tests/python/python@py_ext/pyfile.xml
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Wed, 13 Mar 2019 15:43:45 +0300
changeset 2543 2befed4d6ca8
parent 1401 611fded24ce4
child 2680 6bfed6757495
permissions -rw-r--r--
Fix Pyro work with SSL wrapper (sslpsk)

Following error was shown in Beremiz console:
PYRO connecting to URI : PYROS://127.0.0.1:3001#beremiz
Exception while connecting to 'PYROS://127.0.0.1:3001#beremiz': non-zero flags not allowed in calls to recv() on <class 'ssl.SSLSocket'>
Connection failed to PYROS://127.0.0.1:3001#beremiz!

Reason is that Pyro calls socket recv() with MSGWAITALL flag, that causes ValueError exception.

https://docs.python.org/2/library/ssl.html
recv(), recv_into() (but passing a non-zero flags argument is not allowed)
<?xml version='1.0' encoding='utf-8'?>
<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml">
  <variables>
    <variable name="Test_Python_Var" type="INT" initial="4"/>
    <variable name="Second_Python_Var" type="INT" initial="5"/>
  </variables>
  <globals>
    <xhtml:p><![CDATA[
import time,sys,ctypes
Python_to_C_Call = PLCBinary.Python_to_C_Call
Python_to_C_Call.restype = ctypes.c_int
Python_to_C_Call.argtypes = [ctypes.c_int, ctypes.POINTER(ctypes.c_int)]

def MyPythonFunc(arg):
    i = ctypes.c_int()
    if(Python_to_C_Call(arg, i)):
        res = i.value
        print "toC:", arg, "from C:", res, "FBID:", FBID
    else:
        print "Failed Python_to_C_Call failed"
        res = None
    print "Python read PLC global :",PLCGlobals.Test_Python_Var
    PLCGlobals.Second_Python_Var = 789
    sys.stdout.flush()
    return res

async_error_test_code = """
def badaboom():
    tuple()[0]

import wx
def badaboomwx():
    wx.CallAfter(badaboom)

from threading import Timer
a = Timer(3, badaboom)
a.start()

b = Timer(6, badaboomwx)
b.start()
"""
]]></xhtml:p>
  </globals>
  <init>
    <xhtml:p><![CDATA[
global x, y
x = 2
y = 5
print "py_runtime init:", x, ",", y
]]></xhtml:p>
  </init>
  <cleanup>
    <xhtml:p><![CDATA[
print "py_runtime cleanup"
]]></xhtml:p>
  </cleanup>
  <start>
    <xhtml:p><![CDATA[
global x, y
print "py_runtime start", x * x + y * y
]]></xhtml:p>
  </start>
  <stop>
    <xhtml:p><![CDATA[
print "py_runtime stop"
]]></xhtml:p>
  </stop>
</PyFile>