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-rw-r--r--src/libcharon/encoding/payloads/payload.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/libcharon/encoding/payloads/payload.h b/src/libcharon/encoding/payloads/payload.h
index 963c5f090..0060e3730 100644
--- a/src/libcharon/encoding/payloads/payload.h
+++ b/src/libcharon/encoding/payloads/payload.h
@@ -277,6 +277,13 @@ struct payload_t {
int (*get_encoding_rules) (payload_t *this, encoding_rule_t **rules);
/**
+ * Get non-variable header length for a variable length payload.
+ *
+ * @return fixed length of the payload
+ */
+ int (*get_header_length)(payload_t *this);
+
+ /**
* Get type of payload.
*
* @return type of this payload