About --skip networking in gbase 8A

I want to use it in an applet or application GBase JDBC, But get a similar one as follows
It's abnormal ：
SQLException: Cannot connect to GBase server on host:5258.
Is there a GBase server running on the machine/port you
are trying to connect to?
(java.security.AccessControlException)
SQLState: 08S01
VendorError: 0

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Other answers 1：

Maybe it's because the user is running Applet, User GBase server When installing “--skip-networking” Options , Or because GBase server Run behind the firewall .Applet Only the network connection can be returned to operation Web The server's machine , The Web The server provides for Applet Of .class file . It means , To make it work ,GBase Must run on the same machine （ Or you must redirect some kind of port ）. It also means that , You cannot pass your local file
System to test Java Program , You must put them in Web Server .
because Java I won't support it Unix Domain Socket ,GBase JDBC Only use TCP/IP And GBase signal communication . If GBase Start with “--skip-networking” sign , Contingent firewall , And GBase Of TCP/IP Communication may be affected .
If GBase Set... On startup “--skip-networking” Options , Users can create files /etc/gs.cnf Comment it out in . If the user's GBase server Behind the firewall , Then users need to modify the firewall configuration to allow users to run Java The host of the code is GBase Listening port （ Default is 5258） Give up GBase server Connect .