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HttpServer.cc
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HttpServer.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 "HttpServer.h"
#include <sys/stat.h>
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif // HAVE_SYS_SOCKET_H
#ifdef HAVE_NETDB_H
# include <netdb.h>
#endif // HAVE_NETDB_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>
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif // HAVE_ARPA_INET_H
#include <cassert>
#include <set>
#include <iostream>
#include <thread>
#include <mutex>
#include <deque>
#include "ssl_compat.h"
#include <openssl/err.h>
#include <openssl/dh.h>
#if OPENSSL_3_0_0_API
# include <openssl/decoder.h>
#endif // OPENSSL_3_0_0_API
#include <zlib.h>
#include "app_helper.h"
#include "http2.h"
#include "util.h"
#include "tls.h"
#include "template.h"
#ifndef O_BINARY
# define O_BINARY (0)
#endif // O_BINARY
namespace nghttp2 {
namespace {
// TODO could be constexpr
constexpr auto DEFAULT_HTML = StringRef::from_lit("index.html");
constexpr auto NGHTTPD_SERVER =
StringRef::from_lit("nghttpd nghttp2/" NGHTTP2_VERSION);
} // namespace
namespace {
void delete_handler(Http2Handler *handler) {
handler->remove_self();
delete handler;
}
} // namespace
namespace {
void print_session_id(int64_t id) { std::cout << "[id=" << id << "] "; }
} // namespace
Config::Config()
: mime_types_file("/etc/mime.types"),
stream_read_timeout(1_min),
stream_write_timeout(1_min),
data_ptr(nullptr),
padding(0),
num_worker(1),
max_concurrent_streams(100),
header_table_size(-1),
encoder_header_table_size(-1),
window_bits(-1),
connection_window_bits(-1),
port(0),
verbose(false),
daemon(false),
verify_client(false),
no_tls(false),
error_gzip(false),
early_response(false),
hexdump(false),
echo_upload(false),
no_content_length(false) {}
Config::~Config() {}
namespace {
void stream_timeout_cb(struct ev_loop *loop, ev_timer *w, int revents) {
int rv;
auto stream = static_cast<Stream *>(w->data);
auto hd = stream->handler;
auto config = hd->get_config();
ev_timer_stop(hd->get_loop(), &stream->rtimer);
ev_timer_stop(hd->get_loop(), &stream->wtimer);
if (config->verbose) {
print_session_id(hd->session_id());
print_timer();
std::cout << " timeout stream_id=" << stream->stream_id << std::endl;
}
hd->submit_rst_stream(stream, NGHTTP2_INTERNAL_ERROR);
rv = hd->on_write();
if (rv == -1) {
delete_handler(hd);
}
}
} // namespace
namespace {
void add_stream_read_timeout(Stream *stream) {
auto hd = stream->handler;
ev_timer_again(hd->get_loop(), &stream->rtimer);
}
} // namespace
namespace {
void add_stream_read_timeout_if_pending(Stream *stream) {
auto hd = stream->handler;
if (ev_is_active(&stream->rtimer)) {
ev_timer_again(hd->get_loop(), &stream->rtimer);
}
}
} // namespace
namespace {
void add_stream_write_timeout(Stream *stream) {
auto hd = stream->handler;
ev_timer_again(hd->get_loop(), &stream->wtimer);
}
} // namespace
namespace {
void remove_stream_read_timeout(Stream *stream) {
auto hd = stream->handler;
ev_timer_stop(hd->get_loop(), &stream->rtimer);
}
} // namespace
namespace {
void remove_stream_write_timeout(Stream *stream) {
auto hd = stream->handler;
ev_timer_stop(hd->get_loop(), &stream->wtimer);
}
} // namespace
namespace {
void fill_callback(nghttp2_session_callbacks *callbacks, const Config *config);
} // namespace
namespace {
constexpr ev_tstamp RELEASE_FD_TIMEOUT = 2.;
} // namespace
namespace {
void release_fd_cb(struct ev_loop *loop, ev_timer *w, int revents);
} // namespace
namespace {
constexpr ev_tstamp FILE_ENTRY_MAX_AGE = 10.;
} // namespace
namespace {
constexpr size_t FILE_ENTRY_EVICT_THRES = 2048;
} // namespace
namespace {
bool need_validation_file_entry(const FileEntry *ent, ev_tstamp now) {
return ent->last_valid + FILE_ENTRY_MAX_AGE < now;
}
} // namespace
namespace {
bool validate_file_entry(FileEntry *ent, ev_tstamp now) {
struct stat stbuf;
int rv;
rv = fstat(ent->fd, &stbuf);
if (rv != 0) {
ent->stale = true;
return false;
}
if (stbuf.st_nlink == 0 || ent->mtime != stbuf.st_mtime) {
ent->stale = true;
return false;
}
ent->mtime = stbuf.st_mtime;
ent->last_valid = now;
return true;
}
} // namespace
class Sessions {
public:
Sessions(HttpServer *sv, struct ev_loop *loop, const Config *config,
SSL_CTX *ssl_ctx)
: sv_(sv),
loop_(loop),
config_(config),
ssl_ctx_(ssl_ctx),
callbacks_(nullptr),
option_(nullptr),
next_session_id_(1),
tstamp_cached_(ev_now(loop)),
cached_date_(util::http_date(tstamp_cached_)) {
nghttp2_session_callbacks_new(&callbacks_);
fill_callback(callbacks_, config_);
nghttp2_option_new(&option_);
if (config_->encoder_header_table_size != -1) {
nghttp2_option_set_max_deflate_dynamic_table_size(
option_, config_->encoder_header_table_size);
}
ev_timer_init(&release_fd_timer_, release_fd_cb, 0., RELEASE_FD_TIMEOUT);
release_fd_timer_.data = this;
}
~Sessions() {
ev_timer_stop(loop_, &release_fd_timer_);
for (auto handler : handlers_) {
delete handler;
}
nghttp2_option_del(option_);
nghttp2_session_callbacks_del(callbacks_);
}
void add_handler(Http2Handler *handler) { handlers_.insert(handler); }
void remove_handler(Http2Handler *handler) {
handlers_.erase(handler);
if (handlers_.empty() && !fd_cache_.empty()) {
ev_timer_again(loop_, &release_fd_timer_);
}
}
SSL_CTX *get_ssl_ctx() const { return ssl_ctx_; }
SSL *ssl_session_new(int fd) {
SSL *ssl = SSL_new(ssl_ctx_);
if (!ssl) {
std::cerr << "SSL_new() failed" << std::endl;
return nullptr;
}
if (SSL_set_fd(ssl, fd) == 0) {
std::cerr << "SSL_set_fd() failed" << std::endl;
SSL_free(ssl);
return nullptr;
}
return ssl;
}
const Config *get_config() const { return config_; }
struct ev_loop *get_loop() const {
return loop_;
}
int64_t get_next_session_id() {
auto session_id = next_session_id_;
if (next_session_id_ == std::numeric_limits<int64_t>::max()) {
next_session_id_ = 1;
} else {
++next_session_id_;
}
return session_id;
}
const nghttp2_session_callbacks *get_callbacks() const { return callbacks_; }
const nghttp2_option *get_option() const { return option_; }
void accept_connection(int fd) {
util::make_socket_nodelay(fd);
SSL *ssl = nullptr;
if (ssl_ctx_) {
ssl = ssl_session_new(fd);
if (!ssl) {
close(fd);
return;
}
}
auto handler =
std::make_unique<Http2Handler>(this, fd, ssl, get_next_session_id());
if (!ssl) {
if (handler->connection_made() != 0) {
return;
}
}
add_handler(handler.release());
}
void update_cached_date() { cached_date_ = util::http_date(tstamp_cached_); }
const std::string &get_cached_date() {
auto t = ev_now(loop_);
if (t != tstamp_cached_) {
tstamp_cached_ = t;
update_cached_date();
}
return cached_date_;
}
FileEntry *get_cached_fd(const std::string &path) {
auto range = fd_cache_.equal_range(path);
if (range.first == range.second) {
return nullptr;
}
auto now = ev_now(loop_);
for (auto it = range.first; it != range.second;) {
auto &ent = (*it).second;
if (ent->stale) {
++it;
continue;
}
if (need_validation_file_entry(ent.get(), now) &&
!validate_file_entry(ent.get(), now)) {
if (ent->usecount == 0) {
fd_cache_lru_.remove(ent.get());
close(ent->fd);
it = fd_cache_.erase(it);
continue;
}
++it;
continue;
}
fd_cache_lru_.remove(ent.get());
fd_cache_lru_.append(ent.get());
++ent->usecount;
return ent.get();
}
return nullptr;
}
FileEntry *cache_fd(const std::string &path, const FileEntry &ent) {
#ifdef HAVE_STD_MAP_EMPLACE
auto rv = fd_cache_.emplace(path, std::make_unique<FileEntry>(ent));
#else // !HAVE_STD_MAP_EMPLACE
// for gcc-4.7
auto rv = fd_cache_.insert(
std::make_pair(path, std::make_unique<FileEntry>(ent)));
#endif // !HAVE_STD_MAP_EMPLACE
auto &res = (*rv).second;
res->it = rv;
fd_cache_lru_.append(res.get());
while (fd_cache_.size() > FILE_ENTRY_EVICT_THRES) {
auto ent = fd_cache_lru_.head;
if (ent->usecount) {
break;
}
fd_cache_lru_.remove(ent);
close(ent->fd);
fd_cache_.erase(ent->it);
}
return res.get();
}
void release_fd(FileEntry *target) {
--target->usecount;
if (target->usecount == 0 && target->stale) {
fd_cache_lru_.remove(target);
close(target->fd);
fd_cache_.erase(target->it);
return;
}
// We use timer to close file descriptor and delete the entry from
// cache. The timer will be started when there is no handler.
}
void release_unused_fd() {
for (auto i = std::begin(fd_cache_); i != std::end(fd_cache_);) {
auto &ent = (*i).second;
if (ent->usecount != 0) {
++i;
continue;
}
fd_cache_lru_.remove(ent.get());
close(ent->fd);
i = fd_cache_.erase(i);
}
}
const HttpServer *get_server() const { return sv_; }
bool handlers_empty() const { return handlers_.empty(); }
private:
std::set<Http2Handler *> handlers_;
// cache for file descriptors to read file.
std::multimap<std::string, std::unique_ptr<FileEntry>> fd_cache_;
DList<FileEntry> fd_cache_lru_;
HttpServer *sv_;
struct ev_loop *loop_;
const Config *config_;
SSL_CTX *ssl_ctx_;
nghttp2_session_callbacks *callbacks_;
nghttp2_option *option_;
ev_timer release_fd_timer_;
int64_t next_session_id_;
ev_tstamp tstamp_cached_;
std::string cached_date_;
};
namespace {
void release_fd_cb(struct ev_loop *loop, ev_timer *w, int revents) {
auto sessions = static_cast<Sessions *>(w->data);
ev_timer_stop(loop, w);
if (!sessions->handlers_empty()) {
return;
}
sessions->release_unused_fd();
}
} // namespace
Stream::Stream(Http2Handler *handler, int32_t stream_id)
: balloc(1024, 1024),
header{},
handler(handler),
file_ent(nullptr),
body_length(0),
body_offset(0),
header_buffer_size(0),
stream_id(stream_id),
echo_upload(false) {
auto config = handler->get_config();
ev_timer_init(&rtimer, stream_timeout_cb, 0., config->stream_read_timeout);
ev_timer_init(&wtimer, stream_timeout_cb, 0., config->stream_write_timeout);
rtimer.data = this;
wtimer.data = this;
}
Stream::~Stream() {
if (file_ent != nullptr) {
auto sessions = handler->get_sessions();
sessions->release_fd(file_ent);
}
auto &rcbuf = header.rcbuf;
nghttp2_rcbuf_decref(rcbuf.method);
nghttp2_rcbuf_decref(rcbuf.scheme);
nghttp2_rcbuf_decref(rcbuf.authority);
nghttp2_rcbuf_decref(rcbuf.host);
nghttp2_rcbuf_decref(rcbuf.path);
nghttp2_rcbuf_decref(rcbuf.ims);
nghttp2_rcbuf_decref(rcbuf.expect);
auto loop = handler->get_loop();
ev_timer_stop(loop, &rtimer);
ev_timer_stop(loop, &wtimer);
}
namespace {
void on_session_closed(Http2Handler *hd, int64_t session_id) {
if (hd->get_config()->verbose) {
print_session_id(session_id);
print_timer();
std::cout << " closed" << std::endl;
}
}
} // namespace
namespace {
void settings_timeout_cb(struct ev_loop *loop, ev_timer *w, int revents) {
int rv;
auto hd = static_cast<Http2Handler *>(w->data);
hd->terminate_session(NGHTTP2_SETTINGS_TIMEOUT);
rv = hd->on_write();
if (rv == -1) {
delete_handler(hd);
}
}
} // namespace
namespace {
void readcb(struct ev_loop *loop, ev_io *w, int revents) {
int rv;
auto handler = static_cast<Http2Handler *>(w->data);
rv = handler->on_read();
if (rv == -1) {
delete_handler(handler);
}
}
} // namespace
namespace {
void writecb(struct ev_loop *loop, ev_io *w, int revents) {
int rv;
auto handler = static_cast<Http2Handler *>(w->data);
rv = handler->on_write();
if (rv == -1) {
delete_handler(handler);
}
}
} // namespace
Http2Handler::Http2Handler(Sessions *sessions, int fd, SSL *ssl,
int64_t session_id)
: session_id_(session_id),
session_(nullptr),
sessions_(sessions),
ssl_(ssl),
data_pending_(nullptr),
data_pendinglen_(0),
fd_(fd) {
ev_timer_init(&settings_timerev_, settings_timeout_cb, 10., 0.);
ev_io_init(&wev_, writecb, fd, EV_WRITE);
ev_io_init(&rev_, readcb, fd, EV_READ);
settings_timerev_.data = this;
wev_.data = this;
rev_.data = this;
auto loop = sessions_->get_loop();
ev_io_start(loop, &rev_);
if (ssl) {
SSL_set_accept_state(ssl);
read_ = &Http2Handler::tls_handshake;
write_ = &Http2Handler::tls_handshake;
} else {
read_ = &Http2Handler::read_clear;
write_ = &Http2Handler::write_clear;
}
}
Http2Handler::~Http2Handler() {
on_session_closed(this, session_id_);
nghttp2_session_del(session_);
if (ssl_) {
SSL_set_shutdown(ssl_, SSL_get_shutdown(ssl_) | SSL_RECEIVED_SHUTDOWN);
ERR_clear_error();
SSL_shutdown(ssl_);
}
auto loop = sessions_->get_loop();
ev_timer_stop(loop, &settings_timerev_);
ev_io_stop(loop, &rev_);
ev_io_stop(loop, &wev_);
if (ssl_) {
SSL_free(ssl_);
}
shutdown(fd_, SHUT_WR);
close(fd_);
}
void Http2Handler::remove_self() { sessions_->remove_handler(this); }
struct ev_loop *Http2Handler::get_loop() const {
return sessions_->get_loop();
}
Http2Handler::WriteBuf *Http2Handler::get_wb() { return &wb_; }
void Http2Handler::start_settings_timer() {
ev_timer_start(sessions_->get_loop(), &settings_timerev_);
}
int Http2Handler::fill_wb() {
if (data_pending_) {
auto n = std::min(wb_.wleft(), data_pendinglen_);
wb_.write(data_pending_, n);
if (n < data_pendinglen_) {
data_pending_ += n;
data_pendinglen_ -= n;
return 0;
}
data_pending_ = nullptr;
data_pendinglen_ = 0;
}
for (;;) {
const uint8_t *data;
auto datalen = nghttp2_session_mem_send(session_, &data);
if (datalen < 0) {
std::cerr << "nghttp2_session_mem_send() returned error: "
<< nghttp2_strerror(datalen) << std::endl;
return -1;
}
if (datalen == 0) {
break;
}
auto n = wb_.write(data, datalen);
if (n < static_cast<decltype(n)>(datalen)) {
data_pending_ = data + n;
data_pendinglen_ = datalen - n;
break;
}
}
return 0;
}
int Http2Handler::read_clear() {
int rv;
std::array<uint8_t, 8_k> buf;
ssize_t nread;
while ((nread = read(fd_, buf.data(), buf.size())) == -1 && errno == EINTR)
;
if (nread == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
return write_(*this);
}
return -1;
}
if (nread == 0) {
return -1;
}
if (get_config()->hexdump) {
util::hexdump(stdout, buf.data(), nread);
}
rv = nghttp2_session_mem_recv(session_, buf.data(), nread);
if (rv < 0) {
if (rv != NGHTTP2_ERR_BAD_CLIENT_MAGIC) {
std::cerr << "nghttp2_session_mem_recv() returned error: "
<< nghttp2_strerror(rv) << std::endl;
}
return -1;
}
return write_(*this);
}
int Http2Handler::write_clear() {
auto loop = sessions_->get_loop();
for (;;) {
if (wb_.rleft() > 0) {
ssize_t nwrite;
while ((nwrite = write(fd_, wb_.pos, wb_.rleft())) == -1 &&
errno == EINTR)
;
if (nwrite == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
ev_io_start(loop, &wev_);
return 0;
}
return -1;
}
wb_.drain(nwrite);
continue;
}
wb_.reset();
if (fill_wb() != 0) {
return -1;
}
if (wb_.rleft() == 0) {
break;
}
}
if (wb_.rleft() == 0) {
ev_io_stop(loop, &wev_);
} else {
ev_io_start(loop, &wev_);
}
if (nghttp2_session_want_read(session_) == 0 &&
nghttp2_session_want_write(session_) == 0 && wb_.rleft() == 0) {
return -1;
}
return 0;
}
int Http2Handler::tls_handshake() {
ev_io_stop(sessions_->get_loop(), &wev_);
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:
return 0;
case SSL_ERROR_WANT_WRITE:
ev_io_start(sessions_->get_loop(), &wev_);
return 0;
default:
return -1;
}
}
if (sessions_->get_config()->verbose) {
std::cerr << "SSL/TLS handshake completed" << std::endl;
}
if (verify_npn_result() != 0) {
return -1;
}
read_ = &Http2Handler::read_tls;
write_ = &Http2Handler::write_tls;
if (connection_made() != 0) {
return -1;
}
if (sessions_->get_config()->verbose) {
if (SSL_session_reused(ssl_)) {
std::cerr << "SSL/TLS session reused" << std::endl;
}
}
return 0;
}
int Http2Handler::read_tls() {
std::array<uint8_t, 8_k> buf;
ERR_clear_error();
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 write_(*this);
case SSL_ERROR_WANT_WRITE:
// renegotiation started
return -1;
default:
return -1;
}
}
auto nread = rv;
if (get_config()->hexdump) {
util::hexdump(stdout, buf.data(), nread);
}
rv = nghttp2_session_mem_recv(session_, buf.data(), nread);
if (rv < 0) {
if (rv != NGHTTP2_ERR_BAD_CLIENT_MAGIC) {
std::cerr << "nghttp2_session_mem_recv() returned error: "
<< nghttp2_strerror(rv) << std::endl;
}
return -1;
}
return write_(*this);
}
int Http2Handler::write_tls() {
auto loop = sessions_->get_loop();
ERR_clear_error();
for (;;) {
if (wb_.rleft() > 0) {
auto rv = SSL_write(ssl_, wb_.pos, wb_.rleft());
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(sessions_->get_loop(), &wev_);
return 0;
default:
return -1;
}
}
wb_.drain(rv);
continue;
}
wb_.reset();
if (fill_wb() != 0) {
return -1;
}
if (wb_.rleft() == 0) {
break;
}
}
if (wb_.rleft() == 0) {
ev_io_stop(loop, &wev_);
} else {
ev_io_start(loop, &wev_);
}
if (nghttp2_session_want_read(session_) == 0 &&
nghttp2_session_want_write(session_) == 0 && wb_.rleft() == 0) {
return -1;
}
return 0;
}
int Http2Handler::on_read() { return read_(*this); }
int Http2Handler::on_write() { return write_(*this); }
int Http2Handler::connection_made() {
int r;
r = nghttp2_session_server_new2(&session_, sessions_->get_callbacks(), this,
sessions_->get_option());
if (r != 0) {
return r;
}
auto config = sessions_->get_config();
std::array<nghttp2_settings_entry, 4> entry;
size_t niv = 1;
entry[0].settings_id = NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS;
entry[0].value = config->max_concurrent_streams;
if (config->header_table_size >= 0) {
entry[niv].settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE;
entry[niv].value = config->header_table_size;
++niv;
}
if (config->window_bits != -1) {
entry[niv].settings_id = NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE;
entry[niv].value = (1 << config->window_bits) - 1;
++niv;
}
r = nghttp2_submit_settings(session_, NGHTTP2_FLAG_NONE, entry.data(), niv);
if (r != 0) {
return r;
}
if (config->connection_window_bits != -1) {
r = nghttp2_session_set_local_window_size(
session_, NGHTTP2_FLAG_NONE, 0,
(1 << config->connection_window_bits) - 1);
if (r != 0) {
return r;
}
}
if (ssl_ && !nghttp2::tls::check_http2_requirement(ssl_)) {
terminate_session(NGHTTP2_INADEQUATE_SECURITY);
}
return on_write();
}
int Http2Handler::verify_npn_result() {
const unsigned char *next_proto = nullptr;
unsigned int next_proto_len;
// Check the negotiated protocol in NPN or ALPN
#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 (sessions_->get_config()->verbose) {
std::cout << "The negotiated protocol: " << proto << std::endl;
}
if (util::check_h2_is_selected(proto)) {
return 0;
}
break;
} else {
#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 (sessions_->get_config()->verbose) {
std::cerr << "Client did not advertise HTTP/2 protocol."
<< " (nghttp2 expects " << NGHTTP2_PROTO_VERSION_ID << ")"
<< std::endl;
}
return -1;
}
int Http2Handler::submit_file_response(const StringRef &status, Stream *stream,
time_t last_modified, off_t file_length,
const std::string *content_type,
nghttp2_data_provider *data_prd) {
std::string last_modified_str;
auto nva = make_array(http2::make_nv_ls_nocopy(":status", status),
http2::make_nv_ls_nocopy("server", NGHTTPD_SERVER),
http2::make_nv_ll("cache-control", "max-age=3600"),
http2::make_nv_ls("date", sessions_->get_cached_date()),
http2::make_nv_ll("", ""), http2::make_nv_ll("", ""),
http2::make_nv_ll("", ""), http2::make_nv_ll("", ""));
size_t nvlen = 4;
if (!get_config()->no_content_length) {
nva[nvlen++] = http2::make_nv_ls_nocopy(
"content-length",
util::make_string_ref_uint(stream->balloc, file_length));
}
if (last_modified != 0) {
last_modified_str = util::http_date(last_modified);
nva[nvlen++] = http2::make_nv_ls("last-modified", last_modified_str);
}
if (content_type) {
nva[nvlen++] = http2::make_nv_ls("content-type", *content_type);
}
auto &trailer_names = get_config()->trailer_names;
if (!trailer_names.empty()) {
nva[nvlen++] = http2::make_nv_ls_nocopy("trailer", trailer_names);
}
return nghttp2_submit_response(session_, stream->stream_id, nva.data(), nvlen,
data_prd);
}
int Http2Handler::submit_response(const StringRef &status, int32_t stream_id,
const HeaderRefs &headers,
nghttp2_data_provider *data_prd) {
auto nva = std::vector<nghttp2_nv>();
nva.reserve(4 + headers.size());
nva.push_back(http2::make_nv_ls_nocopy(":status", status));
nva.push_back(http2::make_nv_ls_nocopy("server", NGHTTPD_SERVER));
nva.push_back(http2::make_nv_ls("date", sessions_->get_cached_date()));
if (data_prd) {
auto &trailer_names = get_config()->trailer_names;
if (!trailer_names.empty()) {
nva.push_back(http2::make_nv_ls_nocopy("trailer", trailer_names));
}
}
for (auto &nv : headers) {
nva.push_back(http2::make_nv_nocopy(nv.name, nv.value, nv.no_index));
}
int r = nghttp2_submit_response(session_, stream_id, nva.data(), nva.size(),
data_prd);
return r;
}
int Http2Handler::submit_response(const StringRef &status, int32_t stream_id,
nghttp2_data_provider *data_prd) {
auto nva = make_array(http2::make_nv_ls_nocopy(":status", status),
http2::make_nv_ls_nocopy("server", NGHTTPD_SERVER),
http2::make_nv_ls("date", sessions_->get_cached_date()),
http2::make_nv_ll("", ""));
size_t nvlen = 3;
if (data_prd) {
auto &trailer_names = get_config()->trailer_names;
if (!trailer_names.empty()) {
nva[nvlen++] = http2::make_nv_ls_nocopy("trailer", trailer_names);
}
}
return nghttp2_submit_response(session_, stream_id, nva.data(), nvlen,
data_prd);
}
int Http2Handler::submit_non_final_response(const std::string &status,
int32_t stream_id) {
auto nva = make_array(http2::make_nv_ls(":status", status));
return nghttp2_submit_headers(session_, NGHTTP2_FLAG_NONE, stream_id, nullptr,
nva.data(), nva.size(), nullptr);
}