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| -rw-r--r-- | java/demo/Ice/applet/README | 50 |
1 files changed, 29 insertions, 21 deletions
diff --git a/java/demo/Ice/applet/README b/java/demo/Ice/applet/README index 3881675954f..8462ff418b4 100644 --- a/java/demo/Ice/applet/README +++ b/java/demo/Ice/applet/README @@ -27,33 +27,41 @@ restrictions on your server host to allow the applet to establish connections to the hello server. -Loading the applet locally --------------------------- +Java security policy +-------------------- -The simplest way to use the applet is to open the start page -(hello.html) as a local file directly from your browser. In this case, -you must start the hello server on the same host and enter "localhost" -or "127.0.0.1" as the server host name in the applet. +The applet's JAR file is not signed, therefore the Java plug-in may +refuse to allow the applet to connect to the Ice server. In this +situation, the applet will report a SocketException in its status +bar, and the Java console will show an exception that includes an +"access denied" error. + +To temporarily work around the issue, locate the java.policy file +on your system. For example, you might find it here: + + C:\Program Files\Java\jre1.8.0_xx\lib\security -Note however that the applet security manager in some versions of Java -may prevent the applet from connecting to the local host. If the -applet reports a SocketException error in its status bar, open the -Java console and review the exception stack trace. The most likely -occurrence is an "access denied" error, which indicates that the -security manager rejected the applet's connection attempt. You can -solve this issue by temporarily granting for the applet to connect to -the local machine. For example, if you are using JRE6 on Windows, open -the following file: +Edit this file as an administrator. In the "grant" section, add the +line shown below: - C:\Program Files\Java\jre6\lib\security\java.policy + permission java.net.SocketPermission "<host>:1024-", "connect,resolve"; -In the "grant" section, add the line shown below: +Replace "<host>" with the host name or IP address of the machine on +which the Ice server is running. For example, if you are loading the +applet locally as a file, replace "<host>" with "localhost". - permission java.net.SocketPermission "localhost:1024-", "connect,resolve"; +Save the changes, restart the browser, and load the applet again to +confirm it can connect. Don't forget to remove this line from the +java.policy file when you're finished. -Restart your browser and try the applet again. If the applet still -cannot establish a connection, try loading it from a web server -instead. + +Loading the applet locally +-------------------------- + +The simplest way to use the applet is to open the start page +(hello.html) as a local file directly from your browser. In this case, +you must start the hello server on the same host and enter "localhost" +as the server host name in the applet. Loading the applet from a web server |