Web services

Tony Rogvall <>
Mon Nov 7 23:26:46 CET 2005


7 nov 2005 kl. 23.03 skrev Mikael Karlsson:

> Interesting!
>
> It seems also that some discovered that sending those XML messages  
> on the line
> take some bandwidth and processing power for binding (oops what a  
> surprise)
> so there is a proposal for "Fast Web Services" which in practice  
> seems to be
> an ASN.1 representation of XML Schema.
> Since Erlang has an ASN1 encoder/decoder this might be something to  
> look
> closer at.

If they do it the XML way (with out reading) they MUST surely embed  
the XML string
into the request. The addition of the isWBXML flag is my own  
invention to make the
size of the PDU a LOT smaller...

Request ::= SEQUENCE
{
	isWBXML	BOOLEAN,
	data	 OCTET STRING	 -- Put you XML or WBXML request data here
}

Response ::= SEQUENCE
{
	isWBXML	BOOLEAN,
	data	 OCTET STRING	 -- Put you XML or WBXML response here
}

This is very similar to how Nokia is using Corba/Java RMI in the NPS  
(Nokia Profile Server)

	String resolve (String request, String sessionID)

The request is of course XML and the response is... XML

/Tony


> Refs:
> http://java.sun.com/developer/technicalArticles/WebServices/fastWS/
> http://asn1.elibel.tm.fr/xml/fws.htm
> http://asn1.elibel.tm.fr/xml/tutorial-fws.htm
>
> /Mikael
>
> måndag 07 november 2005 10:33 skrev Joe Armstrong (AL/EAB):
>> How about rnc? - I have a relax NG verifyer (in Erlang)
>> which I might be persuaded to part with.
>>
>> /Joe
>>
>>> -----Original Message-----
>>> From: 
>>> [mailto:]On Behalf Of Ulf Wiger
>>> (AL/EAB)
>>> Sent: den 7 november 2005 09:37
>>> To: chandru; Anindya Mozumdar
>>> Cc: 
>>> Subject: RE: Web services
>>>
>>>
>>>
>>> One thing notably missing in this regard is support for
>>> XMLSchema.
>>>
>>> Any takers?  (:
>>>
>>> /Uffe
>>>
>>>> -----Original Message-----
>>>> From: 
>>>> [mailto:] On Behalf Of chandru
>>>> Sent: den 7 november 2005 09:18
>>>> To: Anindya Mozumdar
>>>> Cc: 
>>>> Subject: Re: Web services
>>>>
>>>> On 07/11/05, Anindya Mozumdar <> wrote:
>>>>> Hi,
>>>>>     I am relatively new to both Erlang and Web Services, so
>>>>
>>>> pardon my
>>>>
>>>>> rather silly question - Are there are any
>>>
>>> API's/implementations in
>>>
>>>>> Erlang for Web Services (SOAP, WSDL and UDDI), like the
>>>>
>>>> ones readily
>>>>
>>>>> avaiable in Java ?
>>>>
>>>> There is a basic soap-client and soap-server written by
>>>
>>> Erik Reitsma.
>>>
>>>> I have version 0.2 of it and I can send it to you if you want
>>>> it. But it is quite basic. The good news is that the most of
>>>> the tools you need to build Web Services are already
>>>> available :-) You have yaws/inets for a webserver,
>>>> ibrowse/inets for a HTTP client and xmerl for XML parsing.
>>>> You just have to implement the bits you need from various
>>>> standards :-)
>>>>
>>>> cheers
>>>> Chandru




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