hc-httpclient-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Oleg Kalnichevski <ol...@apache.org>
Subject Re: Timeout on App Server - That goes away after restart
Date Tue, 01 Apr 2008 20:35:45 GMT

On Tue, 2008-04-01 at 11:01 -0700, Jonathan Hager wrote:
> We are using HttpClient (3.x) on an application server to call a web
> service.  This code has been deployed for over a year.  Yesterday,
> after the application server had been running for 12 days, we started
> getting connection time out errors.  Restarting the application server
> fixed the issue.
> 
> My question is, what if anything, is potentially cached at the
> application level (apparently the Http Client level its dependencies)
> that could cause the host to stop resolving.  For example, if the DNS
> changed for the server, is the DNS lookup cached at the VM level.

The resolved IPs are cached in the InetAddress class. For details see:

http://java.sun.com/j2se/1.4.2/docs/api/java/net/InetAddress.html 


> Alternatively, is the connection reused?
> 
> java.net.ConnectException: Connection timed out
>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
>         at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
>         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
>         at java.net.Socket.connect(Socket.java:452)
>         at java.net.Socket.connect(Socket.java:402)
>         at sun.net.NetworkClient.doConnect(NetworkClient.java:139)
>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:402)
>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:618)
>         at sun.net.www.http.HttpClient.<init>(HttpClient.java:306)
>         at sun.net.www.http.HttpClient.<init>(HttpClient.java:267)
>         at sun.net.www.http.HttpClient.New(HttpClient.java:339)
>         at sun.net.www.http.HttpClient.New(HttpClient.java:320)
>         at sun.net.www.http.HttpClient.New(HttpClient.java:315)
>         at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:521)
>         at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:498)
>         at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:626)
>         at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:272)
> 

Please note you are using HttpURLConnection here, not HttpClient

Oleg


> Thanks
> Jonathan
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> For additional commands, e-mail: httpclient-users-help@hc.apache.org
> 


---------------------------------------------------------------------
To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
For additional commands, e-mail: httpclient-users-help@hc.apache.org


Mime
View raw message