    - by Zann
    when i tried to uninstall xampp and reinstall xampp.I received below error message when i go phpmyadmin Need help and guide to solve it .thanks Error MySQL said: Documentation 1045 - Access denied for user 'root'@'localhost' (using password: NO) Connection for controluser as defined in your configuration failed. phpMyAdmin tried to connect to the MySQL server, and the server rejected the connection. You should check the host, username and password in your configuration and make sure that they correspond to the information given by the administrator of the MySQL server.

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  • Is it possible to keep mysql migration running without keeping connection open?

    - by taw
    ALTER TABLE can easily take a few days - and during this time there's a non-negligible chance of connection getting terminated due to network problems. Is it possible to start ALTER TABLE (or CREATE TABLE ... SELECT ...; or some other very long running query) and leave it running without keeping connection open all the time? (the obvious solution of screen + console mysql client won't easily work as there's no ssh running on that server, only mysqld).

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  • Is there a way to get the uid of the other end of a unix socket connection

    - by yuyichao
    Is there a way for a unix socket listener to only accept connection from certain user (chmod/chown does not work for abstract socket afaik), or in another word, get the uid of the incoming connection (on Linux)? Dbus, which uses abstract unix socket on Linux, has a function GetConnectionUnixUser which is used by polkit to determine the caller. So I suppose the dbus-daemon must have a way to do that. Does anyone know how that works? THX

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  • Is there a standard dialog for constructing an ADO.Net connection string (that is redistributable)?

    - by rathkopf
    I want to use a standard dialog to solicit user input of an ADO.net connection string. It is trivial to do for the oledb connection string as described here: MSDN Article on MSDASC.DataLinks().Prompt I've also found examples that use Microsoft.Data.ConnectionUI.dll and MicrosoftData.ConnectionUI.Dialog.dll from VS (HOWTO: Using the Choose Data Source dialog of Visual Studio 2005 from your own code). Unfortunately these DLLs are not licensed for redistribution. Is there a standard dialog for choosing a data source that can be distributed with my application?

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  • Java me : Can we retrieve bluetooth address of connected device from an open slave connection ?

    - by Rohit
    Here is a typical sequence of events that occur : Host device opens a service ( Host device accepts and opens all incoming connections) A remote device connects to host device. Now, we have a slave connection open at host device. At host device, I want to know the bluetooth address of remote device. I can always pass it as data from remote to host device, but can I extract it from connection object somehow without any data transfer? Thanks in advance...

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  • How can I check the network connection type using the Windows API?

    - by Jufkey
    How can I programmatically retrieve the current connection type (eg. LAN or Direct connection)? InternetGetConnectedState() isn't very reliable. For instance, I'm connected to a wireless network, but ConTypeRet is 18, which is INTERNET_CONNECTION_LAN & INTERNET_RAS_INSTALLED. Isn't there any way to make sure that ConTypeRet is either INTERNET_CONNECTION_LAN or INTERNET_CONNECTION_MODEM?

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  • How to prevent Android bluetooth RFCOMM connection from dying immediately after .connect()?

    - by Gilead
    I'm trying to connect to a Zeemote (http://zeemote.com/) gaming controller from Moto Droid running 2.0.1 firmware. The test application below does connect to the device (LED flashes) but connection is dropped immediately after that. I can connect to the device perfectly fine using bluez tools (log attached as well). I'm quite at a loss here, I work on it for so long that I ran out of ideas so any help would be very much appreciated. Thanks, Max =========================================== Code: public class ZeeTest extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); try { test(); } catch (IOException e) { e.printStackTrace(); } } public void test() throws IOException { BluetoothDevice zee = BluetoothAdapter.getDefaultAdapter(). getRemoteDevice("00:1C:4D:02:A6:55"); Log.d("ZeeTest", "++++ Creating socket"); BluetoothSocket sock = zee.createRfcommSocketToServiceRecord( UUID.fromString("8e1f0cf7-508f-4875-b62c-fbb67fd34812")); Log.d("ZeeTest", "++++ Connecting"); sock.connect(); Log.d("ZeeTest", "++++ Connected"); final InputStream in = sock.getInputStream(); new Thread() { @Override public void run() { byte[] buffer = new byte[32]; int bytes = 0; int x = 0; Log.d("ZeeTest", "++++ Listening..."); while (x < 200) { x++; try { bytes = in.read(buffer); Log.d("ZeeTest", "++++ Read "+ bytes +" bytes"); } catch (IOException e) { // java.io.IOException: Software caused connection abort if (x % 50 == 0) { Log.d("ZeeTest", "Tried "+ x +" times ("+ bytes +")"); } try { Thread.sleep(100); } catch (InterruptedException ie) {} } } Log.d("ZeeTest", "++++ Done: thread exit"); } }.start(); Log.d("ZeeTest", "++++ Done: test()"); } } =========================================== Log: I/ActivityManager( 1169): Start proc zee.test for activity zee.test/.ZeeTest: pid=4294 uid=10084 gids={3002, 3001, 3003} I/dalvikvm( 4294): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=38) D/dalvikvm( 4287): LinearAlloc 0x0 used 640700 of 5242880 (12%) I/dalvikvm( 4294): Debugger thread not active, ignoring DDM send (t=0x41504e4d l=20) D/ZeeTest ( 4294): ++++ Creating socket D/ZeeTest ( 4294): ++++ Connecting E/BluetoothEventLoop.cpp( 1169): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/1240/hci0/dev_00_1C_4D_02_A6_55 I/usbd ( 1068): process_usb_uevent_message(): buffer = add@/devices/virtual/bluetooth/hci0/hci0:1 I/usbd ( 1068): main(): call select(...) E/BluetoothEventLoop.cpp( 1169): event_filter: Received signal org.bluez.Adapter:DeviceFound from /org/bluez/1240/hci0 V/BluetoothEventRedirector( 1242): Received android.bluetooth.device.action.FOUND V/BluetoothEventRedirector( 1242): Received android.bleutooth.device.action.UUID D/ZeeTest ( 4294): ++++ Connected D/ZeeTest ( 4294): ++++ Done: test() D/ZeeTest ( 4294): ++++ Listening... I/ActivityManager( 1169): Displayed activity zee.test/.ZeeTest: 2296 ms (total 2296 ms) E/BluetoothEventLoop.cpp( 1169): event_filter: Received signal org.bluez.Device:PropertyChanged from /org/bluez/1240/hci0/dev_00_1C_4D_02_A6_55 I/usbd ( 1068): process_usb_uevent_message(): buffer = remove@/devices/virtual/bluetooth/hci0/hci0:1 I/usbd ( 1068): main(): call select(...) V/BluetoothEventRedirector( 1242): Received android.bleutooth.device.action.UUID D/ZeeTest ( 4294): Tried 50 times (0) D/ZeeTest ( 4294): Tried 100 times (0) D/ZeeTest ( 4294): Tried 150 times (0) D/ZeeTest ( 4294): Tried 200 times (0) D/ZeeTest ( 4294): ++++ Done: thread exit =========================================== Terminal log: $ sdptool browse Inquiring ... Browsing 00:1C:4D:02:A6:55 ... $ sdptool records 00:1C:4D:02:A6:55 Service Name: Zeemote Service RecHandle: 0x10015 Service Class ID List: UUID 128: 8e1f0cf7-508f-4875-b62c-fbb67fd34812 Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 1 Language Base Attr List: code_ISO639: 0x656e encoding: 0x6a base_offset: 0x100 $ rfcomm connect /dev/tty10 00:1C:4D:02:A6:55 Connected /dev/rfcomm0 to 00:1C:4D:02:A6:55 on channel 1 Press CTRL-C for hangup # rfcomm show /dev/tty10 rfcomm0: 00:1F:3A:E4:C8:40 - 00:1C:4D:02:A6:55 channel 1 connected [reuse-dlc release-on-hup tty-attached] # cat /dev/tty10 (nothing here) # hcidump HCI sniffer - Bluetooth packet analyzer ver 1.42 device: hci0 snap_len: 1028 filter: 0xffffffff < HCI Command: Create Connection (0x01|0x0005) plen 13 > HCI Event: Command Status (0x0f) plen 4 > HCI Event: Connect Complete (0x03) plen 11 < HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2 > HCI Event: Read Remote Supported Features (0x0b) plen 11 < ACL data: handle 11 flags 0x02 dlen 10 L2CAP(s): Info req: type 2 > HCI Event: Command Status (0x0f) plen 4 > HCI Event: Page Scan Repetition Mode Change (0x20) plen 7 > HCI Event: Max Slots Change (0x1b) plen 3 < HCI Command: Remote Name Request (0x01|0x0019) plen 10 > HCI Event: Command Status (0x0f) plen 4 > ACL data: handle 11 flags 0x02 dlen 16 L2CAP(s): Info rsp: type 2 result 0 Extended feature mask 0x0000 < ACL data: handle 11 flags 0x02 dlen 12 L2CAP(s): Connect req: psm 3 scid 0x0040 > HCI Event: Number of Completed Packets (0x13) plen 5 > ACL data: handle 11 flags 0x02 dlen 16 L2CAP(s): Connect rsp: dcid 0x04fb scid 0x0040 result 1 status 2 Connection pending - Authorization pending > HCI Event: Remote Name Req Complete (0x07) plen 255 > ACL data: handle 11 flags 0x02 dlen 16 L2CAP(s): Connect rsp: dcid 0x04fb scid 0x0040 result 0 status 0 Connection successful < ACL data: handle 11 flags 0x02 dlen 16 L2CAP(s): Config req: dcid 0x04fb flags 0x00 clen 4 MTU 1013 (events are properly received using bluez)

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  • How to find other end of unix socket connection?

    - by depesz
    I have a process (dbus-daemon) which has many open connection over UNIX sockets. One of these connections is fd #36: =$ ps uw -p 23284 USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND depesz 23284 0.0 0.0 24680 1772 ? Ss 15:25 0:00 /bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session =$ ls -l /proc/23284/fd/36 lrwx------ 1 depesz depesz 64 2011-03-28 15:32 /proc/23284/fd/36 -> socket:[1013410] =$ netstat -nxp | grep 1013410 (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) unix 3 [ ] STREAM CONNECTED 1013410 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD =$ netstat -nxp | grep dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1013953 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1013825 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1013726 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1013471 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1013410 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1012325 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1012302 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1012289 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1012151 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011957 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011937 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011900 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011775 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011771 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011769 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011766 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011663 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011635 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011627 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011540 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011480 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011349 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011312 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011284 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011250 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011231 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011155 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011061 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011049 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011035 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1011013 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1010961 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD unix 3 [ ] STREAM CONNECTED 1010945 23284/dbus-daemon @/tmp/dbus-3XDU4PYEzD Based on number connections, I assume that dbus-daemon is actually server. Which is OK. But how can I find which process is connected to it - using the connection that is 36th file handle in dbus-launcher? Tried lsof and even greps on /proc/net/unix but I can't figure out a way to find the client process.

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  • How do I limit one connection per user for L2TP/IPSec using OpenSwan?

    - by Han
    I've successfully set up a VPN server with openswan, pppd, and xl2tpd on Ubuntu. Everything works great, but I'm having trouble finding out how to only allow one VPN connection per user listed in the /etc/ppp/chap-secrets file? Right now a user can have unlimited connections which is worrisome to me as I've shared access to the VPN with some friends but am worried they might keep spreading the username/password.

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  • Overhead of TLS/SSL on a TCP socket connection?

    - by TK Kocheran
    Is there any bandwidth overhead on using SSL on a TCP connection? I understand, of course, the processing/memory usage overhead in encrypting and decrypting packets, but as far as bandwidth is concerned, what is the difference, if any? For example, given a XML file which is 64KB, will there be any tangible difference in the transfer size of the file over HTTP vs. HTTPS? (Ignoring mod_deflate and mod_gzip, of course)

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  • (Enterprise GlassFish v3 build 11) Communication link problem (MySQL DB)

    - by user312853
    I get a communication link failure while application tries to establish a connection with DB. [#|2010-04-08T20:09:57.825+0300|SEVERE|glassfish3.0|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=24;_ThreadName=Thread-1;|Cannot connect to database server = com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.|#] Precisely at this string: Statement s = conn.createStatement(); where conn is defined as follows: private static java.sql.Connection conn; For this app I have set a connection pool with default parameters and currently it (app) uses both JPA and direct JDBC queries. Recreation of connection pool gave nothing, connection pool ping gave next message: Ping Connection Pool for pool is Failed. Ping failed Exce ption - Connection could not be allocated because: Communications lin k failure%%%EOL%%%%%%EOL%%%The last packet sent successfully to the s erver was 0 milliseconds ago. The driver has not received any packets from the server. Please check the server.log for more details.%%%EOL %%%Ping failed Exception - Connection could not be allocated because: Communications link failure and flushing the connection pool gave: com.sun.enterprise.admin.cli.CommandException: remote failure: Failed to flush connection pool ... However I can connect to the database from a terminal. Besides I have the same app working on my local machine with identical connection pool settings. Any one has an idea on whats going on or how to solve the trouble?

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  • Does VPN connection on virtual machine bypass host VPN?

    - by Daniel Valland Torgrimsen
    I wanted to see if i could channel my traffic trough two vpns, so as an experiment i set up a windows xp virtual machine in virtualbox (using NAT shared network setting), connected the host pc(windows 7) to a vpn, and then the virtual machine to another vpn. this seams to work fine. However, my question is, is the traffic sent trough both vpn servers, or is the virtual machines vpn bypassing the host machines vpn connection? thanks.

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