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Added support for dynamic link MTU discovery

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This commit is contained in:
Mark Qvist 2025-01-12 23:24:27 +01:00
parent c28adee5ac
commit 6567c3a09d
2 changed files with 8 additions and 4 deletions
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6
rnsh/initiator.py
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@ -448,21 +448,23 @@ async def initiate(configdir: str, identitypath: str, verbosity: int, quietness:
chunk_segment = None
chunk_segment = None
max_data_len = channel.mdu - protocol.StreamDataMessage.OVERHEAD
while chunk_len > 32 and comp_try < comp_tries:
chunk_segment_length = int(chunk_len/comp_try)
compressed_chunk = bz2.compress(buf[:chunk_segment_length])
compressed_length = len(compressed_chunk)
if compressed_length < protocol.StreamDataMessage.MAX_DATA_LEN and compressed_length < chunk_segment_length:
if compressed_length < max_data_len and compressed_length < chunk_segment_length:
comp_success = True
break
else:
comp_try += 1
if comp_success:
diff = max_data_len - len(compressed_chunk)
chunk = compressed_chunk
processed_length = chunk_segment_length
else:
chunk = bytes(buf[:protocol.StreamDataMessage.MAX_DATA_LEN])
chunk = bytes(buf[:max_data_len])
processed_length = len(chunk)
return comp_success, processed_length, chunk

6
rnsh/session.py
View File

@ -218,21 +218,23 @@ class ListenerSession:
chunk_segment = None
chunk_segment = None
max_data_len = self.channel.mdu - protocol.StreamDataMessage.OVERHEAD
while chunk_len > 32 and comp_try < comp_tries:
chunk_segment_length = int(chunk_len/comp_try)
compressed_chunk = bz2.compress(buf[:chunk_segment_length])
compressed_length = len(compressed_chunk)
if compressed_length < protocol.StreamDataMessage.MAX_DATA_LEN and compressed_length < chunk_segment_length:
if compressed_length < max_data_len and compressed_length < chunk_segment_length:
comp_success = True
break
else:
comp_try += 1
if comp_success:
diff = max_data_len - len(compressed_chunk)
chunk = compressed_chunk
processed_length = chunk_segment_length
else:
chunk = bytes(buf[:protocol.StreamDataMessage.MAX_DATA_LEN])
chunk = bytes(buf[:max_data_len])
processed_length = len(chunk)
return comp_success, processed_length, chunk