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Top Forums Programming Client/Server Socket Application - Preventing Client from quitting on server crash Post 302348118 by varun.nagpaal on Thursday 27th of August 2009 10:56:02 AM
Old 08-27-2009
Client/Server Socket Application - Preventing Client from quitting on server crash

Problem
- Linux Client/Server Socket Application: Preventing Client from quitting on server crash

Hi,
I am writing a Linux socket Server and Client using TCP protocol on Ubuntu 9.04 x64.

I am having problem trying to implement a scenario where the client should keep running even when the server crashes(because of any reason).

By default, when server closes because of error or when killed by closing the window, the client also quits. I have to somehow handle this situation and make sure the client keeps on running and restarts under this scenario.

I think I need to do handle some unix signals in my client application, I am not sure which ones and how? Can anyone suggest how to go about doing this.

Thanks for suggestions in advance.

Regards
Varun
 

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appclient(1M)						    Application Server Utility						     appclient(1M)

NAME
appclient - launches the Application Client Container and invokes the client application packaged in the application JAR file SYNOPSIS
appclient -client client_application_jar [-mainclass client_application_main_classname|-name display_name] [-xml sun-acc.xml file] [-tex- tauth] [-user username] [-password password] Use the appclient command to launch the application client container and invoke a client application that is packaged in an application JAR file. The application client jar file is psecified and created during deployment either by the deploytool or by using the asadmin deploy command. The application client container is a set of java classes, libraries and other files that are required to execute a first-tier application client program on a Java Virtual Machine (JVM). The application client container communicates with the Application Server using RMI-IIOP. The client.jar that is retrieved after deploying an application , should be passed with the -client option while running the appclient utility. The -mainclass and -name options are optional for a single client application. For multiple client applications use either the -classname option or the- name option. -client required; the name and location for the client application jar file. The application client JAR file is specified and created during deployment, either by the deploytool or by the asadmin deploy command. -mainclass optional; the full classname of the main client application main() method that will be invoked by the Application Client Container. Used for a single client application. By default, uses the class specified in the client jar. The class name must be the full name. For example, com.sun.test.AppClient -name optional; the display name for the client application. Used for multiple client applications. By default, the dis- play name is specified in the client jar application-client.xml file which is identified by the display-name attribute. -xml optional if using the default domain and instance, otherwise it is required; identifies the name and location of the client configuration XML file. If not specified, defaults to the value of $AS_ACC_CONFIG identified in asenv.conf file. -textauth optional; used to specify using text format authentication when authentication is needed. Example 1: Using the appclient command appclient -client appserv/bin/myclientapp.jar -mainclass com.sun.test.TestAppClient -xml sun-acc.xml scott sample Where: appserv/bin/myclientapp.jar is the full path for the client application .jar file, com.sun.text.TestAppClient is the full Java pack- age name of the main client application, scott and sample are arguments to pass to the application, and sun-acc.xml is the name of the client configuration XML file. If sun-acc.xml is not in the current directory, you must give the absolute path location; otherwise the rel- ative path is used. The relative path is relative to the directory where the command is being executed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Unstable | +-----------------------------+-----------------------------+ package-appclient(1M), asadmin(1M) Sun Java System Application Server March 2004 appclient(1M)
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