#4051 NORM First D: sample code of moving a pdf via tubes needed

[Zarro Boogs per Child]

#4051: sample code of moving a pdf via tubes needed
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  Reporter:  erikb   |       Owner:  morgs                 
      Type:  defect  |      Status:  assigned              
  Priority:  normal  |   Milestone:  First Deployment, V1.0
 Component:  sugar   |     Version:                        
Resolution:          |    Keywords:                        
  Verified:  0       |  
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Changes (by morgs):

  * status:  new => assigned


Comment:

 There's really no magic involved. You need to read in the file a section
 at a time, and send the chunks as type "ay" (array of bytes).

 Assuming you are sending the data using signals - broadcasting them to all
 activity participants, you need to make sure you use "byte_arrays=True"
 when doing the add_signal_receiver, to get a dbus.ByteArray and not a
 dbus.Array of bytes.

 Tubes implement Causal Ordering, so the signals will arrive in the order
 they were sent. You can check reliability by sending an MD5 hash as well
 and reconstructing the hash when you know you have the whole file.

-- 
Ticket URL: <https://dev.laptop.org/ticket/4051#comment:1>
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