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microsoft.public.dotnet.framework.aspnet.webservices

web service callback

William

1/1/2003 5:43:00 PM

Can i use web services to call back a client when I want
to.. Not a delay but when the service has something for a
client to call the stub or application for that client. I
know that web services keep the location of the client for
the a callback asychronous but how do i keep that
information for later pinging.


any help or direction would be greatly appreciated
5 Answers

Marina

1/2/2003 4:40:00 PM

0

No. Web Services go over HTTP - which are connectionless. The client will
need to periodically ask the web service if it has something new for it.

"william newsom" <wnewsom@versionthree.com> wrote in message
news:004a01c2b1b4$ed7a7390$d3f82ecf@TK2MSFTNGXA10...
> Can i use web services to call back a client when I want
> to.. Not a delay but when the service has something for a
> client to call the stub or application for that client. I
> know that web services keep the location of the client for
> the a callback asychronous but how do i keep that
> information for later pinging.
>
>
> any help or direction would be greatly appreciated

Scott Swigart

1/2/2003 9:27:00 PM

0

Or you will need to implement a web service on both ends (which won't work
if there's a firewall in the way). Then the client can call into the
server, and the server can call back into the client.


--
Scott Swigart
www.3leaf.com
Early Adopter Weblog: http://radio.weblogs.co...


"Marina" <zlatkinam@nospam.hotmail.com> wrote in message
news:O9A9IVnsCHA.1636@TK2MSFTNGP12...
> No. Web Services go over HTTP - which are connectionless. The client will
> need to periodically ask the web service if it has something new for it.
>
> "william newsom" <wnewsom@versionthree.com> wrote in message
> news:004a01c2b1b4$ed7a7390$d3f82ecf@TK2MSFTNGXA10...
> > Can i use web services to call back a client when I want
> > to.. Not a delay but when the service has something for a
> > client to call the stub or application for that client. I
> > know that web services keep the location of the client for
> > the a callback asychronous but how do i keep that
> > information for later pinging.
> >
> >
> > any help or direction would be greatly appreciated
>
>

William

1/2/2003 10:18:00 PM

0

Yes i was going to use remoting but that requires a port and of course when dealing with firewalls only port 80 is the most open.

back to the drawing board

Steve Jackson

1/3/2003 7:44:00 PM

0

If communication is travelling over port 80 why wouldn't
this work with a firewall?

>-----Original Message-----
>Or you will need to implement a web service on both ends
(which won't work
>if there's a firewall in the way). Then the client can
call into the
>server, and the server can call back into the client.
>
>
>--
>Scott Swigart
>www.3leaf.com
>Early Adopter Weblog: http://radio.weblogs.co...
>
>
>"Marina" <zlatkinam@nospam.hotmail.com> wrote in message
>news:O9A9IVnsCHA.1636@TK2MSFTNGP12...
>> No. Web Services go over HTTP - which are
connectionless. The client will
>> need to periodically ask the web service if it has
something new for it.
>>
>> "william newsom" <wnewsom@versionthree.com> wrote in
message
>> news:004a01c2b1b4$ed7a7390$d3f82ecf@TK2MSFTNGXA10...
>> > Can i use web services to call back a client when I
want
>> > to.. Not a delay but when the service has something
for a
>> > client to call the stub or application for that
client. I
>> > know that web services keep the location of the
client for
>> > the a callback asychronous but how do i keep that
>> > information for later pinging.
>> >
>> >
>> > any help or direction would be greatly appreciated
>>
>>
>
>
>.
>

Scott Swigart

1/3/2003 9:23:00 PM

0

Firewalls/proxies generally don't let external HTTP requests come into the
LAN.

"Steve Jackson" <sejackson@seanet.com> wrote in message
news:001801c2b358$1d9d0980$d7f82ecf@TK2MSFTNGXA14...
> If communication is travelling over port 80 why wouldn't
> this work with a firewall?
>
> >-----Original Message-----
> >Or you will need to implement a web service on both ends
> (which won't work
> >if there's a firewall in the way). Then the client can
> call into the
> >server, and the server can call back into the client.
> >
> >
> >--
> >Scott Swigart
> >www.3leaf.com
> >Early Adopter Weblog: http://radio.weblogs.co...
> >
> >
> >"Marina" <zlatkinam@nospam.hotmail.com> wrote in message
> >news:O9A9IVnsCHA.1636@TK2MSFTNGP12...
> >> No. Web Services go over HTTP - which are
> connectionless. The client will
> >> need to periodically ask the web service if it has
> something new for it.
> >>
> >> "william newsom" <wnewsom@versionthree.com> wrote in
> message
> >> news:004a01c2b1b4$ed7a7390$d3f82ecf@TK2MSFTNGXA10...
> >> > Can i use web services to call back a client when I
> want
> >> > to.. Not a delay but when the service has something
> for a
> >> > client to call the stub or application for that
> client. I
> >> > know that web services keep the location of the
> client for
> >> > the a callback asychronous but how do i keep that
> >> > information for later pinging.
> >> >
> >> >
> >> > any help or direction would be greatly appreciated
> >>
> >>
> >
> >
> >.
> >