Keep wifi connection alive

Hi. I've noticed that after moving from opensuse to arch, my wifi connection dies on me after inactivity. I've tried this workaround:
* Add a crontab to ping a website every 15 minutes. I'm using this command:
* ping -c 4 www.google.com
However, the connection still dies. Is there a better way to keep my connection alive? Perhaps if I increase the number of packets?

As per this ubuntu forum post, I found something that might do the trick
http://ubuntuforums.org/showthread.php?t=420959
Adapted to arch, this may work:
#!/bin/sh
HOST=www.google.com
ping -c 1 -W 10 $HOST &>/dev/null
if [ $? -eq 0 ]; then
#ping is ok
exit
else
#first try
ifconfig wlan0 down
sleep 3
ifconfig wlan0 up
sleep 10
ping -c 1 -W 10 $HOST &>/dev/null
if [ $? -eq 0 ]; then
exit
else
#second try
/etc/rc.d/wlan restart
/etc/rc.d/network restart
iwconfig wlan0 essid NOAH_S_ARK
sleep 10
ping -c 1 -W 10 $HOST &>/dev/null
fi
fi
The corresponding root crontab entry to run it every 20 minutes is
*/20 * * * * <nameofscript>
Gonna try when I get home.

Similar Messages

Please Help - To keep LDAP connection alive

Hi,
I have used the below function to communicate with LDAP which I have taken and modified from one of the posts in this forum.
My issue is, each time the function opens a connection, search and closing the connection and its seriously affects the performance.
I hope we can resolve this by keeping the connection alive. As I am new to this concept, I am not sure how to do this.
It would be great, if some one help me to keep the connection alive for the below function. Thanks in advance.
create or replace FUNCTION <name> (loginname VARCHAR2)
RETURN NUMBER
IS
-- Adjust as necessary.
l_ldap_host VARCHAR2(256) := '';
l_ldap_port VARCHAR2(256) := '';
l_ldap_user VARCHAR2(256) := '';
l_ldap_passwd VARCHAR2(256) := '';
l_ldap_base VARCHAR2(256) := '';
l_retval PLS_INTEGER;
l_session DBMS_LDAP.session;
l_attrs DBMS_LDAP.string_collection;
l_message DBMS_LDAP.message;
l_filter varchar2(35):='xxxx='|| loginname;
l_count NUMBER:=0;
BEGIN
-- Choose to raise exceptions.
DBMS_LDAP.USE_EXCEPTION := TRUE;
-- Connect to the LDAP server.
l_session := DBMS_LDAP.init(hostname => l_ldap_host,portnum => l_ldap_port);
l_retval := DBMS_LDAP.simple_bind_s(ld => l_session,dn => l_ldap_user,passwd => l_ldap_passwd);
-- Get attribute
l_attrs(1) := 'xxxx';
l_retval := DBMS_LDAP.search_s(ld => l_session, base => l_ldap_base, scope => DBMS_LDAP.SCOPE_SUBTREE, filter => l_filter, attrs => l_attrs, attronly => 0, res => l_message);
l_count:=DBMS_LDAP.count_entries(ld => l_session, msg => l_message);
-- Disconnect from the LDAP server
l_retval := DBMS_LDAP.unbind_s(ld => l_session);
return l_count;
EXCEPTION
WHEN OTHERS THEN
dbms_output.put_line('Error :'||SQLERRM);
return 0;
END <fun name>;
Thanks,
Praveen
Edited by: 920577 on Mar 13, 2012 9:40 AM
Edited by: 920577 on Mar 13, 2012 9:41 AM

The basic template looks as follows:
SQL> create or replace package Foo as
2
3 procedure LdapLogoff;
4 function GetData( empName varchar2 ) return number;
5
6 end;
7 /
Package created.
SQL>
SQL> create or replace package body Foo as
2
3 isLoggedOn boolean;
4
5 procedure LdapLogon is
6 begin
7          DBMS_OUTPUT.put_line( '..running logon()' );
8          isLoggedOn := true;
9 end;
10
11 procedure LdapLogoff is
12 begin
13          DBMS_OUTPUT.put_line( '..running logoff()' );
14          isLoggedOn := false;
15 end;
16
17 function GetData( empName varchar2 ) return number is
18 begin
19          if not isLoggedOn then
20                  LdapLogon();
21          end if;
22
23          DBMS_OUTPUT.put_line( '..running GetData() for '||empName );
24          return(
25                  round(DBMS_RANDOM.Value(1,100))
26          );
27 end;
28
29
30 --// main()
31 begin
32          DBMS_OUTPUT.put_line( 'Package Foo loaded into memory' );
33          isLoggedOn := false;
34 end;
35 /
Package body created.
SQL>
SQL>
SQL> select empno, ename, Foo.GetData(ename) as ID from emp order by empno;
     EMPNO ENAME              ID
      7369 SMITH              23
      7499 ALLEN              47
      7521 WARD               88
      7566 JONES              71
      7654 MARTIN             91
      7698 BLAKE              28
      7782 CLARK              92
      7788 SCOTT              91
      7839 KING               48
      7844 TURNER             89
      7876 ADAMS              64
      7900 JAMES              16
      7902 FORD               18
      7934 MILLER             35
14 rows selected.
Package Foo loaded into memory
..running logon()
..running GetData() for SMITH
..running GetData() for ALLEN
..running GetData() for WARD
..running GetData() for JONES
..running GetData() for MARTIN
..running GetData() for BLAKE
..running GetData() for CLARK
..running GetData() for SCOTT
..running GetData() for KING
..running GetData() for TURNER
..running GetData() for ADAMS
..running GetData() for JAMES
..running GetData() for FORD
..running GetData() for MILLER
SQL>
SQL> select empno, ename, Foo.GetData(ename) as ID from emp where rownum = 1;
     EMPNO ENAME              ID
      7369 SMITH               9
..running GetData() for SMITH
SQL>
// call Foo.Logoff manually when done, or leave it to
// Oracle to close and release resources when the
// session terminates

ADK - Keeping EIS Connections Alive

Hi,
          I am using the ADK that comes with WL 8.1 SP3. The challenge I am facing is to keep my connections alive while there is no activity (at the TCP/IP socket level) between the app server and the EIS.
          The EIS closes any sockets after 30 minutes of inactivity causing the connections to go into CLOSE_WAIT state.
          Is there any method I can use within the connector to keep pinging the server and make sure these connections have TCP/IP traffic?
          Has anyone used the <test-frequency-seconds> weblogic-ra.xml? What is its purpose? pinging?
          Appreciate your insight..

Hi
          I have a requirement, which is some what similar to what is mentioned above.
          I too have to ping the interface at regular intervals to keep the connection alive. I also assumed that, we can use the test-frequency-seconds attribute. But for that to work, we have to implement the interface, http://java.sun.com/j2ee/1.4/docs/api/javax/resource/spi/ValidatingManagedConnectionFactory.html, which is there only from weblogic 9.
          But since our client is using weblogic 8.1, we are tied to that version.
          Can anyone please assist in solving this.

HT201653 after downloading 8.1.1 I have trouble connecting and keeping wifi connection on ipad 4

after downloading 8.1.1 I have trouble connecting and keeping wifi connection on ipad 4

I also reset the network connection. Rebooted it, used forget network and started over, I did everything that Apple said and it still doesn't connect most of the time but my iphone 5c and my laptop works great on wifi.

How to keep the connection alive?

Hello! Happy new year!
I have to write an HTTP server that comunicates with many clients in the same time,but keeps the connection with a client open if there the corresponding header is Keep-Alive. I have used threads,and I've tested my program in the following way: I've requested the one page of the site and then I've followed a link from that page. I expected that the broowser and the server talk to the same thread every time,but it seems that they don't. The code I've written is:
//HTTPServer class
ServerSocket serverSocket = null;
        boolean listening = true;
        try {
            serverSocket = new ServerSocket(80);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 80.");
            System.exit(-1);
        while (listening)
              new HTTPMultiServerThread(serverSocket.accept()).start();
//HTTPMultiServerThread
public void run() {
     //     System.out.println(socket.toString());
          try {
while(!serverSocket.isClosed())){
              DataOutputStream out = new DataOutputStream(socket.getOutputStream());
              DataInputStream in = new DataInputStream( socket.getInputStream());
              int nrBytes = in.available();
              if(nrBytes > 0){
                   byte[] bytes = new byte[nrBytes];
                   in.read(bytes);
                   System.out.println("Procesez mesajul:" + nrBytes + new String(bytes));
                   HTTPMessage processedMess = new HTTPMessage(bytes).processMessage();
                   System.out.println("Inchid conexiunea.");
                    log("log.txt", new HTTPMessage(bytes).getStatusLine() + " " + new Data().getCurrentTime());
               //send the message
out.write(processedMess.getBytes(),0,processedMess.getBytes().length);
                   /* inchid conexiunea
              else{
                   String ret = new String("HTTP/1.1 500 Internal Server Error\n");
                    ret += "Host: cristi\n";
                  ret += "Date: " + new Data().getCurrentTime()+"\r\n";
                  ret += "\r\n";
                  ret += "<html><body><p>HTTP/1.1 500 Internal Serve Error</p> </body><html>\r\n";
                  out.write(ret.getBytes());
              out.close();
              in.close();
                   if(new HTTPMessage(bytes).getHeaderValue("Connection").equals("Close"))
              socket.close();
     }//end while
          } catch (IOException e) {
              e.printStackTrace();
    }I would also like to know how many clients are waiting to be served,in order to develop statistics about the server response time. 10X

hi
same to u .
i think what i get from ur code that ....
use some vector at the server side and whenever any client is connected (offcourse first time or not (depend on u !!)) create an object corresponding(generally created by server for every client) ..
save this in the vector .. and pass it the size of vector to the client with the response .
may this help u .
regards
akash
Indiagames Ltd
[email protected]
India

Keep JDBC connection alive

Hi,
I am running into problem with JDBC connection outside of the firewall. The firewall disconnect idle connection after 15min. Is there a way to keep JDBC alive for
as long as the application is running?
Thanks,

Notwithstanding connection pools generally managed by an application server, I would not advocate keeping a connection open beyond the immediate need for it. Certainly there is a performance cost to open a connection and that must be weighed against the potential for orphaned resources by leaving a connection in a trapped state. Personally I have never found an overriding NEED to keep a connection open beyond the method where the connection was first opened.
Using a connection pool makes the cost even less to open and release connections on an as needed basis.
Just my 2 krupplenicks worth, your mileage may of course vary.
PS.

I am having trouble keeping wifi connection on my ipad2 and iPhone 5. AT

I Am having trouble keeping my wifi connection on iPhone 5 but especially ipad2. Have had IPad checked out and is fine. At
&T has changed the router 3 times but no help. Will a different router other than AT&T solve this problem and if so, which one.

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at
http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are drooping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Fix WiFi Issue for iOS 7
http://ipadnerds.com/fix-wifi-issue-ios-7/
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
iPad: Issues connecting to Wi-Fi networks
http://support.apple.com/kb/ts3304
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.hmL
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Signal.htm
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
10 Ways to Boost Your Wireless Signal
http://www.pcmag.com/article2/0,2817,2372811,00.asp
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How to Change Your iPhone’s (iPad’s) DNS Servers
http://www.macinstruct.com/node/558
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Freeware utilities for keeping network connection alive?

Hi, I am wondering if anyone has recommendations for a freeware utility that can keep the network connection alive on my 2010 mac mini.
Already have sleep, screen saver, and password lock turned off. Also using static IP.
When it sits for a while I can no longer ping it from my PC workstation or use iTunes, VNC etc from my phone.
When I open up the mac, which I am using as HTPC, it will connect right away to Google etc using Safari yet it has dropped the share connection to my PC.
Thanks! Sean

Thanks for the report!

Mail.app keeping IMAP connections alive and active

Hi all,
I was having some issues with the MySQL databases on my website, so I gave my hosting provider a call.
It seems that Mail.app is opening up an IMAP process for each of my 24 e-mail accounds, and keeping it alive for as long as Mail is running. According to the representative I spoke with, e-mail clients, even with IMAP should start a process, synchronize the mail, and close the process, and all of this should happen in around 0.2 seconds.
The problem is that there is a cap of 20 processes on my hosting server, so Mail's behavior is basically causing lots of problems - as long as mail is open and all of my accounts are enabled, my website can't access my MySQL databases.
Does anyone know of a solution to this problem? I used to have "Automatically synchronize mailboxes checked" and tried unchecking this for troubleshooting purposes, but the same thing still happens.
Any ideas or suggestions will be very appreciated.
Thanks!

From what I've read, imap is designed to create a persistent connection, and keep it open until you quit the program.
But there's another problem which might be getting in your way: mail.app does indeed create persistent connections, but then rather than re-using them, it seems to open another new persistent connection each time it checks the mail. So the processes never close, and they start to pile up as new ones are added.
What's more, mail opens multiple connections per account. Looks like it opens 4 connections to check each separate account, and those all get left open until you quit the program.
The reason they do this is, so they say, "performance". More connections = faster mail. But it's a real headache when it doesn't close old processes before opening new ones.
Also an option to limit the number of connections made per account would be welcome.
Thunderbird does exactly the same thing, by the way.

IOS6 on iphone 4S. My phone keeps disconnecting from my wifi. I have to input the password each time. The only way i can keep wifi connected is to disable cellular data....what's with this????!!!!!

I downloaded IOS6. The next day my iphone was not connecting to wifi. I reset network connections...put in my password and voila it worked!....But then it dosconnected again..and again...and again....my wifes iphone 4 is not having this problem and she also installed IOS6. The only way I can stay connected to wifi is if i disable my cellular data. What is going on???...Anyone?......

Is it a BT Yahoo account? If so, there have been quite a few threads about Yahoo constantly rejecting passwords, with no clear fix.
That said, I did see someone post that they'd resolved the problem by eliminating any capital letters from the password. After that it stopped asking for passwords and started working, apparently. One or two others tried the 'fix' and seemed to have the same success. At least they haven't come back to say it had gone wrong again.

Keep database connection alive

I'm developing a windows desktop (standalone) application which runs as an endless loop.
Once the application started, a database connection is created (java.sql.Connection) and from now on used to read data from the database.
Connection is created like this:
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection con = DriverManager.getConnection(connectionUrl);
Does the connection will be kept alive forever?
If NOT, what to change in my program?
Edited by: user10511764 on Jun 26, 2011 4:47 AM

If you are going to be continually using your JDBC connection, then you don't
really need to go to the added complexity of using pooling. Just use the connection
indefinitely, and unless there is some DBMS or firewall configured lifetime limit,
barring error, the connection should be fine indefinitely. If you get an occasional
failure, just make a new connection. A pool won't do any better, and if/when it
makes a new connection for you, you will have to re-obtain all your statements
etc, just as if you remade your own connection...

I can keep wifi connection live

Hi, I hope some can help me, every time I connect to my wifi (the logo apear in the menu bar and the wireless indicator in my modem turns on), then when I open the safari, the wifi logo dissapears and appear the E edge logo (but the wireless indicator in my moden remain on).
The internet navigation is very slow.

How to connect i5 to 4s via wifi

How to keep NetStream.Connect alive even when noone is connected?

is there any timeout set for NetStream.Connect? I am having an issue when one streamer goes to 2way channel and waits for another party to join but after about 1 minute (if noone is receiving that streamer signal) the NetStream.Connect.Close event is fired up. I want to be able to wait little bit longer.
Any help much appreciated.

Dear Alll,
Please help.

I updated my iphone and when it came time for activation it won't work and keeps telling me to try again. At the top it says "No Service" and I have my SIM card in and a good WiFi connection and have connected it through iTunes but it says I have no SIM

I updated my iphone and when it came time for activation it won't work and keeps telling me to try again. At the top it says "No Service" and I have my SIM card in and a good WiFi connection and have connected it through iTunes but it says I have no SIM card and need to disconnect and insert my SIM. I don't understand why this keeps happening and it's been going on for a wile now. I have tried over and over again to get this iPhone to work but nothig is happening. I've even gone on the website for support (apple.com/support) but cannot find anything that will help me with this situation. Can someone please help me find a solution to this problem? I have been without a phone and do not have money to buy another one and it is crucial for me to get it fixed. Thanks.

wesb
What computer operating system is involved in the Premiere Elements 11 and 13 issues? Same computer or different ones? Are you installing from purchased download installation files or from purchased installation disc? Does Premiere Elements 11 work completely on this computer whereas 13 will not?
Let us go through the typical drill so as to take nothing for granted.
1. Does the problem exist with or without the antivirus and firewall(s) disabled? Are you working with an individual home computer or in a
school or company network?
2. Are you running the program as Administrator and is there any "domain" account involved?
3. Is your video card/graphics card up to date according to the web site of the manufacturer of the card?
4. Do you have the latest version of QuickTime installed on the computer with Premiere Elements?
Let us start by ruling in or out any of the above, and then we can decide what next.
Any questions or need clarification, please do not hesitate to ask.
Thank you.
ATR

HP OfficeJet Pro 8500A Plus - Wifi connection keeps being lost??

Hi - please can someone help?
HP OfficeJet Pro 8500A Plus all-in-one printer - connected at home to laptop via cable (works fine) and PC (Windows Vista) via router and wifi.
Wifi is enabled and connected (light on printer on). Printer is set on PC as default. Printer has previously worked with these settings perfectly fine via the PC, but has lately developed intermittant dropping of the wifi connection.
Sometimes a PC reboot works, but this is tedious and should not be necessary - does anyone have any thoughts on why this keeps happening and some things I could try to reset - have done all what I thought were obvious steps, such as reseting the wifi network via the printer. Everything works for a short while and then just stops.???

Hi,
Please refer the link below to troubleshoot the issue.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02817031&tmp_task=solveCategory&cc=us&dlc=en&ju...
Although I am an HP employee, I am speaking for myself and not for HP.
--Say "Thanks" by clicking the Kudos Star in the post that helped you.
--Please mark the post that solves your problem as "Accepted Solution"

Keep wifi connection alive

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