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Follow-up to the truncate_message split-loop floor. Two review points:
- CapabilityDescriptor.from_json trusted the wire max_message_length
verbatim, so a connector advertising 0 ('no limit') — or a buggy one
sending 0/negative — produced a descriptor whose bound flowed straight
into the adapter's MAX_MESSAGE_LENGTH and truncate_message. Normalize
it to the documented 4096 default (mirrors from_platform_entry's
'or 4096' and docs/relay-connector-contract.md), fixing the degenerate
budget at its source rather than only surviving it downstream.
- Document the truncate_message length contract for a budget too small
for one codepoint (max_length=1 with a 2-unit surrogate pair under
utf16_len): the chunk intentionally exceeds max_length by that one
indivisible codepoint, because emitting it whole preserves content
where the alternatives are data loss or an infinite loop.
Tests: from_json normalizes 0 and negative bounds to 4096 and passes a
real positive bound through unchanged; the sub-codepoint budget emits
whole codepoints with no data loss (all emojis preserved) and a chunk
that necessarily exceeds the 1-unit budget.
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| .. | ||
| __init__.py | ||
| adapter.py | ||
| auth.py | ||
| descriptor.py | ||
| transport.py | ||
| ws_transport.py | ||