litespeed-quic/test/unittests/test_cubic.c

125 lines
3.1 KiB
C

/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc. See LICENSE. */
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/queue.h>
#ifndef WIN32
#include <unistd.h>
#else
#include <getopt.h>
#endif
#include "lsquic.h"
#include "lsquic_int_types.h"
#include "lsquic_cong_ctl.h"
#include "lsquic_cubic.h"
#include "lsquic_logger.h"
#include "lsquic_hash.h"
#include "lsquic_conn.h"
#include "lsquic_sfcw.h"
#include "lsquic_conn_flow.h"
#include "lsquic_varint.h"
#include "lsquic_hq.h"
#include "lsquic_stream.h"
#include "lsquic_rtt.h"
#include "lsquic_conn_public.h"
#include "lsquic_packet_common.h"
#include "lsquic_packet_out.h"
static const struct cong_ctl_if *const cci = &lsquic_cong_cubic_if;
static void
test_post_quiescence_explosion (void)
{
struct lsquic_cubic cubic;
lsquic_time_t const rtt = 10000;
lsquic_time_t t = 12345600;
struct lsquic_conn lconn = LSCONN_INITIALIZER_CIDLEN(lconn, 8);
struct lsquic_conn_public conn_pub = { .lconn = &lconn, };
int i;
struct lsquic_packet_out packet_out = {};
cci->cci_init(&cubic, &conn_pub, 0);
cubic.cu_ssthresh = cubic.cu_cwnd = 32 * 1370;
for (i = 0; i < 10; ++i)
{
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 0);
}
assert(cci->cci_get_cwnd(&cubic) == 47026);
t += 25 * 1000 * 1000;
cci->cci_was_quiet(&cubic, t, 0 /* bytes in flight (unused) */);
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 0);
assert(cci->cci_get_cwnd(&cubic) == 47060);
t += 2 * 1000 * 1000;
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 0);
}
static void
test_post_quiescence_explosion2 (void)
{
struct lsquic_cubic cubic;
lsquic_time_t const rtt = 10000;
lsquic_time_t t = 12345600;
struct lsquic_conn lconn = LSCONN_INITIALIZER_CIDLEN(lconn, 8);
struct lsquic_conn_public conn_pub = { .lconn = &lconn, };
int i;
struct lsquic_packet_out packet_out = {};
cci->cci_init(&cubic, &conn_pub, 0);
cubic.cu_ssthresh = cubic.cu_cwnd = 32 * 1370;
for (i = 0; i < 10; ++i)
{
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 1);
}
assert(cci->cci_get_cwnd(&cubic) == 45300);
t += 25 * 1000 * 1000;
cci->cci_was_quiet(&cubic, t, 0 /* bytes in flight (unused) */);
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 0);
assert(cci->cci_get_cwnd(&cubic) == 46754);
t += 2 * 1000 * 1000;
packet_out.po_sent = t - rtt;
cci->cci_ack(&cubic, &packet_out, 1370, t, 1);
}
int
main (int argc, char **argv)
{
int opt;
lsquic_log_to_fstream(stderr, LLTS_NONE);
while (-1 != (opt = getopt(argc, argv, "l:")))
{
switch (opt)
{
case 'l':
lsquic_logger_lopt(optarg);
break;
default:
exit(EXIT_FAILURE);
break;
}
}
test_post_quiescence_explosion();
test_post_quiescence_explosion2();
exit(EXIT_SUCCESS);
}