HTTP Connection Close

[tibanker]

Hi,

I have an Updateable Grid.
I set http_get() on AfterInsertRecord xbasic function.
It's run well.

The problem is if I insert again fast enough (immediately after the first insert), the http_get() is not running.
It looks like it's waiting until time out then the http_get() can run again after I insert the data.

My question is, does Alpha have http.close() or something like that to close the connection?

Thanks,
Antony

[mikeallenbrown]

No, there isn't a close method. That isn't needed. By default the connection will timeout after 8 seconds OR the server will respond with something before that timeout. Have you looked at Alpha's documentation? I linked it below. I would recommend debugging your method and see what the server response is.

https://documentation.alphasoftware....20Function.xml

[tibanker]

Hi Mike, thank you for your answer.

I have read the documentation and there's no info about the close method.
I do the debug and yes, http_get catches immediately of the previous session, not the new one.
and 1 other thing, I use http_get for calling API, the response can be longer than 8 seconds, so I make the timeout longer (I set it to 60 because the process varied from 5 to 25 and could be longer).

I just use the simple code on xbasic :
dim p as p
p = http_get(apiLink, "", 80, 60000)

[Lenny Forziati]

http_get() is a synchronous (blocking) function and it automatically closes the connection once the response is received, or upon timeout if that occurs before the full response is able to be read.

It sounds like you are attempting to run the function a second time while the first execution is still running. Because it is a blocking call, no other Xbasic can execute at that time, so attempting to execute another http_get(), or any other Xbasic, will need to wait until the first call has completed.

[peteconway]

In the first function that makes the first call - call the second function in the onComplete of the first function. - always worked for me.

[kkfin]

http_get() is a synchronous (blocking) function and it automatically closes the connection once the response is received, or upon timeout if that occurs before the full response is able to be read.

It sounds like you are attempting to run the function a second time while the first execution is still running. Because it is a blocking call, no other Xbasic can execute at that time, so attempting to execute another http_get(), or any other Xbasic, will need to wait until the first call has completed.

I did some time ago a test and you can solve this waiting problem. So something like asyncronous Xbasic. Check this thread post 7.

[tibanker]

http_get() is a synchronous (blocking) function and it automatically closes the connection once the response is received, or upon timeout if that occurs before the full response is able to be read.

It sounds like you are attempting to run the function a second time while the first execution is still running. Because it is a blocking call, no other Xbasic can execute at that time, so attempting to execute another http_get(), or any other Xbasic, will need to wait until the first call has completed.

I call the http_get() on afterUpdateRecord xbasic function.
and have it processed until return to the end.

and then I update the record again, so it'll run the same HTTP inside the http_get() but it is just like having a session from before.

[tibanker]

I did some time ago a test and you can solve this waiting problem. So something like asyncronous Xbasic. Check this thread post 7.

sorry, but I don't really understand how to use it.

[kkfin]

sorry, but I don't really understand how to use it.

It is just an example that shows how to bypass the xbasic execution tube which Lenny mentioned.

So because Alpa has nodejs integration and Alphas nodejs service can interact with xbasic and nodejs runs javascript you can this in mind send so called Beacon also in Alpha . The xbasic that calls Alphas nodejs service needs not to wait the Nodejs services (javascript but which actually calls xbasic ) result so you are sending Beacon and the calling xbasic can continue immediately. So the example just shows that this all also works in practice. It is not related to your problem in your thread. You can forget the post.