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From Vy Ho <st946...@drexel.edu>
Subject Re: Axis C++ 1.3 final is released
Date Mon, 01 Nov 2004 20:18:23 GMT

TCP/IP is very unreliable.  It has a check sum that is not good enough 
given enough packages going through the network.  This is being 
discussed somewhere on the net.  One of the system I worked on involved 
a C++ client talks to a java server.  In a controlled environment, 
things work, but when deployed, it will crash the clients once awhile.  
The java side is really  good with drop connection, corruption of 
network data, etc.  However, the C++ side is not so good.  It was 
Ace/Tao then (Corba). The guy at Ace/Tao did not want to fix this.  So, 
I switched to Soap, and use gSoap instead.  It again shows a same 
problem with a test that I created.  I send this to the author of 
gSoap.  In no time, he indentifies and fixes problems associated with 
this.  So, with gSoap, no matter how I want to corrupt the message, the 
thing just work (it could return errors, but does not crash).  This 
really impresses me.  The client implementation was a success.  To me, 
this is a must to be production ready.  So how to test this?  Think of 
the Tcp monitor.  You can add a flag to enable the corruption of 
messages.  When it's on, a random length message can be 
added/inserted/xor randomly at various random point in the Soap/xml 
message.  With this corruption, the Soap engine must deal with this 
graciously all the time.  Test can run to make dummy request milllion of 
times to make sure that the thing is rock solid.  Please note that the 
random data can be anything valid/invalid characters in Soap, xml.  To 
make sure the library is very good, you can try to disconnect the 
networks (like disable the network card) while communication, and make 
sure a gracious handling is used.


Sanjiva Weerawarana wrote:

>Can you expand a bit more on what you have in mind? I am pretty
>sure even Axis/Java doesn't test for this kind of stuff and
>its certainly used in production widely :-).
>
>Sanjiva.
>
>----- Original Message ----- 
>From: "Vy Ho" <st946tbf@drexel.edu>
>To: <axis-user@ws.apache.org>
>Sent: Monday, November 01, 2004 8:57 PM
>Subject: Re: Axis C++ 1.3 final is released
>
>
>  
>
>>Did developers of Axis C++ tested this with corruption of TCP/IP 
>>packages?  That is to introduce random corruptions into the message at 
>>different places, and runs for hours or days?  The library should handle 
>>this without a problem (not crashing).  If this is not tested, then I 
>>don't think it's production ready.
>>
>>axis cpp wrote:
>>
>>    
>>
>>>Hi All,
>>>
>>>The Apache Axis C++ team would like to announce the
>>>Final release of Axis c++ 1.3.
>>>The binary and source distributions can be downloaded
>>>from
>>>http://ws.apache.org/axis/cpp/download.html
>>>                                                     
>>>                                                     
>>>              
>>>                                                     
>>>                                                     
>>>                                                     
>>>                                                     
>>>                             
>>>This release includes bug fixes from Axis C++ 1.2 and
>>>the following features.
>>>                                                     
>>>                                                     
>>>              
>>>                                                     
>>>                                                     
>>>                                                     
>>>                                                     
>>>                             
>>> -A new transport which eleminate most of the
>>>problems   
>>>  encountered in the older transport
>>>                                                     
>>>                                                     
>>>              
>>> -Improvements to wsdl2ws tool
>>>  Synchronizing the wsdl2ws tool with the latest Axis
>>>  Java
>>>                                                     
>>>                                                     
>>>              
>>> -Support for non-wrapped style code generation for
>>>  doclit type Namespace support
>>>                                                     
>>>                                                     
>>>              
>>> -Simpler build and deploying process in Linux
>>>  Additional ant build support(For building the
>>>client
>>>  library and related only)
>>>                                                     
>>>                                                     
>>>              
>>> -Clear seperation of API and non API header files
>>>                                                     
>>>                                                     
>>>              
>>> -Simple axis server which can be used for easy
>>>server
>>>  side testing
>>>                                                     
>>>                                                     
>>>              
>>> -Improved and upto-date documenation
>>>
>>>regards,
>>>The Axis C++ team
>>>
>>>
>>>
>>>__________________________________
>>>Do you Yahoo!?
>>>Yahoo! Mail Address AutoComplete - You start. We finish.
>>>http://promotions.yahoo.com/new_mail 
>>> 
>>>
>>>      
>>>
>>    
>>


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