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litespeed-quic/test/http_client.c
Dmitri Tikhonov 4d83f5bd45 Release 1.17.15 
- [BUGFIX] http_client: make sure only one read per on_read() callback
  is performed in the header conversion bypass (-B) mode.
- http_client: with -E, assign random priority when stream is created.
- [OPTIMIZATION] On immediate write, place an ACK frame into the first
  buffered packet if an ACK is queued.  This reduces the number of
  standalone ACK packets.
- [OPTIMIZATION] Allow placing more than one STREAM frame from the same
  stream into an outgoing packet.  This change minimizes the number of
  buffered packets required to store several small HTTP messages by
  virtue of allowing more than one STREAM frame from HEADERS stream in
  the same packet.
- [OPTIMIZATION] Flush headers when writing to buffered packets.  This
  causes the headers to be written to the same buffered packet queue,
  thereby improving packet utilization, especially for small HTTP
  messages.
2019-01-21 09:07:02 -05:00

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/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc. See LICENSE. */
/*
* http_client.c -- A simple HTTP/QUIC client
*/
#ifndef WIN32
#include <arpa/inet.h>
#include <netinet/in.h>
#else
#include <Windows.h>
#include <WinSock2.h>
#include <io.h>
#include <stdlib.h>
#include <getopt.h>
#define STDOUT_FILENO 1
#define random rand
#pragma warning(disable:4996) //POSIX name deprecated
#endif
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/queue.h>
#ifndef WIN32
#include <unistd.h>
#include <sys/types.h>
#include <dirent.h>
#include <limits.h>
#endif
#include <sys/stat.h>
#include <fcntl.h>
#include <event2/event.h>
#include <math.h>
#ifndef WIN32
#include <openssl/bio.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#endif
#include "lsquic.h"
#include "test_common.h"
#include "prog.h"
#include "../src/liblsquic/lsquic_logger.h"
#include "../src/liblsquic/lsquic_int_types.h"
#include "../src/liblsquic/lsquic_util.h"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
/* This is used to exercise generating and sending of priority frames */
static int randomly_reprioritize_streams;
static int s_display_cert_chain;
/* If this file descriptor is open, the client will accept server push and
* dump the contents here. See -u flag.
*/
static int promise_fd = -1;
/* Set to true value to use header bypass. This means that the use code
* creates header set via callbacks and then fetches it by calling
* lsquic_stream_get_hset() when the first "on_read" event is called.
*/
static int g_header_bypass;
static int s_discard_response;
struct sample_stats
{
unsigned n;
unsigned long min, max;
unsigned long sum; /* To calculate mean */
unsigned long sum_X2; /* To calculate stddev */
};
static struct sample_stats s_stat_to_conn, /* Time to connect */
s_stat_ttfb,
s_stat_req; /* From TTFB to EOS */
static unsigned s_stat_conns_ok, s_stat_conns_failed;
static unsigned long s_stat_downloaded_bytes;
static void
update_sample_stats (struct sample_stats *stats, unsigned long val)
{
LSQ_DEBUG("%s: %p: %lu", __func__, stats, val);
if (stats->n)
{
if (val < stats->min)
stats->min = val;
else if (val > stats->max)
stats->max = val;
}
else
{
stats->min = val;
stats->max = val;
}
stats->sum += val;
stats->sum_X2 += val * val;
++stats->n;
}
static void
calc_sample_stats (const struct sample_stats *stats,
long double *mean_p, long double *stddev_p)
{
unsigned long mean, tmp;
if (stats->n)
{
mean = stats->sum / stats->n;
*mean_p = (long double) mean;
if (stats->n > 1)
{
tmp = stats->sum_X2 - stats->n * mean * mean;
tmp /= stats->n - 1;
*stddev_p = sqrtl((long double) tmp);
}
else
*stddev_p = 0;
}
else
{
*mean_p = 0;
*stddev_p = 0;
}
}
struct lsquic_conn_ctx;
struct path_elem {
TAILQ_ENTRY(path_elem) next_pe;
const char *path;
};
struct http_client_ctx {
TAILQ_HEAD(, lsquic_conn_ctx)
conn_ctxs;
const char *hostname;
const char *method;
const char *payload;
char payload_size[20];
/* hcc_path_elems holds a list of paths which are to be requested from
* the server. Each new request gets the next path from the list (the
* iterator is stored in hcc_cur_pe); when the end is reached, the
* iterator wraps around.
*/
TAILQ_HEAD(, path_elem) hcc_path_elems;
struct path_elem *hcc_cur_pe;
unsigned hcc_total_n_reqs;
unsigned hcc_reqs_per_conn;
unsigned hcc_concurrency;
unsigned hcc_cc_reqs_per_conn;
unsigned hcc_n_open_conns;
enum {
HCC_SEEN_FIN = (1 << 1),
HCC_ABORT_ON_INCOMPLETE = (1 << 2),
} hcc_flags;
struct prog *prog;
};
struct lsquic_conn_ctx {
TAILQ_ENTRY(lsquic_conn_ctx) next_ch;
lsquic_conn_t *conn;
struct http_client_ctx *client_ctx;
lsquic_time_t ch_created;
unsigned ch_n_reqs; /* This number gets decremented as streams are closed and
* incremented as push promises are accepted.
*/
unsigned ch_n_cc_streams; /* This number is incremented as streams are opened
* and decremented as streams are closed. It should
* never exceed hcc_cc_reqs_per_conn in client_ctx.
*/
};
struct hset_elem
{
STAILQ_ENTRY(hset_elem) next;
unsigned name_idx;
char *name;
char *value;
};
STAILQ_HEAD(hset, hset_elem);
static void
hset_dump (const struct hset *, FILE *);
static void
hset_destroy (void *hset);
static void
display_cert_chain (lsquic_conn_t *);
static void
create_connections (struct http_client_ctx *client_ctx)
{
while (client_ctx->hcc_n_open_conns < client_ctx->hcc_concurrency &&
client_ctx->hcc_total_n_reqs > 0)
if (0 != prog_connect(client_ctx->prog))
{
LSQ_ERROR("connection failed");
exit(EXIT_FAILURE);
}
}
static void
create_streams (struct http_client_ctx *client_ctx, lsquic_conn_ctx_t *conn_h)
{
while (conn_h->ch_n_reqs - conn_h->ch_n_cc_streams &&
conn_h->ch_n_cc_streams < client_ctx->hcc_cc_reqs_per_conn)
{
lsquic_conn_make_stream(conn_h->conn);
conn_h->ch_n_cc_streams++;
}
}
static lsquic_conn_ctx_t *
http_client_on_new_conn (void *stream_if_ctx, lsquic_conn_t *conn)
{
struct http_client_ctx *client_ctx = stream_if_ctx;
lsquic_conn_ctx_t *conn_h = calloc(1, sizeof(*conn_h));
conn_h->conn = conn;
conn_h->client_ctx = client_ctx;
conn_h->ch_n_reqs = MIN(client_ctx->hcc_total_n_reqs,
client_ctx->hcc_reqs_per_conn);
client_ctx->hcc_total_n_reqs -= conn_h->ch_n_reqs;
TAILQ_INSERT_TAIL(&client_ctx->conn_ctxs, conn_h, next_ch);
++conn_h->client_ctx->hcc_n_open_conns;
create_streams(client_ctx, conn_h);
conn_h->ch_created = lsquic_time_now();
return conn_h;
}
struct create_another_conn_or_stop_ctx
{
struct event *event;
struct http_client_ctx *client_ctx;
};
static void
create_another_conn_or_stop (evutil_socket_t sock, short events, void *ctx)
{
struct create_another_conn_or_stop_ctx *const cacos = ctx;
struct http_client_ctx *const client_ctx = cacos->client_ctx;
event_del(cacos->event);
event_free(cacos->event);
free(cacos);
create_connections(client_ctx);
if (0 == client_ctx->hcc_n_open_conns)
{
LSQ_INFO("All connections are closed: stop engine");
prog_stop(client_ctx->prog);
}
}
static void
http_client_on_conn_closed (lsquic_conn_t *conn)
{
lsquic_conn_ctx_t *conn_h = lsquic_conn_get_ctx(conn);
struct create_another_conn_or_stop_ctx *cacos;
enum LSQUIC_CONN_STATUS status;
struct event_base *eb;
char errmsg[80];
status = lsquic_conn_status(conn, errmsg, sizeof(errmsg));
LSQ_INFO("Connection closed. Status: %d. Message: %s", status,
errmsg[0] ? errmsg : "<not set>");
if (conn_h->client_ctx->hcc_flags & HCC_ABORT_ON_INCOMPLETE)
{
if (!(conn_h->client_ctx->hcc_flags & HCC_SEEN_FIN))
abort();
}
TAILQ_REMOVE(&conn_h->client_ctx->conn_ctxs, conn_h, next_ch);
--conn_h->client_ctx->hcc_n_open_conns;
cacos = calloc(1, sizeof(*cacos));
if (!cacos)
{
LSQ_ERROR("cannot allocate cacos");
exit(1);
}
eb = prog_eb(conn_h->client_ctx->prog);
cacos->client_ctx = conn_h->client_ctx;
cacos->event = event_new(eb, -1, 0, create_another_conn_or_stop, cacos);
if (!cacos->event)
{
LSQ_ERROR("cannot allocate event");
exit(1);
}
if (0 != event_add(cacos->event, NULL))
{
LSQ_ERROR("cannot add cacos event");
exit(1);
}
event_active(cacos->event, 0, 0);
free(conn_h);
}
static void
http_client_on_hsk_done (lsquic_conn_t *conn, int ok)
{
lsquic_conn_ctx_t *conn_h;
LSQ_INFO("handshake %s", ok ? "completed successfully" : "failed");
if (ok && s_display_cert_chain)
display_cert_chain(conn);
if (ok)
{
conn_h = lsquic_conn_get_ctx(conn);
++s_stat_conns_ok;
update_sample_stats(&s_stat_to_conn,
lsquic_time_now() - conn_h->ch_created);
}
else
++s_stat_conns_failed;
}
struct lsquic_stream_ctx {
lsquic_stream_t *stream;
struct http_client_ctx *client_ctx;
const char *path;
enum {
HEADERS_SENT = (1 << 0),
PROCESSED_HEADERS = 1 << 1,
} sh_flags;
lsquic_time_t sh_created;
lsquic_time_t sh_ttfb;
unsigned count;
struct lsquic_reader reader;
};
static lsquic_stream_ctx_t *
http_client_on_new_stream (void *stream_if_ctx, lsquic_stream_t *stream)
{
const int pushed = lsquic_stream_is_pushed(stream);
if (pushed)
{
LSQ_INFO("not accepting server push");
lsquic_stream_refuse_push(stream);
return NULL;
}
lsquic_stream_ctx_t *st_h = calloc(1, sizeof(*st_h));
st_h->stream = stream;
st_h->client_ctx = stream_if_ctx;
st_h->sh_created = lsquic_time_now();
if (st_h->client_ctx->hcc_cur_pe)
{
st_h->client_ctx->hcc_cur_pe = TAILQ_NEXT(
st_h->client_ctx->hcc_cur_pe, next_pe);
if (!st_h->client_ctx->hcc_cur_pe) /* Wrap around */
st_h->client_ctx->hcc_cur_pe =
TAILQ_FIRST(&st_h->client_ctx->hcc_path_elems);
}
else
st_h->client_ctx->hcc_cur_pe = TAILQ_FIRST(
&st_h->client_ctx->hcc_path_elems);
st_h->path = st_h->client_ctx->hcc_cur_pe->path;
if (st_h->client_ctx->payload)
{
st_h->reader.lsqr_read = test_reader_read;
st_h->reader.lsqr_size = test_reader_size;
st_h->reader.lsqr_ctx = create_lsquic_reader_ctx(st_h->client_ctx->payload);
if (!st_h->reader.lsqr_ctx)
exit(1);
}
else
st_h->reader.lsqr_ctx = NULL;
LSQ_INFO("created new stream, path: %s", st_h->path);
lsquic_stream_wantwrite(stream, 1);
if (randomly_reprioritize_streams)
lsquic_stream_set_priority(stream, 1 + (random() & 0xFF));
return st_h;
}
static void
send_headers (lsquic_stream_ctx_t *st_h)
{
const char *hostname = st_h->client_ctx->hostname;
if (!hostname)
hostname = st_h->client_ctx->prog->prog_hostname;
lsquic_http_header_t headers_arr[] = {
{
.name = { .iov_base = ":method", .iov_len = 7, },
.value = { .iov_base = (void *) st_h->client_ctx->method,
.iov_len = strlen(st_h->client_ctx->method), },
},
{
.name = { .iov_base = ":scheme", .iov_len = 7, },
.value = { .iov_base = "HTTP", .iov_len = 4, }
},
{
.name = { .iov_base = ":path", .iov_len = 5, },
.value = { .iov_base = (void *) st_h->path,
.iov_len = strlen(st_h->path), },
},
{
.name = { ":authority", 10, },
.value = { .iov_base = (void *) hostname,
.iov_len = strlen(hostname), },
},
/*
{
.name = { "host", 4 },
.value = { .iov_base = (void *) st_h->client_ctx->hostname,
.iov_len = strlen(st_h->client_ctx->hostname), },
},
*/
{
.name = { .iov_base = "user-agent", .iov_len = 10, },
.value = { .iov_base = (char *) st_h->client_ctx->prog->prog_settings.es_ua,
.iov_len = strlen(st_h->client_ctx->prog->prog_settings.es_ua), },
},
/* The following headers only gets sent if there is request payload: */
{
.name = { .iov_base = "content-type", .iov_len = 12, },
.value = { .iov_base = "application/octet-stream", .iov_len = 24, },
},
{
.name = { .iov_base = "content-length", .iov_len = 14, },
.value = { .iov_base = (void *) st_h->client_ctx->payload_size,
.iov_len = strlen(st_h->client_ctx->payload_size), },
},
};
lsquic_http_headers_t headers = {
.count = sizeof(headers_arr) / sizeof(headers_arr[0]),
.headers = headers_arr,
};
if (!st_h->client_ctx->payload)
headers.count -= 2;
if (0 != lsquic_stream_send_headers(st_h->stream, &headers,
st_h->client_ctx->payload == NULL))
{
LSQ_ERROR("cannot send headers: %s", strerror(errno));
exit(1);
}
}
/* This is here to exercise lsquic_conn_get_server_cert_chain() API */
static void
display_cert_chain (lsquic_conn_t *conn)
{
STACK_OF(X509) *chain;
X509_NAME *name;
X509 *cert;
unsigned i;
char buf[100];
chain = lsquic_conn_get_server_cert_chain(conn);
if (!chain)
{
LSQ_WARN("could not get server certificate chain");
return;
}
for (i = 0; i < sk_X509_num(chain); ++i)
{
cert = sk_X509_value(chain, i);
name = X509_get_subject_name(cert);
LSQ_INFO("cert #%u: name: %s", i,
X509_NAME_oneline(name, buf, sizeof(buf)));
X509_free(cert);
}
sk_X509_free(chain);
}
static void
http_client_on_write (lsquic_stream_t *stream, lsquic_stream_ctx_t *st_h)
{
ssize_t nw;
if (st_h->sh_flags & HEADERS_SENT)
{
if (st_h->client_ctx->payload && test_reader_size(st_h->reader.lsqr_ctx) > 0)
{
nw = lsquic_stream_writef(stream, &st_h->reader);
if (nw < 0)
{
LSQ_ERROR("write error: %s", strerror(errno));
exit(1);
}
if (test_reader_size(st_h->reader.lsqr_ctx) > 0)
{
lsquic_stream_wantwrite(stream, 1);
}
else
{
lsquic_stream_shutdown(stream, 1);
lsquic_stream_wantread(stream, 1);
}
}
else
{
lsquic_stream_shutdown(stream, 1);
lsquic_stream_wantread(stream, 1);
}
}
else
{
st_h->sh_flags |= HEADERS_SENT;
send_headers(st_h);
}
}
static void
http_client_on_read (lsquic_stream_t *stream, lsquic_stream_ctx_t *st_h)
{
struct http_client_ctx *const client_ctx = st_h->client_ctx;
struct hset *hset;
ssize_t nread;
unsigned old_prio, new_prio;
unsigned char buf[0x200];
unsigned nreads = 0;
#ifdef WIN32
srand(GetTickCount());
#endif
do
{
if (g_header_bypass && !(st_h->sh_flags & PROCESSED_HEADERS))
{
hset = lsquic_stream_get_hset(stream);
if (!hset)
{
LSQ_ERROR("could not get header set from stream");
exit(2);
}
st_h->sh_ttfb = lsquic_time_now();
update_sample_stats(&s_stat_ttfb, st_h->sh_ttfb - st_h->sh_created);
if (s_discard_response)
LSQ_DEBUG("discard response: do not dump headers");
else
hset_dump(hset, stdout);
hset_destroy(hset);
st_h->sh_flags |= PROCESSED_HEADERS;
}
else if (nread = lsquic_stream_read(stream, buf, sizeof(buf)), nread > 0)
{
s_stat_downloaded_bytes += nread;
if (!g_header_bypass && !(st_h->sh_flags & PROCESSED_HEADERS))
{
/* First read is assumed to be the first byte */
st_h->sh_ttfb = lsquic_time_now();
update_sample_stats(&s_stat_ttfb,
st_h->sh_ttfb - st_h->sh_created);
st_h->sh_flags |= PROCESSED_HEADERS;
}
if (!s_discard_response)
write(STDOUT_FILENO, buf, nread);
if (randomly_reprioritize_streams && (st_h->count++ & 0x3F) == 0)
{
old_prio = lsquic_stream_priority(stream);
new_prio = 1 + (random() & 0xFF);
#ifndef NDEBUG
const int s =
#endif
lsquic_stream_set_priority(stream, new_prio);
assert(s == 0);
LSQ_DEBUG("changed stream %u priority from %u to %u",
lsquic_stream_id(stream), old_prio, new_prio);
}
}
else if (0 == nread)
{
update_sample_stats(&s_stat_req, lsquic_time_now() - st_h->sh_ttfb);
client_ctx->hcc_flags |= HCC_SEEN_FIN;
lsquic_stream_shutdown(stream, 0);
break;
}
else if (client_ctx->prog->prog_settings.es_rw_once && EWOULDBLOCK == errno)
{
LSQ_NOTICE("emptied the buffer in 'once' mode");
break;
}
else
{
LSQ_ERROR("could not read: %s", strerror(errno));
exit(2);
}
}
while (client_ctx->prog->prog_settings.es_rw_once
&& nreads++ < 3 /* Emulate just a few reads */);
}
static void
http_client_on_close (lsquic_stream_t *stream, lsquic_stream_ctx_t *st_h)
{
const int pushed = lsquic_stream_is_pushed(stream);
if (pushed)
{
assert(NULL == st_h);
return;
}
LSQ_INFO("%s called", __func__);
struct http_client_ctx *const client_ctx = st_h->client_ctx;
lsquic_conn_t *conn = lsquic_stream_conn(stream);
lsquic_conn_ctx_t *conn_h;
TAILQ_FOREACH(conn_h, &client_ctx->conn_ctxs, next_ch)
if (conn_h->conn == conn)
break;
assert(conn_h);
--conn_h->ch_n_reqs;
--conn_h->ch_n_cc_streams;
if (0 == conn_h->ch_n_reqs)
{
LSQ_INFO("all requests completed, closing connection");
lsquic_conn_close(conn_h->conn);
}
else
{
LSQ_INFO("%u active stream, %u request remain, creating %u new stream",
conn_h->ch_n_cc_streams,
conn_h->ch_n_reqs - conn_h->ch_n_cc_streams,
MIN((conn_h->ch_n_reqs - conn_h->ch_n_cc_streams),
(client_ctx->hcc_cc_reqs_per_conn - conn_h->ch_n_cc_streams)));
create_streams(client_ctx, conn_h);
}
if (st_h->reader.lsqr_ctx)
destroy_lsquic_reader_ctx(st_h->reader.lsqr_ctx);
free(st_h);
}
const struct lsquic_stream_if http_client_if = {
.on_new_conn = http_client_on_new_conn,
.on_conn_closed = http_client_on_conn_closed,
.on_new_stream = http_client_on_new_stream,
.on_read = http_client_on_read,
.on_write = http_client_on_write,
.on_close = http_client_on_close,
.on_hsk_done = http_client_on_hsk_done,
};
static void
usage (const char *prog)
{
const char *const slash = strrchr(prog, '/');
if (slash)
prog = slash + 1;
printf(
"Usage: %s [opts]\n"
"\n"
"Options:\n"
" -p PATH Path to request. May be specified more than once.\n"
" -n CONNS Number of concurrent connections. Defaults to 1.\n"
" -r NREQS Total number of requests to send. Defaults to 1.\n"
" -R MAXREQS Maximum number of requests per single connection. Some\n"
" connections will have fewer requests than this.\n"
" -w CONCUR Number of concurrent requests per single connection.\n"
" Defaults to 1.\n"
" -m METHOD Method. Defaults to GET.\n"
" -P PAYLOAD Name of the file that contains payload to be used in the\n"
" request. This adds two more headers to the request:\n"
" content-type: application/octet-stream and\n"
" content-length\n"
" -K Discard server response\n"
" -I Abort on incomplete reponse from server\n"
" -4 Prefer IPv4 when resolving hostname\n"
" -6 Prefer IPv6 when resolving hostname\n"
#ifndef WIN32
" -C DIR Certificate store. If specified, server certificate will\n"
" be verified.\n"
#endif
" -a Display server certificate chain after successful handshake.\n"
" -t Print stats to stdout.\n"
" -T FILE Print stats to FILE. If FILE is -, print stats to stdout.\n"
, prog);
}
#ifndef WIN32
static X509_STORE *store;
/* Windows does not have regex... */
static int
ends_in_pem (const char *s)
{
int len;
len = strlen(s);
return len >= 4
&& 0 == strcasecmp(s + len - 4, ".pem");
}
static X509 *
file2cert (const char *path)
{
X509 *cert = NULL;
BIO *in;
in = BIO_new(BIO_s_file());
if (!in)
goto end;
if (BIO_read_filename(in, path) <= 0)
goto end;
cert = PEM_read_bio_X509_AUX(in, NULL, NULL, NULL);
end:
BIO_free(in);
return cert;
}
static int
init_x509_cert_store (const char *path)
{
struct dirent *ent;
X509 *cert;
DIR *dir;
char file_path[NAME_MAX];
dir = opendir(path);
if (!dir)
{
LSQ_WARN("Cannot open directory `%s': %s", path, strerror(errno));
return -1;
}
store = X509_STORE_new();
while ((ent = readdir(dir)))
{
if (ends_in_pem(ent->d_name))
{
snprintf(file_path, sizeof(file_path), "%s/%s", path, ent->d_name);
cert = file2cert(file_path);
if (cert)
{
if (1 != X509_STORE_add_cert(store, cert))
LSQ_WARN("could not add cert from %s", file_path);
}
else
LSQ_WARN("could not read cert from %s", file_path);
}
}
(void) closedir(dir);
return 0;
}
static int
verify_server_cert (void *ctx, STACK_OF(X509) *chain)
{
X509_STORE_CTX store_ctx;
X509 *cert;
int ver;
if (!store)
{
if (0 != init_x509_cert_store(ctx))
return -1;
}
cert = sk_X509_shift(chain);
X509_STORE_CTX_init(&store_ctx, store, cert, chain);
ver = X509_verify_cert(&store_ctx);
X509_STORE_CTX_cleanup(&store_ctx);
if (ver != 1)
LSQ_WARN("could not verify server certificate");
return ver == 1 ? 0 : -1;
}
#endif
static void *
hset_create (void *hsi_ctx, int is_push_promise)
{
struct hset *hset;
if (s_discard_response)
return (void *) 1;
else if ((hset = malloc(sizeof(*hset))))
{
STAILQ_INIT(hset);
return hset;
}
else
return NULL;
}
static enum lsquic_header_status
hset_add_header (void *hset_p, unsigned name_idx,
const char *name, unsigned name_len,
const char *value, unsigned value_len)
{
struct hset *hset = hset_p;
struct hset_elem *el;
if (name)
s_stat_downloaded_bytes += name_len + value_len + 4; /* ": \r\n" */
else
s_stat_downloaded_bytes += 2; /* \r\n "*/
if (s_discard_response)
return LSQUIC_HDR_OK;
if (!name) /* This signals end of headers. We do no post-processing. */
return LSQUIC_HDR_OK;
el = malloc(sizeof(*el));
if (!el)
return LSQUIC_HDR_ERR_NOMEM;
el->name = strndup(name, name_len);
el->value = strndup(value, value_len);
if (!(el->name && el->value))
{
free(el->name);
free(el->value);
free(el);
return LSQUIC_HDR_ERR_NOMEM;
}
el->name_idx = name_idx;
STAILQ_INSERT_TAIL(hset, el, next);
return LSQUIC_HDR_OK;
}
static void
hset_destroy (void *hset_p)
{
struct hset *hset = hset_p;
struct hset_elem *el, *next;
if (!s_discard_response)
{
for (el = STAILQ_FIRST(hset); el; el = next)
{
next = STAILQ_NEXT(el, next);
free(el->name);
free(el->value);
free(el);
}
free(hset);
}
}
static void
hset_dump (const struct hset *hset, FILE *out)
{
const struct hset_elem *el;
STAILQ_FOREACH(el, hset, next)
if (el->name_idx)
fprintf(out, "%s (static table idx %u): %s\n", el->name,
el->name_idx, el->value);
else
fprintf(out, "%s: %s\n", el->name, el->value);
fprintf(out, "\n");
fflush(out);
}
/* These are basic and for illustration purposes only. You will want to
* do your own verification by doing something similar to what is done
* in src/liblsquic/lsquic_http1x_if.c
*/
static const struct lsquic_hset_if header_bypass_api =
{
.hsi_create_header_set = hset_create,
.hsi_process_header = hset_add_header,
.hsi_discard_header_set = hset_destroy,
};
static void
display_stat (FILE *out, const struct sample_stats *stats, const char *name)
{
long double mean, stddev;
calc_sample_stats(stats, &mean, &stddev);
fprintf(out, "%s: n: %u; min: %.2Lf ms; max: %.2Lf ms; mean: %.2Lf ms; "
"sd: %.2Lf ms\n", name, stats->n, (long double) stats->min / 1000,
(long double) stats->max / 1000, mean / 1000, stddev / 1000);
}
int
main (int argc, char **argv)
{
int opt, s;
lsquic_time_t start_time;
FILE *stats_fh = NULL;
long double elapsed;
struct http_client_ctx client_ctx;
struct stat st;
struct path_elem *pe;
struct sport_head sports;
struct prog prog;
TAILQ_INIT(&sports);
memset(&client_ctx, 0, sizeof(client_ctx));
TAILQ_INIT(&client_ctx.hcc_path_elems);
TAILQ_INIT(&client_ctx.conn_ctxs);
client_ctx.method = "GET";
client_ctx.hcc_concurrency = 1;
client_ctx.hcc_cc_reqs_per_conn = 1;
client_ctx.hcc_reqs_per_conn = 1;
client_ctx.hcc_total_n_reqs = 1;
client_ctx.prog = &prog;
#ifdef WIN32
WSADATA wsd;
WSAStartup(MAKEWORD(2, 2), &wsd);
#endif
prog_init(&prog, LSENG_HTTP, &sports, &http_client_if, &client_ctx);
while (-1 != (opt = getopt(argc, argv, PROG_OPTS "46Br:R:IKu:EP:M:n:w:H:p:h"
#ifndef WIN32
"C:atT:"
#endif
)))
{
switch (opt) {
case 'a':
++s_display_cert_chain;
break;
case '4':
case '6':
prog.prog_ipver = opt - '0';
break;
case 'B':
g_header_bypass = 1;
prog.prog_api.ea_hsi_if = &header_bypass_api;
prog.prog_api.ea_hsi_ctx = NULL;
break;
case 'I':
client_ctx.hcc_flags |= HCC_ABORT_ON_INCOMPLETE;
break;
case 'K':
++s_discard_response;
break;
case 'u': /* Accept p<U>sh promise */
promise_fd = open(optarg, O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (promise_fd < 0)
{
perror("open");
exit(1);
}
prog.prog_settings.es_support_push = 1; /* Pokes into prog */
break;
case 'E': /* E: randomly reprioritize str<E>ams. Now, that's
* pretty random. :)
*/
randomly_reprioritize_streams = 1;
break;
case 'n':
client_ctx.hcc_concurrency = atoi(optarg);
break;
case 'w':
client_ctx.hcc_cc_reqs_per_conn = atoi(optarg);
break;
case 'P':
client_ctx.payload = optarg;
if (0 != stat(optarg, &st))
{
perror("stat");
exit(2);
}
sprintf(client_ctx.payload_size, "%jd", (intmax_t) st.st_size);
break;
case 'M':
client_ctx.method = optarg;
break;
case 'r':
client_ctx.hcc_total_n_reqs = atoi(optarg);
break;
case 'R':
client_ctx.hcc_reqs_per_conn = atoi(optarg);
break;
case 'H':
client_ctx.hostname = optarg;
prog.prog_hostname = optarg; /* Pokes into prog */
break;
case 'p':
pe = calloc(1, sizeof(*pe));
pe->path = optarg;
TAILQ_INSERT_TAIL(&client_ctx.hcc_path_elems, pe, next_pe);
break;
case 'h':
usage(argv[0]);
prog_print_common_options(&prog, stdout);
exit(0);
#ifndef WIN32
case 'C':
prog.prog_api.ea_verify_cert = verify_server_cert;
prog.prog_api.ea_verify_ctx = optarg;
break;
#endif
case 't':
stats_fh = stdout;
break;
case 'T':
if (0 == strcmp(optarg, "-"))
stats_fh = stdout;
else
{
stats_fh = fopen(optarg, "w");
if (!stats_fh)
{
perror("fopen");
exit(1);
}
}
break;
default:
if (0 != prog_set_opt(&prog, opt, optarg))
exit(1);
}
}
#if LSQUIC_CONN_STATS
prog.prog_api.ea_stats_fh = stats_fh;
#endif
if (TAILQ_EMPTY(&client_ctx.hcc_path_elems))
{
fprintf(stderr, "Specify at least one path using -p option\n");
exit(1);
}
start_time = lsquic_time_now();
if (0 != prog_prep(&prog))
{
LSQ_ERROR("could not prep");
exit(EXIT_FAILURE);
}
create_connections(&client_ctx);
LSQ_DEBUG("entering event loop");
s = prog_run(&prog);
if (stats_fh)
{
elapsed = (long double) (lsquic_time_now() - start_time) / 1000000;
fprintf(stats_fh, "overall statistics as calculated by %s:\n", argv[0]);
display_stat(stats_fh, &s_stat_to_conn, "time for connect");
display_stat(stats_fh, &s_stat_req, "time for request");
display_stat(stats_fh, &s_stat_ttfb, "time to 1st byte");
fprintf(stats_fh, "downloaded %lu application bytes in %.3Lf seconds\n",
s_stat_downloaded_bytes, elapsed);
fprintf(stats_fh, "%.2Lf reqs/sec; %.0Lf bytes/sec\n",
(long double) s_stat_req.n / elapsed,
(long double) s_stat_downloaded_bytes / elapsed);
}
prog_cleanup(&prog);
if (promise_fd >= 0)
(void) close(promise_fd);
while ((pe = TAILQ_FIRST(&client_ctx.hcc_path_elems)))
{
TAILQ_REMOVE(&client_ctx.hcc_path_elems, pe, next_pe);
free(pe);
}
exit(0 == s ? EXIT_SUCCESS : EXIT_FAILURE);
}
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