Skip to content

Fix check for retransmission of discarded block segments #546

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
acolomb merged 12 commits into from
Jun 11, 2025
Merged

Fix check for retransmission of discarded block segments #546

Show file tree
Hide file tree
Changes from 4 commits
Commits
Show all changes
12 commits
Select commit Hold shift + click to select a range
1a74fb6
Fixed : retransmission of discarded segments starts at beginning of n…
samsamfire Nov 6, 2024
33aa620
Test : add a block retransmit test. This test passes with this implem…
samsamfire Jan 15, 2025
7fe2c71
Comment : fixed wrong value in comment
samsamfire Jan 15, 2025
ab4d150
Comment : better comments on the different steps of the block
samsamfire Jan 15, 2025
2692989
Fix docstring.
acolomb Jun 9, 2025
43e9377
Fix quoting style to match surrounding code.
acolomb Jun 9, 2025
ff12cb4
Use test framework assertion instead of plain assert.
acolomb Jun 9, 2025
7822ca4
Merge branch 'canopen-python:master' into sdo-block-upload-retransmit…
samsamfire Jun 10, 2025
df4af56
Fixed : moved comments up (wrong line)
samsamfire Jun 10, 2025
37c6e4b
Changed : replace double x34 with x34/x33 to make it clearer that the…
samsamfire Jun 10, 2025
a0a40b8
Changed : reset _ackseq every block
samsamfire Jun 10, 2025
93ed50b
Update test/test_sdo.py
acolomb Jun 11, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion canopen/sdo/client.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -561,7 +561,7 @@ def _retransmit(self):
response = self.sdo_client.read_response()
res_command, = struct.unpack_from("B", response)
seqno = res_command & 0x7F
if seqno == self._ackseq + 1:
if seqno == 1:
Copy link
Member

@acolomb acolomb Feb 25, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'm wondering why the self._ack_block() call doesn't simply reset the self._ackseq attribute to zero in all cases. Then this check would be fine as is?

Just thinking out loud, let's hear your thoughts on why this is the better place to fix it.

Copy link
Member

@acolomb acolomb Jun 9, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

@samsamfire Are you still onto this?

# We should be back in sync
self._ackseq = seqno
return response
Expand Down
308 changes: 308 additions & 0 deletions test/test_sdo.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -170,6 +170,314 @@ def test_block_upload(self):
data = fp.read()
self.assertEqual(data, 'Tiny Node - Mega Domains !')

def test_sdo_block_upload_retransmit(self):
"""Send 'the crazy fox jumps over the lazy dog\n' multiple times
and trigger a retransmit by only validating a block partially.
"""
self.data = [
(TX, b"\xa4\x08\x10\x00\x7f\x00\x00\x00"),
(RX, b"\xc4\x08\x10\x00\x00\x00\x00\x00"),
(TX, b"\xa3\x00\x00\x00\x00\x00\x00\x00"),
(RX, b"\x01\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x02\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x03\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x04\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x05\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x06\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x07\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x08\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x09\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x0a\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x0b\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x0c\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x0d\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x0e\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x0f\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x10\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x11\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x12\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x13\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x14\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x15\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x16\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x17\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x18\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x19\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x1a\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x1b\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x1c\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x1d\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x1e\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x1f\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x20\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x21\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x22\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x23\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x24\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x25\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x26\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x27\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x28\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x29\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x2a\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x2b\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x2c\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x2d\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x2e\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x2f\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x30\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x31\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x32\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x34\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x34\x75\x6d\x70\x73\x20\x6f\x76"), # --> Wrong seqno (x34 instead of x33)
(RX, b"\x35\x65\x72\x20\x74\x68\x65\x20"), # All the following frames until end of block
(RX, b"\x36\x6c\x61\x7a\x79\x20\x64\x6f"), # will be ignored by the client and should be
(RX, b"\x37\x67\x0a\x74\x68\x65\x20\x63"), # resent by server.
(RX, b"\x38\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x39\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x3a\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x3b\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x3c\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x3d\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x3e\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x3f\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x40\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x41\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x42\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x43\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x44\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x45\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x46\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x47\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x48\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x49\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x4a\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x4b\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x4c\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x4d\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x4e\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x4f\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x50\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x51\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x52\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x53\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x54\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x55\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x56\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x57\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x58\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x59\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x5a\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x5b\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x5c\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x5d\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x5e\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x5f\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x60\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x61\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x62\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x63\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x64\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x65\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x66\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x67\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x68\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x69\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x6a\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x6b\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x6c\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x6d\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x6e\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x6f\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x70\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x71\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x72\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x73\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x74\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x75\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x76\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x77\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x78\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x79\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x7a\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x7b\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x7c\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x7d\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x7e\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x7f\x79\x20\x66\x6f\x78\x20\x6a"), # --> Last element of block
(TX, b"\xa2\x32\x7f\x00\x00\x00\x00\x00"), # --> Last good seqno (x32)
(RX, b"\x01\x79\x20\x66\x6f\x78\x20\x6a"), # --> Server starts resending from last acknowledged block
(RX, b"\x02\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x03\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x04\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x05\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x06\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x07\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x08\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x09\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x0a\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x0b\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x0c\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x0d\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x0e\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x0f\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x10\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x11\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x12\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x13\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x14\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x15\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x16\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x17\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x18\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x19\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x1a\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x1b\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x1c\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x1d\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x1e\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x1f\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x20\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x21\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x22\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x23\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x24\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x25\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x26\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x27\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x28\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x29\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x2a\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x2b\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x2c\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x2d\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x2e\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x2f\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x30\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x31\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x32\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x33\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x34\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x35\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x36\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x37\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x38\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x39\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x3a\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x3b\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x3c\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x3d\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x3e\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x3f\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x40\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x41\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x42\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x43\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x44\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x45\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x46\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x47\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x48\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x49\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x4a\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x4b\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x4c\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x4d\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x4e\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x4f\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x50\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x51\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x52\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x53\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x54\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x55\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x56\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x57\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x58\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x59\x6d\x70\x73\x20\x6f\x76\x65"),
(RX, b"\x5a\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x5b\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x5c\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x5d\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x5e\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x5f\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x60\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x61\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x62\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x63\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x64\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x65\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x66\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x67\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x68\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x69\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x6a\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x6b\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x6c\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x6d\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x6e\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x6f\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x70\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x71\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x72\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x73\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x74\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x75\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x76\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x77\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x78\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x79\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x7a\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x7b\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\x7c\x20\x64\x6f\x67\x0a\x74\x68"),
(RX, b"\x7d\x65\x20\x63\x72\x61\x7a\x79"),
(RX, b"\x7e\x20\x66\x6f\x78\x20\x6a\x75"),
(RX, b"\x7f\x6d\x70\x73\x20\x6f\x76\x65"),
(TX, b"\xa2\x7f\x7f\x00\x00\x00\x00\x00"), # --> This block is acknlowedged without issues
(RX, b"\x01\x72\x20\x74\x68\x65\x20\x6c"),
(RX, b"\x02\x61\x7a\x79\x20\x64\x6f\x67"),
(RX, b"\x03\x0a\x74\x68\x65\x20\x63\x72"),
(RX, b"\x04\x61\x7a\x79\x20\x66\x6f\x78"),
(RX, b"\x05\x20\x6a\x75\x6d\x70\x73\x20"),
(RX, b"\x06\x6f\x76\x65\x72\x20\x74\x68"),
(RX, b"\x07\x65\x20\x6c\x61\x7a\x79\x20"),
(RX, b"\x08\x64\x6f\x67\x0a\x74\x68\x65"),
(RX, b"\x09\x20\x63\x72\x61\x7a\x79\x20"),
(RX, b"\x0a\x66\x6f\x78\x20\x6a\x75\x6d"),
(RX, b"\x0b\x70\x73\x20\x6f\x76\x65\x72"),
(RX, b"\x0c\x20\x74\x68\x65\x20\x6c\x61"),
(RX, b"\x0d\x7a\x79\x20\x64\x6f\x67\x0a"),
(RX, b"\x0e\x74\x68\x65\x20\x63\x72\x61"),
(RX, b"\x0f\x7a\x79\x20\x66\x6f\x78\x20"),
(RX, b"\x10\x6a\x75\x6d\x70\x73\x20\x6f"),
(RX, b"\x11\x76\x65\x72\x20\x74\x68\x65"),
(RX, b"\x12\x20\x6c\x61\x7a\x79\x20\x64"),
(RX, b"\x13\x6f\x67\x0a\x74\x68\x65\x20"),
(RX, b"\x14\x63\x72\x61\x7a\x79\x20\x66"),
(RX, b"\x15\x6f\x78\x20\x6a\x75\x6d\x70"),
(RX, b"\x16\x73\x20\x6f\x76\x65\x72\x20"),
(RX, b"\x17\x74\x68\x65\x20\x6c\x61\x7a"),
(RX, b"\x18\x79\x20\x64\x6f\x67\x0a\x74"),
(RX, b"\x19\x68\x65\x20\x63\x72\x61\x7a"),
(RX, b"\x1a\x79\x20\x66\x6f\x78\x20\x6a"),
(RX, b"\x1b\x75\x6d\x70\x73\x20\x6f\x76"),
(RX, b"\x1c\x65\x72\x20\x74\x68\x65\x20"),
(RX, b"\x1d\x6c\x61\x7a\x79\x20\x64\x6f"),
(RX, b"\x1e\x67\x0a\x74\x68\x65\x20\x63"),
(RX, b"\x1f\x72\x61\x7a\x79\x20\x66\x6f"),
(RX, b"\x20\x78\x20\x6a\x75\x6d\x70\x73"),
(RX, b"\x21\x20\x6f\x76\x65\x72\x20\x74"),
(RX, b"\x22\x68\x65\x20\x6c\x61\x7a\x79"),
(RX, b"\xa3\x20\x64\x6f\x67\x0a\x00\x00"),
(TX, b"\xa2\x23\x7f\x00\x00\x00\x00\x00"),
(RX, b"\xc9\x3b\x49\x00\x00\x00\x00\x00"),
(TX, b"\xa1\x00\x00\x00\x00\x00\x00\x00"), # --> Transfer ends without issues
]
data = []
with self.network[2].sdo[0x1008].open("r", block_transfer=True) as fp:
data = fp.read()
assert data == 39 * "the crazy fox jumps over the lazy dog\n"

def test_writable_file(self):
self.data = [
(TX, b'\x20\x00\x20\x00\x00\x00\x00\x00'),
Expand Down
Loading