[Rock-dev] test on connected port fails in startHook

[gprizzi at tin.it]

 Dear sirs,

 I prepared the following simple system:

name 'testcon'
version '0.1'

task_context "Task1" do

    #  output ports
      output_port("port1", "int").
      doc("simple output port")
end 

task_context "Task2" do

    # input ports
      input_port("port1", "int").
      doc("simple input port") 

  # task is activated by new data on input port
      port_driven "port1"
end 

deployment "test1" do
    task1 = task("T1", "Task1").
          realtime.
          periodic(2.0).
    start

    task2 = task("T2", "Task2").
    start

    # connections beetwen tasks
      connect(task1.port1, task2.port1)
end

then I modified stratHook of task2 in order to test if all ports where correctly connected before 
starting component.
The code I write is listed below:

bool Task2::startHook()
{
  bool result;
  
    if (! Task2Base::startHook())
        return false;
    
    result=_port1.connected();
   
    if(!result )
      return false;
    else
      return true;
}

the test fails, and the component is not started.

The same test in updateHook returns the connections are correctly made.

In the Orocos Componets Builder's manual in paragraph "3.3.4. Using the Data Flow Interface in C++"
the connection test is made in startHook.

Am I doing something wrong in my orogen file or this is the desired behavior of code generated by orgen? 
Have I to test all the time in the updateHook the port connections.

Thank you in advance.

Gianpaolo Rizzi

 
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