ffi.error: struct tr_tcp_config: wrong total size (cdef says 24, but C compiler says 48).

[ychlgdr]

When I was using the python-binding, I tried using RTRManager. However, the following error occurred. Could it be due to an update in the rtrlib code that this repository has not yet updated?

Traceback (most recent call last):
  File "rtr_receiver.py", line 41, in <module>
    main()
  File "rtr_receiver.py", line 37, in main
    start_rtr_receiver(rtr_host, rtr_port)
  File "rtr_receiver.py", line 11, in start_rtr_receiver
    manager = RTRManager(rtr_host, rtr_port,pfx_update_callback=callback)
  File "/usr/local/lib/python3.8/dist-packages/rtrlib-0.1-py3.8-linux-x86_64.egg/rtrlib/rtr_manager.py", line 138, in __init__
    self.tcp_config = ffi.new('struct tr_tcp_config *')
ffi.error: struct tr_tcp_config: wrong total size (cdef says 24, but C compiler says 48). fix it or use "...;" as the last field in the cdef for struct tr_tcp_config to make it flexible

[jayeshkumarbhoi]

Yes I do have same issue.

File "/usr/local/lib/python3.12/site-packages/rtrlib-0.1-py3.12-linux-x86_64.egg/rtrlib/rtr_manager.py", line 138, in __init__
    self.tcp_config = ffi.new('struct tr_tcp_config *')
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ffi.error: struct tr_tcp_config: wrong total size (cdef says 24, but C compiler says 48). fix it or use "...;" as the last field in the cdef for struct tr_tcp_config to make it flexible

I have found it was works with cffi==1.15.1 but now it pulling latest cffi which is cffi==1.16.0 and with this version above error started to appear.

[jayeshkumarbhoi]

Anyone have idea how to resolve this issue?

[mroethke]

Should be fixed on master, can you verify?

[jayeshkumarbhoi]

@mroethke Thanks, It is working now. Thanks for quick fix.