CODEWITHSUNDEEP
c#.netwcf
user2783193
user2783193

Reputation: 1022

How can client know is wcf service is running?

My service is running currently on 

localhost:17722/Book.svc

How can my client app know if the service running before trying to consume it?

Upvotes: 1

Views: 4353

Answers (5)

Wjdavis5
Wjdavis5

Reputation: 4151

Setup a dummy method in the svc that returns a bool or something. Then hit it on a background thread at a specified interval. If the request times out you can then handle the timeout by displaying something that says the service is unreachable.

Upvotes: 1

shf301
shf301

Reputation: 31404

Don't check to see if a server is up before consuming it. Consume the service and handle any errors that occur during the call.

Even if you check that the service is up it can go down between the time you check that it is up and you call the service. So even if you check that it is up, you still need to handle it being down when you consume it.

The best way to check if a service is up is to try to use it.

Upvotes: 5

Matthew
Matthew

Reputation: 25783

I would apply the principal of Tell, don't ask in this situation. Just try to perform whatever operation you were intending on doing, and then handle the exception if it fails.

Why would your program be consuming a service if it was not necessary to the operation of the program?

Hey service, can I invoke your 'X' method? ... no? ... okay, I didn't want to anyway :P

Upvotes: 4

polkduran
polkduran

Reputation: 2551

Well this is not possible until you try the service (or ping the server). Calling your web service from your client application is like calling any other web service, how can you know that a "google's" web service is running before consuming it?

Once I had a similar problem and I just expose an operation that returns "something" (return true for instance) that I called to know if the server application was "operational" and expecting a "timeout" or "500" error when not working.

Upvotes: 1

MikroDel
MikroDel

Reputation: 6735

Only some kind of ping

but without guarantee, that after you ping was ok the service will be not droped before your real request

To summarize:

Prepare you clint to handle dead service(s), faults etc

Upvotes: 5

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