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Id: 39982
Status: rejected
Priority: 0/
Queue: SOAP-WSDL

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Owner: Nobody in particular
Requestors: nobody [...] dizum.com
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Severity: (no value)
Broken in: (no value)
Fixed in: (no value)



Subject: feature request: options for dealing with large responses
Date: Sun, 12 Oct 2008 12:20:01 +0200 (CEST)
To: bug-SOAP-WSDL [...] rt.cpan.org
From: Nomen Nescio <nobody [...] dizum.com>
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would it be possble to support the ability to use callbacks or temporary files when dealing with large messages? i'd like to avoid having to load the entire message into memory if possible. thanks
Subject: Re: [rt.cpan.org #39982] feature request: options for dealing with large responses
Date: Wed, 15 Oct 2008 19:12:22 +0200
To: bug-SOAP-WSDL [...] rt.cpan.org
From: Martin Kutter <martin.kutter [...] fen-net.de>
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Hi Nomen, This is possible, but quite an amount of work: You'd have to replace one (or both of) SOAP::WSDL::Expat::MessageParser (the parser processing the SOAP message), and (maybe) SOAP::WSDL::Transport::HTTP (which subclasses LWP::UserAgent). LWP::UserAgent allows setting a callback for processing chunks of HTTP responses, and XML::Parser used by SOAP::WSDL::Expat::MessageParser (well, actually it uses the low-level parser XML::Parser::Expat) is a callback-based stream parser which can parse chunks of XML. So, by replacing one both, you could build applications which either stores the response to disk, or just process parts of it (like only processing phone numbers from a list of complete address data sets). I won't include this in SOAP::WSDL, though, as applications designed that way are basically event-based (the parser has to fire an appropriate event when the XML chunk in question has been found), while SOAP::WSDL fosters a document based request/response scheme. Moreover, using chunked XML parsing and LWP::UserAgent callbacks does not yield performance gains (on reasonable hardware) for SOAP responses <=1MB. Martin Am Sonntag, den 12.10.2008, 06:21 -0400 schrieb Nomen Nescio via RT: Show quoted text
> Sun Oct 12 06:20:58 2008: Request 39982 was acted upon. > Transaction: Ticket created by nobody@dizum.com > Queue: SOAP-WSDL > Subject: feature request: options for dealing with large responses > Broken in: (no value) > Severity: (no value) > Owner: Nobody > Requestors: nobody@dizum.com > Status: new > Ticket <URL: http://rt.cpan.org/Ticket/Display.html?id=39982 > > > > would it be possble to support the ability to use callbacks or > temporary files when dealing with large messages? i'd like to > avoid having to load the entire message into memory if possible. > > thanks > >


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