Re: communication between vb and java

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"Adrian Chen" <aoopopopo@xxxxxxx> schrieb im Newsbeitrag
news:%23Ra3h74$IHA.4032@xxxxxxxxxxxxxxxxxxxxxxx
Hi everybody,I am strugglling with a problem for a whole day,but still
cannot resolve it.Please give me some suggestion.

I want a client (written by VB6.0) to communication with a server(written
by JAVA).In the debug mode, in the server side ,the server call the java
function "accept()" to block and wait any request from client.Then a
client
using the control in VB6.0: Winsock calls "Winsock1.connect" function to
connect to the server side .And indeed the server receive the request and
programming point(under debug mode) move to next line.And the client go on
to next statement: Winsock1.Senddata str to send the string to server
,then
the problem come up:VB prompt up a box saying:"Run-time error: '40006'
Wrong
protocol or connection state for the requested transaction or request".And
I
check the value of the property "Winsock1.state" is 6(SckConnecting).

Then maybe your breakpoint at the serverside Java-Code
suppresses the socket-connect-attempt (not entirely
accepted and finished) at the server-end. That's why
your VB6-socketstate probably remains in the
'connecting'-state - maybe your debugging works
a bit more reliable, if you set your server-breakpoint
somewhat later, after the socket-request is fully
accepted, so that the VB-clientside-socket can enter
its 'connected'-state. Then you should be able, to
watch or step through the packet-oriented roundtrip,
since this socketstate (a fully established connection)
is "more robust".

Olaf


.

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