Packet tracer bridge jar file

Question

root@prateek-desktop:/root/ptbridge-master# java -jar ptbridge.jar
OpenJDK Server VM warning: You have loaded library /tmp/packetsocket5426320610063427559 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /tmp/packetsocket5426320610063427559: /tmp/packetsocket5426320610063427559: wrong ELF class: ELFCLASS64 (Possible cause: architecture word width mismatch)
    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
    at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1968)
    at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1893)
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1854)
    at java.lang.Runtime.load0(Runtime.java:795)
    at java.lang.System.load(System.java:1062)
    at at.stefl.packetsocket.NativeLibraryLoader.load(NativeLibraryLoader.java:41)
    at at.stefl.packetsocket.EthernetSocket.<clinit>(EthernetSocket.java:78)
    at at.stefl.ptbridge.main.Main.main(Main.java:49)

Can some one please help in resolving these exceptions ?

Answer 1

The core problem is a mismatch in the libraries being expected. An ELFCLASS64 file is designed for 64-bit libraries, not 32-bit.

As you stated in comments, you have 32-bit Ubuntu; this means you have 32bit libraries and cannot execute 64-bit programs. You will need to install and run 64-bit Ubuntu if your architecture supports it, so that you can have the proper version of the libraries necessary to run Packet Tracer Bridge.

If your system does not support a 64-bit OS then you will either need to see if Packet Tracer Bridge has a 32-bit version, or you will have to replace your computer with one that supports 64-bit operating systems, or you will have to just not use Packet Tracer Bridge.