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: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
