Agent cannot receive event over network

[gbasso]

Describe the bug
Unable to connect two Agents on two different computer, even if the two SARL frameworks find the other computer.

To Reproduce
Run this code on two computers:

package network

import io.sarl.core.DefaultContextInteractions
import io.sarl.core.Initialize
import io.sarl.core.Logging

event Test

agent TestAgent {
	uses Logging, DefaultContextInteractions

	on Test {
		info("Success")
	}

	on Initialize {
		info("The agent was started.")
		emit(new Test)
	}
}

Expected behavior
When the second Agent is started "Success" should be display on the two computers.

System configuration:
-- SARL version: 0.8.4
-- SARL compiler:

• • Eclipse compiler without Maven
    -- Java JDK version (with the manufacturer name): openjdk version "1.8.0_181"
    -- Operating System:
• • Linux 64bits

Additional context
The computers are connected on a local network with all ports opened, and Hazelcast can connect the SARL frameworks.

[germandcorrea]

Excellent, I needed this feature !!!

[gallandarakhneorg]

Dear @germandcorrea. This networking feature should work without configuration (because we are using Hazelcast and ZeroMQ for discovering automatically the different kernels). Nevertheless, you welcome to give your feedbacks regarding this feature. I will be happy to have them for making this feature working perfectly.

[gbasso]

Dear @gallandarakhneorg, I tried a ping pong example and the communication over the network does not seem to work with guards: emit(new Pong)[ it == occurrence.source ]

To Reproduce
Run this code on two computers:

// First computer
package network

import io.sarl.core.DefaultContextInteractions
import io.sarl.core.Logging

event Ping
event Pong

agent PongAgent {
    uses DefaultContextInteractions, Logging
    on Ping {
    	info("pong")
        emit(new Pong)[ it == occurrence.source ]
    }
}

// second computer
package network

import io.sarl.core.DefaultContextInteractions
import io.sarl.core.Initialize
import io.sarl.core.Logging
import io.sarl.core.Schedules

event Ping
event Pong

agent PingAgent {
    uses DefaultContextInteractions, Logging, Schedules

    on Initialize {
        val task = task("waiting_for_partner")
        task.every(1000) [
            if (defaultSpace.participants.size > 1) {
                emit(new Ping)
                task.cancel
            }
        ]
    }

    on Pong {
        info("ping")
        emit(new Ping)[ it == occurrence.source]
    }
}

Expected behavior
The first agent should display "pong" indefinitely, the second agent should display "ping" indefinitely.

System configuration:
-- SARL version: 0.8.5
-- SARL compiler:

• • Eclipse compiler without Maven
    -- Java JDK version (with the manufacturer name): openjdk version "1.8.0_181"
    -- Operating System:
• • Linux 64bits

Additional context
The computers are connected on a local network with all ports opened, and Hazelcast can connect the SARL frameworks. If the guard [ it == occurrence.source ] is commented, the message is received.

[gallandarakhneorg]

Dear @gbasso.
I have create the issue #885 for your problem because it is very specific to the support of the guards, and not any more about the event rooting mechnism.