mirror of
https://gitea.invidious.io/iv-org/litespeed-quic.git
synced 2024-08-15 00:53:43 +00:00
- [BUGFIX] Q044: don't encode packet number in 6 bytes. Six-byte packet number encoding does not exist in Q044. This fixes a regression introduced in '[BUGFIX] Buffered packets can contain ACK frames' -- we need to keep QUIC version in mind when selecting the longest possible packet number encoding used for the buffered packet that carries the ACK. - [BUGFIX] Do not increase CWND when timeout occurs. - http_client: support setting handshake timeout on command line. Use -o handshake_to=timeout. - http_client: use -k to connect UDP socket to pick up ICMP errors. - http_client: allow pathless mode, when only handshake is performed without issuing any requests. This can be done by simply not specifying a -p flag on the command line.
464 lines
13 KiB
C
464 lines
13 KiB
C
/* Copyright (c) 2017 - 2019 LiteSpeed Technologies Inc. See LICENSE. */
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#include <assert.h>
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#ifndef WIN32
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <signal.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/queue.h>
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#ifndef WIN32
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#include <unistd.h>
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#else
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#include <getopt.h>
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#pragma warning(disable:4028)
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#endif// WIN32
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#include <event2/event.h>
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#include <lsquic.h>
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#include "../src/liblsquic/lsquic_hash.h"
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#include "../src/liblsquic/lsquic_logger.h"
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#include "test_config.h"
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#include "test_common.h"
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#include "prog.h"
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static int prog_stopped;
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static const struct lsquic_packout_mem_if pmi = {
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.pmi_allocate = pba_allocate,
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.pmi_release = pba_release,
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.pmi_return = pba_release,
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};
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void
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prog_init (struct prog *prog, unsigned flags,
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struct sport_head *sports,
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const struct lsquic_stream_if *stream_if, void *stream_if_ctx)
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{
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/* prog-specific initialization: */
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memset(prog, 0, sizeof(*prog));
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prog->prog_engine_flags = flags;
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prog->prog_sports = sports;
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lsquic_engine_init_settings(&prog->prog_settings, flags);
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prog->prog_api.ea_settings = &prog->prog_settings;
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prog->prog_api.ea_stream_if = stream_if;
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prog->prog_api.ea_stream_if_ctx = stream_if_ctx;
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prog->prog_api.ea_packets_out = sport_packets_out;
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prog->prog_api.ea_packets_out_ctx
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= prog;
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prog->prog_api.ea_pmi = &pmi;
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prog->prog_api.ea_pmi_ctx = &prog->prog_pba;
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/* Non prog-specific initialization: */
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lsquic_global_init(flags & LSENG_SERVER ? LSQUIC_GLOBAL_SERVER :
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LSQUIC_GLOBAL_CLIENT);
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lsquic_log_to_fstream(stderr, LLTS_HHMMSSMS);
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lsquic_logger_lopt("=notice");
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}
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static int
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prog_add_sport (struct prog *prog, const char *arg)
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{
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struct service_port *sport;
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sport = sport_new(arg, prog);
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if (!sport)
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return -1;
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/* Default settings: */
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sport->sp_flags = prog->prog_dummy_sport.sp_flags;
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sport->sp_sndbuf = prog->prog_dummy_sport.sp_sndbuf;
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sport->sp_rcvbuf = prog->prog_dummy_sport.sp_rcvbuf;
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TAILQ_INSERT_TAIL(prog->prog_sports, sport, next_sport);
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return 0;
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}
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void
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prog_print_common_options (const struct prog *prog, FILE *out)
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{
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fprintf(out,
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#if HAVE_REGEX
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" -s SERVER Server address. Takes on the form of host:port, host,\n"
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" or port. If host is not an IPv4 or IPv6 address, it is\n"
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" resolved. If host is not set, the value of SNI is\n"
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" used (see the -H flag). If port is not set, the default\n"
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" is 443.\n"
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#else
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" -s SERVER Server address. Takes on the form of host:port or host.\n"
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" If host is not an IPv4 or IPv6 address, it is resolved.\n"
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" If port is not set, the default is 443.\n"
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#endif
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" Examples:\n"
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" 127.0.0.1:12345\n"
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" ::1:443\n"
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" example.com\n"
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" example.com:8443\n"
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#if HAVE_REGEX
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" 8443\n"
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#endif
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" If -s is not specified, the value of SNI is used (see\n"
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" the -H flag).\n"
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#if LSQUIC_DONTFRAG_SUPPORTED
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" -D Set `do not fragment' flag on outgoing UDP packets\n"
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#endif
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" -z BYTES Maximum size of outgoing UDP packets. The default is 1370\n"
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" bytes for IPv4 socket and 1350 bytes for IPv6 socket\n"
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" -L LEVEL Log level for all modules. Possible values are `debug',\n"
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" `info', `notice', `warn', `error', `alert', `emerg',\n"
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" and `crit'.\n"
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" -l LEVELS Log levels for modules, e.g.\n"
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" -l event=info,engine=debug\n"
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" Can be specified more than once.\n"
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" -m MAX Maximum number of outgoing packet buffers that can be\n"
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" assigned at any one time. By default, there is no max.\n"
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" -y style Timestamp style used in log messages. The following styles\n"
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" are supported:\n"
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" 0 No timestamp\n"
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" 1 Millisecond time (this is the default).\n"
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" Example: 11:04:05.196\n"
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" 2 Full date and millisecond time.\n"
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" Example: 2017-03-21 13:43:46.671\n"
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" 3 Chrome-like timestamp: date/time.microseconds.\n"
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" Example: 1223/104613.946956\n"
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" 4 Microsecond time.\n"
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" Example: 11:04:05.196308\n"
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" 5 Full date and microsecond time.\n"
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" Example: 2017-03-21 13:43:46.671345\n"
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" -S opt=val Socket options. Supported options:\n"
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" sndbuf=12345 # Sets SO_SNDBUF\n"
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" rcvbuf=12345 # Sets SO_RCVBUF\n"
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);
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{
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if (prog->prog_engine_flags & LSENG_HTTP)
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fprintf(out,
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" -H host Value of `host' HTTP header. This is also used as SNI\n"
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" in Client Hello. This option is used to override the\n"
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" `host' part of the address specified using -s flag.\n"
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);
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else
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fprintf(out,
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" -H host Value of SNI in CHLO.\n"
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);
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}
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fprintf(out,
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" -k Connect UDP socket. Only meant to be used with clients\n"
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" to pick up ICMP errors.\n"
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" -i USECS Clock granularity in microseconds. Defaults to %u.\n",
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LSQUIC_DF_CLOCK_GRANULARITY
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);
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fprintf(out,
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" -h Print this help screen and exit\n"
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);
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}
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int
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prog_set_opt (struct prog *prog, int opt, const char *arg)
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{
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switch (opt)
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{
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#if LSQUIC_DONTFRAG_SUPPORTED
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case 'D':
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{
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struct service_port *sport = TAILQ_LAST(prog->prog_sports, sport_head);
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if (!sport)
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sport = &prog->prog_dummy_sport;
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sport->sp_flags |= SPORT_DONT_FRAGMENT;
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}
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return 0;
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#endif
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case 'm':
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prog->prog_packout_max = atoi(arg);
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return 0;
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case 'z':
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prog->prog_max_packet_size = atoi(arg);
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return 0;
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case 'H':
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if (prog->prog_engine_flags & LSENG_SERVER)
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return -1;
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prog->prog_hostname = arg;
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return 0;
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case 'y':
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lsquic_log_to_fstream(stderr, atoi(arg));
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return 0;
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case 'L':
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return lsquic_set_log_level(arg);
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case 'l':
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return lsquic_logger_lopt(arg);
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case 'o':
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return set_engine_option(&prog->prog_settings,
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&prog->prog_version_cleared, arg);
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case 'i':
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prog->prog_settings.es_clock_granularity = atoi(arg);
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return 0;
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case 's':
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if (0 == (prog->prog_engine_flags & LSENG_SERVER) &&
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!TAILQ_EMPTY(prog->prog_sports))
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return -1;
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return prog_add_sport(prog, arg);
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case 'S':
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{
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struct service_port *sport = TAILQ_LAST(prog->prog_sports, sport_head);
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if (!sport)
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sport = &prog->prog_dummy_sport;
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char *const name = strdup(optarg);
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char *val = strchr(name, '=');
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if (!val)
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{
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free(name);
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return -1;
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}
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*val = '\0';
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++val;
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if (0 == strcasecmp(name, "sndbuf"))
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{
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sport->sp_flags |= SPORT_SET_SNDBUF;
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sport->sp_sndbuf = atoi(val);
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free(name);
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return 0;
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}
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else if (0 == strcasecmp(name, "rcvbuf"))
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{
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sport->sp_flags |= SPORT_SET_RCVBUF;
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sport->sp_rcvbuf = atoi(val);
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free(name);
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return 0;
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}
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else
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{
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free(name);
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return -1;
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}
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}
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case 'k':
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{
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struct service_port *sport = TAILQ_LAST(prog->prog_sports, sport_head);
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if (!sport)
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sport = &prog->prog_dummy_sport;
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sport->sp_flags |= SPORT_CONNECT;
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}
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return 0;
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default:
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return 1;
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}
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}
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struct event_base *
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prog_eb (struct prog *prog)
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{
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return prog->prog_eb;
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}
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int
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prog_connect (struct prog *prog, unsigned char *zero_rtt, size_t zero_rtt_len)
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{
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struct service_port *sport;
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sport = TAILQ_FIRST(prog->prog_sports);
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if (NULL == lsquic_engine_connect(prog->prog_engine,
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(struct sockaddr *) &sport->sp_local_addr,
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(struct sockaddr *) &sport->sas, sport, NULL,
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prog->prog_hostname ? prog->prog_hostname : sport->host,
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prog->prog_max_packet_size, zero_rtt, zero_rtt_len))
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return -1;
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prog_process_conns(prog);
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return 0;
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}
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static int
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prog_init_client (struct prog *prog)
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{
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struct service_port *sport;
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sport = TAILQ_FIRST(prog->prog_sports);
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if (0 != sport_init_client(sport, prog->prog_engine, prog->prog_eb))
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return -1;
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return 0;
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}
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void
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prog_process_conns (struct prog *prog)
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{
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int diff;
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struct timeval timeout;
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lsquic_engine_process_conns(prog->prog_engine);
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if (lsquic_engine_earliest_adv_tick(prog->prog_engine, &diff))
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{
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if (diff < 0
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|| (unsigned) diff < prog->prog_settings.es_clock_granularity)
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{
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timeout.tv_sec = 0;
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timeout.tv_usec = prog->prog_settings.es_clock_granularity;
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}
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else
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{
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timeout.tv_sec = (unsigned) diff / 1000000;
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timeout.tv_usec = (unsigned) diff % 1000000;
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}
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if (!prog_is_stopped())
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event_add(prog->prog_timer, &timeout);
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}
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}
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static void
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prog_timer_handler (int fd, short what, void *arg)
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{
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struct prog *const prog = arg;
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if (!prog_is_stopped())
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prog_process_conns(prog);
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}
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static void
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prog_usr1_handler (int fd, short what, void *arg)
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{
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LSQ_NOTICE("Got SIGUSR1, stopping engine");
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prog_stop(arg);
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}
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int
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prog_run (struct prog *prog)
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{
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#ifndef WIN32
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prog->prog_usr1 = evsignal_new(prog->prog_eb, SIGUSR1,
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prog_usr1_handler, prog);
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evsignal_add(prog->prog_usr1, NULL);
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#endif
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event_base_loop(prog->prog_eb, 0);
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return 0;
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}
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void
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prog_cleanup (struct prog *prog)
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{
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lsquic_engine_destroy(prog->prog_engine);
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event_base_free(prog->prog_eb);
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pba_cleanup(&prog->prog_pba);
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lsquic_global_cleanup();
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}
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void
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prog_stop (struct prog *prog)
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{
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struct service_port *sport;
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prog_stopped = 1;
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while ((sport = TAILQ_FIRST(prog->prog_sports)))
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{
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TAILQ_REMOVE(prog->prog_sports, sport, next_sport);
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sport_destroy(sport);
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}
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if (prog->prog_timer)
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{
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event_del(prog->prog_timer);
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event_free(prog->prog_timer);
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prog->prog_timer = NULL;
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}
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if (prog->prog_usr1)
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{
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event_del(prog->prog_usr1);
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event_free(prog->prog_usr1);
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prog->prog_usr1 = NULL;
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}
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}
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int
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prog_prep (struct prog *prog)
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{
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int s;
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char err_buf[100];
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if (0 != lsquic_engine_check_settings(prog->prog_api.ea_settings,
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prog->prog_engine_flags, err_buf, sizeof(err_buf)))
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{
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LSQ_ERROR("Error in settings: %s", err_buf);
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return -1;
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}
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pba_init(&prog->prog_pba, prog->prog_packout_max);
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if (TAILQ_EMPTY(prog->prog_sports))
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{
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if (!prog->prog_hostname)
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return -1;
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s = prog_add_sport(prog, prog->prog_hostname);
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if (0 != s)
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return -1;
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}
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prog->prog_eb = event_base_new();
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prog->prog_engine = lsquic_engine_new(prog->prog_engine_flags,
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&prog->prog_api);
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if (!prog->prog_engine)
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return -1;
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prog->prog_timer = event_new(prog->prog_eb, -1, 0,
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prog_timer_handler, prog);
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s = prog_init_client(prog);
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if (s != 0)
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return -1;
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return 0;
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}
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int
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prog_is_stopped (void)
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{
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return prog_stopped != 0;
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}
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static void
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send_unsent (evutil_socket_t fd, short what, void *arg)
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{
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struct prog *const prog = arg;
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assert(prog->prog_send);
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event_del(prog->prog_send);
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event_free(prog->prog_send);
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prog->prog_send = NULL;
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LSQ_DEBUG("on_write event fires");
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lsquic_engine_send_unsent_packets(prog->prog_engine);
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}
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void
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prog_sport_cant_send (struct prog *prog, int fd)
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{
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assert(!prog->prog_send);
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LSQ_DEBUG("cannot send: register on_write event");
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prog->prog_send = event_new(prog->prog_eb, fd, EV_WRITE, send_unsent, prog);
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event_add(prog->prog_send, NULL);
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}
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