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Posted to users@tomcat.apache.org by Peter Crowther <pe...@melandra.com> on 2010/08/17 14:03:42 UTC
[OT] Re: Tomcat hangs every few hours
On 17 August 2010 10:48, sasidhar prabhakar <sa...@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
> [0x6def0000..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
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: sasidhar prabhakar [mailto:sasidhar1229@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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Re: [OT] Re: Tomcat hangs every few hours
Posted by sasidhar prabhakar <sa...@gmail.com>.
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.Caldarale@unisys.com> wrote:
> > From: sasidhar prabhakar [mailto:sasidhar1229@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
>
>
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
> MATERIAL and is thus for use only by the intended recipient. If you received
> this in error, please contact the sender and delete the e-mail and its
> attachments from all computers.
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
RE: [OT] Re: Tomcat hangs every few hours
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: sasidhar prabhakar [mailto:sasidhar1229@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
Posted by sasidhar prabhakar <sa...@gmail.com>.
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.crowther@melandra.com
> wrote:
> On 17 August 2010 10:48, sasidhar prabhakar <sa...@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
> > [0x6def0000..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
>