[krkhan@orthanc rpc]$ ./add_client localhost
Enter a (hex): 11223344
Enter b (hex): 55667788
parameters: 0x11223344, 0x55667788

[root@orthanc rpc]# ./add_server
add function called
parameters: 0x11223344, 0x55667788

[krkhan@orthanc rpc]$ ./add_client localhost
Enter a (hex): 1122334455667788
Enter b (hex): 002224466
parameters: 0x1122334455667788, 0x2224466
call failed: RPC: Can't encode arguments