Hello all.

I'm having a really hard time with D3 sockets.

I cannot get a D3 socket to connect to the outside world. I can get the
outside world to connect to a socket server/listner on my D3/Linux
system but cannot make it work the other way round. I have a short Java
server program listening to port 2002 the D3 machine which gives visual
feedback about incomming connections. I can connect to this Java server
using another Java program - even using an external connection such as
Windows XP Telnet. It is just the D3 program that won't connect. Are
D3/Linux client sockets broken?


Here is the essential code (transcribed):

cfunction socket.builtin
include dm,bp,includes sysid.inc
include dm,bp.unix.h socket.h

SOC.ID = %socket(AF$INET, SOCK$STREAM, 0)
IF SOCK.ID < 0 THEN
... handle error ...
END

PORT = 2002
ERR.FLAG = %connect(SOC.ID, AF$INET, "127.0.0.1", PORT)
IF ERR.FLAG < 0 THEN
CRT 'Unable to establish connection'
END ELSE
CRT 'Got a connection'
END

%close(SOCK.ID)



The issue is not firewalling or ethernet. I can connect to the Java
server (on the localhost) with anything else - just NOT D3.

Thanks in advance.


John Bend.

John wrote:
I think I recall reading that the host argument of the %connect function
needs to be a name. I wonder if you susbstitute "localhost" for the IP
address and make sure your hosts file contains that name and it points
to 127.0.0.1.

Its worth a try.

--
Bob Little
Graphik Dimensions, Ltd.
High Point, NC

It's OK - problem solved many thanks.

My actual code was allowing PORT to be interpreted as a string rather
than an integer. Meanwhile the port had got stuffed.

Using PORT = PARAM<whatever> + 0 solves the problem.


John Bend.



John wrote: