Unable to run btest against RouterOS 6.48

[NormHenderson]

Hi, this was a great contribution however I couldn't get it to work:

1. Installed on Ubuntu 20.04 using
   git clone https://github.com/samm-git/btest-opensource
   cd btest-opensource
   gcc -o btest *.c -lpthread

2. ran: ./btest -s -a admin -p password

3. On the router, ran:
   /tool bandwidth-test dur=5s dir=both user=admin pass=password prot=tcp addr=10.1.0.1
   status: test unsupported
   tx-current: 0bps
   tx-10-second-average: 0bps
   tx-total-average: 0bps
   rx-current: 0bps
   rx-10-second-average: 0bps
   rx-total-average: 0bps
   random-data: no
   direction: both
   connection-count: 20
   On the linux side, the output is:
   Running in server mode
   Listening
   Cmd buffer: 01030114008000000000000000000000
   proto=1
   direction=3
   random=1
   tcp_conn_count=20
   tx_size=32768
   client_buf_size=0
   remote_tx_speed=0
   local_tx_speed=0
   remoteIP=10.1.10.33
   Listening on TCP cmdsock
   Complete

4. same results with no username/password on either end, and same results with dir=transmit or dir=receive

5. Other direction: ran ./btest -c 10.1.10.33 -r -t -a admin -p password
   Remote did not return correct hello response
   Response: 03000000
   Same result with only -r or only -t

6. Installed on a different Ubuntu 20.04 system and ran the server there (with user/password) and the client on the first Ubuntu system as: ./btest -c 10.1.13.248 -r -t -a admin -p password - that produced results as expected.
   The first time I tried with -r only I got a series of 0.00kbps. However running it later with -r -t and then -t and then -r, all three cases produced realistic bandwidths.

[NormHenderson]

Update:

1. on RouterOS, /tool bandwidth-server set authenticate=no and then run btest as a client on Linux: works as expected.
2. running btest as a server on Linux, with no user/password, and running the client on RouterOS still produces the result "test unsupported" EXCEPT, if I leave out protocol=tcp (default therefore udp) the test runs but produces 0.0kb/s output.

[tangentsoft]

I'm seeing the same symptoms against RouterOS 7.1beta6 with your btest tool built from tip-of-master source on macOS 10.15.

[samm-git]

as i mentioned already - password auth will NOT work with any recent routeros as Mikrotik changed authentication and new format is not yet known.