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Release 2.25.0

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- [API, FEATURE] Add es_delay_onclose option to delay on_close until all
  data is ACKed.  Use new function lsquic_stream_has_unacked_data() to
  learn whether peer acknowledged all data written to stream.
- [API] Add optional on_reset() stream callback to get notifications
  when RESET or STOP_SENDING frames are received.
- [BUGFIX] On STOP_SENDING, make conn tickable is _writeable_, not
  readable.
This commit is contained in:
Dmitri Tikhonov 2020-12-04 11:29:14 -05:00
parent 57fe5a13ac
commit 7f96c7c7f3
13 changed files with 300 additions and 58 deletions
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35
include/lsquic.h
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@ -24,8 +24,8 @@ extern "C" {
#endif
#define LSQUIC_MAJOR_VERSION 2
#define LSQUIC_MINOR_VERSION 24
#define LSQUIC_PATCH_VERSION 5
#define LSQUIC_MINOR_VERSION 25
#define LSQUIC_PATCH_VERSION 0
/**
* Engine flags:
@ -210,6 +210,17 @@ struct lsquic_stream_if {
* perform a session resumption next time around.
*/
void (*on_sess_resume_info)(lsquic_conn_t *c, const unsigned char *, size_t);
/**
* Optional callback is called as soon as the peer resets a stream.
* The argument `how' is either 0, 1, or 2, meaning "read", "write", and
* "read and write", respectively (just like in shutdown(2)). This
* signals the user to stop reading, writing, or both.
*
* Note that resets differ in gQUIC and IETF QUIC. In gQUIC, `how' is
* always 2; in IETF QUIC, `how' is either 0 or 1 because on can reset
* just one direction in IETF QUIC.
*/
void (*on_reset) (lsquic_stream_t *s, lsquic_stream_ctx_t *h, int how);
};
struct ssl_ctx_st;
@ -411,6 +422,9 @@ typedef struct ssl_ctx_st * (*lsquic_lookup_cert_f)(
/** By default, we use the minimum timer of 1000 milliseconds */
#define LSQUIC_DF_MTU_PROBE_TIMER 1000
/** By default, calling on_close() is not delayed */
#define LSQUIC_DF_DELAY_ONCLOSE 0
struct lsquic_engine_settings {
/**
* This is a bit mask wherein each bit corresponds to a value in
@ -1005,6 +1019,16 @@ struct lsquic_engine_settings {
es_ptpc_int_gain, /* LSQUIC_DF_PTPC_INT_GAIN */
es_ptpc_err_thresh, /* LSQUIC_DF_PTPC_ERR_THRESH */
es_ptpc_err_divisor; /* LSQUIC_DF_PTPC_ERR_DIVISOR */
/**
* When set to true, the on_close() callback will be delayed until the
* peer acknowledges all data sent on the stream. (Or until the connection
* is destroyed in some manner -- either explicitly closed by the user or
* as a result of an engine shutdown.)
*
* Default value is @ref LSQUIC_DF_DELAY_ONCLOSE
*/
int es_delay_onclose;
};
/* Initialize `settings' to default values */
@ -1636,6 +1660,13 @@ int lsquic_stream_shutdown(lsquic_stream_t *s, int how);
int lsquic_stream_close(lsquic_stream_t *s);
/**
* Return true if peer has not ACKed all data written to the stream. This
* includes both packetized and buffered data.
*/
int
lsquic_stream_has_unacked_data (lsquic_stream_t *s);
/**
* Get certificate chain returned by the server. This can be used for
* server certificate verification.