Set HTTP Connection timeout to avoid Deny Of Service attack

Hi,
Is there a way to set a HTTP Connection timeout in Sun Java Application Server Platform Edition ?
I need this because many clients are holding an HTTP Connection too long on my Application Server causing a Deny Of Service because of file descriptor leak.
Regards,
Laurent.

All,
At the application server level, there is a timeout setting in httpd.conf. The default value has been set to 300 seconds.
Regards,
Suhas.

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HTTP Connection timeout setting

Hi,
I'm using ebXML protocol for B2B 10.1.2.3+MLR 5.
I talk to multiple trading partners and when one of the TP is down, we see that there is a pileup of messages in the backend queues.
This is because, there is constant message inflow into the JMS queues by the back-end application and each message is taking a long time to timeout (nearly 20 seconds). So what effectively happens is that a message was supposed to reach the TP in 1 sec will take 20 sec before it labels as a HTTP connection timeout error .
Can we set the HTTP Connection timeout setting in B2B? (I saw a setting in B2BGurus for EDI though)
If not, please can you suggest if it can be set in the Application Server level?
Please help!
Thanks in advance,
Warm Regards,
Suhas.

All,
At the application server level, there is a timeout setting in httpd.conf. The default value has been set to 300 seconds.
Regards,
Suhas.

Http connection timeout for business services from proxy service?

I've only done limited experiments in ALSB (2.1) at this point, but a question occurred to me, and I can't find this mentioned in the docs anywhere.
When a proxy service configures a connection to a downstream business service through HTTP, is it possible to configure an http connection timeout value? This will cause the connection attempt to fail if it takes too long to determine whether the connection attempt succeeded or failed.
I've heard that this is one advantage that Axis has over JAXRPC/SAAJ, as a connection timeout value can be specified.

Hello Billy
Thanks for the reply. I thought there may be some implementation of begin_request in another environment that had the option to specify a connect timeout. But as you have explained, it doesn't work like that. As always, I learn something every day!
So realistically if I want to stop the calling process hanging in the event of the server not being available, I need use the message based approach...send a message containing the request to another process via a message queue and attach to the reply queue and wait for a message comming back with a timeout. Does that sound like a reasonable approach?
Thanks
David

Help Set Proxy connection timeout

Hi,
I'm currently using: mysock.connect(sockaddr, 2000);
to set socket connection timeout.
Everything works fine until i set a proxy:
System.setProperty("socksProxySet", "true");
System.setProperty("socksProxyHost", "proxy");
System.setProperty("socksProxyPort", "port");
Can i also set connection timeout for the proxy?
Message was edited by:
Robotto

Everything works fine until i set a proxy:are you not able to connect to the server? Whats the issue?

How to set TCP connection timeout in solaris 9

Hello All,
I am new to solaris. While using oracle, sometimes I face tcp connection timeout.
The timeout happens after a long delay like more than 8 min. I want to reduce the tcp connection timeout to 2 min in solaris.
Please help me to change this setting.
My current configuration is
SunOS testmachine 5.9 Generic_122300-13 sun4u sparc SUNW,Sun-Fire-V440
Thanks
Purushoth

There's a fair amount of tunables. Without known what is timing out (dns, lost packet...), it's hard to say what you want to tweak. The list of parameters can be seen by using ndd:
ndd /dev/tcp \?
or
ndd /dev/ip \?
and can be set by using ndd -set (see ndd(1M) ). Note that anything you set has to be reset on reboot, so you have to stick this in a script somewhere, or know what the variable translates to to stick it into /etc/system.
-r

HTTPS connections timeout with Security Update 2010-001

I recently installed Security Update 2010-001 onto Snow Leopard and have difficulty accessing certain web sites from my browser (I have tried with both Safari and Firefox and they have the same problem). The issue in common with the problem sites is that they use akamai mirror servers to deliver their content over HTTPS connections. I can see from the Activity window that the redirected HTTPS connections to the akamai sites just hang and eventually timeout. This is new behaviour since installing the security patch and I was wondering if the Open SLL update in the security patch may have caused these connections to hang? Anyone have any idea (or where I could find out?)
P

I recently installed Security Update 2010-001 onto Snow Leopard and have difficulty accessing certain web sites from my browser (I have tried with both Safari and Firefox and they have the same problem). The issue in common with the problem sites is that they use akamai mirror servers to deliver their content over HTTPS connections. I can see from the Activity window that the redirected HTTPS connections to the akamai sites just hang and eventually timeout. This is new behaviour since installing the security patch and I was wondering if the Open SLL update in the security patch may have caused these connections to hang? Anyone have any idea (or where I could find out?)
P

Set URL connection timeout

How do I adjust the timeout for connection to a URL?
The timeout BEFORE Firefox reports 'not found'

There is no setting in Firefox for that. You need to change a tcpip parameter in the Registry.
http://drewthaler.blogspot.com/2005/09/changing-dns-query-timeout-in-windows.html
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DNSQueryTimeouts
Multi String: "1 2 2 4 8 0" -> "4 8 8 16 32 0"

Set URL connection timeout Windows 7

How do I adjust the timeout for connection to a URL?
The timeout BEFORE Firefox reports 'not found'
I found only a Tutorial for Windows XP:
http://drewthaler.blogspot.ro/2005/09/changing-dns-query-timeout-in-windows.html

# In the [[Location bar autocomplete|Location bar]], type '''about:config''' and press '''Enter'''. The about:config "''This might void your warranty!''" warning page may appear.
# Click '''I'll be careful, I promise!''', to continue to the about:config page.
# Modify "network.http.keep-alive.timeout" parameter (the default value is 115)
# Restart Firefox.

Set connection timeout in LightSwitch HTML

Hi.
I am creating Lightswitch HTML application and implementing export functionality using ServerApplicationContext.
I am trying to export a lot of data and i when i call for DB objects I get connection error. I have tried to set ;Connection Timeout=300 in connection string in web.config but it seams like not functioning, and still failing after 30sec.
Can you please guide me where can I set a connection timeout in order to change it's default value from 30 sec to something bigger?

Igor,
I think what you are looking for is "CommandTimeout" and not connection timeout. The connection timeout is how long the SQL Client will wait while establishing a connection. A command timeout is how long the SQL Client will wait for a command to complete.
So if you are executing a long running command, you will run into command timeout issues.
In order to set the command timeout for your SQL data source, add a "key" to your web.config's <appSettings> node of the following form:
<appSettings>
<add key="DataSourceName_CommandTimeout" value="60" />
</appSettings>
Replace DataSourceName with the name of your data source. So if you are using the ApplicationData data source, the key would be named "ApplicationData_CommandTimeout". Look in your Solution Explorer under "Data Sources" for the name of your
data source.
The value is the number in seconds for the timeout.
Eric
http://blogs.msdn.com/b/eric_erhardt/

Possible to configure per connection timeout values?

hi,
please, does anybody know how (or whether or not it is even possible) to configure a "PER CONNECTION" timeout on the connections - created by jndi - to an ldap server?
my understanding is that setting the "com.sun.jndi.ldap.connect.timeout" property on the javax.naming.directory.InitialDirContext sets a _global_ timeout value for _all_ connections created/managed by that InitialDirContext (that is, with a "PER CONTEXT" scope).
however, what i would like to do instead, is somehow configure a different timeout value for each individual connection that a InitialDirContext might know about.
the first solution that will probably pop in your head is "connection pool". however, the app sets "java.naming.ldap.factory.socket" property to a custom socket factory class. according to the following paragraph from the jndi tutorial, that disqualifies the app from using connection pools:
"There are a couple of environment properties that automatically disqualify a Context instance from using a pooled connection. A Context instance cannot use a pooled connection if it has its "java.naming.ldap.factory.socket" property set to a custom socket factory class, or its "java.naming.security.sasl.callback" property set to a custom callback handler class, or its "com.sun.jndi.ldap.trace.ber" property set to enable protocol tracing."
http://java.sun.com/products/jndi/tutorial/ldap/connect/config.html
even if we could use connection pools, we still wouldn't be able to set "per connection" timeout values. would we?
one proposed solution is to completely rip out jndi from the app and replace it with the netscape directory sdk for java. to me, that seems like too drastic a measure though - given the project's time-constraints (the way the app was originally designed does not lend itself to a straight-forward "pop-out/drop-in" type replacement). i was hoping there would be a simpler alternative (a jndi-based configuration type solution, for example).
any suggestions would be gratefully appreciated. thanks in advance for your replies.

Enable the Default Host option in the AirPort Admin Utility, use the IP address you have assigned to your server.

How does inactive connection timeout attribute in weblogic works ?

Lets say If there is a connection leakage in my application running on weblogic server 10.3.4 and I want to regain the unclosed connection.
After going through some documentation I found out that setting inactive connection timeout to a positive value can fix this issue.
With setting the above attribute will the weblogic server close any connection object which is inactive for specified number of seconds or it acts on only
those connection objects which has lost all the references to it ?
demonstrating the query by an example ,
Lets say I have two connection objects con1 & con2 taken from a defined datasource in the weblogic.
the inactive timeout has been set to 10 seconds.
In a given thread lets say con1 does some db operation and then after being done, con2 is used for another db operation for greater than 10 seconds.
Will the object con1 be still available for db operation or we need to take a fresh connection from the pool ?
Thanks,
Tarique
Edited by: user779368 on 30-May-2011 06:29

Any connection that has been reserved by an application, and not used for longer than
the inactive timeout limit, will be taken back by the pool. All it's sub-objects will be closed etc.
In your case, you would lose con1 while con2 was being used. Ideally, you would get
any/either of those connections at the instant you really need it. Then, ideally use it
till you can close it. But if you are doing transactions or a job that need connections,
but can't avoid having them idle for X seconds, then set your inactive timeout larger than X.

Stop connection timeouts from happening - want the page to wait

I run multiple tab that monitor various tools. These pages refresh themselves. The pages have to wait for each other to finish before they can start.
In version 28 this was fine. The page would just wait indefinitely and kick in when a previous page finished doing its thing.
Now in version 29 it returns with a "The connection has timed out" message after some minutes.
I have adjusted
network.http.connection-timeout
network.http.pipelining.read-timeout
to high values but problem is still occurring. Any thoughts on how I can return the behavior to FF28?

I can confirm that this setting works.
Either setting it to 0 or a very large number returns the behavior to previous.
http.response.timeout = 0
or
http.response.timeout = 300000
My scripts now do no time out when waiting.
Thanks.

Tomcat 4.1:connection timeout error

Hi. I got a HTML form that allows a user to enter freehand SQL statements and send them to an DB2 database via a SQL Java servlet. After the query executes, it returns an Excel file containing the resultset of my query. Unfortunately, I got a query that when executed, my browser returns "The page could not be found..." due to connection timeout. With another query with different set of criteria, it runs fine-so my Tomcat is running fine. I've executed the same exact query in Excel via JDBC-ODBC bridge Java application and it ran fine and also executed the same query in QMF for Windows, and it ran fine also. So this lends me to believe I need to configure my Tomcat somehow, I presume the connection timeout limit.
Is there a way to remove or increase the connection timeout limit?
Thanks in advance.

Arrrggg!!! That didn't work. Here's the error message:
"The page cannot be displayed There is a problem with the page you are trying to reach and it cannot be displayed.
Please try the following:
Click the Refresh <javascript:location.reload()> button, or try again later.
Open the home page, and then look for links to the information you want.
If you believe you should be able to view this directory or page, please contact the Web site administrator by using the e-mail address or phone number listed on the home page.
10060 - Connection timeout
Internet Security and Acceleration Server
Technical Information (for support personnel)
Background:
The gateway could not receive a timely response from the Web site you are trying to access. This might indicate that the network is congested, or that the Web site is experiencing technical difficulties.
ISA Server: MMPINF17
Via:
Time: 1/27/2003 1:04:11 PM GMT"
Does this mean my company's firewall administrator has set a connection timeout limit? Or is it still my Tomcat's configuration?

How to handle a Connection Timeout

Hi Everybody,
My situation is as follows: I have a web application, some sort of content management system. I'm using MySQL to store information. The application is obtaining Connection objects via a Connection Pool. I'm runngin Sun Java Application Server 8 Update 1 and MySQL 4.1.9 on a Windows 2003 Server machine.
After 8 hours of inactivity, the system it's raising an exception. Searching the log, I've found the cause, an SQL Exception with a "recv failed" error. Google said that MySQL shuts the idle connections after 8 hours, and also found a code to correctly handling that disconnection. The thing is that the Application Server is handling the connection pool to physically connect with the database, I'm not dealing with connection setup. I've tried setting autoReconnect and autoReconnectForPools properties (in the management console) without success.
Anyone has any idea to correct this?
Thanks in advance for your time.
Best regards
Antonio Varela.

You could execute a query from time to time, but you can't control which connection is being used. For example, you could be accessing the same connection all the time, and in the end only one functioning connection would remain in the pool.
As said in another thread,
The problem (in detail) is how the MySQL JDBC driver operates. The physical connection to the database can fail, but the Connection.isClosed() method will still return false.
So, there seems to be some problem with the MySQL driver.
But even in this case, the "connection validation" options should work on the application server, which they just don't. I am inclined to blame this problem on the connection pool implementation.
The only "solution" I found so far was to set larger connection timeouts on the MySQL server:
interactive_timeout = 2764800
wait_timeout = 2764800

Database connection timeout

We have successfully developed reports in CR XI and have been testing these reports on our website. All the tests had been going great until we realized that if the server was down we received a timeout error and then a connection information box asking for the connection information i.e. Server, User Id, Password, Database etc.. We obviously do not want our customers to see this information.
My question is, what can we do to prevent them from seeing this information when the connection to the database server is not online? Our first thoughts where to do something in the report to simulate a request for something with no data. That doesnt seem to work. Any ideas would be helpful.
We are using a OLE DB (ADO) connection.

Hi Tom
Set the "Connect Timeout" property a larger value, or just set it to 0, which means no limit for timeout. This property is available while creating report and also in the Set Data Source Location you can edit the Connect timeout.
Hope this helps!
Thanks

Set HTTP Connection timeout to avoid Deny Of Service attack

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