Hello all,

From times to times, apparently randomly, I have the following uncaught
exception in the console :

2007-01-23 10:41:07 ERROR ZServer uncaptured python exception, closing
channel <ZServer.HTTPServer.zhttp_channel connected 10.75.49.51:48177 at
0x44562e6c channel#: 140 requests:> (socket.error:(104, 'Connection reset by
peer') [/opt/python2.4.2/lib/python2.4/asynchat.py|initiate_send|219]
[/opt/aef/Zope-2.9.0/lib/python/ZServer/medusa/http_server.py|send|417]
[/opt/python2.4.2/lib/python2.4/asyncore.py|send|332])

In addition, i have edited this file
:Zope-2.9.0/lib/python/ZPublisher/HTTPRequest.py
as follows :
<code>
   def retry(self):
       print "retry called in HTTPRequest for the",self.retry_count,"time"
       self.retry_count=self.retry_count+1
       self.stdin.seek(0)
       r=self.__class__(stdin=self.stdin,
                        environ=self._orig_env,
                        response=self.response.retry()
                        )
       r.retry_count=self.retry_count
       return r
</code>

I only added a single print line to see if this method was called. And
indeed, it is ! Does anyone knows when (in what circumstances) this method
could be called ???

<console trace>
ip: 10.75.49.155 requests counting of lines 11 to 21
ip: 10.75.49.51 requests counting of lines 11 to 21
sending results to 10.75.49.155
sending results to 10.75.49.51
retry called in HTTPRequest for the 0 time
ip: 10.75.49.51 requests counting of lines 11 to 21

</console trace>

Thanks.

Y.Chaouche

2007/1/19, yacine chaouche <[EMAIL PROTECTED]>:

It writes and reads objects in the session, maybe the probleme comes from
here ? Here's a little sinppet :

    def toutCompter(self):
        """
    xmlrpc methode, called from a web borwser.
        """
        documentXML = ComptageXML()
    #this reads and writes objects in the session
        dicoLignes  = self._fabriquerDicoLignes()
    #do things with dicoLignes
        for inumLigneCourante in xrange(borneInf,borneSup) :
            snumLigneCourante = str(inumLigneCourante)
            ligne = dicoLignes[snumLigneCourante]["requete"]
        #do things here
            self._ajouterAuDico(snumLigneCourante,ligne,comptage,arbre)

        if ligne :
            self._mettreEnSession(resultats)

        response = self.REQUEST.RESPONSE
        response.setHeader("Content-Type","text/xml")
        response.setHeader ("charset","utf-8")
        chaineXML = documentXML.formatXML()
        print "sending results to "+addresseIP
        return chaineXML

    def _fabriquerDicoLignes(self):
        formulaire = self.getForm()
        dicoLignes = self.getSession(self,"dicoLignes") or {}
        for key in formulaire.keys():
        #do things...
        self.setSession("dicoLignes", dicoLignes)
        return dicoLignes

    def _fabriquerListeLignes(self):
        dicoLignes = RacineAbstraite.getSession(self,"dicoLignes") or {}
        listeNumeros = dicoLignes.keys()
        listeNumeros.sort ( lambda x,y: cmp(int(x), int(y)) )
        return [ dicoLignes[str(inumeroLigne)]["requete"] for inumeroLigne
in \
                sorted( [int(snumeroLigne) for snumeroLigne in
dicoLignes.keys()] ) ]

    def _ajouterAuDico(self,p_snumeroCle,p_ligne,p_comptage,p_arbre):
        dicoLignes = RacineAbstraite.getSession(self,'dicoLignes') or {}
        dicoLignes[p_snumeroCle]  =
{'requete':p_ligne,'comptage':p_comptage,'arbre':p_arbre}
        self.setSession('dicoLignes',dicoLignes)

    def _mettreEnSession(self,p_resultats):
        """
        Mettre en session les résultats d'un comptage.
        """

        # Initialise de la SESSION
        dicoResultatRecherche = {
            'listeCriteres'     : [self._fabriquerListeLignes(),
self.getForm('numeroLigne')],
            'nombreEntreprises' : p_resultats[0][0],
            'listeComptage'     : p_resultats,
            'listeEntreprises'  : [],
            }
        #On conserve la requete et le resultat en session
        self.setSession('resultatRecherche',
p_dicoResultatRecherche.copy())


When toutCompter is called by browser 1, then he will write and read, say,
the dicoLignes object in the session.
When toutCompter is called by browser 2 parallely, is it the same
dicoLignes object that it tries to access or another one is created ? can
there be conflicts somehow ?

Y.Chaouche

2007/1/19, yacine chaouche <[EMAIL PROTECTED]>:
>
> I mean triple couples of lines of code.
>
> 2007/1/19, yacine chaouche < [EMAIL PROTECTED]>:
> >
> > The toutCompter methode does a lot of thing and it would take a triple
> > couples of lines to describe what it does all.
> > Anyway, is there a way for me to detect ConflictErrors ? they don't
> > appear on the console so i guess they are catched.
> >
> > Y.Chaouche
> >
> > 2007/1/19, Gabriel Genellina <[EMAIL PROTECTED] >:
> > >
> > > At Thursday 18/1/2007 16:30, Andreas Jung wrote:
> > >
> > >
> > > ><zope trace to the console>
> > > >ip: 10.75.49.155 requests counting of lines 1 to 11
> > > >ip: 10.75.49.51 requests counting of lines 1 to 11
> > > >sending results to 10.75.49.155
> > > >sending results to 10.75.49.51
> > > >ip: 10.75.49.51 requests counting of lines 1 to 11
> > > >sending results to 10.75.49.51
> > > ></zope trace>
> > > >
> > > >
> > > >Zope says he got 2 requests form 10.75.49.51 and sent it the
> > > results 2
> > > >times. Ok, let's check the tcpflow then for these supposed
> > > connections :
> > > >[...]
> > > >Allright, there is only ONE POST request. So zope didnt really got
> > > two
> > > >requests. Now let's see if it sent the data two times as it
> > > presumes :
> > > >[...]
> > > >The results were sent just one time, not two.
> > > >
> > > >What is going on here ?
> > >
> > > What does the toutCompter method really does? Does it modify some
> > > object state? That might provoke a ConflictError, forcing a
> > > transaction abort and the request to be re-tried (up to three times,
> > > silently, then it goes logged).
> > >
> > >
> > > --
> > > Gabriel Genellina
> > > Softlab SRL
> > >
> > >
> > >
> > >
> > >
> > >
> > > __________________________________________________
> > > Preguntá. Respondé. Descubrí.
> > > Todo lo que querías saber, y lo que ni imaginabas,
> > > está en Yahoo! Respuestas (Beta).
> > > ¡Probalo ya!
> > > http://www.yahoo.com.ar/respuestas
> > >
> > > _______________________________________________
> > > Zope maillist  -  Zope@zope.org
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> > >
> >
> >
>

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