diff options
Diffstat (limited to 'src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h')
| -rw-r--r-- | src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h index 2a069ef..2f9275c 100644 --- a/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h +++ b/src/contrib/libngtcp2/ngtcp2/lib/ngtcp2_ppe.h @@ -41,6 +41,9 @@ typedef struct ngtcp2_ppe { ngtcp2_buf buf; ngtcp2_crypto_cc *cc; + /* dgram_offset is the offset in UDP datagram payload that this QUIC + packet is positioned at. */ + size_t dgram_offset; /* hdlen is the number of bytes for packet header written in buf. */ size_t hdlen; /* len_offset is the offset to Length field. */ @@ -61,7 +64,7 @@ typedef struct ngtcp2_ppe { * ngtcp2_ppe_init initializes |ppe| with the given buffer. */ void ngtcp2_ppe_init(ngtcp2_ppe *ppe, uint8_t *out, size_t outlen, - ngtcp2_crypto_cc *cc); + size_t dgram_offset, ngtcp2_crypto_cc *cc); /* * ngtcp2_ppe_encode_hd encodes |hd|. @@ -110,13 +113,26 @@ size_t ngtcp2_ppe_left(ngtcp2_ppe *ppe); */ size_t ngtcp2_ppe_pktlen(ngtcp2_ppe *ppe); -/** - * @function +/* + * ngtcp2_ppe_dgram_padding is equivalent to call + * ngtcp2_ppe_dgram_padding_size(ppe, NGTCP2_MAX_UDP_PAYLOAD_SIZE). + * This function should be called just before calling + * ngtcp2_ppe_final(). + * + * This function returns the number of bytes padded. + */ +size_t ngtcp2_ppe_dgram_padding(ngtcp2_ppe *ppe); + +/* + * ngtcp2_ppe_dgram_padding_size adds PADDING frame so that the size + * of a UDP datagram payload is at least |n| bytes long. If it is + * unable to add PADDING in that way, this function still adds PADDING + * frame as much as possible. This function should be called just + * before calling ngtcp2_ppe_final(). * - * `ngtcp2_ppe_padding` encodes PADDING frames to the end of the - * buffer. This function returns the number of bytes padded. + * This function returns the number of bytes added as padding. */ -size_t ngtcp2_ppe_padding(ngtcp2_ppe *ppe); +size_t ngtcp2_ppe_dgram_padding_size(ngtcp2_ppe *ppe, size_t n); /* * ngtcp2_ppe_padding_hp_sample adds PADDING frame if the current |