applet servlet communication - security problem

[plingwood]

when i try to open a URLCOnnection to a servlet i keep getting the below error message.<br>This worked not so long ago .. and no code has been changed<br>any one know why ... thanks.<br>Included below is the troublesome snippet of code :<br><br><br>ERROR MESSAGE :<br>com.ms.security.SecurityExceptionEx[Unknown]: cannot access &quot;server_name&quot; at com/ms/security/permissions/NetIOPermission.check (NetIOPermission.java)<br><br> at com/ms/security/PolicyEngine.deepCheck (PolicyEngine.java)<br><br> at com/ms/security/PolicyEngine.checkPermission (PolicyEngine.java)<br><br> at com/ms/security/StandardSecurityManager.chk (StandardSecurityManager.java)<br><br> at com/ms/security/StandardSecurityManager.chkex (StandardSecurityManager.java)<br><br> at com/ms/security/StandardSecurityManager.checkConnect <br>(StandardSecurityManager.java)<br><br> at com/ms/net/wininet/WininetURLConnection.connect (WininetURLConnection.java)<br><br> at com/ms/net/wininet/http/HttpURLConnection.getOutputStream (HttpURLConnection.java)<br> at TEApplet.sendPostObject (TEApplet.java:156)<br> at TEApplet.sendObject (TEApplet.java:122)<br> at TEApplet.sendData (TEApplet.java:102)<br><br><br>#########################################################<br>CODE SNIPPET :<br>public InputStream sendPostObject(Serializable obj) <br> throws IOException {<br>&nbsp;&nbsp;&nbsp;URL servlet = new URL(&quot;/servlets/TheServlet&quot;<br>&nbsp;&nbsp;&nbsp;URLConnection con = servlet.openConnection();<br>&nbsp;&nbsp;&nbsp;if (con == null)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;con.setDoInput(true);<br>&nbsp;&nbsp;&nbsp;con.setDoOutput(true);<br>&nbsp;&nbsp;&nbsp;con.setUseCaches(false);<br> <br>&nbsp;&nbsp;&nbsp;// the error occurs at this line<br>&nbsp;&nbsp;&nbsp;ObjectOutputStream out = new <br>&nbsp;&nbsp;&nbsp;ObjectOutputStream(con.getOutputStream());<br>&nbsp;&nbsp;&nbsp;out.writeObject(obj);<br>&nbsp;&nbsp;&nbsp;out.flush();<br>&nbsp;&nbsp;&nbsp;out.close();<br>&nbsp;&nbsp;&nbsp;InputStream i = con.getInputStream();<br>&nbsp;&nbsp;&nbsp;return i;<br>}

 

[mithra]

Hi .<br>&nbsp;&nbsp;&nbsp;I think you are forming URL without Host name and port address;<br><br>&nbsp;Try with this Connection URL:<br>&nbsp;&nbsp;&nbsp;(&quot;<A HREF="

http://hostname:portno/servlet"

TARGET="_new">

http://hostname:portno/servlet</A>)<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;I

hope this will work<br><br>Mithra

 

[Gooser]

I believe that your firewall policy is not allowing your applet to communicate with the server.

Try changing the policy.