Sending multiple web requests by expression

[jasonrwise77]

Looking for some assistance, I am using http commands to control some camera functions and was wondering if you can included 2 separate http commands to 2 different IP address all in the same expression? Is this possible, if so how?

[Ryan780]

I don’t see how it would be. But why would it have to be in the same expression? why couldn’t it be 4?

[jasonrwise77]

I am already doing that, the issue is, it seems a 15 second delay is being added between commands. I was trying to see if I can send multiple web requests in the same command to eliminate the delay.

[Ryan780]

Use an async group.

[jasonrwise77]

You have an example of that?

[Ryan780]

There are a bunch in the example pistons. I can send you one when I am in front of my PC again.

[jasonrwise77]

Pleas do

[Ryan780]

This is a small one but you can import it with the backup code. You create a do block and set the execution policy to asynchronous.

[ipaterson]

Unfortunately this does not work. I think normally you would have multiple async blocks, but regardless it seems webCoRE is only able to handle one request at a time. See this variant which uses an API that mocks slow response times. I set it to a 3 second delay to load google.com

This logs the following:

10/29/2018, 6:39:52 PM +253ms
+6668ms ║Done with batch 1
+13149ms ║Done with batch 2

Despite the async blocks, all requests are done in series so it takes over 12 seconds to run rather than the 3 to 6 we would expect with parallel requests.

This question came up last year; there is at least one solution but it’s ugly:

Multiple web requests

Actually, the above does not work. If I change the first to a request that takes a long time to respond, the second does not execute until after the response is received despite the async. I am not aware of a way to instruct webCoRE to not wait up to 20 seconds for the response. So, here is an alternate approach that still uses a single piston. The piston calls itself multiple times to do the web requests. The problem here is that if you try to run a piston more than 2 times in parallel the sc…

[eibyer]

Is it possible the same is happening on this one? When I first put together the piston I was only doing Log to console.

Piston Design Help, Pressure Sensor, Web Request, Fully Browser

@eibyer This has been an ongoing issue where the where both booleans get stuck on “true” and don’t reset to “false” which causes the Piston to stop firing. I usually have to go into the Piston and manually change them back to “false” Is there something we can do to alleviate that issue? [PIston]

[jasonrwise77]

I have several pistons, where webcore is actually adding a 15 second delay and doing the count down until the next web request. Regardless if there is a wait added or not.

[jasonrwise77]

The Hack way of trying to fix this will never work for me. It would take way too many pistons. I guess I will just live with the way it is.