On 06/12/2007, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Hi Sebastian, > > shooting from the hip... > > The TIME_WAIT state indicates that the connection > was orderly closed. If a connection (of HttpClient) > remains open when the JVM exits, it is force-closed > by a reset and does not enter the TIME_WAIT state.
I was wondering about that myself. > > Example 4: http://www.google.com/ auto-redirect=true, keep-alive=true > > [Redirects to www.google.co.uk] > > > > HttpClient leaves a connection to www.google.com in TIME_WAIT > > Java leaves connections to both www.google.com and www.google.co.uk in > > TIME_WAIT > > HttpClient connects to www.google.com and receives > a redirect. The method director returns the open > connection to the SimpleHttpConnectionManager, which > consumes the response body. The socket is kept open > until the method director obtains the connection for > the redirect. Then it is orderly closed, bringing it > into TIME_WAIT state. A new socket is used to read > from www.google.co.uk. Because of the keep-alive, > that socket remains open until the JVM exits. > > Explaining the behavior of Java HTTP is a bit > trickier. Either their keep-alive strategy closes > sockets that HttpClient keeps open, or they use > a shutdown hook to orderly close connections when > the JVM exits. If HttpClient (or my app) is failing to close sockets at the end, perhaps it needs to be enhanced - otherwise it will be causing the server to go into TIME_WAIT instead? AIUI, one end or the other must go through TIME_WAIT; normally it is better for the client to do so. > Does that make sense? It might play a role whether > the connection is closed by the client (HttpClient+ > redirect) or by the server ("connection: close" in > the request you send). It does make sense. Perhaps I should try another test where the application does not exit immediately, to see what state the connections are in. > You may want to use MultiThreadedHttpConnectionManager > to get results that are better comparable. Could try that. But we don't want to use that for JMeter. > hope that helps, Thanks. By the way, files and output are in http://people.apache.org/~sebb/time_wait/ comauto - google.com autoredir comnoauto - google.com no auto redir coukauto - google.co.uk autoredir .out = system.out .err = system.err (trace) > Roland > > --------------------------------------------------------------------- > 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]
