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
10 More Discussions You Might Find Interesting
1. Programming
Hi,
Am very new to socket programming.
When we use UDP sockets to communicate between two processess,
will both the client/server socket be able to send/recv ?
meaning can sendto()/ recvfrom() be used on both server and client?
It could be useful even if anybody provide some link on socket... (1 Reply)
Discussion started by: rvan
1 Replies
2. UNIX for Dummies Questions & Answers
I'm new to socket programming. Have a basic doubt.
I have a structure(global) at the server side.
I have two different client connecting to the server. Will the changes made by one client on the structure be visible to the other client when it accesses the same client? I'm creating a STREAM... (3 Replies)
Discussion started by: abc.working
3 Replies
3. Programming
hi all
I'm beginner in CORBA Server-Client appliction development.
My server- client application was worked well and i have tested it too.
Due to some Network problem we have rebooted our dedicated server , then i restart my corba service, application in the server it started... (0 Replies)
Discussion started by: VijayakumarN
0 Replies
4. UNIX for Dummies Questions & Answers
Ive written a java based "webscraper to rss feed" which resides on my college web space when I execute the app from putty it creates the feed and sets the permissions perfectly.I then wrote a php script to execute the app on demand from the browser using
...
system("java -cp... (1 Reply)
Discussion started by: gleesonger
1 Replies
5. Programming
char name;
printf ("Welcome to the server \n");
printf ("Enter user name: \n");
scanf ("%c", &name);
how can client send name to server:what should be the code?
int send ( int sid , const char ∗buffer Ptr , int len , int f l a g )
how can client receive ack from... (1 Reply)
Discussion started by: saiful_911
1 Replies
6. Programming
hei,
i want to enter name and read it by client server socket program after checking name validity put the password and check.if ok than server clirnt say correct other wise incorrect.
below my code:
char name;
printf ("Welcome to the server \n");
printf ("Enter user name: \n");
scanf... (1 Reply)
Discussion started by: saiful_911
1 Replies
7. Windows & DOS: Issues & Discussions
Hi All,
I need your expertise in finding a way to solve my problem.Please excuse if this is not the right forum to ask this question and guide me to the correct forum,if possible.
I am a DBA and on a daily basis i have to ftp huge dump files from my company server to my laptop and then... (3 Replies)
Discussion started by: kunwar
3 Replies
8. Programming
Hello people.
I'm trying to do something like a search engine.
Server runs in the background by using ./server & which has data from a textfile stored in an array.
Client then runs by using ./client
It will then prompt "Search for:"
For example, if I searched for Products called Instant... (0 Replies)
Discussion started by: andylbh
0 Replies
9. Programming
The steps to test the problem
1. Open TCP Server
2. Open TCP Client
3. TCP Client sends data to Server.
4. Close TCP Server and the client also crash without any notification
Second wonderful test:
1. Comment the following statement in Client.c (at line 168) and compile it
Writen(... (1 Reply)
Discussion started by: sehang
1 Replies
10. Programming
I'm trying to make a "dual/server client" (ipv4,ipv6) with sockets in linux but i don't know how to join both codes. I have a dual client ipv4 and ipv6, but i have problems with the server if you notice the only difference between them it's the AF_INET (pf_inet ipv4, and if_inet6 ipv6) and the port... (3 Replies)
Discussion started by: godna
3 Replies
LEARN ABOUT DEBIAN
appclient
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)