On Tue, 2 Apr 2002, Evan Jehu wrote: > Sorry, I may have become sidetracked. > > Passing the clients IP/FQDN:port to the server to allow callback would > effectively make the client a web service in itself?
Indeed. It isn't clear exactly what you are trying to accomplish. The key question is whether the client-server connection is going to be dropped. If it is, then the client needs to pass back enough information to allow a connection to be re-established. This is at least the IP/FQDN:port. The client is going to have to listen for connections on the port, so, yes, it's acting as a server as well. > To set this up would I > need to run the axis servlet (and servlet engine) on the client side as > well, or is it possible to run a more minimal system there? "How long is a piece of string?" ;-) It's impossible to answer the question without knowing more about your intended application. You say that the server will be publishing information to multiple clients. What protocol will you be using for sending the information out? What is the client doing with it? Writing a minimal server to, say, receive information and store it to a database is easy enough. However, if you want it to appear on a pop-up window, then perhaps yes using Jabber would make sense. > My thought was, could using Jabber solve the direct IP addressing and DNS > lookup problems when the client is behind a masqueraded internet connection > or firewall? > > Evan > > > ----- Original Message ----- > From: "Jim Dixon" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Tuesday, April 02, 2002 09:44 > Subject: Re: pass by reference in Axis > > > > On Tue, 2 Apr 2002, Evan Jehu wrote: > > > > > Would it be possible to do something like SOAP over Jabber (the open > source > > > chat system) this could allow a 2 way 'conversation' between the client > and > > > server? > > > > > > If you think that could work? is so any thoughts on how it could be > > > implemented? > > > > The original question had to do with passing a remote reference, which > > would be used to enable the server to publish information to a number > > of clients. > > > > In the simplest approach, both parties understand how the information > > is going to be structured. In this case, the client just has to tell > > the server how to reach it, so the client only has to tell the server > > where to send the information. This is most easily specified as > > FQDN:port or ipAddress:port. > > > > If the structure isn't certain, the client could send to the server > > FQDN:port plus a WSDL description of the communication. > > > > Or am I missing something? > > > > > Evan > > > > > > > > > ----- Original Message ----- > > > From: "Jim Dixon" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Tuesday, April 02, 2002 09:10 > > > Subject: Re: pass by reference in Axis > > > > > > > > > > On Tue, 2 Apr 2002, Steve Loughran wrote: > > > > > > > > > > Is it possible to pass a remote reference using SOAP and Axis? I > > > would > > > > > like > > > > > > to establish a publisher-subscriber style relationship between a > > > client > > > > > > (which implements a listener interface) and an Axis web service. > > > > > > > > > > > > I have created the web service class, event class (Serializable) > and > > > event > > > > > > listener interface (modeled on SWING) but WSDL2Java creates a > class > > > for > > > > > the > > > > > > listener interface when I really need to pass a reference to the > > > client > > > > > for > > > > > > the service to call when events occur. > > > > > > > > > > > > Also is it possible to operate in the other direction, could a web > > > service > > > > > > create a new object which it passes as a remote reference to the > > > client > > > > > and > > > > > > if so how could you do it? > > > > > > > > > > do you meant that you want to do callbacks from a SOAP service to > the > > > > > client? > > > > > > > > > > If that is the case there is no easy solution at all, not one that > works > > > > > over HTTP and through firewalls and things. You need polling, or > > > different > > > > > transports like STMP somewhere in the solution. > > > > > > > > Couldn't he accomplish what he needs to do by passing to the server > > > > the fully qualified domain name + the port he would be listening on? > > > > > > > > -- > > > > Jim Dixon [EMAIL PROTECTED] tel +44 117 982 0786 mobile +44 797 373 > 7881 > > > > ---------- THAT'S A CHANGE OF ADDRESS: I'm no longer > [EMAIL PROTECTED] -------- > > > > > > > > > > > > > > > > > > -- > > Jim Dixon [EMAIL PROTECTED] tel +44 117 982 0786 mobile +44 797 373 7881 > > ---------- THAT'S A CHANGE OF ADDRESS: I'm no longer [EMAIL PROTECTED] -------- > > > > -- Jim Dixon [EMAIL PROTECTED] tel +44 117 982 0786 mobile +44 797 373 7881 ---------- THAT'S A CHANGE OF ADDRESS: I'm no longer [EMAIL PROTECTED] --------
