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perf(protocol): pack metadata into one frame (PROTOCOL 2.20.0)

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TapTap
2026-09-13 04:08:36 +02:00
parent ddc71a7df5
commit 317d5d081a
8 changed files with 210 additions and 168 deletions
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src/shared/metadata.h
+7 -1
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@@ -29,7 +29,13 @@
/* Size of metadata fields on wire, excluding the int32_t `present` field that
* is always sent first. The total wire size for present metadata is
* sizeof(int32_t) + FILE_METADATA_WIRE_SIZE (68 bytes on most platforms). */
* sizeof(int32_t) + FILE_METADATA_WIRE_SIZE (68 bytes on most platforms).
*
* metadata_send()/metadata_receive() (protocol 2.20.0) frame the metadata as a
* single packed record: one int32 present flag (0 = absent) followed, when
* present, by exactly FILE_METADATA_WIRE_SIZE bytes of field data. This is the
* same present+fields byte layout metadata_to_buf()/metadata_from_buf() use, so
* the wire metadata is now one frame instead of one frame per field. */
#define FILE_METADATA_WIRE_SIZE (sizeof(int32_t) * 5 + sizeof(int64_t) * 6)
void metadata_to_buf(char** buf, const FileMetadata* m);