Re: [OT] Re: Tomcat hangs every few hours

2010-08-17 Thread sasidhar prabhakar
For months it is working properly. I tried that one also. Immediately after
hangs I accessed the url directly several times it is working.
Is that the only reason, I thought that but when accessed it is working. Is
there any other reasons.

On Tue, Aug 17, 2010 at 5:33 PM, Peter Crowther peter.crowt...@melandra.com
 wrote:

 On 17 August 2010 10:48, sasidhar prabhakar sasidhar1...@gmail.com
 wrote:

  In thread dump I observed every thread doing the same thing.
  In my code I sends sms to users by using HttpURLConnection.
  I am using this code for months I didn't get the problem earlier.
  For few days I am getting this problem consistently. Whenever tomcat
 hangs
  I
  takes the thread dump,
  every time it shows the same results.
 
  Here is my one of threads dump. this is common for all remaining threads.
 
  Somebody guide me to solve this problem. I am trying but unable to do
 this
 
  http-80-300 daemon prio=1 tid=0x76890ef0 nid=0x6bb6 runnable
  [0x6def..0x6def0db0]
 at java.net.SocketInputStream.socketRead0(Native Method)
 at java.net.SocketInputStream.read(SocketInputStream.java:129)
  [...]



at SendSms.sendToSingleRecipientNoNpri(SendSms.java:89)
 
 [...]

 The socket is hanging trying to read the response.  Your SMS provider
 probably isn't responding to you on occasion.  I assume you've written test
 code to do a SMS send; if not, write it and test the SMS send outside of
 Tomcat.

 This is not a Tomcat issue, so I've marked it [OT].

 - Peter



RE: [OT] Re: Tomcat hangs every few hours

2010-08-17 Thread Caldarale, Charles R
 From: sasidhar prabhakar [mailto:sasidhar1...@gmail.com]
 Subject: Re: [OT] Re: Tomcat hangs every few hours
 
 For months it is working properly.

Then something must have changed, either on the Tomcat system, or the server 
your webapp is trying to communicate with.  Try to find out what was altered.

 Is there any other reasons.

Possible that the code in your webapp is not handling the responses it's 
getting from the mail server.  Get Wireshark traces of the traffic between your 
webapp and the mail server and compare that with what the webapp is expecting.

 - Chuck


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Re: [OT] Re: Tomcat hangs every few hours

2010-08-17 Thread sasidhar prabhakar
I don't know what wireshark is can we install it in production servers. If
my webapp is not handling the responses what can I do.
Could you please suggest that.

On Tue, Aug 17, 2010 at 9:22 PM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

  From: sasidhar prabhakar [mailto:sasidhar1...@gmail.com]
  Subject: Re: [OT] Re: Tomcat hangs every few hours
 
  For months it is working properly.

 Then something must have changed, either on the Tomcat system, or the
 server your webapp is trying to communicate with.  Try to find out what was
 altered.

  Is there any other reasons.

 Possible that the code in your webapp is not handling the responses it's
 getting from the mail server.  Get Wireshark traces of the traffic between
 your webapp and the mail server and compare that with what the webapp is
 expecting.

  - Chuck


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RE: [OT] Re: Tomcat hangs every few hours

2010-08-17 Thread Caldarale, Charles R
 From: sasidhar prabhakar [mailto:sasidhar1...@gmail.com]
 Subject: Re: [OT] Re: Tomcat hangs every few hours
 
 I don't know what wireshark is

www.wireshark.org

Equivalents are available for whatever platform you're running on.

 If my webapp is not handling the responses what can I do.

Fix your webapp.

 - Chuck


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