- #Apache async http client install
- #Apache async http client zip file
- #Apache async http client code
- #Apache async http client series
Deploy samples\async-http\http-local-app\target\ on the Geronimo server we configured earlier using either the consoleor the command line.This should be set to the machine where your remote app will be deployed. edit the web.xml there and change the value of the initi-param.cd into samples\async-http directory\http-local-app\src\main\webapp\WEB-INF directory.Unzip the file into a directory of your choice, say samples.
#Apache async http client zip file
Download the zip file which contains both the apps discussed above.Replace that with the appropriate version of your server for the module /tomcat6//car, add the following gbean.add load="false" to the TomcatWebConnector gbean.edit geronimo_home/var/config/config.xml.Now delete the TomcatWebConnector in the Network Listeners list so that all connections are made to the new Tomcat NIO HTTP connector. Your new connector must be listed in the Network Listeners. Specify a uniquename for the connector and take all the default values. Under "Add new:" section, click on " Tomcat NIO HTTP connector". Click on the "Web Server" link on the left hand navigation frame. Log onto the console by using system/manager as your credentials.
#Apache async http client install
Install a geronimo server with tomcat webcontainer and start it. Little-G assemblies do not have a console. Use one of the following methods to configure your server. This app can be run on any other server and machine. This simulates varous response times and return status codes from an external app.
#Apache async http client code
For other status codes, it sets the appropriate response code in the ndError(). For the status code 500, it does a divide by zero to throw a servlet exception. If the code is 200, it serves a file called dummy.html. It sleeps for the amount of time specified in the delay. The http-remote-appĪ simple servlet in this app reads the two request parameters delay and code.
When it receives the answer from the remote app, it gets the original response from the event object and passes the message to it. This app has a callback listener which holds the CometEvent object. Once the async client sends a request to the remote app, the servlet returns without waiting for a response from the remote app. The remote url is initialized from the servlet's value. Using the async client, it connects to a remote url and passes these randomly generated values to it. The servlet also generates a random delay time and a random http status code. More information about this can be read here. The event object gives access to the usual request and response objects, which may be used in the usual way. The CometProcessor will make it's event method invoked rather than the usual service method, according to the event which occurred. The AsyncServlet in this app uses the AHC and implements the CometProcessor interface. The async http client connects to the remote app and when it recieves a response, a callback is fired which relays the message back to the original response stream. The servlet on the http-local-app delegates requests to the async http client and returns immediately.
Another webapp call http-remote-app is deployed on any other server. It then deploys an app which we shall call http-local-app on this configured server.
#Apache async http client series
Using it can handle a series of events related to the HTTP call: request.This example seeks to demonstrate the usage of the async http client by first configuring the Geronimo server. The AsyncHandler listener offers the possibility to control and process the HTTP call before it has completed. The AHC library provides 3 types of listeners that can be used for asynchronous HTTP calls: When we talk about asynchronous executions, we also talk about listeners for processing the results.
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