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sphinx: Make payload size computation publicly available

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This commit is contained in:
Christian Decker
2020-01-08 22:05:16 +01:00
parent 0eaba5600a
commit dff0a13bd1
2 changed files with 6 additions and 1 deletions
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2
common/sphinx.c
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@@ -83,7 +83,7 @@ static size_t sphinx_hop_size(const struct sphinx_hop *hop)
return tal_bytelen(hop->raw_payload) + HMAC_SIZE;
}
static size_t sphinx_path_payloads_size(const struct sphinx_path *path)
size_t sphinx_path_payloads_size(const struct sphinx_path *path)
{
size_t size = 0;
for (size_t i=0; i<tal_count(path->hops); i++)

5
common/sphinx.h
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@@ -221,4 +221,9 @@ struct sphinx_path *sphinx_path_new_with_key(const tal_t *ctx,
void sphinx_add_hop(struct sphinx_path *path, const struct pubkey *pubkey,
const u8 *payload TAKES);
/**
* Compute the size of the serialized payloads.
*/
size_t sphinx_path_payloads_size(const struct sphinx_path *path);
#endif /* LIGHTNING_COMMON_SPHINX_H */