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tlv: add library for new message/payload serialization format #3061

Merged
merged 9 commits into from
Aug 7, 2019
Merged

tlv: add library for new message/payload serialization format #3061

merged 9 commits into from
Aug 7, 2019

Commits on Aug 7, 2019

  1. tlv/varint: add modified bitcoin varint 

    This varint has the same serialization as the varint in btcd and
bitcoind, but has different behavior wrt returned errors. In order to
ensure the inner loop properly detects cleanly written records,
ReadVarInt will not only return EOF if it can't read the first byte, as
that means the reader has zero bytes left.

It also modifies the API to allow the caller to provided a static byte
array, which can be reused across all encoding and decoding and
increases performance.
    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  2. tlv/varint_test: add tests vectors for custom Read/WriteVarInt

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  3. tlv/primitive: add primitive encodings

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  4. tlv/record: adds various tlv record constructors

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  5. tlv/stream: adds tlv stream encoding/decoding

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  6. tlv: zero alloc encoding for extended types 

    This commit adds concrete encoding methods for primitive integral types.
When external libs need to create custom encoders, this allows them to
do so without incurring an extra allocation on the heap. Previously, the
need to pass a pointer to the integer using an interface{} would cause
the argument to escape, which we avoid by having them copied directly.
    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  7. tlv/bench_test: add basic benchmark

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  8. tlv/truncated: add truncated integer encodings 

    This commit adds the truncated integer encodings used in the
variable-size onion payloads. The amount and cltv delta both use the
truncated encoding to shave bytes in the overall size, and will likely
be used in the future for additional extensions where size is a
constraint.
    @cfromknecht
    cfromknecht committed Aug 7, 2019
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  9. tlv/tlv_test: add BOLT1 test vectors

    @cfromknecht
    cfromknecht committed Aug 7, 2019
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