[zeromq-dev] ZMQ appends weird characters to message

[gonzalo diethelm]

Please create a short (as short as possible) example that shows this symptom, and post it to the list.

-- 
Gonzalo Diethelm
DCV Chile

> -----Original Message-----
> From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-
> bounces at lists.zeromq.org] On Behalf Of Dávid Kaya
> Sent: Monday, September 15, 2014 12:39 PM
> To: ZeroMQ development list
> Subject: Re: [zeromq-dev] ZMQ appends weird characters to message
> 
> Yes, I've printed that message. There can't be any NULL byte there. It is string
> "success:" appended with url. It is normal url like
> "http://example.org/path/to/jsp?lang=en_US?session="session id here".
> That session ID contains numbers, characters and dashes.
> 
> 
> On 15.09.2014 17:30, gonzalo diethelm wrote:
> > No, this is not a (known) limitation. Did you print exactly what you
> > are sending and what you are receiving? My guess is you are putting a
> > null byte in the middle of what you are sending.
> >
> > --
> > Gonzalo Diethelm
> > DCV Chile
> >
> >> -----Original Message-----
> >> From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-
> >> bounces at lists.zeromq.org] On Behalf Of Dávid Kaya
> >> Sent: Monday, September 15, 2014 12:21 PM
> >> To: zeromq-dev at lists.zeromq.org
> >> Subject: Re: [zeromq-dev] ZMQ appends weird characters to message
> >>
> >> Well, I've printed out size and it is correct. I've also shortened
> >> the message by 5 characters and it stopped cutting off the last
> >> characters (atleast I think it stopped, tried 15 times and it came
> >> correct every time). So I think the problem was in the length of the
> >> message. I don't know if it is a bug in ZMQ or system limitation of
> >> socket files?
> >>
> >> David
> >>
> >>
> >> On 15.09.2014 16:47, gonzalo diethelm wrote:
> >> > Good point. Forgot about the specific details for that C++
> >> > constructor. The null byte should not be required.
> >> >
> >> > As Tom points out, you should print out what you are sending and
> >> > receiving (contents and length) and make sure it makes sense.
> >> >
> >> > HTH.
> >> >
> >> > --
> >> > Gonzalo Diethelm
> >> > DCV Chile
> >> >
> >> >> -----Original Message-----
> >> >> From: zeromq-dev-bounces at lists.zeromq.org [mailto:zeromq-dev-
> >> >> bounces at lists.zeromq.org] On Behalf Of Tom Quarendon
> >> >> Sent: Monday, September 15, 2014 11:42 AM
> >> >> To: ZeroMQ development list
> >> >> Subject: Re: [zeromq-dev] ZMQ appends weird characters to message
> >> >>
> >> >> > You have two choices:
> >> >> > 1. Send the '\0' as part of the message (and set length to one
> >> >> more byte).
> >> >> > 2. Append a '\0' after receiving the message.
> >> >>
> >> >> Uh, why?
> >> >> string(static_cast<char*>(reply.data()),reply.size());
> >> >> doesn't assume the string is null terminated. It constructs
> >> string
> >> >> from pointer and length. Isn't adding a in a null just going mask
> >> the
> >> >> real issue and make it look like the std::string only contained
> >> >> "login" when really it still contained the extra stuff as well.
> >> >> David, Do you know what reply.size() actually contains? Have you
> >> >> tried printing that out and comparing it to what you expect?
> >> >>
> >> >> _______________________________________________
> >> >> zeromq-dev mailing list
> >> >> zeromq-dev at lists.zeromq.org
> >> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> >> >
> >> >
> >> > -----------------------------------------
> >> > Declaración de confidencialidad: Este Mensaje esta destinado para
> >> el
> >> > uso de la o las personas o entidades a quien ha sido dirigido y
> >> puede
> >> > contener información reservada y confidencial que no puede ser
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> >> > autorizado de la información contenida en este correo podrá ser
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> >> > Si usted ha recibido este correo electrónico por error, le pedimos
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> >> al
> >> > remitente, respondiendo este mensaje.
> >> >
> >> > "Before printing this e-mail think if is really necesary".
> >> > Disclosure: This Message is to be used by the individual,
> >> individuals
> >> > or entities that it is addressed to and may include private and
> >> > confidential information that may not be disclosed, made public
> >> nor
> >> > used in any way at all. Unauthorized use of the information in
> >> this
> >> > electronic mail message may be subject to the penalties set forth
> >> by
> >> > Chilean law.
> >> > If you have received this electronic mail message in error, we ask
> >> you
> >> > to destroy the message and its attached file(s) and to immediately
> >> > notify the sender by answering this message.
> >> > _______________________________________________
> >> > zeromq-dev mailing list
> >> > zeromq-dev at lists.zeromq.org
> >> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> >>
> >> _______________________________________________
> >> zeromq-dev mailing list
> >> zeromq-dev at lists.zeromq.org
> >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> >
> > -----------------------------------------
> > Declaración de confidencialidad: Este Mensaje esta destinado para el
> > uso de la o las personas o entidades a quien ha sido dirigido y puede
> > contener información reservada y confidencial que no puede ser
> > divulgada, difundida, ni aprovechada en forma alguna. El uso no
> > autorizado de la información contenida en este correo podrá ser
> > sancionado de conformidad con la ley chilena.
> > Si usted ha recibido este correo electrónico por error, le pedimos
> > eliminarlo junto con los archivos adjuntos y avisar inmediatamente al
> > remitente, respondiendo este mensaje.
> >
> > "Before printing this e-mail think if is really necesary".
> > Disclosure: This Message is to be used by the individual, individuals
> > or entities that it is addressed to and may include private and
> > confidential information that may not be disclosed, made public nor
> > used in any way at all. Unauthorized use of the information in this
> > electronic mail message may be subject to the penalties set forth by
> > Chilean law.
> > If you have received this electronic mail message in error, we ask you
> > to destroy the message and its attached file(s) and to immediately
> > notify the sender by answering this message.
> > _______________________________________________
> > zeromq-dev mailing list
> > zeromq-dev at lists.zeromq.org
> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
> 
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