i have a problem in web services

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I have some problems in my web service .
As we all know, the web service is just a service on a database that I ask for using some interface and it returns the answer to me.

I want to make a webservice on the database that has a function that runs forever.
This function checks for input on a certain tcp port, does something if there is data on it and sends a response to the sender.
This function must run forever .

Is it possible with a webservice?

If not, what is the solution of this problem that I want to make an interface on a database and have a function that runs forever?

Posted 11-Jan-11 21:16pm

amir tarek

Updated 11-Jan-11 21:25pm

JF2015

v3

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Sandeep Mewara 12-Jan-11 3:34am

So what do you want? Pass the value somewhere using webservice automatically?
Couldn't make out where you need this WS to play a role. Functions runs in DB, right?

Sandeep Mewara 12-Jan-11 4:12am

Moved OP's update:
sandeep mewara

thank you for your answer

i want a webservice that has a function that run forever without need to invoke it, this function check the tcp port forever

2 solutions

Solution 2

From the question what I understood is you need a Windows service to check the value in the TCP/IP port. Web service need to be invoked always.
If you want the Web service to do the checking use the windows service to invoke the web service , which ( Web Service) in turn do the checking and sending of data in TCP/IP port ( this is not a good way to do )

Posted 11-Jan-11 22:13pm

Baji Jabbar

Updated 11-Jan-11 22:16pm

v2

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amir tarek 12-Jan-11 4:18am

thank you mab_j for that but can you give me c# code example for windows service that invoke web service?

Baji Jabbar 12-Jan-11 4:24am

Sandeep has given you the links. Just refer it and do it by yourself. In my code db I don't have the code which you want :). Try and do it by yourself first and then if stuck in somewhere feel free to post , CP has lot of kind heart helping peoples , who is eager to help someone ;) , surely someone or many will show you the correct way to solve the issue

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Sandeep Mewara · Accepted Answer · 2011-01-11T22:16:00

"i want a webservice that has a function that run forever without need to invoke it, this function check the tcp port forever"

There is a way for it. Create a windows service and let it run 'forever'.
Internally, refer the webservice. Ping/use the webservice function at defined interval like 5 sec or 1 min or x min. This would lead you to run the function automatically for given time.

Have a look here of how to create a windows service:
Simple Windows Service Sample[^]
Windows Services in Action I[^]