[Zope] XML-RPC Error

[Tino Wildenhain]

On Thu, 30 Jan 2003 10:48:52 +0530
"Zope@Stylus" <zope@stylusinc.net> wrote:

Hi,

> Hi
> 
> Thanks for the insight into the working of XML-RPC
> I am still confused as to how exactly I can be assured of  the response
> being sent back to the client from where the request came.
> Could you please help me out here.
> How exactly does the XML-RPC server know to which client the response is to
> be sent back ?

XML-RPC works over HTTP, HTTP uses TCP/IP for data transport.
TCP maintains a bidirectional transport session during the
complete connect. Its simply: (connection open),client sends to server,
waits for answer, server gets clients data, calculates
response, server sends, clients gets response, (connection close)

HTTP/1.1 (see rfc2616 on faqs.org) even allows reusing of connections
and so on. But in basic it works like described above.

Thats true for all TCP based protocolls, for example mail (smtp),
ftp, HTTP when used for web-pages in browsers, ssh, telnet, pop3,
imap, ...

HTH
Tino Wildenhain


> Thanks once again
> Best Regards
> John Kunchandy
> 
> 
> : Zope@Stylus wrote at 2003-1-29 14:08 +0530:
> :  > I am working on an VB.NET client side application that sends requests
> in
> :  > XML-RPC to a Zope server running on Linux(Mandrake 8.0)
> :  > The request calls a python script and it returns a String .
> :  > But when there are multiple requests (i.e; from different machines on
> the
> :  > network) .the XmlRPc Server throws an XML RPC Fault Error.
> : The 2.6 "xmlrpc.py" file provides support for a traceback.
> : It will tell you about the location and cause of the exception.
> :
> : I think, I posted a patch with similar functionality for Zope 2.5.1.
> : Search the archives...
> :
> :  > Does XML-RPC Server maintain a record of the IP address of the client
> :  > machine that sent the request so that it can respond back to the same
> :  > machine?
> : No, it does not.
> :
> : TCP/IP connections (and therefore HTTP and
> : XML-RPC connections) are bi-directional.
> : You can read and write to them. TCP/IP transparently handles
> : the transport. (Of course, TCP/IP knows the IP address of both
> : ends of the connection).
> :
> :
> :
> : Dieter
> :
> :
> 
> 
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