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nghttp2/src/nghttp.cc

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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2013 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "nghttp.h"
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif // HAVE_UNISTD_H
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif // HAVE_FCNTL_H
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif // HAVE_NETINET_IN_H
#include <netinet/tcp.h>
#include <getopt.h>
#include <cassert>
#include <cstdio>
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <tuple>
#include <openssl/err.h>
#ifdef HAVE_JANSSON
# include <jansson.h>
#endif // HAVE_JANSSON
#include "app_helper.h"
#include "HtmlParser.h"
#include "util.h"
#include "base64.h"
#include "tls.h"
#include "template.h"
#include "ssl_compat.h"
#ifndef O_BINARY
# define O_BINARY (0)
#endif // O_BINARY
namespace nghttp2 {
// The anchor stream nodes when --no-dep is not used. The stream ID =
// 1 is excluded since it is used as first stream in upgrade case. We
// follows the same dependency anchor nodes as Firefox does.
struct Anchor {
int32_t stream_id;
// stream ID this anchor depends on
int32_t dep_stream_id;
// .. with this weight.
int32_t weight;
};
// This is index into anchors. Firefox uses ANCHOR_FOLLOWERS for html
// file.
enum {
ANCHOR_LEADERS,
ANCHOR_UNBLOCKED,
ANCHOR_BACKGROUND,
ANCHOR_SPECULATIVE,
ANCHOR_FOLLOWERS,
};
namespace {
constexpr auto anchors = std::array<Anchor, 5>{{
{3, 0, 201},
{5, 0, 101},
{7, 0, 1},
{9, 7, 1},
{11, 3, 1},
}};
} // namespace
Config::Config()
: header_table_size(-1),
min_header_table_size(std::numeric_limits<uint32_t>::max()),
encoder_header_table_size(-1),
padding(0),
max_concurrent_streams(100),
peer_max_concurrent_streams(100),
multiply(1),
timeout(0.),
window_bits(-1),
connection_window_bits(-1),
verbose(0),
port_override(0),
null_out(false),
remote_name(false),
get_assets(false),
stat(false),
upgrade(false),
continuation(false),
no_content_length(false),
no_dep(false),
hexdump(false),
no_push(false),
expect_continue(false),
verify_peer(true) {
nghttp2_option_new(&http2_option);
nghttp2_option_set_peer_max_concurrent_streams(http2_option,
peer_max_concurrent_streams);
nghttp2_option_set_builtin_recv_extension_type(http2_option, NGHTTP2_ALTSVC);
nghttp2_option_set_builtin_recv_extension_type(http2_option, NGHTTP2_ORIGIN);
}
Config::~Config() { nghttp2_option_del(http2_option); }
namespace {
Config config;
} // namespace
namespace {
void print_protocol_nego_error() {
std::cerr << "[ERROR] HTTP/2 protocol was not selected."
<< " (nghttp2 expects " << NGHTTP2_PROTO_VERSION_ID << ")"
<< std::endl;
}
} // namespace
namespace {
std::string strip_fragment(const char *raw_uri) {
const char *end;
for (end = raw_uri; *end && *end != '#'; ++end)
;
size_t len = end - raw_uri;
return std::string(raw_uri, len);
}
} // namespace
Request::Request(const std::string &uri, const http_parser_url &u,
const nghttp2_data_provider *data_prd, int64_t data_length,
const nghttp2_priority_spec &pri_spec, int level)
: uri(uri),
u(u),
pri_spec(pri_spec),
data_length(data_length),
data_offset(0),
response_len(0),
inflater(nullptr),
data_prd(data_prd),
header_buffer_size(0),
stream_id(-1),
status(0),
level(level),
expect_final_response(false) {
http2::init_hdidx(res_hdidx);
http2::init_hdidx(req_hdidx);
}
Request::~Request() { nghttp2_gzip_inflate_del(inflater); }
void Request::init_inflater() {
int rv;
// This is required with --disable-assert.
(void)rv;
rv = nghttp2_gzip_inflate_new(&inflater);
assert(rv == 0);
}
StringRef Request::get_real_scheme() const {
return config.scheme_override.empty()
? util::get_uri_field(uri.c_str(), u, UF_SCHEMA)
: StringRef{config.scheme_override};
}
StringRef Request::get_real_host() const {
return config.host_override.empty()
? util::get_uri_field(uri.c_str(), u, UF_HOST)
: StringRef{config.host_override};
}
uint16_t Request::get_real_port() const {
auto scheme = get_real_scheme();
return config.host_override.empty()
? util::has_uri_field(u, UF_PORT) ? u.port
: scheme == "https" ? 443 : 80
: config.port_override == 0 ? scheme == "https" ? 443 : 80
: config.port_override;
}
void Request::init_html_parser() {
// We crawl HTML using overridden scheme, host, and port.
auto scheme = get_real_scheme();
auto host = get_real_host();
auto port = get_real_port();
auto ipv6_lit =
std::find(std::begin(host), std::end(host), ':') != std::end(host);
auto base_uri = scheme.str();
base_uri += "://";
if (ipv6_lit) {
base_uri += '[';
}
base_uri += host;
if (ipv6_lit) {
base_uri += ']';
}
if (!((scheme == "https" && port == 443) ||
(scheme == "http" && port == 80))) {
base_uri += ':';
base_uri += util::utos(port);
}
base_uri += util::get_uri_field(uri.c_str(), u, UF_PATH);
if (util::has_uri_field(u, UF_QUERY)) {
base_uri += '?';
base_uri += util::get_uri_field(uri.c_str(), u, UF_QUERY);
}
html_parser = std::make_unique<HtmlParser>(base_uri);
}
int Request::update_html_parser(const uint8_t *data, size_t len, int fin) {
if (!html_parser) {
return 0;
}
return html_parser->parse_chunk(reinterpret_cast<const char *>(data), len,
fin);
}
std::string Request::make_reqpath() const {
std::string path = util::has_uri_field(u, UF_PATH)
? util::get_uri_field(uri.c_str(), u, UF_PATH).str()
: "/";
if (util::has_uri_field(u, UF_QUERY)) {
path += '?';
path.append(uri.c_str() + u.field_data[UF_QUERY].off,
u.field_data[UF_QUERY].len);
}
return path;
}
namespace {
// Perform special handling |host| if it is IPv6 literal and includes
// zone ID per RFC 6874.
std::string decode_host(const StringRef &host) {
auto zone_start = std::find(std::begin(host), std::end(host), '%');
if (zone_start == std::end(host) ||
!util::ipv6_numeric_addr(
std::string(std::begin(host), zone_start).c_str())) {
return host.str();
}
// case: ::1%
if (zone_start + 1 == std::end(host)) {
return StringRef{host.c_str(), host.size() - 1}.str();
}
// case: ::1%12 or ::1%1
if (zone_start + 3 >= std::end(host)) {
return host.str();
}
// If we see "%25", followed by more characters, then decode %25 as
// '%'.
auto zone_id_src = (*(zone_start + 1) == '2' && *(zone_start + 2) == '5')
? zone_start + 3
: zone_start + 1;
auto zone_id = util::percent_decode(zone_id_src, std::end(host));
auto res = std::string(std::begin(host), zone_start + 1);
res += zone_id;
return res;
}
} // namespace
namespace {
nghttp2_priority_spec resolve_dep(int res_type) {
nghttp2_priority_spec pri_spec;
if (config.no_dep) {
nghttp2_priority_spec_default_init(&pri_spec);
return pri_spec;
}
int32_t anchor_id;
int32_t weight;
switch (res_type) {
case REQ_CSS:
case REQ_JS:
anchor_id = anchors[ANCHOR_LEADERS].stream_id;
weight = 32;
break;
case REQ_UNBLOCK_JS:
anchor_id = anchors[ANCHOR_UNBLOCKED].stream_id;
weight = 32;
break;
case REQ_IMG:
anchor_id = anchors[ANCHOR_FOLLOWERS].stream_id;
weight = 12;
break;
default:
anchor_id = anchors[ANCHOR_FOLLOWERS].stream_id;
weight = 32;
}
nghttp2_priority_spec_init(&pri_spec, anchor_id, weight, 0);
return pri_spec;
}
} // namespace
bool Request::is_ipv6_literal_addr() const {
if (util::has_uri_field(u, UF_HOST)) {
return memchr(uri.c_str() + u.field_data[UF_HOST].off, ':',
u.field_data[UF_HOST].len);
} else {
return false;
}
}
Headers::value_type *Request::get_res_header(int32_t token) {
auto idx = res_hdidx[token];
if (idx == -1) {
return nullptr;
}
return &res_nva[idx];
}
Headers::value_type *Request::get_req_header(int32_t token) {
auto idx = req_hdidx[token];
if (idx == -1) {
return nullptr;
}
return &req_nva[idx];
}
void Request::record_request_start_time() {
timing.state = RequestState::ON_REQUEST;
timing.request_start_time = get_time();
}
void Request::record_response_start_time() {
timing.state = RequestState::ON_RESPONSE;
timing.response_start_time = get_time();
}
void Request::record_response_end_time() {
timing.state = RequestState::ON_COMPLETE;
timing.response_end_time = get_time();
}
namespace {
void continue_timeout_cb(struct ev_loop *loop, ev_timer *w, int revents) {
auto client = static_cast<HttpClient *>(ev_userdata(loop));
auto req = static_cast<Request *>(w->data);
int error;
error = nghttp2_submit_data(client->session, NGHTTP2_FLAG_END_STREAM,
req->stream_id, req->data_prd);
if (error) {
std::cerr << "[ERROR] nghttp2_submit_data() returned error: "
<< nghttp2_strerror(error) << std::endl;
nghttp2_submit_rst_stream(client->session, NGHTTP2_FLAG_NONE,
req->stream_id, NGHTTP2_INTERNAL_ERROR);
}
client->signal_write();
}
} // namespace
ContinueTimer::ContinueTimer(struct ev_loop *loop, Request *req) : loop(loop) {
ev_timer_init(&timer, continue_timeout_cb, 1., 0.);
timer.data = req;
}
ContinueTimer::~ContinueTimer() { stop(); }
void ContinueTimer::start() { ev_timer_start(loop, &timer); }
void ContinueTimer::stop() { ev_timer_stop(loop, &timer); }
void ContinueTimer::dispatch_continue() {
// Only dispatch the timeout callback if it hasn't already been called.
if (ev_is_active(&timer)) {
ev_feed_event(loop, &timer, 0);
}
}
namespace {
int htp_msg_begincb(http_parser *htp) {
if (config.verbose) {
print_timer();
std::cout << " HTTP Upgrade response" << std::endl;
}
return 0;
}
} // namespace
namespace {
int htp_msg_completecb(http_parser *htp) {
auto client = static_cast<HttpClient *>(htp->data);
client->upgrade_response_status_code = htp->status_code;
client->upgrade_response_complete = true;
return 0;
}
} // namespace
namespace {
constexpr http_parser_settings htp_hooks = {
htp_msg_begincb, // http_cb on_message_begin;
nullptr, // http_data_cb on_url;
nullptr, // http_data_cb on_status;
nullptr, // http_data_cb on_header_field;
nullptr, // http_data_cb on_header_value;
nullptr, // http_cb on_headers_complete;
nullptr, // http_data_cb on_body;
htp_msg_completecb // http_cb on_message_complete;
};
} // namespace
namespace {
int submit_request(HttpClient *client, const Headers &headers, Request *req) {
auto path = req->make_reqpath();
auto scheme = util::get_uri_field(req->uri.c_str(), req->u, UF_SCHEMA);
auto build_headers = Headers{{":method", req->data_prd ? "POST" : "GET"},
{":path", path},
{":scheme", scheme.str()},
{":authority", client->hostport},
{"accept", "*/*"},
{"accept-encoding", "gzip, deflate"},
{"user-agent", "nghttp2/" NGHTTP2_VERSION}};
bool expect_continue = false;
if (config.continuation) {
for (size_t i = 0; i < 6; ++i) {
build_headers.emplace_back("continuation-test-" + util::utos(i + 1),
std::string(4_k, '-'));
}
}
auto num_initial_headers = build_headers.size();
if (req->data_prd) {
if (!config.no_content_length) {
build_headers.emplace_back("content-length",
util::utos(req->data_length));
}
if (config.expect_continue) {
expect_continue = true;
build_headers.emplace_back("expect", "100-continue");
}
}
for (auto &kv : headers) {
size_t i;
for (i = 0; i < num_initial_headers; ++i) {
if (kv.name == build_headers[i].name) {
build_headers[i].value = kv.value;
break;
}
}
if (i < num_initial_headers) {
continue;
}
build_headers.emplace_back(kv.name, kv.value, kv.no_index);
}
auto nva = std::vector<nghttp2_nv>();
nva.reserve(build_headers.size());
for (auto &kv : build_headers) {
nva.push_back(http2::make_nv(kv.name, kv.value, kv.no_index));
}
auto method = http2::get_header(build_headers, ":method");
assert(method);
req->method = method->value;
std::string trailer_names;
if (!config.trailer.empty()) {
trailer_names = config.trailer[0].name;
for (size_t i = 1; i < config.trailer.size(); ++i) {
trailer_names += ", ";
trailer_names += config.trailer[i].name;
}
nva.push_back(http2::make_nv_ls("trailer", trailer_names));
}
int32_t stream_id;
if (expect_continue) {
stream_id = nghttp2_submit_headers(client->session, 0, -1, &req->pri_spec,
nva.data(), nva.size(), req);
} else {
stream_id =
nghttp2_submit_request(client->session, &req->pri_spec, nva.data(),
nva.size(), req->data_prd, req);
}
if (stream_id < 0) {
std::cerr << "[ERROR] nghttp2_submit_"
<< (expect_continue ? "headers" : "request")
<< "() returned error: " << nghttp2_strerror(stream_id)
<< std::endl;
return -1;
}
req->stream_id = stream_id;
client->request_done(req);
req->req_nva = std::move(build_headers);
if (expect_continue) {
auto timer = std::make_unique<ContinueTimer>(client->loop, req);
req->continue_timer = std::move(timer);
}
return 0;
}
} // namespace
namespace {
void readcb(struct ev_loop *loop, ev_io *w, int revents) {
auto client = static_cast<HttpClient *>(w->data);
if (client->do_read() != 0) {
client->disconnect();
}
}
} // namespace
namespace {
void writecb(struct ev_loop *loop, ev_io *w, int revents) {
auto client = static_cast<HttpClient *>(w->data);
auto rv = client->do_write();
if (rv == HttpClient::ERR_CONNECT_FAIL) {
client->connect_fail();
return;
}
if (rv != 0) {
client->disconnect();
}
}
} // namespace
namespace {
void timeoutcb(struct ev_loop *loop, ev_timer *w, int revents) {
auto client = static_cast<HttpClient *>(w->data);
std::cerr << "[ERROR] Timeout" << std::endl;
client->disconnect();
}
} // namespace
namespace {
void settings_timeout_cb(struct ev_loop *loop, ev_timer *w, int revents) {
auto client = static_cast<HttpClient *>(w->data);
ev_timer_stop(loop, w);
nghttp2_session_terminate_session(client->session, NGHTTP2_SETTINGS_TIMEOUT);
client->signal_write();
}
} // namespace
HttpClient::HttpClient(const nghttp2_session_callbacks *callbacks,
struct ev_loop *loop, SSL_CTX *ssl_ctx)
: wb(&mcpool),
session(nullptr),
callbacks(callbacks),
loop(loop),
ssl_ctx(ssl_ctx),
ssl(nullptr),
addrs(nullptr),
next_addr(nullptr),
cur_addr(nullptr),
complete(0),
success(0),
settings_payloadlen(0),
state(ClientState::IDLE),
upgrade_response_status_code(0),
fd(-1),
upgrade_response_complete(false) {
ev_io_init(&wev, writecb, 0, EV_WRITE);
ev_io_init(&rev, readcb, 0, EV_READ);
wev.data = this;
rev.data = this;
ev_timer_init(&wt, timeoutcb, 0., config.timeout);
ev_timer_init(&rt, timeoutcb, 0., config.timeout);
wt.data = this;
rt.data = this;
ev_timer_init(&settings_timer, settings_timeout_cb, 0., 10.);
settings_timer.data = this;
}
HttpClient::~HttpClient() {
disconnect();
if (addrs) {
freeaddrinfo(addrs);
addrs = nullptr;
next_addr = nullptr;
}
}
bool HttpClient::need_upgrade() const {
return config.upgrade && scheme == "http";
}
int HttpClient::resolve_host(const std::string &host, uint16_t port) {
int rv;
this->host = host;
addrinfo hints{};
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
hints.ai_flags = AI_ADDRCONFIG;
rv = getaddrinfo(host.c_str(), util::utos(port).c_str(), &hints, &addrs);
if (rv != 0) {
std::cerr << "[ERROR] getaddrinfo() failed: " << gai_strerror(rv)
<< std::endl;
return -1;
}
if (addrs == nullptr) {
std::cerr << "[ERROR] No address returned" << std::endl;
return -1;
}
next_addr = addrs;
return 0;
}
namespace {
// Just returns 1 to continue handshake.
int verify_cb(int preverify_ok, X509_STORE_CTX *ctx) { return 1; }
} // namespace
int HttpClient::initiate_connection() {
int rv;
cur_addr = nullptr;
while (next_addr) {
cur_addr = next_addr;
next_addr = next_addr->ai_next;
fd = util::create_nonblock_socket(cur_addr->ai_family);
if (fd == -1) {
continue;
}
if (ssl_ctx) {
// We are establishing TLS connection.
ssl = SSL_new(ssl_ctx);
if (!ssl) {
std::cerr << "[ERROR] SSL_new() failed: "
<< ERR_error_string(ERR_get_error(), nullptr) << std::endl;
return -1;
}
SSL_set_fd(ssl, fd);
SSL_set_connect_state(ssl);
// If the user overrode the :authority or host header, use that
// value for the SNI extension
const auto &host_string =
config.host_override.empty() ? host : config.host_override;
#if LIBRESSL_2_7_API || \
(!LIBRESSL_IN_USE && OPENSSL_VERSION_NUMBER >= 0x10002000L) || \
defined(OPENSSL_IS_BORINGSSL)
auto param = SSL_get0_param(ssl);
X509_VERIFY_PARAM_set_hostflags(param, 0);
X509_VERIFY_PARAM_set1_host(param, host_string.c_str(),
host_string.size());
#endif // LIBRESSL_2_7_API || (!LIBRESSL_IN_USE &&
// OPENSSL_VERSION_NUMBER >= 0x10002000L) ||
// defined(OPENSSL_IS_BORINGSSL)
SSL_set_verify(ssl, SSL_VERIFY_PEER, verify_cb);
if (!util::numeric_host(host_string.c_str())) {
SSL_set_tlsext_host_name(ssl, host_string.c_str());
}
}
rv = connect(fd, cur_addr->ai_addr, cur_addr->ai_addrlen);
if (rv != 0 && errno != EINPROGRESS) {
if (ssl) {
SSL_free(ssl);
ssl = nullptr;
}
close(fd);
fd = -1;
continue;
}
break;
}
if (fd == -1) {
return -1;
}
writefn = &HttpClient::connected;
if (need_upgrade()) {
on_readfn = &HttpClient::on_upgrade_read;
on_writefn = &HttpClient::on_upgrade_connect;
} else {
on_readfn = &HttpClient::on_read;
on_writefn = &HttpClient::on_write;
}
ev_io_set(&rev, fd, EV_READ);
ev_io_set(&wev, fd, EV_WRITE);
ev_io_start(loop, &wev);
ev_timer_again(loop, &wt);
return 0;
}
void HttpClient::disconnect() {
state = ClientState::IDLE;
for (auto req = std::begin(reqvec); req != std::end(reqvec); ++req) {
if ((*req)->continue_timer) {
(*req)->continue_timer->stop();
}
}
ev_timer_stop(loop, &settings_timer);
ev_timer_stop(loop, &rt);
ev_timer_stop(loop, &wt);
ev_io_stop(loop, &rev);
ev_io_stop(loop, &wev);
nghttp2_session_del(session);
session = nullptr;
if (ssl) {
SSL_set_shutdown(ssl, SSL_get_shutdown(ssl) | SSL_RECEIVED_SHUTDOWN);
ERR_clear_error();
SSL_shutdown(ssl);
SSL_free(ssl);
ssl = nullptr;
}
if (fd != -1) {
shutdown(fd, SHUT_WR);
close(fd);
fd = -1;
}
}
int HttpClient::read_clear() {
ev_timer_again(loop, &rt);
std::array<uint8_t, 8_k> buf;
for (;;) {
ssize_t nread;
while ((nread = read(fd, buf.data(), buf.size())) == -1 && errno == EINTR)
;
if (nread == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
return 0;
}
return -1;
}
if (nread == 0) {
return -1;
}
if (on_readfn(*this, buf.data(), nread) != 0) {
return -1;
}
}
return 0;
}
int HttpClient::write_clear() {
ev_timer_again(loop, &rt);
std::array<struct iovec, 2> iov;
for (;;) {
if (on_writefn(*this) != 0) {
return -1;
}
auto iovcnt = wb.riovec(iov.data(), iov.size());
if (iovcnt == 0) {
break;
}
ssize_t nwrite;
while ((nwrite = writev(fd, iov.data(), iovcnt)) == -1 && errno == EINTR)
;
if (nwrite == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
ev_io_start(loop, &wev);
ev_timer_again(loop, &wt);
return 0;
}
return -1;
}
wb.drain(nwrite);
}
ev_io_stop(loop, &wev);
ev_timer_stop(loop, &wt);
return 0;
}
int HttpClient::noop() { return 0; }
void HttpClient::connect_fail() {
if (state == ClientState::IDLE) {
std::cerr << "[ERROR] Could not connect to the address "
<< util::numeric_name(cur_addr->ai_addr, cur_addr->ai_addrlen)
<< std::endl;
}
auto cur_state = state;
disconnect();
if (cur_state == ClientState::IDLE) {
if (initiate_connection() == 0) {
std::cerr << "Trying next address "
<< util::numeric_name(cur_addr->ai_addr, cur_addr->ai_addrlen)
<< std::endl;
}
}
}
int HttpClient::connected() {
if (!util::check_socket_connected(fd)) {
return ERR_CONNECT_FAIL;
}
if (config.verbose) {
print_timer();
std::cout << " Connected" << std::endl;
}
state = ClientState::CONNECTED;
ev_io_start(loop, &rev);
ev_io_stop(loop, &wev);
ev_timer_again(loop, &rt);
ev_timer_stop(loop, &wt);
if (ssl) {
readfn = &HttpClient::tls_handshake;
writefn = &HttpClient::tls_handshake;
return do_write();
}
readfn = &HttpClient::read_clear;
writefn = &HttpClient::write_clear;
if (need_upgrade()) {
htp = std::make_unique<http_parser>();
http_parser_init(htp.get(), HTTP_RESPONSE);
htp->data = this;
return do_write();
}
if (connection_made() != 0) {
return -1;
}
return 0;
}
namespace {
size_t populate_settings(nghttp2_settings_entry *iv) {
size_t niv = 2;
iv[0].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
iv[0].value = config.max_concurrent_streams;
iv[1].settings_id = NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
if (config.window_bits != -1) {
iv[1].value = (1 << config.window_bits) - 1;
} else {
iv[1].value = NGHTTP2_INITIAL_WINDOW_SIZE;
}
if (config.header_table_size >= 0) {
if (config.min_header_table_size < config.header_table_size) {
iv[niv].settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
iv[niv].value = config.min_header_table_size;
++niv;
}
iv[niv].settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
iv[niv].value = config.header_table_size;
++niv;
}
if (config.no_push) {
iv[niv].settings_id = NGHTTP2_SETTINGS_ENABLE_PUSH;
iv[niv].value = 0;
++niv;
}
return niv;
}
} // namespace
int HttpClient::on_upgrade_connect() {
ssize_t rv;
record_connect_end_time();
assert(!reqvec.empty());
std::array<nghttp2_settings_entry, 16> iv;
size_t niv = populate_settings(iv.data());
assert(settings_payload.size() >= 8 * niv);
rv = nghttp2_pack_settings_payload(settings_payload.data(),
settings_payload.size(), iv.data(), niv);
if (rv < 0) {
return -1;
}
settings_payloadlen = rv;
auto token68 =
base64::encode(std::begin(settings_payload),
std::begin(settings_payload) + settings_payloadlen);
util::to_token68(token68);
std::string req;
if (reqvec[0]->data_prd) {
// If the request contains upload data, use OPTIONS * to upgrade
req = "OPTIONS *";
} else {
auto meth = std::find_if(
std::begin(config.headers), std::end(config.headers),
[](const Header &kv) { return util::streq_l(":method", kv.name); });
if (meth == std::end(config.headers)) {
req = "GET ";
reqvec[0]->method = "GET";
} else {
req = (*meth).value;
req += ' ';
reqvec[0]->method = (*meth).value;
}
req += reqvec[0]->make_reqpath();
}
auto headers = Headers{{"host", hostport},
{"connection", "Upgrade, HTTP2-Settings"},
{"upgrade", NGHTTP2_CLEARTEXT_PROTO_VERSION_ID},
{"http2-settings", token68},
{"accept", "*/*"},
{"user-agent", "nghttp2/" NGHTTP2_VERSION}};
auto initial_headerslen = headers.size();
for (auto &kv : config.headers) {
size_t i;
if (kv.name.empty() || kv.name[0] == ':') {
continue;
}
for (i = 0; i < initial_headerslen; ++i) {
if (kv.name == headers[i].name) {
headers[i].value = kv.value;
break;
}
}
if (i < initial_headerslen) {
continue;
}
headers.emplace_back(kv.name, kv.value, kv.no_index);
}
req += " HTTP/1.1\r\n";
for (auto &kv : headers) {
req += kv.name;
req += ": ";
req += kv.value;
req += "\r\n";
}
req += "\r\n";
wb.append(req);
if (config.verbose) {
print_timer();
std::cout << " HTTP Upgrade request\n" << req << std::endl;
}
if (!reqvec[0]->data_prd) {
// record request time if this is a part of real request.
reqvec[0]->record_request_start_time();
reqvec[0]->req_nva = std::move(headers);
}
on_writefn = &HttpClient::noop;
signal_write();
return 0;
}
int HttpClient::on_upgrade_read(const uint8_t *data, size_t len) {
int rv;
auto nread = http_parser_execute(htp.get(), &htp_hooks,
reinterpret_cast<const char *>(data), len);
if (config.verbose) {
std::cout.write(reinterpret_cast<const char *>(data), nread);
}
auto htperr = HTTP_PARSER_ERRNO(htp.get());
if (htperr != HPE_OK) {
std::cerr << "[ERROR] Failed to parse HTTP Upgrade response header: "
<< "(" << http_errno_name(htperr) << ") "
<< http_errno_description(htperr) << std::endl;
return -1;
}
if (!upgrade_response_complete) {
return 0;
}
if (config.verbose) {
std::cout << std::endl;
}
if (upgrade_response_status_code != 101) {
std::cerr << "[ERROR] HTTP Upgrade failed" << std::endl;
return -1;
}
if (config.verbose) {
print_timer();
std::cout << " HTTP Upgrade success" << std::endl;
}
on_readfn = &HttpClient::on_read;
on_writefn = &HttpClient::on_write;
rv = connection_made();
if (rv != 0) {
return rv;
}
// Read remaining data in the buffer because it is not notified
// callback anymore.
rv = on_readfn(*this, data + nread, len - nread);
if (rv != 0) {
return rv;
}
return 0;
}
int HttpClient::do_read() { return readfn(*this); }
int HttpClient::do_write() { return writefn(*this); }
int HttpClient::connection_made() {
int rv;
if (!need_upgrade()) {
record_connect_end_time();
}
if (ssl) {
// Check NPN or ALPN result
const unsigned char *next_proto = nullptr;
unsigned int next_proto_len;
#ifndef OPENSSL_NO_NEXTPROTONEG
SSL_get0_next_proto_negotiated(ssl, &next_proto, &next_proto_len);
#endif // !OPENSSL_NO_NEXTPROTONEG
for (int i = 0; i < 2; ++i) {
if (next_proto) {
auto proto = StringRef{next_proto, next_proto_len};
if (config.verbose) {
std::cout << "The negotiated protocol: " << proto << std::endl;
}
if (!util::check_h2_is_selected(proto)) {
next_proto = nullptr;
}
break;
}
#if OPENSSL_VERSION_NUMBER >= 0x10002000L
SSL_get0_alpn_selected(ssl, &next_proto, &next_proto_len);
#else // OPENSSL_VERSION_NUMBER < 0x10002000L
break;
#endif // OPENSSL_VERSION_NUMBER < 0x10002000L
}
if (!next_proto) {
print_protocol_nego_error();
return -1;
}
}
rv = nghttp2_session_client_new2(&session, callbacks, this,
config.http2_option);
if (rv != 0) {
return -1;
}
if (need_upgrade()) {
// Adjust stream user-data depending on the existence of upload
// data
Request *stream_user_data = nullptr;
if (!reqvec[0]->data_prd) {
stream_user_data = reqvec[0].get();
}
// If HEAD is used, that is only when user specified it with -H
// option.
auto head_request = stream_user_data && stream_user_data->method == "HEAD";
rv = nghttp2_session_upgrade2(session, settings_payload.data(),
settings_payloadlen, head_request,
stream_user_data);
if (rv != 0) {
std::cerr << "[ERROR] nghttp2_session_upgrade() returned error: "
<< nghttp2_strerror(rv) << std::endl;
return -1;
}
if (stream_user_data) {
stream_user_data->stream_id = 1;
request_done(stream_user_data);
}
}
// If upgrade succeeds, the SETTINGS value sent with
// HTTP2-Settings header field has already been submitted to
// session object.
if (!need_upgrade()) {
std::array<nghttp2_settings_entry, 16> iv;
auto niv = populate_settings(iv.data());
rv = nghttp2_submit_settings(session, NGHTTP2_FLAG_NONE, iv.data(), niv);
if (rv != 0) {
return -1;
}
}
if (!config.no_dep) {
// Create anchor stream nodes
nghttp2_priority_spec pri_spec;
for (auto &anchor : anchors) {
nghttp2_priority_spec_init(&pri_spec, anchor.dep_stream_id, anchor.weight,
0);
rv = nghttp2_submit_priority(session, NGHTTP2_FLAG_NONE, anchor.stream_id,
&pri_spec);
if (rv != 0) {
return -1;
}
}
rv = nghttp2_session_set_next_stream_id(
session, anchors[ANCHOR_FOLLOWERS].stream_id + 2);
if (rv != 0) {
return -1;
}
if (need_upgrade() && !reqvec[0]->data_prd) {
// Amend the priority because we cannot send priority in
// HTTP/1.1 Upgrade.
auto &anchor = anchors[ANCHOR_FOLLOWERS];
nghttp2_priority_spec_init(&pri_spec, anchor.stream_id,
reqvec[0]->pri_spec.weight, 0);
rv = nghttp2_submit_priority(session, NGHTTP2_FLAG_NONE, 1, &pri_spec);
if (rv != 0) {
return -1;
}
}
} else if (need_upgrade() && !reqvec[0]->data_prd &&
reqvec[0]->pri_spec.weight != NGHTTP2_DEFAULT_WEIGHT) {
// Amend the priority because we cannot send priority in HTTP/1.1
// Upgrade.
nghttp2_priority_spec pri_spec;
nghttp2_priority_spec_init(&pri_spec, 0, reqvec[0]->pri_spec.weight, 0);
rv = nghttp2_submit_priority(session, NGHTTP2_FLAG_NONE, 1, &pri_spec);
if (rv != 0) {
return -1;
}
}
ev_timer_again(loop, &settings_timer);
if (config.connection_window_bits != -1) {
int32_t window_size = (1 << config.connection_window_bits) - 1;
rv = nghttp2_session_set_local_window_size(session, NGHTTP2_FLAG_NONE, 0,
window_size);
if (rv != 0) {
return -1;
}
}
// Adjust first request depending on the existence of the upload
// data
for (auto i = std::begin(reqvec) + (need_upgrade() && !reqvec[0]->data_prd);
i != std::end(reqvec); ++i) {
if (submit_request(this, config.headers, (*i).get()) != 0) {
return -1;
}
}
signal_write();
return 0;
}
int HttpClient::on_read(const uint8_t *data, size_t len) {
if (config.hexdump) {
util::hexdump(stdout, data, len);
}
auto rv = nghttp2_session_mem_recv(session, data, len);
if (rv < 0) {
std::cerr << "[ERROR] nghttp2_session_mem_recv() returned error: "
<< nghttp2_strerror(rv) << std::endl;
return -1;
}
assert(static_cast<size_t>(rv) == len);
if (nghttp2_session_want_read(session) == 0 &&
nghttp2_session_want_write(session) == 0 && wb.rleft() == 0) {
return -1;
}
signal_write();
return 0;
}
int HttpClient::on_write() {
for (;;) {
if (wb.rleft() >= 16384) {
return 0;
}
const uint8_t *data;
auto len = nghttp2_session_mem_send(session, &data);
if (len < 0) {
std::cerr << "[ERROR] nghttp2_session_send() returned error: "
<< nghttp2_strerror(len) << std::endl;
return -1;
}
if (len == 0) {
break;
}
wb.append(data, len);
}
if (nghttp2_session_want_read(session) == 0 &&
nghttp2_session_want_write(session) == 0 && wb.rleft() == 0) {
return -1;
}
return 0;
}
int HttpClient::tls_handshake() {
ev_timer_again(loop, &rt);
ERR_clear_error();
auto rv = SSL_do_handshake(ssl);
if (rv <= 0) {
auto err = SSL_get_error(ssl, rv);
switch (err) {
case SSL_ERROR_WANT_READ:
ev_io_stop(loop, &wev);
ev_timer_stop(loop, &wt);
return 0;
case SSL_ERROR_WANT_WRITE:
ev_io_start(loop, &wev);
ev_timer_again(loop, &wt);
return 0;
default:
return -1;
}
}
ev_io_stop(loop, &wev);
ev_timer_stop(loop, &wt);
readfn = &HttpClient::read_tls;
writefn = &HttpClient::write_tls;
if (config.verify_peer) {
auto verify_res = SSL_get_verify_result(ssl);
if (verify_res != X509_V_OK) {
std::cerr << "[WARNING] Certificate verification failed: "
<< X509_verify_cert_error_string(verify_res) << std::endl;
}
}
if (connection_made() != 0) {
return -1;
}
return 0;
}
int HttpClient::read_tls() {
ev_timer_again(loop, &rt);
ERR_clear_error();
std::array<uint8_t, 8_k> buf;
for (;;) {
auto rv = SSL_read(ssl, buf.data(), buf.size());
if (rv <= 0) {
auto err = SSL_get_error(ssl, rv);
switch (err) {
case SSL_ERROR_WANT_READ:
return 0;
case SSL_ERROR_WANT_WRITE:
// renegotiation started
return -1;
default:
return -1;
}
}
if (on_readfn(*this, buf.data(), rv) != 0) {
return -1;
}
}
}
int HttpClient::write_tls() {
ev_timer_again(loop, &rt);
ERR_clear_error();
struct iovec iov;
for (;;) {
if (on_writefn(*this) != 0) {
return -1;
}
auto iovcnt = wb.riovec(&iov, 1);
if (iovcnt == 0) {
break;
}
auto rv = SSL_write(ssl, iov.iov_base, iov.iov_len);
if (rv <= 0) {
auto err = SSL_get_error(ssl, rv);
switch (err) {
case SSL_ERROR_WANT_READ:
// renegotiation started
return -1;
case SSL_ERROR_WANT_WRITE:
ev_io_start(loop, &wev);
ev_timer_again(loop, &wt);
return 0;
default:
return -1;
}
}
wb.drain(rv);
}
ev_io_stop(loop, &wev);
ev_timer_stop(loop, &wt);
return 0;
}
void HttpClient::signal_write() { ev_io_start(loop, &wev); }
bool HttpClient::all_requests_processed() const {
return complete == reqvec.size();
}
void HttpClient::update_hostport() {
if (reqvec.empty()) {
return;
}
scheme = util::get_uri_field(reqvec[0]->uri.c_str(), reqvec[0]->u, UF_SCHEMA)
.str();
std::stringstream ss;
if (reqvec[0]->is_ipv6_literal_addr()) {
// we may have zone ID, which must start with "%25", or "%". RFC
// 6874 defines "%25" only, and just "%" is allowed for just
// convenience to end-user input.
auto host =
util::get_uri_field(reqvec[0]->uri.c_str(), reqvec[0]->u, UF_HOST);
auto end = std::find(std::begin(host), std::end(host), '%');
ss << "[";
ss.write(host.c_str(), end - std::begin(host));
ss << "]";
} else {
util::write_uri_field(ss, reqvec[0]->uri.c_str(), reqvec[0]->u, UF_HOST);
}
if (util::has_uri_field(reqvec[0]->u, UF_PORT) &&
reqvec[0]->u.port !=
util::get_default_port(reqvec[0]->uri.c_str(), reqvec[0]->u)) {
ss << ":" << reqvec[0]->u.port;
}
hostport = ss.str();
}
bool HttpClient::add_request(const std::string &uri,
const nghttp2_data_provider *data_prd,
int64_t data_length,
const nghttp2_priority_spec &pri_spec, int level) {
http_parser_url u{};
if (http_parser_parse_url(uri.c_str(), uri.size(), 0, &u) != 0) {
return false;
}
if (path_cache.count(uri)) {
return false;
}
if (config.multiply == 1) {
path_cache.insert(uri);
}
reqvec.push_back(std::make_unique<Request>(uri, u, data_prd, data_length,
pri_spec, level));
return true;
}
void HttpClient::record_start_time() {
timing.system_start_time = std::chrono::system_clock::now();
timing.start_time = get_time();
}
void HttpClient::record_domain_lookup_end_time() {
timing.domain_lookup_end_time = get_time();
}
void HttpClient::record_connect_end_time() {
timing.connect_end_time = get_time();
}
void HttpClient::request_done(Request *req) {
if (req->stream_id % 2 == 0) {
return;
}
}
#ifdef HAVE_JANSSON
void HttpClient::output_har(FILE *outfile) {
static auto PAGE_ID = "page_0";
auto root = json_object();
auto log = json_object();
json_object_set_new(root, "log", log);
json_object_set_new(log, "version", json_string("1.2"));
auto creator = json_object();
json_object_set_new(log, "creator", creator);
json_object_set_new(creator, "name", json_string("nghttp"));
json_object_set_new(creator, "version", json_string(NGHTTP2_VERSION));
auto pages = json_array();
json_object_set_new(log, "pages", pages);
auto page = json_object();
json_array_append_new(pages, page);
json_object_set_new(
page, "startedDateTime",
json_string(util::format_iso8601(timing.system_start_time).c_str()));
json_object_set_new(page, "id", json_string(PAGE_ID));
json_object_set_new(page, "title", json_string(""));
json_object_set_new(page, "pageTimings", json_object());
auto entries = json_array();
json_object_set_new(log, "entries", entries);
auto dns_delta = std::chrono::duration_cast<std::chrono::microseconds>(
timing.domain_lookup_end_time - timing.start_time)
.count() /
1000.0;
auto connect_delta =
std::chrono::duration_cast<std::chrono::microseconds>(
timing.connect_end_time - timing.domain_lookup_end_time)
.count() /
1000.0;
for (size_t i = 0; i < reqvec.size(); ++i) {
auto &req = reqvec[i];
if (req->timing.state != RequestState::ON_COMPLETE) {
continue;
}
auto entry = json_object();
json_array_append_new(entries, entry);
auto &req_timing = req->timing;
auto request_time =
(i == 0) ? timing.system_start_time
: timing.system_start_time +
std::chrono::duration_cast<
std::chrono::system_clock::duration>(
req_timing.request_start_time - timing.start_time);
auto wait_delta =
std::chrono::duration_cast<std::chrono::microseconds>(
req_timing.response_start_time - req_timing.request_start_time)
.count() /
1000.0;
auto receive_delta =
std::chrono::duration_cast<std::chrono::microseconds>(
req_timing.response_end_time - req_timing.response_start_time)
.count() /
1000.0;
auto time_sum =
std::chrono::duration_cast<std::chrono::microseconds>(
(i == 0) ? (req_timing.response_end_time - timing.start_time)
: (req_timing.response_end_time -
req_timing.request_start_time))
.count() /
1000.0;
json_object_set_new(
entry, "startedDateTime",
json_string(util::format_iso8601(request_time).c_str()));
json_object_set_new(entry, "time", json_real(time_sum));
auto pushed = req->stream_id % 2 == 0;
json_object_set_new(entry, "comment",
json_string(pushed ? "Pushed Object" : ""));
auto request = json_object();
json_object_set_new(entry, "request", request);
auto req_headers = json_array();
json_object_set_new(request, "headers", req_headers);
for (auto &nv : req->req_nva) {
auto hd = json_object();
json_array_append_new(req_headers, hd);
json_object_set_new(hd, "name", json_string(nv.name.c_str()));
json_object_set_new(hd, "value", json_string(nv.value.c_str()));
}
json_object_set_new(request, "method", json_string(req->method.c_str()));
json_object_set_new(request, "url", json_string(req->uri.c_str()));
json_object_set_new(request, "httpVersion", json_string("HTTP/2.0"));
json_object_set_new(request, "cookies", json_array());
json_object_set_new(request, "queryString", json_array());
json_object_set_new(request, "headersSize", json_integer(-1));
json_object_set_new(request, "bodySize", json_integer(-1));
auto response = json_object();
json_object_set_new(entry, "response", response);
auto res_headers = json_array();
json_object_set_new(response, "headers", res_headers);
for (auto &nv : req->res_nva) {
auto hd = json_object();
json_array_append_new(res_headers, hd);
json_object_set_new(hd, "name", json_string(nv.name.c_str()));
json_object_set_new(hd, "value", json_string(nv.value.c_str()));
}
json_object_set_new(response, "status", json_integer(req->status));
json_object_set_new(response, "statusText", json_string(""));
json_object_set_new(response, "httpVersion", json_string("HTTP/2.0"));
json_object_set_new(response, "cookies", json_array());
auto content = json_object();
json_object_set_new(response, "content", content);
json_object_set_new(content, "size", json_integer(req->response_len));
auto content_type_ptr = http2::get_header(req->res_nva, "content-type");
const char *content_type = "";
if (content_type_ptr) {
content_type = content_type_ptr->value.c_str();
}
json_object_set_new(content, "mimeType", json_string(content_type));
json_object_set_new(response, "redirectURL", json_string(""));
json_object_set_new(response, "headersSize", json_integer(-1));
json_object_set_new(response, "bodySize", json_integer(-1));
json_object_set_new(entry, "cache", json_object());
auto timings = json_object();
json_object_set_new(entry, "timings", timings);
auto dns_timing = (i == 0) ? dns_delta : 0;
auto connect_timing = (i == 0) ? connect_delta : 0;
json_object_set_new(timings, "dns", json_real(dns_timing));
json_object_set_new(timings, "connect", json_real(connect_timing));
json_object_set_new(timings, "blocked", json_real(0.0));
json_object_set_new(timings, "send", json_real(0.0));
json_object_set_new(timings, "wait", json_real(wait_delta));
json_object_set_new(timings, "receive", json_real(receive_delta));
json_object_set_new(entry, "pageref", json_string(PAGE_ID));
json_object_set_new(entry, "connection",
json_string(util::utos(req->stream_id).c_str()));
}
json_dumpf(root, outfile, JSON_PRESERVE_ORDER | JSON_INDENT(2));
json_decref(root);
}
#endif // HAVE_JANSSON
namespace {
void update_html_parser(HttpClient *client, Request *req, const uint8_t *data,
size_t len, int fin) {
if (!req->html_parser) {
return;
}
req->update_html_parser(data, len, fin);
auto scheme = req->get_real_scheme();
auto host = req->get_real_host();
auto port = req->get_real_port();
for (auto &p : req->html_parser->get_links()) {
auto uri = strip_fragment(p.first.c_str());
auto res_type = p.second;
http_parser_url u{};
if (http_parser_parse_url(uri.c_str(), uri.size(), 0, &u) != 0) {
continue;
}
if (!util::fieldeq(uri.c_str(), u, UF_SCHEMA, scheme) ||
!util::fieldeq(uri.c_str(), u, UF_HOST, host)) {
continue;
}
auto link_port =
util::has_uri_field(u, UF_PORT) ? u.port : scheme == "https" ? 443 : 80;
if (port != link_port) {
continue;
}
// No POST data for assets
auto pri_spec = resolve_dep(res_type);
if (client->add_request(uri, nullptr, 0, pri_spec, req->level + 1)) {
submit_request(client, config.headers, client->reqvec.back().get());
}
}
req->html_parser->clear_links();
}
} // namespace
namespace {
HttpClient *get_client(void *user_data) {
return static_cast<HttpClient *>(user_data);
}
} // namespace
namespace {
int on_data_chunk_recv_callback(nghttp2_session *session, uint8_t flags,
int32_t stream_id, const uint8_t *data,
size_t len, void *user_data) {
auto client = get_client(user_data);
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, stream_id));
if (!req) {
return 0;
}
if (config.verbose >= 2) {
verbose_on_data_chunk_recv_callback(session, flags, stream_id, data, len,
user_data);
}
req->response_len += len;
if (req->inflater) {
while (len > 0) {
const size_t MAX_OUTLEN = 4_k;
std::array<uint8_t, MAX_OUTLEN> out;
size_t outlen = MAX_OUTLEN;
size_t tlen = len;
int rv =
nghttp2_gzip_inflate(req->inflater, out.data(), &outlen, data, &tlen);
if (rv != 0) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, stream_id,
NGHTTP2_INTERNAL_ERROR);
break;
}
if (!config.null_out) {
std::cout.write(reinterpret_cast<const char *>(out.data()), outlen);
}
update_html_parser(client, req, out.data(), outlen, 0);
data += tlen;
len -= tlen;
}
return 0;
}
if (!config.null_out) {
std::cout.write(reinterpret_cast<const char *>(data), len);
}
update_html_parser(client, req, data, len, 0);
return 0;
}
} // namespace
namespace {
ssize_t select_padding_callback(nghttp2_session *session,
const nghttp2_frame *frame, size_t max_payload,
void *user_data) {
return std::min(max_payload, frame->hd.length + config.padding);
}
} // namespace
namespace {
void check_response_header(nghttp2_session *session, Request *req) {
bool gzip = false;
req->expect_final_response = false;
auto status_hd = req->get_res_header(http2::HD__STATUS);
if (!status_hd) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, req->stream_id,
NGHTTP2_PROTOCOL_ERROR);
return;
}
auto status = http2::parse_http_status_code(StringRef{status_hd->value});
if (status == -1) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, req->stream_id,
NGHTTP2_PROTOCOL_ERROR);
return;
}
req->status = status;
for (auto &nv : req->res_nva) {
if ("content-encoding" == nv.name) {
gzip = util::strieq_l("gzip", nv.value) ||
util::strieq_l("deflate", nv.value);
continue;
}
}
if (req->status / 100 == 1) {
if (req->continue_timer && (req->status == 100)) {
// If the request is waiting for a 100 Continue, complete the handshake.
req->continue_timer->dispatch_continue();
}
req->expect_final_response = true;
req->status = 0;
req->res_nva.clear();
http2::init_hdidx(req->res_hdidx);
return;
} else if (req->continue_timer) {
// A final response stops any pending Expect/Continue handshake.
req->continue_timer->stop();
}
if (gzip) {
if (!req->inflater) {
req->init_inflater();
}
}
if (config.get_assets && req->level == 0) {
if (!req->html_parser) {
req->init_html_parser();
}
}
}
} // namespace
namespace {
int on_begin_headers_callback(nghttp2_session *session,
const nghttp2_frame *frame, void *user_data) {
auto client = get_client(user_data);
switch (frame->hd.type) {
case NGHTTP2_HEADERS: {
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
if (!req) {
break;
}
switch (frame->headers.cat) {
case NGHTTP2_HCAT_RESPONSE:
case NGHTTP2_HCAT_PUSH_RESPONSE:
req->record_response_start_time();
break;
default:
break;
}
break;
}
case NGHTTP2_PUSH_PROMISE: {
auto stream_id = frame->push_promise.promised_stream_id;
http_parser_url u{};
// TODO Set pri and level
nghttp2_priority_spec pri_spec;
nghttp2_priority_spec_default_init(&pri_spec);
auto req = std::make_unique<Request>("", u, nullptr, 0, pri_spec);
req->stream_id = stream_id;
nghttp2_session_set_stream_user_data(session, stream_id, req.get());
client->request_done(req.get());
req->record_request_start_time();
client->reqvec.push_back(std::move(req));
break;
}
}
return 0;
}
} // namespace
namespace {
int on_header_callback(nghttp2_session *session, const nghttp2_frame *frame,
const uint8_t *name, size_t namelen,
const uint8_t *value, size_t valuelen, uint8_t flags,
void *user_data) {
if (config.verbose) {
verbose_on_header_callback(session, frame, name, namelen, value, valuelen,
flags, user_data);
}
switch (frame->hd.type) {
case NGHTTP2_HEADERS: {
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
if (!req) {
break;
}
/* ignore trailer header */
if (frame->headers.cat == NGHTTP2_HCAT_HEADERS &&
!req->expect_final_response) {
break;
}
if (req->header_buffer_size + namelen + valuelen > 64_k) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, frame->hd.stream_id,
NGHTTP2_INTERNAL_ERROR);
return 0;
}
req->header_buffer_size += namelen + valuelen;
auto token = http2::lookup_token(name, namelen);
http2::index_header(req->res_hdidx, token, req->res_nva.size());
http2::add_header(req->res_nva, name, namelen, value, valuelen,
flags & NGHTTP2_NV_FLAG_NO_INDEX, token);
break;
}
case NGHTTP2_PUSH_PROMISE: {
auto req = static_cast<Request *>(nghttp2_session_get_stream_user_data(
session, frame->push_promise.promised_stream_id));
if (!req) {
break;
}
if (req->header_buffer_size + namelen + valuelen > 64_k) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->push_promise.promised_stream_id,
NGHTTP2_INTERNAL_ERROR);
return 0;
}
req->header_buffer_size += namelen + valuelen;
auto token = http2::lookup_token(name, namelen);
http2::index_header(req->req_hdidx, token, req->req_nva.size());
http2::add_header(req->req_nva, name, namelen, value, valuelen,
flags & NGHTTP2_NV_FLAG_NO_INDEX, token);
break;
}
}
return 0;
}
} // namespace
namespace {
int on_frame_recv_callback2(nghttp2_session *session,
const nghttp2_frame *frame, void *user_data) {
int rv = 0;
if (config.verbose) {
verbose_on_frame_recv_callback(session, frame, user_data);
}
auto client = get_client(user_data);
switch (frame->hd.type) {
case NGHTTP2_DATA: {
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
if (!req) {
return 0;
;
}
if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
req->record_response_end_time();
++client->success;
}
break;
}
case NGHTTP2_HEADERS: {
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
// If this is the HTTP Upgrade with OPTIONS method to avoid POST,
// req is nullptr.
if (!req) {
return 0;
;
}
switch (frame->headers.cat) {
case NGHTTP2_HCAT_RESPONSE:
case NGHTTP2_HCAT_PUSH_RESPONSE:
check_response_header(session, req);
break;
case NGHTTP2_HCAT_HEADERS:
if (req->expect_final_response) {
check_response_header(session, req);
break;
}
if ((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->hd.stream_id, NGHTTP2_PROTOCOL_ERROR);
return 0;
}
break;
default:
assert(0);
}
if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) {
req->record_response_end_time();
++client->success;
}
break;
}
case NGHTTP2_SETTINGS:
if ((frame->hd.flags & NGHTTP2_FLAG_ACK) == 0) {
break;
}
ev_timer_stop(client->loop, &client->settings_timer);
break;
case NGHTTP2_PUSH_PROMISE: {
auto req = static_cast<Request *>(nghttp2_session_get_stream_user_data(
session, frame->push_promise.promised_stream_id));
if (!req) {
break;
}
// Reset for response header field reception
req->header_buffer_size = 0;
auto scheme = req->get_req_header(http2::HD__SCHEME);
auto authority = req->get_req_header(http2::HD__AUTHORITY);
auto path = req->get_req_header(http2::HD__PATH);
if (!authority) {
authority = req->get_req_header(http2::HD_HOST);
}
// libnghttp2 guarantees :scheme, :method, :path and (:authority |
// host) exist and non-empty.
if (path->value[0] != '/') {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->push_promise.promised_stream_id,
NGHTTP2_PROTOCOL_ERROR);
break;
}
std::string uri = scheme->value;
uri += "://";
uri += authority->value;
uri += path->value;
http_parser_url u{};
if (http_parser_parse_url(uri.c_str(), uri.size(), 0, &u) != 0) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->push_promise.promised_stream_id,
NGHTTP2_PROTOCOL_ERROR);
break;
}
req->uri = uri;
req->u = u;
if (client->path_cache.count(uri)) {
nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE,
frame->push_promise.promised_stream_id,
NGHTTP2_CANCEL);
break;
}
if (config.multiply == 1) {
client->path_cache.insert(uri);
}
break;
}
}
return rv;
}
} // namespace
namespace {
int before_frame_send_callback(nghttp2_session *session,
const nghttp2_frame *frame, void *user_data) {
if (frame->hd.type != NGHTTP2_HEADERS ||
frame->headers.cat != NGHTTP2_HCAT_REQUEST) {
return 0;
}
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
assert(req);
req->record_request_start_time();
return 0;
}
} // namespace
namespace {
int on_frame_send_callback(nghttp2_session *session, const nghttp2_frame *frame,
void *user_data) {
if (config.verbose) {
verbose_on_frame_send_callback(session, frame, user_data);
}
if (frame->hd.type != NGHTTP2_HEADERS ||
frame->headers.cat != NGHTTP2_HCAT_REQUEST) {
return 0;
}
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
if (!req) {
return 0;
}
// If this request is using Expect/Continue, start its ContinueTimer.
if (req->continue_timer) {
req->continue_timer->start();
}
return 0;
}
} // namespace
namespace {
int on_frame_not_send_callback(nghttp2_session *session,
const nghttp2_frame *frame, int lib_error_code,
void *user_data) {
if (frame->hd.type != NGHTTP2_HEADERS ||
frame->headers.cat != NGHTTP2_HCAT_REQUEST) {
return 0;
}
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, frame->hd.stream_id));
if (!req) {
return 0;
}
std::cerr << "[ERROR] request " << req->uri
<< " failed: " << nghttp2_strerror(lib_error_code) << std::endl;
return 0;
}
} // namespace
namespace {
int on_stream_close_callback(nghttp2_session *session, int32_t stream_id,
uint32_t error_code, void *user_data) {
auto client = get_client(user_data);
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, stream_id));
if (!req) {
return 0;
}
// If this request is using Expect/Continue, stop its ContinueTimer.
if (req->continue_timer) {
req->continue_timer->stop();
}
update_html_parser(client, req, nullptr, 0, 1);
++client->complete;
if (client->all_requests_processed()) {
nghttp2_session_terminate_session(session, NGHTTP2_NO_ERROR);
}
return 0;
}
} // namespace
struct RequestResult {
std::chrono::microseconds time;
};
namespace {
void print_stats(const HttpClient &client) {
std::cout << "***** Statistics *****" << std::endl;
std::vector<Request *> reqs;
reqs.reserve(client.reqvec.size());
for (const auto &req : client.reqvec) {
if (req->timing.state == RequestState::ON_COMPLETE) {
reqs.push_back(req.get());
}
}
std::sort(std::begin(reqs), std::end(reqs),
[](const Request *lhs, const Request *rhs) {
const auto &ltiming = lhs->timing;
const auto &rtiming = rhs->timing;
return ltiming.response_end_time < rtiming.response_end_time ||
(ltiming.response_end_time == rtiming.response_end_time &&
ltiming.request_start_time < rtiming.request_start_time);
});
std::cout << R"(
Request timing:
responseEnd: the time when last byte of response was received
relative to connectEnd
requestStart: the time just before first byte of request was sent
relative to connectEnd. If '*' is shown, this was
pushed by server.
process: responseEnd - requestStart
code: HTTP status code
size: number of bytes received as response body without
inflation.
URI: request URI
see http://www.w3.org/TR/resource-timing/#processing-model
sorted by 'complete'
id responseEnd requestStart process code size request path)"
<< std::endl;
const auto &base = client.timing.connect_end_time;
for (const auto &req : reqs) {
auto response_end = std::chrono::duration_cast<std::chrono::microseconds>(
req->timing.response_end_time - base);
auto request_start = std::chrono::duration_cast<std::chrono::microseconds>(
req->timing.request_start_time - base);
auto total = std::chrono::duration_cast<std::chrono::microseconds>(
req->timing.response_end_time - req->timing.request_start_time);
auto pushed = req->stream_id % 2 == 0;
std::cout << std::setw(3) << req->stream_id << " " << std::setw(11)
<< ("+" + util::format_duration(response_end)) << " "
<< (pushed ? "*" : " ") << std::setw(11)
<< ("+" + util::format_duration(request_start)) << " "
<< std::setw(8) << util::format_duration(total) << " "
<< std::setw(4) << req->status << " " << std::setw(4)
<< util::utos_unit(req->response_len) << " "
<< req->make_reqpath() << std::endl;
}
}
} // namespace
#ifndef OPENSSL_NO_NEXTPROTONEG
namespace {
int client_select_next_proto_cb(SSL *ssl, unsigned char **out,
unsigned char *outlen, const unsigned char *in,
unsigned int inlen, void *arg) {
if (config.verbose) {
print_timer();
std::cout << "[NPN] server offers:" << std::endl;
}
for (unsigned int i = 0; i < inlen; i += in[i] + 1) {
if (config.verbose) {
std::cout << " * ";
std::cout.write(reinterpret_cast<const char *>(&in[i + 1]), in[i]);
std::cout << std::endl;
}
}
if (!util::select_h2(const_cast<const unsigned char **>(out), outlen, in,
inlen)) {
print_protocol_nego_error();
return SSL_TLSEXT_ERR_NOACK;
}
return SSL_TLSEXT_ERR_OK;
}
} // namespace
#endif // !OPENSSL_NO_NEXTPROTONEG
namespace {
int communicate(
const std::string &scheme, const std::string &host, uint16_t port,
std::vector<
std::tuple<std::string, nghttp2_data_provider *, int64_t, int32_t>>
requests,
const nghttp2_session_callbacks *callbacks) {
int result = 0;
auto loop = EV_DEFAULT;
SSL_CTX *ssl_ctx = nullptr;
if (scheme == "https") {
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
if (!ssl_ctx) {
std::cerr << "[ERROR] Failed to create SSL_CTX: "
<< ERR_error_string(ERR_get_error(), nullptr) << std::endl;
result = -1;
goto fin;
}
auto ssl_opts = (SSL_OP_ALL & ~SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS) |
SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_COMPRESSION |
SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION;
SSL_CTX_set_options(ssl_ctx, ssl_opts);
SSL_CTX_set_mode(ssl_ctx, SSL_MODE_AUTO_RETRY);
SSL_CTX_set_mode(ssl_ctx, SSL_MODE_RELEASE_BUFFERS);
if (SSL_CTX_set_default_verify_paths(ssl_ctx) != 1) {
std::cerr << "[WARNING] Could not load system trusted CA certificates: "
<< ERR_error_string(ERR_get_error(), nullptr) << std::endl;
}
if (nghttp2::tls::ssl_ctx_set_proto_versions(
ssl_ctx, nghttp2::tls::NGHTTP2_TLS_MIN_VERSION,
nghttp2::tls::NGHTTP2_TLS_MAX_VERSION) != 0) {
std::cerr << "[ERROR] Could not set TLS versions" << std::endl;
result = -1;
goto fin;
}
if (SSL_CTX_set_cipher_list(ssl_ctx, tls::DEFAULT_CIPHER_LIST) == 0) {
std::cerr << "[ERROR] " << ERR_error_string(ERR_get_error(), nullptr)
<< std::endl;
result = -1;
goto fin;
}
if (!config.keyfile.empty()) {
if (SSL_CTX_use_PrivateKey_file(ssl_ctx, config.keyfile.c_str(),
SSL_FILETYPE_PEM) != 1) {
std::cerr << "[ERROR] " << ERR_error_string(ERR_get_error(), nullptr)
<< std::endl;
result = -1;
goto fin;
}
}
if (!config.certfile.empty()) {
if (SSL_CTX_use_certificate_chain_file(ssl_ctx,
config.certfile.c_str()) != 1) {
std::cerr << "[ERROR] " << ERR_error_string(ERR_get_error(), nullptr)
<< std::endl;
result = -1;
goto fin;
}
}
#ifndef OPENSSL_NO_NEXTPROTONEG
SSL_CTX_set_next_proto_select_cb(ssl_ctx, client_select_next_proto_cb,
nullptr);
#endif // !OPENSSL_NO_NEXTPROTONEG
#if OPENSSL_VERSION_NUMBER >= 0x10002000L
auto proto_list = util::get_default_alpn();
SSL_CTX_set_alpn_protos(ssl_ctx, proto_list.data(), proto_list.size());
#endif // OPENSSL_VERSION_NUMBER >= 0x10002000L
}
{
HttpClient client{callbacks, loop, ssl_ctx};
int32_t dep_stream_id = 0;
if (!config.no_dep) {
dep_stream_id = anchors[ANCHOR_FOLLOWERS].stream_id;
}
for (auto &req : requests) {
nghttp2_priority_spec pri_spec;
nghttp2_priority_spec_init(&pri_spec, dep_stream_id, std::get<3>(req), 0);
for (int i = 0; i < config.multiply; ++i) {
client.add_request(std::get<0>(req), std::get<1>(req), std::get<2>(req),
pri_spec);
}
}
client.update_hostport();
client.record_start_time();
if (client.resolve_host(host, port) != 0) {
goto fin;
}
client.record_domain_lookup_end_time();
if (client.initiate_connection() != 0) {
std::cerr << "[ERROR] Could not connect to " << host << ", port " << port
<< std::endl;
goto fin;
}
ev_set_userdata(loop, &client);
ev_run(loop, 0);
ev_set_userdata(loop, nullptr);
#ifdef HAVE_JANSSON
if (!config.harfile.empty()) {
FILE *outfile;
if (config.harfile == "-") {
outfile = stdout;
} else {
outfile = fopen(config.harfile.c_str(), "wb");
}
if (outfile) {
client.output_har(outfile);
if (outfile != stdout) {
fclose(outfile);
}
} else {
std::cerr << "Cannot open file " << config.harfile << ". "
<< "har file could not be created." << std::endl;
}
}
#endif // HAVE_JANSSON
if (client.success != client.reqvec.size()) {
std::cerr << "Some requests were not processed. total="
<< client.reqvec.size() << ", processed=" << client.success
<< std::endl;
}
if (config.stat) {
print_stats(client);
}
}
fin:
if (ssl_ctx) {
SSL_CTX_free(ssl_ctx);
}
return result;
}
} // namespace
namespace {
ssize_t file_read_callback(nghttp2_session *session, int32_t stream_id,
uint8_t *buf, size_t length, uint32_t *data_flags,
nghttp2_data_source *source, void *user_data) {
int rv;
auto req = static_cast<Request *>(
nghttp2_session_get_stream_user_data(session, stream_id));
assert(req);
int fd = source->fd;
ssize_t nread;
while ((nread = pread(fd, buf, length, req->data_offset)) == -1 &&
errno == EINTR)
;
if (nread == -1) {
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
req->data_offset += nread;
if (req->data_offset == req->data_length) {
*data_flags |= NGHTTP2_DATA_FLAG_EOF;
if (!config.trailer.empty()) {
std::vector<nghttp2_nv> nva;
nva.reserve(config.trailer.size());
for (auto &kv : config.trailer) {
nva.push_back(http2::make_nv(kv.name, kv.value, kv.no_index));
}
rv = nghttp2_submit_trailer(session, stream_id, nva.data(), nva.size());
if (rv != 0) {
if (nghttp2_is_fatal(rv)) {
return NGHTTP2_ERR_CALLBACK_FAILURE;
}
} else {
*data_flags |= NGHTTP2_DATA_FLAG_NO_END_STREAM;
}
}
return nread;
}
if (req->data_offset > req->data_length || nread == 0) {
return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
}
return nread;
}
} // namespace
namespace {
int run(char **uris, int n) {
nghttp2_session_callbacks *callbacks;
nghttp2_session_callbacks_new(&callbacks);
auto cbsdel = defer(nghttp2_session_callbacks_del, callbacks);
nghttp2_session_callbacks_set_on_stream_close_callback(
callbacks, on_stream_close_callback);
nghttp2_session_callbacks_set_on_frame_recv_callback(callbacks,
on_frame_recv_callback2);
if (config.verbose) {
nghttp2_session_callbacks_set_on_invalid_frame_recv_callback(
callbacks, verbose_on_invalid_frame_recv_callback);
nghttp2_session_callbacks_set_error_callback2(callbacks,
verbose_error_callback);
}
nghttp2_session_callbacks_set_on_data_chunk_recv_callback(
callbacks, on_data_chunk_recv_callback);
nghttp2_session_callbacks_set_on_begin_headers_callback(
callbacks, on_begin_headers_callback);
nghttp2_session_callbacks_set_on_header_callback(callbacks,
on_header_callback);
nghttp2_session_callbacks_set_before_frame_send_callback(
callbacks, before_frame_send_callback);
nghttp2_session_callbacks_set_on_frame_send_callback(callbacks,
on_frame_send_callback);
nghttp2_session_callbacks_set_on_frame_not_send_callback(
callbacks, on_frame_not_send_callback);
if (config.padding) {
nghttp2_session_callbacks_set_select_padding_callback(
callbacks, select_padding_callback);
}
std::string prev_scheme;
std::string prev_host;
uint16_t prev_port = 0;
int failures = 0;
int data_fd = -1;
nghttp2_data_provider data_prd;
struct stat data_stat;
if (!config.datafile.empty()) {
if (config.datafile == "-") {
if (fstat(0, &data_stat) == 0 &&
(data_stat.st_mode & S_IFMT) == S_IFREG) {
// use STDIN if it is a regular file
data_fd = 0;
} else {
// copy the contents of STDIN to a temporary file
char tempfn[] = "/tmp/nghttp.temp.XXXXXX";
data_fd = mkstemp(tempfn);
if (data_fd == -1) {
std::cerr << "[ERROR] Could not create a temporary file in /tmp"
<< std::endl;
return 1;
}
if (unlink(tempfn) != 0) {
std::cerr << "[WARNING] failed to unlink temporary file:" << tempfn
<< std::endl;
}
while (1) {
std::array<char, 1_k> buf;
ssize_t rret, wret;
while ((rret = read(0, buf.data(), buf.size())) == -1 &&
errno == EINTR)
;
if (rret == 0)
break;
if (rret == -1) {
std::cerr << "[ERROR] I/O error while reading from STDIN"
<< std::endl;
return 1;
}
while ((wret = write(data_fd, buf.data(), rret)) == -1 &&
errno == EINTR)
;
if (wret != rret) {
std::cerr << "[ERROR] I/O error while writing to temporary file"
<< std::endl;
return 1;
}
}
if (fstat(data_fd, &data_stat) == -1) {
close(data_fd);
std::cerr << "[ERROR] Could not stat temporary file" << std::endl;
return 1;
}
}
} else {
data_fd = open(config.datafile.c_str(), O_RDONLY | O_BINARY);
if (data_fd == -1) {
std::cerr << "[ERROR] Could not open file " << config.datafile
<< std::endl;
return 1;
}
if (fstat(data_fd, &data_stat) == -1) {
close(data_fd);
std::cerr << "[ERROR] Could not stat file " << config.datafile
<< std::endl;
return 1;
}
}
data_prd.source.fd = data_fd;
data_prd.read_callback = file_read_callback;
}
std::vector<
std::tuple<std::string, nghttp2_data_provider *, int64_t, int32_t>>
requests;
size_t next_weight_idx = 0;
for (int i = 0; i < n; ++i) {
http_parser_url u{};
auto uri = strip_fragment(uris[i]);
if (http_parser_parse_url(uri.c_str(), uri.size(), 0, &u) != 0) {
++next_weight_idx;
std::cerr << "[ERROR] Could not parse URI " << uri << std::endl;
continue;
}
if (!util::has_uri_field(u, UF_SCHEMA)) {
++next_weight_idx;
std::cerr << "[ERROR] URI " << uri << " does not have scheme part"
<< std::endl;
continue;
}
auto port = util::has_uri_field(u, UF_PORT)
? u.port
: util::get_default_port(uri.c_str(), u);
auto host = decode_host(util::get_uri_field(uri.c_str(), u, UF_HOST));
if (!util::fieldeq(uri.c_str(), u, UF_SCHEMA, prev_scheme.c_str()) ||
host != prev_host || port != prev_port) {
if (!requests.empty()) {
if (communicate(prev_scheme, prev_host, prev_port, std::move(requests),
callbacks) != 0) {
++failures;
}
requests.clear();
}
prev_scheme = util::get_uri_field(uri.c_str(), u, UF_SCHEMA).str();
prev_host = std::move(host);
prev_port = port;
}
requests.emplace_back(uri, data_fd == -1 ? nullptr : &data_prd,
data_stat.st_size, config.weight[next_weight_idx++]);
}
if (!requests.empty()) {
if (communicate(prev_scheme, prev_host, prev_port, std::move(requests),
callbacks) != 0) {
++failures;
}
}
return failures;
}
} // namespace
namespace {
void print_version(std::ostream &out) {
out << "nghttp nghttp2/" NGHTTP2_VERSION << std::endl;
}
} // namespace
namespace {
void print_usage(std::ostream &out) {
out << R"(Usage: nghttp [OPTIONS]... <URI>...
HTTP/2 client)"
<< std::endl;
}
} // namespace
namespace {
void print_help(std::ostream &out) {
print_usage(out);
out << R"(
<URI> Specify URI to access.
Options:
-v, --verbose
Print debug information such as reception and
transmission of frames and name/value pairs. Specifying
this option multiple times increases verbosity.
-n, --null-out
Discard downloaded data.
-O, --remote-name
Save download data in the current directory. The
filename is derived from URI. If URI ends with '/',
'index.html' is used as a filename. Not implemented
yet.
-t, --timeout=<DURATION>
Timeout each request after <DURATION>. Set 0 to disable
timeout.
-w, --window-bits=<N>
Sets the stream level initial window size to 2**<N>-1.
-W, --connection-window-bits=<N>
Sets the connection level initial window size to
2**<N>-1.
-a, --get-assets
Download assets such as stylesheets, images and script
files linked from the downloaded resource. Only links
whose origins are the same with the linking resource
will be downloaded. nghttp prioritizes resources using
HTTP/2 dependency based priority. The priority order,
from highest to lowest, is html itself, css, javascript
and images.
-s, --stat Print statistics.
-H, --header=<HEADER>
Add a header to the requests. Example: -H':method: PUT'
--trailer=<HEADER>
Add a trailer header to the requests. <HEADER> must not
include pseudo header field (header field name starting
with ':'). To send trailer, one must use -d option to
send request body. Example: --trailer 'foo: bar'.
--cert=<CERT>
Use the specified client certificate file. The file
must be in PEM format.
--key=<KEY> Use the client private key file. The file must be in
PEM format.
-d, --data=<PATH>
Post FILE to server. If '-' is given, data will be read
from stdin.
-m, --multiply=<N>
Request each URI <N> times. By default, same URI is not
requested twice. This option disables it too.
-u, --upgrade
Perform HTTP Upgrade for HTTP/2. This option is ignored
if the request URI has https scheme. If -d is used, the
HTTP upgrade request is performed with OPTIONS method.
-p, --weight=<WEIGHT>
Sets weight of given URI. This option can be used
multiple times, and N-th -p option sets weight of N-th
URI in the command line. If the number of -p option is
less than the number of URI, the last -p option value is
repeated. If there is no -p option, default weight, 16,
is assumed. The valid value range is
[)"
<< NGHTTP2_MIN_WEIGHT << ", " << NGHTTP2_MAX_WEIGHT << R"(], inclusive.
-M, --peer-max-concurrent-streams=<N>
Use <N> as SETTINGS_MAX_CONCURRENT_STREAMS value of
remote endpoint as if it is received in SETTINGS frame.
Default: 100
-c, --header-table-size=<SIZE>
Specify decoder header table size. If this option is
used multiple times, and the minimum value among the
given values except for last one is strictly less than
the last value, that minimum value is set in SETTINGS
frame payload before the last value, to simulate
multiple header table size change.
--encoder-header-table-size=<SIZE>
Specify encoder header table size. The decoder (server)
specifies the maximum dynamic table size it accepts.
Then the negotiated dynamic table size is the minimum of
this option value and the value which server specified.
-b, --padding=<N>
Add at most <N> bytes to a frame payload as padding.
Specify 0 to disable padding.
-r, --har=<PATH>
Output HTTP transactions <PATH> in HAR format. If '-'
is given, data is written to stdout.
--color Force colored log output.
--continuation
Send large header to test CONTINUATION.
--no-content-length
Don't send content-length header field.
--no-dep Don't send dependency based priority hint to server.
--hexdump Display the incoming traffic in hexadecimal (Canonical
hex+ASCII display). If SSL/TLS is used, decrypted data
are used.
--no-push Disable server push.
--max-concurrent-streams=<N>
The number of concurrent pushed streams this client
accepts.
--expect-continue
Perform an Expect/Continue handshake: wait to send DATA
(up to a short timeout) until the server sends a 100
Continue interim response. This option is ignored unless
combined with the -d option.
-y, --no-verify-peer
Suppress warning on server certificate verification
failure.
--version Display version information and exit.
-h, --help Display this help and exit.
--
The <SIZE> argument is an integer and an optional unit (e.g., 10K is
10 * 1024). Units are K, M and G (powers of 1024).
The <DURATION> argument is an integer and an optional unit (e.g., 1s
is 1 second and 500ms is 500 milliseconds). Units are h, m, s or ms
(hours, minutes, seconds and milliseconds, respectively). If a unit
is omitted, a second is used as unit.)"
<< std::endl;
}
} // namespace
int main(int argc, char **argv) {
tls::libssl_init();
bool color = false;
while (1) {
static int flag = 0;
constexpr static option long_options[] = {
{"verbose", no_argument, nullptr, 'v'},
{"null-out", no_argument, nullptr, 'n'},
{"remote-name", no_argument, nullptr, 'O'},
{"timeout", required_argument, nullptr, 't'},
{"window-bits", required_argument, nullptr, 'w'},
{"connection-window-bits", required_argument, nullptr, 'W'},
{"get-assets", no_argument, nullptr, 'a'},
{"stat", no_argument, nullptr, 's'},
{"help", no_argument, nullptr, 'h'},
{"header", required_argument, nullptr, 'H'},
{"data", required_argument, nullptr, 'd'},
{"multiply", required_argument, nullptr, 'm'},
{"upgrade", no_argument, nullptr, 'u'},
{"weight", required_argument, nullptr, 'p'},
{"peer-max-concurrent-streams", required_argument, nullptr, 'M'},
{"header-table-size", required_argument, nullptr, 'c'},
{"padding", required_argument, nullptr, 'b'},
{"har", required_argument, nullptr, 'r'},
{"no-verify-peer", no_argument, nullptr, 'y'},
{"cert", required_argument, &flag, 1},
{"key", required_argument, &flag, 2},
{"color", no_argument, &flag, 3},
{"continuation", no_argument, &flag, 4},
{"version", no_argument, &flag, 5},
{"no-content-length", no_argument, &flag, 6},
{"no-dep", no_argument, &flag, 7},
{"trailer", required_argument, &flag, 9},
{"hexdump", no_argument, &flag, 10},
{"no-push", no_argument, &flag, 11},
{"max-concurrent-streams", required_argument, &flag, 12},
{"expect-continue", no_argument, &flag, 13},
{"encoder-header-table-size", required_argument, &flag, 14},
{nullptr, 0, nullptr, 0}};
int option_index = 0;
int c =
getopt_long(argc, argv, "M:Oab:c:d:m:np:r:hH:vst:uw:yW:", long_options,
&option_index);
if (c == -1) {
break;
}
switch (c) {
case 'M':
// peer-max-concurrent-streams option
config.peer_max_concurrent_streams = strtoul(optarg, nullptr, 10);
break;
case 'O':
config.remote_name = true;
break;
case 'h':
print_help(std::cout);
exit(EXIT_SUCCESS);
case 'b':
config.padding = strtol(optarg, nullptr, 10);
break;
case 'n':
config.null_out = true;
break;
case 'p': {
errno = 0;
auto n = strtoul(optarg, nullptr, 10);
if (errno == 0 && NGHTTP2_MIN_WEIGHT <= n && n <= NGHTTP2_MAX_WEIGHT) {
config.weight.push_back(n);
} else {
std::cerr << "-p: specify the integer in the range ["
<< NGHTTP2_MIN_WEIGHT << ", " << NGHTTP2_MAX_WEIGHT
<< "], inclusive" << std::endl;
exit(EXIT_FAILURE);
}
break;
}
case 'r':
#ifdef HAVE_JANSSON
config.harfile = optarg;
#else // !HAVE_JANSSON
std::cerr << "[WARNING]: -r, --har option is ignored because\n"
<< "the binary was not compiled with libjansson." << std::endl;
#endif // !HAVE_JANSSON
break;
case 'v':
++config.verbose;
break;
case 't':
config.timeout = util::parse_duration_with_unit(optarg);
if (config.timeout == std::numeric_limits<double>::infinity()) {
std::cerr << "-t: bad timeout value: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
break;
case 'u':
config.upgrade = true;
break;
case 'w':
case 'W': {
errno = 0;
char *endptr = nullptr;
unsigned long int n = strtoul(optarg, &endptr, 10);
if (errno == 0 && *endptr == '\0' && n < 31) {
if (c == 'w') {
config.window_bits = n;
} else {
config.connection_window_bits = n;
}
} else {
std::cerr << "-" << static_cast<char>(c)
<< ": specify the integer in the range [0, 30], inclusive"
<< std::endl;
exit(EXIT_FAILURE);
}
break;
}
case 'H': {
char *header = optarg;
// Skip first possible ':' in the header name
char *value = strchr(optarg + 1, ':');
if (!value || (header[0] == ':' && header + 1 == value)) {
std::cerr << "-H: invalid header: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
*value = 0;
value++;
while (isspace(*value)) {
value++;
}
if (*value == 0) {
// This could also be a valid case for suppressing a header
// similar to curl
std::cerr << "-H: invalid header - value missing: " << optarg
<< std::endl;
exit(EXIT_FAILURE);
}
config.headers.emplace_back(header, value, false);
util::inp_strlower(config.headers.back().name);
break;
}
case 'a':
#ifdef HAVE_LIBXML2
config.get_assets = true;
#else // !HAVE_LIBXML2
std::cerr << "[WARNING]: -a, --get-assets option is ignored because\n"
<< "the binary was not compiled with libxml2." << std::endl;
#endif // !HAVE_LIBXML2
break;
case 's':
config.stat = true;
break;
case 'd':
config.datafile = optarg;
break;
case 'm':
config.multiply = strtoul(optarg, nullptr, 10);
break;
case 'c': {
auto n = util::parse_uint_with_unit(optarg);
if (n == -1) {
std::cerr << "-c: Bad option value: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
if (n > std::numeric_limits<uint32_t>::max()) {
std::cerr << "-c: Value too large. It should be less than or equal to "
<< std::numeric_limits<uint32_t>::max() << std::endl;
exit(EXIT_FAILURE);
}
config.header_table_size = n;
config.min_header_table_size = std::min(config.min_header_table_size, n);
break;
}
case 'y':
config.verify_peer = false;
break;
case '?':
util::show_candidates(argv[optind - 1], long_options);
exit(EXIT_FAILURE);
case 0:
switch (flag) {
case 1:
// cert option
config.certfile = optarg;
break;
case 2:
// key option
config.keyfile = optarg;
break;
case 3:
// color option
color = true;
break;
case 4:
// continuation option
config.continuation = true;
break;
case 5:
// version option
print_version(std::cout);
exit(EXIT_SUCCESS);
case 6:
// no-content-length option
config.no_content_length = true;
break;
case 7:
// no-dep option
config.no_dep = true;
break;
case 9: {
// trailer option
auto header = optarg;
auto value = strchr(optarg, ':');
if (!value) {
std::cerr << "--trailer: invalid header: " << optarg << std::endl;
exit(EXIT_FAILURE);
}
*value = 0;
value++;
while (isspace(*value)) {
value++;
}
if (*value == 0) {
// This could also be a valid case for suppressing a header
// similar to curl
std::cerr << "--trailer: invalid header - value missing: " << optarg
<< std::endl;
exit(EXIT_FAILURE);
}
config.trailer.emplace_back(header, value, false);
util::inp_strlower(config.trailer.back().name);
break;
}
case 10:
// hexdump option
config.hexdump = true;
break;
case 11:
// no-push option
config.no_push = true;
break;
case 12:
// max-concurrent-streams option
config.max_concurrent_streams = strtoul(optarg, nullptr, 10);
break;
case 13:
// expect-continue option
config.expect_continue = true;
break;
case 14: {
// encoder-header-table-size option
auto n = util::parse_uint_with_unit(optarg);
if (n == -1) {
std::cerr << "--encoder-header-table-size: Bad option value: "
<< optarg << std::endl;
exit(EXIT_FAILURE);
}
if (n > std::numeric_limits<uint32_t>::max()) {
std::cerr << "--encoder-header-table-size: Value too large. It "
"should be less than or equal to "
<< std::numeric_limits<uint32_t>::max() << std::endl;
exit(EXIT_FAILURE);
}
config.encoder_header_table_size = n;
break;
}
}
break;
default:
break;
}
}
int32_t weight_to_fill;
if (config.weight.empty()) {
weight_to_fill = NGHTTP2_DEFAULT_WEIGHT;
} else {
weight_to_fill = config.weight.back();
}
config.weight.insert(std::end(config.weight), argc - optind, weight_to_fill);
// Find scheme overridden by extra header fields.
auto scheme_it =
std::find_if(std::begin(config.headers), std::end(config.headers),
[](const Header &nv) { return nv.name == ":scheme"; });
if (scheme_it != std::end(config.headers)) {
config.scheme_override = (*scheme_it).value;
}
// Find host and port overridden by extra header fields.
auto authority_it =
std::find_if(std::begin(config.headers), std::end(config.headers),
[](const Header &nv) { return nv.name == ":authority"; });
if (authority_it == std::end(config.headers)) {
authority_it =
std::find_if(std::begin(config.headers), std::end(config.headers),
[](const Header &nv) { return nv.name == "host"; });
}
if (authority_it != std::end(config.headers)) {
// authority_it may looks like "host:port".
auto uri = "https://" + (*authority_it).value;
http_parser_url u{};
if (http_parser_parse_url(uri.c_str(), uri.size(), 0, &u) != 0) {
std::cerr << "[ERROR] Could not parse authority in "
<< (*authority_it).name << ": " << (*authority_it).value
<< std::endl;
exit(EXIT_FAILURE);
}
config.host_override = util::get_uri_field(uri.c_str(), u, UF_HOST).str();
if (util::has_uri_field(u, UF_PORT)) {
config.port_override = u.port;
}
}
set_color_output(color || isatty(fileno(stdout)));
nghttp2_option_set_peer_max_concurrent_streams(
config.http2_option, config.peer_max_concurrent_streams);
if (config.encoder_header_table_size != -1) {
nghttp2_option_set_max_deflate_dynamic_table_size(
config.http2_option, config.encoder_header_table_size);
}
struct sigaction act {};
act.sa_handler = SIG_IGN;
sigaction(SIGPIPE, &act, nullptr);
reset_timer();
return run(argv + optind, argc - optind);
}
} // namespace nghttp2
int main(int argc, char **argv) {
return nghttp2::run_app(nghttp2::main, argc, argv);
}
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