CODEWITHSUNDEEP
pythonsocketsgroovysendunetstack
Sayali Deo
Sayali Deo

Reputation: 41

UnetSocket send() returns a Nonetype object

I am trying out the python code specified in the UnetStack Handbook. While running tx.py and rx.py, UnetSocket object is created successfully as I print it out on the terminal, but the send() function sends Nonetype data at the receiver.

tx.py ===>>

from unetpy import UnetSocket

s = UnetSocket('localhost',1101)
print(s)
s.send('hellooo',31)
s.close()

rx.py =====>>>

from unetpy import UnetSocket
s = UnetSocket('localhost',1102)
rx = s.receive()
print('here ',rx)
print('from node : ',bytearray(rx.data).decode())
s.close()

First I run 2-node-network.groovy on the Simulator. Then rx.py and next tx.py from the terminal.

Error at rx.py Traceback (most recent call last): File "rx.py", line 6, in 

print('from node : ',bytearray(rx.data).decode())

AttributeError: 'NoneType' object has no attribute 'data'

O/p at tx.py <unetpy.UnetSocket object at 0x7fe2909d4550>

Upvotes: 4

Views: 231

Answers (1)

Mandar Chitre
Mandar Chitre

Reputation: 2280

I managed to reproduce your problem with the latest versions of unetpy + fjagepy. Seems to be a bug introduced in 1.7.1 release of fjagepy (I am assuming you have version 1.7.1 installed). Try:

pip install fjagepy==1.7.0

and then repeat your test to see if it works.

P.S. I have reported the problem to the maintainer for fjågepy and so hopefully we should have a fix in the next release. Until then you can use 1.7.0 release, if that works for you.

Upvotes: 6

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