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Release 2.19.0

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- [FEATURE] DPLPMTUD support.  IETF connections now search for the
  maximum packet size, improving throughput.
- [DEBUG] Record event in stream history when on_close() is called
  in dtor.
This commit is contained in:
Dmitri Tikhonov 2020-07-29 11:33:52 -04:00
parent b329a00e5e
commit b8fa619567
46 changed files with 3629 additions and 854 deletions
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65
include/lsquic.h
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@ -24,8 +24,8 @@ extern "C" {
#endif
#define LSQUIC_MAJOR_VERSION 2
#define LSQUIC_MINOR_VERSION 18
#define LSQUIC_PATCH_VERSION 2
#define LSQUIC_MINOR_VERSION 19
#define LSQUIC_PATCH_VERSION 0
/**
* Engine flags:
@ -350,12 +350,24 @@ typedef struct ssl_ctx_st * (*lsquic_lookup_cert_f)(
*/
#define LSQUIC_DF_GREASE_QUIC_BIT 1
/** By default, DPLPMTUD is enabled */
#define LSQUIC_DF_DPLPMTUD 1
/** By default, this value is left up to the engine. */
#define LSQUIC_DF_BASE_PLPMTU 0
/** By default, this value is left up to the engine. */
#define LSQUIC_DF_MAX_PLPMTU 0
/** By default, drop no-progress connections after 60 seconds on the server */
#define LSQUIC_DF_NOPROGRESS_TIMEOUT_SERVER 60
/** By default, do not use no-progress timeout on the client */
#define LSQUIC_DF_NOPROGRESS_TIMEOUT_CLIENT 0
/** By default, we use the minimum timer of 1000 milliseconds */
#define LSQUIC_DF_MTU_PROBE_TIMER 1000
struct lsquic_engine_settings {
/**
* This is a bit mask wherein each bit corresponds to a value in
@ -818,6 +830,49 @@ struct lsquic_engine_settings {
* Default value is @ref LSQUIC_DF_GREASE_QUIC_BIT
*/
int es_grease_quic_bit;
/**
* If set to true value, enable DPLPMTUD -- Datagram Packetization
* Layer Path MTU Discovery.
*
* Default value is @ref LSQUIC_DF_DPLPMTUD
*/
int es_dplpmtud;
/**
* PLPMTU size expected to work for most paths.
*
* If set to zero, this value is calculated based on QUIC and IP versions.
*
* Default value is @ref LSQUIC_DF_BASE_PLPMTU.
*/
unsigned short es_base_plpmtu;
/**
* Largest PLPMTU size the engine will try.
*
* If set to zero, picking this value is left to the engine.
*
* Default value is @ref LSQUIC_DF_MAX_PLPMTU.
*/
unsigned short es_max_plpmtu;
/**
* This value specifies how long the DPLPMTUD probe timer is, in
* milliseconds. [draft-ietf-tsvwg-datagram-plpmtud-17] says:
*
" PROBE_TIMER: The PROBE_TIMER is configured to expire after a period
" longer than the maximum time to receive an acknowledgment to a
" probe packet. This value MUST NOT be smaller than 1 second, and
" SHOULD be larger than 15 seconds. Guidance on selection of the
" timer value are provided in section 3.1.1 of the UDP Usage
" Guidelines [RFC8085].
*
* If set to zero, the default is used.
*
* Default value is @ref LSQUIC_DF_MTU_PROBE_TIMER.
*/
unsigned es_mtu_probe_timer;
};
/* Initialize `settings' to default values */
@ -1146,15 +1201,15 @@ lsquic_engine_new (unsigned lsquic_engine_flags,
* To let the engine specify QUIC version, use N_LSQVER. If session resumption
* information is supplied, version is picked from there instead.
*
* If `max_udp_payload_size' is set to zero, it is inferred based on `peer_sa':
* 1350 for IPv6 and 1370 for IPv4.
* If `base_plpmtu' is set to zero, it is selected based on the
* engine settings, QUIC version, and IP version.
*/
lsquic_conn_t *
lsquic_engine_connect (lsquic_engine_t *, enum lsquic_version,
const struct sockaddr *local_sa,
const struct sockaddr *peer_sa,
void *peer_ctx, lsquic_conn_ctx_t *conn_ctx,
const char *hostname, unsigned short max_udp_payload_size,
const char *hostname, unsigned short base_plpmtu,
const unsigned char *sess_resume, size_t sess_resume_len,
/** Resumption token: optional */
const unsigned char *token, size_t token_sz);