yes you are correct its a problem at the python side. I tested with telnet and it seems it cannot send data. About your PS i am using isDataAvailable because I don't want the socket to go into a block mode, I want to just receive what already has become available to the socket. I tested with telnet and it works exactly as I want. That part of the code is too simple and probably will change in the future so its definitely not a final solution. On Sat, Jul 26, 2014 at 11:37 AM, Sven Van Caekenberghe <sven@stfx.eu> wrote:

Kilon,

I can't see any direct error in your code (on the client side, I don't known about the server).

Consider this (do it):

| stream | stream := SocketStream openConnectionToHostNamed: 'zn.stfx.eu' port: 80. stream sendCommand: 'GET / HTTP1.1', String crlf. stream upToEnd inspect . stream close.

Client-side TCP is pretty simple. #sendCommand: does a #flush after adding a CRLF (we need two here).

HTH,

Sven

PS: There is no need to do #isDataAvailable, reading a socket stream blocks while waiting for data (within the timeout).

On 26 Jul 2014, at 01:04, kilon alios <kilon.alios@gmail.com> wrote:

...

so I have no issues sending data from pharo to python but I have a problem recieving data from python

here is my method

sendMessage: aString

|stream errString isDataAvailable | stream := SocketStream openConnectionToHostNamed: '127.0.0.1' port: 4000 . stream sendCommand: aString. isDataAvailable := stream isDataAvailable . isDataAvailable inspect. isDataAvailable ifTrue: [ errString := stream nextLineCrLf . errString inspect. errString = '' ifFalse:

[self error: errString.]] .

...

stream close.

I have used telnet to test the connection , telnet can receive the data

fine and it displays it fine. I have encode the data as bytestring from python with ascii encoding and added both a carriage return and a line feed in the end ? whats wrong ?

...

I tried most method in socket stream even upToEnd message and none gives

back any data.

...

What am I doing wrong ?

ok next question . what kind of encoding does StreamSocket expects for incoming messages because it does not seem to accept the python encoding I also tried utf-8 with no success. Basically I encode a python string to a binary string. Is there a specific encoding for the bytes it expect in order to accept the incoming message ?

well it seems plain encoding worked. Now the next issue is how to synchronise error reporting between blender and pharo. I am receiving the data from the socket with some lag. Again most likely I am doing something wrong. Anyway thanks all for your help. On Sat, Jul 26, 2014 at 5:16 PM, Ben Coman <btc@openinworld.com> wrote:

kilon alios wrote:

...

You know at times I admire how stupid I can be. So the problem was not the fault of Blender , of Python or of Pharo​. It was me , me and me :D

I was reading the Python 2 docs on sending data via sockets when I should be reading the Python 3 docs , because Blender uses Python 3 and in Python 2 data is sent as string and in Python 3 data is sent as binary.All I had to do was to convert the string to a binary . I would have seen the error but unfortunately because of a strange bug in Blender I cannot run it from terminal and so it does not display any errors :D

So yes problem solved and off I go to next stupid mistake. Coding is such a humiliating experience :D

"troubleshooting" => The art of stepping backwards through your assumptions :)