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nghttp2/src/shrpx.cc

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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2012 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 "shrpx.h"
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif // HAVE_SYS_SOCKET_H
#include <sys/un.h>
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif // HAVE_NETDB_H
#include <signal.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
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif // HAVE_UNISTD_H
#include <getopt.h>
#ifdef HAVE_SYSLOG_H
#include <syslog.h>
#endif // HAVE_SYSLOG_H
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif // HAVE_LIMITS_H
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif // HAVE_SYS_TIME_H
#include <sys/resource.h>
#include <cinttypes>
#include <limits>
#include <cstdlib>
#include <iostream>
#include <fstream>
#include <vector>
#include <initializer_list>
#include <openssl/ssl.h>
#include <openssl/err.h>
#include <ev.h>
#include <nghttp2/nghttp2.h>
#include "shrpx_config.h"
#include "shrpx_ssl.h"
#include "shrpx_log_config.h"
#include "shrpx_worker.h"
#include "shrpx_http2_upstream.h"
#include "shrpx_http2_session.h"
#include "shrpx_worker_process.h"
#include "shrpx_process.h"
#include "shrpx_signal.h"
#include "util.h"
#include "app_helper.h"
#include "ssl.h"
#include "template.h"
extern char **environ;
using namespace nghttp2;
namespace shrpx {
// Environment variables to tell new binary the listening socket's
// file descriptors. They are not close-on-exec.
#define ENV_LISTENER4_FD "NGHTTPX_LISTENER4_FD"
#define ENV_LISTENER6_FD "NGHTTPX_LISTENER6_FD"
// Environment variable to tell new binary the port number the current
// binary is listening to.
#define ENV_PORT "NGHTTPX_PORT"
// Environment variable to tell new binary the listening socket's file
// descriptor if frontend listens UNIX domain socket.
#define ENV_UNIX_FD "NGHTTP2_UNIX_FD"
// Environment variable to tell new binary the UNIX domain socket
// path.
#define ENV_UNIX_PATH "NGHTTP2_UNIX_PATH"
#ifndef _KERNEL_FASTOPEN
#define _KERNEL_FASTOPEN
// conditional define for TCP_FASTOPEN mostly on ubuntu
#ifndef TCP_FASTOPEN
#define TCP_FASTOPEN 23
#endif
// conditional define for SOL_TCP mostly on ubuntu
#ifndef SOL_TCP
#define SOL_TCP 6
#endif
#endif
struct SignalServer {
SignalServer()
: ipc_fd{{-1, -1}}, server_fd(-1), server_fd6(-1),
worker_process_pid(-1) {}
~SignalServer() {
if (server_fd6 != -1) {
close(server_fd6);
}
if (server_fd != -1) {
close(server_fd);
}
if (ipc_fd[0] != -1) {
close(ipc_fd[0]);
}
if (ipc_fd[1] != -1) {
shutdown(ipc_fd[1], SHUT_WR);
close(ipc_fd[1]);
}
}
std::array<int, 2> ipc_fd;
// server socket, either IPv4 or UNIX domain
int server_fd;
// server socket IPv6
int server_fd6;
pid_t worker_process_pid;
};
namespace {
int resolve_hostname(Address *addr, const char *hostname, uint16_t port,
int family) {
int rv;
auto service = util::utos(port);
addrinfo hints{};
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif // AI_ADDRCONFIG
addrinfo *res;
rv = getaddrinfo(hostname, service.c_str(), &hints, &res);
if (rv != 0) {
LOG(FATAL) << "Unable to resolve address for " << hostname << ": "
<< gai_strerror(rv);
return -1;
}
auto res_d = defer(freeaddrinfo, res);
char host[NI_MAXHOST];
rv = getnameinfo(res->ai_addr, res->ai_addrlen, host, sizeof(host), 0, 0,
NI_NUMERICHOST);
if (rv != 0) {
LOG(FATAL) << "Address resolution for " << hostname
<< " failed: " << gai_strerror(rv);
return -1;
}
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Address resolution for " << hostname
<< " succeeded: " << host;
}
memcpy(&addr->su, res->ai_addr, res->ai_addrlen);
addr->len = res->ai_addrlen;
return 0;
}
} // namespace
namespace {
int chown_to_running_user(const char *path) {
return chown(path, get_config()->uid, get_config()->gid);
}
} // namespace
namespace {
void save_pid() {
std::ofstream out(get_config()->pid_file.get(), std::ios::binary);
out << get_config()->pid << "\n";
out.close();
if (!out) {
LOG(ERROR) << "Could not save PID to file " << get_config()->pid_file.get();
exit(EXIT_FAILURE);
}
if (get_config()->uid != 0) {
if (chown_to_running_user(get_config()->pid_file.get()) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of pid file " << get_config()->pid_file.get()
<< " failed: " << strerror(error);
}
}
}
} // namespace
namespace {
void exec_binary(SignalServer *ssv) {
int rv;
sigset_t oldset;
LOG(NOTICE) << "Executing new binary";
rv = shrpx_signal_block_all(&oldset);
if (rv != 0) {
auto error = errno;
LOG(ERROR) << "Blocking all signals failed: " << strerror(error);
return;
}
auto pid = fork();
if (pid != 0) {
if (pid == -1) {
auto error = errno;
LOG(ERROR) << "fork() failed errno=" << error;
}
rv = shrpx_signal_set(&oldset);
if (rv != 0) {
auto error = errno;
LOG(FATAL) << "Restoring signal mask failed: " << strerror(error);
exit(EXIT_FAILURE);
}
return;
}
// child process
shrpx_signal_unset_master_proc_ign_handler();
rv = shrpx_signal_unblock_all();
if (setsid() == -1) {
auto error = errno;
LOG(ERROR) << "setsid() failed: " << strerror(error);
}
if (rv != 0) {
auto error = errno;
LOG(ERROR) << "Unblocking all signals failed: " << strerror(error);
_Exit(EXIT_FAILURE);
}
auto exec_path = util::get_exec_path(get_config()->argc, get_config()->argv,
get_config()->cwd);
if (!exec_path) {
LOG(ERROR) << "Could not resolve the executable path";
_Exit(EXIT_FAILURE);
}
auto argv = make_unique<char *[]>(get_config()->argc + 1);
argv[0] = exec_path;
for (int i = 1; i < get_config()->argc; ++i) {
argv[i] = get_config()->argv[i];
}
argv[get_config()->argc] = nullptr;
size_t envlen = 0;
for (char **p = environ; *p; ++p, ++envlen)
;
// 3 for missing (fd4, fd6 and port) or (unix fd and unix path)
auto envp = make_unique<char *[]>(envlen + 3 + 1);
size_t envidx = 0;
std::string fd, fd6, path, port;
if (get_config()->host_unix) {
fd = ENV_UNIX_FD "=";
fd += util::utos(ssv->server_fd);
envp[envidx++] = &fd[0];
path = ENV_UNIX_PATH "=";
path += get_config()->host.get();
envp[envidx++] = &path[0];
} else {
if (ssv->server_fd) {
fd = ENV_LISTENER4_FD "=";
fd += util::utos(ssv->server_fd);
envp[envidx++] = &fd[0];
}
if (ssv->server_fd6) {
fd6 = ENV_LISTENER6_FD "=";
fd6 += util::utos(ssv->server_fd6);
envp[envidx++] = &fd6[0];
}
port = ENV_PORT "=";
port += util::utos(get_config()->port);
envp[envidx++] = &port[0];
}
for (size_t i = 0; i < envlen; ++i) {
if (util::startsWith(environ[i], ENV_LISTENER4_FD) ||
util::startsWith(environ[i], ENV_LISTENER6_FD) ||
util::startsWith(environ[i], ENV_PORT) ||
util::startsWith(environ[i], ENV_UNIX_FD) ||
util::startsWith(environ[i], ENV_UNIX_PATH)) {
continue;
}
envp[envidx++] = environ[i];
}
envp[envidx++] = nullptr;
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "cmdline";
for (int i = 0; argv[i]; ++i) {
LOG(INFO) << i << ": " << argv[i];
}
LOG(INFO) << "environ";
for (int i = 0; envp[i]; ++i) {
LOG(INFO) << i << ": " << envp[i];
}
}
// restores original stderr
util::restore_original_fds();
if (execve(argv[0], argv.get(), envp.get()) == -1) {
auto error = errno;
LOG(ERROR) << "execve failed: errno=" << error;
_Exit(EXIT_FAILURE);
}
}
} // namespace
namespace {
void ipc_send(SignalServer *ssv, uint8_t ipc_event) {
ssize_t nwrite;
while ((nwrite = write(ssv->ipc_fd[1], &ipc_event, 1)) == -1 &&
errno == EINTR)
;
if (nwrite < 0) {
auto error = errno;
LOG(ERROR) << "Could not send IPC event to worker process: "
<< strerror(error);
return;
}
if (nwrite == 0) {
LOG(ERROR) << "Could not send IPC event due to pipe overflow";
return;
}
}
} // namespace
namespace {
void reopen_log(SignalServer *ssv) {
LOG(NOTICE) << "Reopening log files: master process";
(void)reopen_log_files();
redirect_stderr_to_errorlog();
ipc_send(ssv, SHRPX_IPC_REOPEN_LOG);
}
} // namespace
namespace {
void signal_cb(struct ev_loop *loop, ev_signal *w, int revents) {
auto ssv = static_cast<SignalServer *>(w->data);
if (ssv->worker_process_pid == -1) {
ev_break(loop);
return;
}
switch (w->signum) {
case REOPEN_LOG_SIGNAL:
reopen_log(ssv);
return;
case EXEC_BINARY_SIGNAL:
exec_binary(ssv);
return;
case GRACEFUL_SHUTDOWN_SIGNAL:
ipc_send(ssv, SHRPX_IPC_GRACEFUL_SHUTDOWN);
return;
default:
kill(ssv->worker_process_pid, w->signum);
ev_break(loop);
return;
}
}
} // namespace
namespace {
void worker_process_child_cb(struct ev_loop *loop, ev_child *w, int revents) {
log_chld(w->rpid, w->rstatus, "Worker process");
ev_child_stop(loop, w);
ev_break(loop);
}
} // namespace
namespace {
int create_unix_domain_server_socket() {
auto path = get_config()->host.get();
auto pathlen = strlen(path);
{
auto envfd = getenv(ENV_UNIX_FD);
auto envpath = getenv(ENV_UNIX_PATH);
if (envfd && envpath) {
auto fd = strtoul(envfd, nullptr, 10);
if (util::streq(envpath, path)) {
LOG(NOTICE) << "Listening on UNIX domain socket " << path;
return fd;
}
LOG(WARN) << "UNIX domain socket path was changed between old binary ("
<< envpath << ") and new binary (" << path << ")";
close(fd);
}
}
#ifdef SOCK_NONBLOCK
auto fd = socket(AF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0);
if (fd == -1) {
return -1;
}
#else // !SOCK_NONBLOCK
auto fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd == -1) {
return -1;
}
util::make_socket_nonblocking(fd);
#endif // !SOCK_NONBLOCK
int val = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
close(fd);
return -1;
}
sockaddr_union addr;
addr.un.sun_family = AF_UNIX;
if (pathlen + 1 > sizeof(addr.un.sun_path)) {
LOG(FATAL) << "UNIX domain socket path " << path << " is too long > "
<< sizeof(addr.un.sun_path);
close(fd);
return -1;
}
// copy path including terminal NULL
std::copy_n(path, pathlen + 1, addr.un.sun_path);
// unlink (remove) already existing UNIX domain socket path
unlink(path);
if (bind(fd, &addr.sa, sizeof(addr.un)) != 0) {
auto error = errno;
LOG(FATAL) << "Failed to bind UNIX domain socket, error=" << error;
close(fd);
return -1;
}
if (listen(fd, get_config()->backlog) != 0) {
auto error = errno;
LOG(FATAL) << "Failed to listen to UNIX domain socket, error=" << error;
close(fd);
return -1;
}
LOG(NOTICE) << "Listening on UNIX domain socket " << path;
return fd;
}
} // namespace
namespace {
int create_tcp_server_socket(int family) {
{
auto envfd =
getenv(family == AF_INET ? ENV_LISTENER4_FD : ENV_LISTENER6_FD);
auto envport = getenv(ENV_PORT);
if (envfd && envport) {
auto fd = strtoul(envfd, nullptr, 10);
auto port = strtoul(envport, nullptr, 10);
// Only do this iff NGHTTPX_PORT == get_config()->port.
// Otherwise, close fd, and create server socket as usual.
if (port == get_config()->port) {
LOG(NOTICE) << "Listening on port " << get_config()->port;
return fd;
}
LOG(WARN) << "Port was changed between old binary (" << port
<< ") and new binary (" << get_config()->port << ")";
close(fd);
}
}
int fd = -1;
int rv;
auto service = util::utos(get_config()->port);
addrinfo hints{};
hints.ai_family = family;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
#ifdef AI_ADDRCONFIG
hints.ai_flags |= AI_ADDRCONFIG;
#endif // AI_ADDRCONFIG
auto node = strcmp("*", get_config()->host.get()) == 0
? nullptr
: get_config()->host.get();
addrinfo *res, *rp;
rv = getaddrinfo(node, service.c_str(), &hints, &res);
if (rv != 0) {
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Unable to get IPv" << (family == AF_INET ? "4" : "6")
<< " address for " << get_config()->host.get() << ": "
<< gai_strerror(rv);
}
return -1;
}
auto res_d = defer(freeaddrinfo, res);
for (rp = res; rp; rp = rp->ai_next) {
#ifdef SOCK_NONBLOCK
fd =
socket(rp->ai_family, rp->ai_socktype | SOCK_NONBLOCK, rp->ai_protocol);
if (fd == -1) {
auto error = errno;
LOG(WARN) << "socket() syscall failed, error=" << error;
continue;
}
#else // !SOCK_NONBLOCK
fd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
if (fd == -1) {
auto error = errno;
LOG(WARN) << "socket() syscall failed, error=" << error;
continue;
}
util::make_socket_nonblocking(fd);
#endif // !SOCK_NONBLOCK
int val = 1;
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
auto error = errno;
LOG(WARN)
<< "Failed to set SO_REUSEADDR option to listener socket, error="
<< error;
close(fd);
continue;
}
#ifdef IPV6_V6ONLY
if (family == AF_INET6) {
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
auto error = errno;
LOG(WARN)
<< "Failed to set IPV6_V6ONLY option to listener socket, error="
<< error;
close(fd);
continue;
}
}
#endif // IPV6_V6ONLY
#ifdef TCP_DEFER_ACCEPT
val = 3;
if (setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
LOG(WARN) << "Failed to set TCP_DEFER_ACCEPT option to listener socket";
}
#endif // TCP_DEFER_ACCEPT
// When we are executing new binary, and the old binary did not
// bind privileged port (< 1024) for some reason, binding to those
// ports will fail with permission denied error.
if (bind(fd, rp->ai_addr, rp->ai_addrlen) == -1) {
auto error = errno;
LOG(WARN) << "bind() syscall failed, error=" << error;
close(fd);
continue;
}
if (get_config()->fastopen > 0) {
val = get_config()->fastopen;
if (setsockopt(fd, SOL_TCP, TCP_FASTOPEN, &val,
static_cast<socklen_t>(sizeof(val))) == -1) {
LOG(WARN) << "Failed to set TCP_FASTOPEN option to listener socket";
}
}
if (listen(fd, get_config()->backlog) == -1) {
auto error = errno;
LOG(WARN) << "listen() syscall failed, error=" << error;
close(fd);
continue;
}
break;
}
if (!rp) {
LOG(WARN) << "Listening " << (family == AF_INET ? "IPv4" : "IPv6")
<< " socket failed";
return -1;
}
char host[NI_MAXHOST];
rv = getnameinfo(rp->ai_addr, rp->ai_addrlen, host, sizeof(host), nullptr, 0,
NI_NUMERICHOST);
if (rv != 0) {
LOG(WARN) << gai_strerror(rv);
close(fd);
return -1;
}
LOG(NOTICE) << "Listening on " << host << ", port " << get_config()->port;
return fd;
}
} // namespace
namespace {
int call_daemon() {
#ifdef __sgi
return _daemonize(0, 0, 0, 0);
#else // !__sgi
return daemon(0, 0);
#endif // !__sgi
}
} // namespace
namespace {
void close_env_fd(std::initializer_list<const char *> envnames) {
for (auto envname : envnames) {
auto envfd = getenv(envname);
if (!envfd) {
continue;
}
auto fd = strtol(envfd, nullptr, 10);
close(fd);
}
}
} // namespace
namespace {
pid_t fork_worker_process(SignalServer *ssv) {
int rv;
sigset_t oldset;
rv = shrpx_signal_block_all(&oldset);
if (rv != 0) {
auto error = errno;
LOG(ERROR) << "Blocking all signals failed: " << strerror(error);
return -1;
}
auto pid = fork();
if (pid == 0) {
ev_loop_fork(EV_DEFAULT);
shrpx_signal_set_worker_proc_ign_handler();
rv = shrpx_signal_unblock_all();
if (rv != 0) {
auto error = errno;
LOG(FATAL) << "Unblocking all signals failed: " << strerror(error);
_Exit(EXIT_FAILURE);
}
close(ssv->ipc_fd[1]);
WorkerProcessConfig wpconf{ssv->ipc_fd[0], ssv->server_fd, ssv->server_fd6};
rv = worker_process_event_loop(&wpconf);
if (rv != 0) {
LOG(FATAL) << "Worker process returned error";
_Exit(EXIT_FAILURE);
}
LOG(NOTICE) << "Worker process shutting down momentarily";
_Exit(EXIT_SUCCESS);
}
// parent process
if (pid == -1) {
auto error = errno;
LOG(ERROR) << "Could not spawn worker process: " << strerror(error);
}
rv = shrpx_signal_set(&oldset);
if (rv != 0) {
auto error = errno;
LOG(FATAL) << "Restoring signal mask failed: " << strerror(error);
exit(EXIT_FAILURE);
}
if (pid == -1) {
return -1;
}
close(ssv->ipc_fd[0]);
LOG(NOTICE) << "Worker process [" << pid << "] spawned";
return pid;
}
} // namespace
namespace {
int event_loop() {
int rv;
shrpx_signal_set_master_proc_ign_handler();
if (get_config()->daemon) {
if (call_daemon() == -1) {
auto error = errno;
LOG(FATAL) << "Failed to daemonize: " << strerror(error);
return -1;
}
// We get new PID after successful daemon().
mod_config()->pid = getpid();
// daemon redirects stderr file descriptor to /dev/null, so we
// need this.
redirect_stderr_to_errorlog();
}
if (get_config()->pid_file) {
save_pid();
}
SignalServer ssv;
rv = pipe(ssv.ipc_fd.data());
if (rv == -1) {
auto error = errno;
LOG(WARN) << "Failed to create pipe to communicate worker process: "
<< strerror(error);
return -1;
}
for (int i = 0; i < 2; ++i) {
auto fd = ssv.ipc_fd[i];
util::make_socket_nonblocking(fd);
util::make_socket_closeonexec(fd);
}
if (get_config()->host_unix) {
close_env_fd({ENV_LISTENER4_FD, ENV_LISTENER6_FD});
auto fd = create_unix_domain_server_socket();
if (fd == -1) {
LOG(FATAL) << "Failed to listen on UNIX domain socket "
<< get_config()->host.get();
return -1;
}
ssv.server_fd = fd;
if (get_config()->uid != 0) {
// fd is not associated to inode, so we cannot use fchown(2)
// here. https://lkml.org/lkml/2004/11/1/84
if (chown_to_running_user(get_config()->host.get()) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of UNIX domain socket "
<< get_config()->host.get() << " failed: " << strerror(error);
}
}
} else {
close_env_fd({ENV_UNIX_FD});
auto fd6 = create_tcp_server_socket(AF_INET6);
auto fd4 = create_tcp_server_socket(AF_INET);
if (fd6 == -1 && fd4 == -1) {
LOG(FATAL) << "Failed to listen on address " << get_config()->host.get()
<< ", port " << get_config()->port;
return -1;
}
ssv.server_fd = fd4;
ssv.server_fd6 = fd6;
}
auto loop = EV_DEFAULT;
auto pid = fork_worker_process(&ssv);
if (pid == -1) {
return -1;
}
ssv.worker_process_pid = pid;
constexpr auto signals = std::array<int, 3>{
{REOPEN_LOG_SIGNAL, EXEC_BINARY_SIGNAL, GRACEFUL_SHUTDOWN_SIGNAL}};
auto sigevs = std::array<ev_signal, signals.size()>();
for (size_t i = 0; i < signals.size(); ++i) {
auto sigev = &sigevs[i];
ev_signal_init(sigev, signal_cb, signals[i]);
sigev->data = &ssv;
ev_signal_start(loop, sigev);
}
ev_child worker_process_childev;
ev_child_init(&worker_process_childev, worker_process_child_cb, pid, 0);
worker_process_childev.data = nullptr;
ev_child_start(loop, &worker_process_childev);
ev_run(loop, 0);
return 0;
}
} // namespace
namespace {
// Returns true if regular file or symbolic link |path| exists.
bool conf_exists(const char *path) {
struct stat buf;
int rv = stat(path, &buf);
return rv == 0 && (buf.st_mode & (S_IFREG | S_IFLNK));
}
} // namespace
namespace {
constexpr char DEFAULT_NPN_LIST[] = "h2,h2-16,h2-14,"
#ifdef HAVE_SPDYLAY
"spdy/3.1,"
#endif // HAVE_SPDYLAY
"http/1.1";
} // namespace
namespace {
constexpr char DEFAULT_TLS_PROTO_LIST[] = "TLSv1.2,TLSv1.1";
} // namespace
namespace {
constexpr char DEFAULT_ACCESSLOG_FORMAT[] =
R"($remote_addr - - [$time_local] )"
R"("$request" $status $body_bytes_sent )"
R"("$http_referer" "$http_user_agent")";
} // namespace
namespace {
constexpr char DEFAULT_DOWNSTREAM_HOST[] = "127.0.0.1";
int16_t DEFAULT_DOWNSTREAM_PORT = 80;
} // namespace;
namespace {
void fill_default_config() {
*mod_config() = {};
mod_config()->verbose = false;
mod_config()->daemon = false;
mod_config()->server_name = "nghttpx nghttp2/" NGHTTP2_VERSION;
mod_config()->host = strcopy("*");
mod_config()->port = 3000;
mod_config()->private_key_file = nullptr;
mod_config()->private_key_passwd = nullptr;
mod_config()->cert_file = nullptr;
// Read timeout for HTTP2 upstream connection
mod_config()->http2_upstream_read_timeout = 3_min;
// Read timeout for non-HTTP2 upstream connection
mod_config()->upstream_read_timeout = 3_min;
// Write timeout for HTTP2/non-HTTP2 upstream connection
mod_config()->upstream_write_timeout = 30.;
// Read/Write timeouts for downstream connection
mod_config()->downstream_read_timeout = 3_min;
mod_config()->downstream_write_timeout = 30.;
// Read timeout for HTTP/2 stream
mod_config()->stream_read_timeout = 0.;
// Write timeout for HTTP/2 stream
mod_config()->stream_write_timeout = 0.;
// Timeout for pooled (idle) connections
mod_config()->downstream_idle_read_timeout = 2.;
// window bits for HTTP/2 and SPDY upstream/downstream connection
// per stream. 2**16-1 = 64KiB-1, which is HTTP/2 default. Please
// note that SPDY/3 default is 64KiB.
mod_config()->http2_upstream_window_bits = 16;
mod_config()->http2_downstream_window_bits = 16;
// HTTP/2 SPDY/3.1 has connection-level flow control. The default
// window size for HTTP/2 is 64KiB - 1. SPDY/3's default is 64KiB
mod_config()->http2_upstream_connection_window_bits = 16;
mod_config()->http2_downstream_connection_window_bits = 16;
mod_config()->upstream_no_tls = false;
mod_config()->downstream_no_tls = false;
mod_config()->num_worker = 1;
mod_config()->http2_max_concurrent_streams = 100;
mod_config()->add_x_forwarded_for = false;
mod_config()->strip_incoming_x_forwarded_for = false;
mod_config()->no_via = false;
mod_config()->accesslog_file = nullptr;
mod_config()->accesslog_syslog = false;
mod_config()->accesslog_format = parse_log_format(DEFAULT_ACCESSLOG_FORMAT);
mod_config()->errorlog_file = strcopy("/dev/stderr");
mod_config()->errorlog_syslog = false;
mod_config()->conf_path = strcopy("/etc/nghttpx/nghttpx.conf");
mod_config()->syslog_facility = LOG_DAEMON;
// Default accept() backlog
mod_config()->backlog = 512;
mod_config()->ciphers = nullptr;
mod_config()->http2_proxy = false;
mod_config()->http2_bridge = false;
mod_config()->client_proxy = false;
mod_config()->client = false;
mod_config()->client_mode = false;
mod_config()->insecure = false;
mod_config()->cacert = nullptr;
mod_config()->pid_file = nullptr;
mod_config()->user = nullptr;
mod_config()->uid = 0;
mod_config()->gid = 0;
mod_config()->pid = getpid();
mod_config()->backend_ipv4 = false;
mod_config()->backend_ipv6 = false;
mod_config()->downstream_http_proxy_userinfo = nullptr;
mod_config()->downstream_http_proxy_host = nullptr;
mod_config()->downstream_http_proxy_port = 0;
mod_config()->read_rate = 0;
mod_config()->read_burst = 0;
mod_config()->write_rate = 0;
mod_config()->write_burst = 0;
mod_config()->worker_read_rate = 0;
mod_config()->worker_read_burst = 0;
mod_config()->worker_write_rate = 0;
mod_config()->worker_write_burst = 0;
mod_config()->verify_client = false;
mod_config()->verify_client_cacert = nullptr;
mod_config()->client_private_key_file = nullptr;
mod_config()->client_cert_file = nullptr;
mod_config()->http2_upstream_dump_request_header = nullptr;
mod_config()->http2_upstream_dump_response_header = nullptr;
mod_config()->http2_no_cookie_crumbling = false;
mod_config()->upstream_frame_debug = false;
mod_config()->padding = 0;
mod_config()->worker_frontend_connections = 0;
nghttp2_option_new(&mod_config()->http2_option);
nghttp2_option_set_no_auto_window_update(get_config()->http2_option, 1);
nghttp2_option_set_no_recv_client_magic(get_config()->http2_option, 1);
nghttp2_option_new(&mod_config()->http2_client_option);
nghttp2_option_set_no_auto_window_update(get_config()->http2_client_option,
1);
nghttp2_option_set_peer_max_concurrent_streams(
get_config()->http2_client_option, 100);
mod_config()->tls_proto_mask = 0;
mod_config()->no_location_rewrite = false;
mod_config()->no_host_rewrite = true;
mod_config()->argc = 0;
mod_config()->argv = nullptr;
mod_config()->downstream_connections_per_host = 8;
mod_config()->downstream_connections_per_frontend = 0;
mod_config()->listener_disable_timeout = 0.;
mod_config()->downstream_request_buffer_size = 16_k;
mod_config()->downstream_response_buffer_size = 16_k;
mod_config()->no_server_push = false;
mod_config()->host_unix = false;
mod_config()->http2_downstream_connections_per_worker = 0;
// ocsp update interval = 14400 secs = 4 hours, borrowed from h2o
mod_config()->ocsp_update_interval = 4_h;
mod_config()->fetch_ocsp_response_file =
strcopy(PKGDATADIR "/fetch-ocsp-response");
mod_config()->no_ocsp = false;
mod_config()->header_field_buffer = 64_k;
mod_config()->max_header_fields = 100;
mod_config()->downstream_addr_group_catch_all = 0;
mod_config()->tls_ticket_key_cipher = EVP_aes_128_cbc();
mod_config()->tls_ticket_key_cipher_given = false;
mod_config()->tls_session_timeout = std::chrono::hours(12);
mod_config()->tls_ticket_key_memcached_max_retry = 3;
mod_config()->tls_ticket_key_memcached_max_fail = 2;
mod_config()->tls_ticket_key_memcached_interval = 10_min;
mod_config()->fastopen = 0;
}
} // namespace
namespace {
void print_version(std::ostream &out) {
out << get_config()->server_name << std::endl;
}
} // namespace
namespace {
void print_usage(std::ostream &out) {
out << R"(Usage: nghttpx [OPTIONS]... [<PRIVATE_KEY> <CERT>]
A reverse proxy for HTTP/2, HTTP/1 and SPDY.)" << std::endl;
}
} // namespace
namespace {
void print_help(std::ostream &out) {
print_usage(out);
out << R"(
<PRIVATE_KEY>
Set path to server's private key. Required unless -p,
--client or --frontend-no-tls are given.
<CERT> Set path to server's certificate. Required unless -p,
--client or --frontend-no-tls are given. To make OCSP
stapling work, this must be absolute path.
Options:
The options are categorized into several groups.
Connections:
-b, --backend=(<HOST>,<PORT>|unix:<PATH>)[;<PATTERN>[:...]]
Set backend host and port. The multiple backend
addresses are accepted by repeating this option. UNIX
domain socket can be specified by prefixing path name
with "unix:" (e.g., unix:/var/run/backend.sock).
Optionally, if <PATTERN>s are given, the backend address
is only used if request matches the pattern. If -s or
-p is used, <PATTERN>s are ignored. The pattern
matching is closely designed to ServeMux in net/http
package of Go programming language. <PATTERN> consists
of path, host + path or just host. The path must start
with "/". If it ends with "/", it matches all request
path in its subtree. To deal with the request to the
directory without trailing slash, the path which ends
with "/" also matches the request path which only lacks
trailing '/' (e.g., path "/foo/" matches request path
"/foo"). If it does not end with "/", it performs exact
match against the request path. If host is given, it
performs exact match against the request host. If host
alone is given, "/" is appended to it, so that it
matches all request paths under the host (e.g.,
specifying "nghttp2.org" equals to "nghttp2.org/").
Patterns with host take precedence over patterns with
just path. Then, longer patterns take precedence over
shorter ones, breaking a tie by the order of the
appearance in the configuration.
If <PATTERN> is omitted, "/" is used as pattern, which
matches all request paths (catch-all pattern). The
catch-all backend must be given.
When doing a match, nghttpx made some normalization to
pattern, request host and path. For host part, they are
converted to lower case. For path part, percent-encoded
unreserved characters defined in RFC 3986 are decoded,
and any dot-segments (".." and ".") are resolved and
removed.
For example, -b'127.0.0.1,8080;nghttp2.org/httpbin/'
matches the request host "nghttp2.org" and the request
path "/httpbin/get", but does not match the request host
"nghttp2.org" and the request path "/index.html".
The multiple <PATTERN>s can be specified, delimiting
them by ":". Specifying
-b'127.0.0.1,8080;nghttp2.org:www.nghttp2.org' has the
same effect to specify -b'127.0.0.1,8080;nghttp2.org'
and -b'127.0.0.1,8080;www.nghttp2.org'.
The backend addresses sharing same <PATTERN> are grouped
together forming load balancing group.
Since ";" and ":" are used as delimiter, <PATTERN> must
not contain these characters. Since ";" has special
meaning in shell, the option value must be quoted.
Default: )" << DEFAULT_DOWNSTREAM_HOST << ","
<< DEFAULT_DOWNSTREAM_PORT << R"(
-f, --frontend=(<HOST>,<PORT>|unix:<PATH>)
Set frontend host and port. If <HOST> is '*', it
assumes all addresses including both IPv4 and IPv6.
UNIX domain socket can be specified by prefixing path
name with "unix:" (e.g., unix:/var/run/nghttpx.sock)
Default: )" << get_config()->host.get() << ","
<< get_config()->port << R"(
--backlog=<N>
Set listen backlog size.
Default: )" << get_config()->backlog << R"(
--backend-ipv4
Resolve backend hostname to IPv4 address only.
--backend-ipv6
Resolve backend hostname to IPv6 address only.
--backend-http-proxy-uri=<URI>
Specify proxy URI in the form
http://[<USER>:<PASS>@]<PROXY>:<PORT>. If a proxy
requires authentication, specify <USER> and <PASS>.
Note that they must be properly percent-encoded. This
proxy is used when the backend connection is HTTP/2.
First, make a CONNECT request to the proxy and it
connects to the backend on behalf of nghttpx. This
forms tunnel. After that, nghttpx performs SSL/TLS
handshake with the downstream through the tunnel. The
timeouts when connecting and making CONNECT request can
be specified by --backend-read-timeout and
--backend-write-timeout options.
--accept-proxy-protocol
Accept PROXY protocol version 1 on frontend connection.
Performance:
-n, --workers=<N>
Set the number of worker threads.
Default: )" << get_config()->num_worker << R"(
--read-rate=<SIZE>
Set maximum average read rate on frontend connection.
Setting 0 to this option means read rate is unlimited.
Default: )" << get_config()->read_rate << R"(
--read-burst=<SIZE>
Set maximum read burst size on frontend connection.
Setting 0 to this option means read burst size is
unlimited.
Default: )" << get_config()->read_burst << R"(
--write-rate=<SIZE>
Set maximum average write rate on frontend connection.
Setting 0 to this option means write rate is unlimited.
Default: )" << get_config()->write_rate << R"(
--write-burst=<SIZE>
Set maximum write burst size on frontend connection.
Setting 0 to this option means write burst size is
unlimited.
Default: )" << get_config()->write_burst << R"(
--worker-read-rate=<SIZE>
Set maximum average read rate on frontend connection per
worker. Setting 0 to this option means read rate is
unlimited. Not implemented yet.
Default: )" << get_config()->worker_read_rate << R"(
--worker-read-burst=<SIZE>
Set maximum read burst size on frontend connection per
worker. Setting 0 to this option means read burst size
is unlimited. Not implemented yet.
Default: )" << get_config()->worker_read_burst << R"(
--worker-write-rate=<SIZE>
Set maximum average write rate on frontend connection
per worker. Setting 0 to this option means write rate
is unlimited. Not implemented yet.
Default: )" << get_config()->worker_write_rate << R"(
--worker-write-burst=<SIZE>
Set maximum write burst size on frontend connection per
worker. Setting 0 to this option means write burst size
is unlimited. Not implemented yet.
Default: )" << get_config()->worker_write_burst << R"(
--worker-frontend-connections=<N>
Set maximum number of simultaneous connections frontend
accepts. Setting 0 means unlimited.
Default: )" << get_config()->worker_frontend_connections << R"(
--backend-http2-connections-per-worker=<N>
Set maximum number of backend HTTP/2 physical
connections per worker. If pattern is used in -b
option, this limit is applied to each pattern group (in
other words, each pattern group can have maximum <N>
HTTP/2 connections). The default value is 0, which
means that the value is adjusted to the number of
backend addresses. If pattern is used, this adjustment
is done for each pattern group.
--backend-http1-connections-per-host=<N>
Set maximum number of backend concurrent HTTP/1
connections per origin host. This option is meaningful
when -s option is used. The origin host is determined
by authority portion of requset URI (or :authority
header field for HTTP/2). To limit the number of
connections per frontend for default mode, use
--backend-http1-connections-per-frontend.
Default: )" << get_config()->downstream_connections_per_host
<< R"(
--backend-http1-connections-per-frontend=<N>
Set maximum number of backend concurrent HTTP/1
connections per frontend. This option is only used for
default mode. 0 means unlimited. To limit the number
of connections per host for HTTP/2 or SPDY proxy mode
(-s option), use --backend-http1-connections-per-host.
Default: )" << get_config()->downstream_connections_per_frontend
<< R"(
--rlimit-nofile=<N>
Set maximum number of open files (RLIMIT_NOFILE) to <N>.
If 0 is given, nghttpx does not set the limit.
Default: )" << get_config()->rlimit_nofile << R"(
--backend-request-buffer=<SIZE>
Set buffer size used to store backend request.
Default: )"
<< util::utos_with_unit(get_config()->downstream_request_buffer_size)
<< R"(
--backend-response-buffer=<SIZE>
Set buffer size used to store backend response.
Default: )"
<< util::utos_with_unit(get_config()->downstream_response_buffer_size)
<< R"(
--fastopen=<N>
Enables "TCP Fast Open" for the listening socket and
limits the maximum length for the queue of connections
that have not yet completed the three-way handshake. If
value is 0 then fast open is disabled.
Default: )" << get_config()->fastopen << R"(
Timeout:
--frontend-http2-read-timeout=<DURATION>
Specify read timeout for HTTP/2 and SPDY frontend
connection.
Default: )"
<< util::duration_str(get_config()->http2_upstream_read_timeout) << R"(
--frontend-read-timeout=<DURATION>
Specify read timeout for HTTP/1.1 frontend connection.
Default: )"
<< util::duration_str(get_config()->upstream_read_timeout) << R"(
--frontend-write-timeout=<DURATION>
Specify write timeout for all frontend connections.
Default: )"
<< util::duration_str(get_config()->upstream_write_timeout) << R"(
--stream-read-timeout=<DURATION>
Specify read timeout for HTTP/2 and SPDY streams. 0
means no timeout.
Default: )"
<< util::duration_str(get_config()->stream_read_timeout) << R"(
--stream-write-timeout=<DURATION>
Specify write timeout for HTTP/2 and SPDY streams. 0
means no timeout.
Default: )"
<< util::duration_str(get_config()->stream_write_timeout) << R"(
--backend-read-timeout=<DURATION>
Specify read timeout for backend connection.
Default: )"
<< util::duration_str(get_config()->downstream_read_timeout) << R"(
--backend-write-timeout=<DURATION>
Specify write timeout for backend connection.
Default: )"
<< util::duration_str(get_config()->downstream_write_timeout) << R"(
--backend-keep-alive-timeout=<DURATION>
Specify keep-alive timeout for backend connection.
Default: )"
<< util::duration_str(get_config()->downstream_idle_read_timeout) << R"(
--listener-disable-timeout=<DURATION>
After accepting connection failed, connection listener
is disabled for a given amount of time. Specifying 0
disables this feature.
Default: )"
<< util::duration_str(get_config()->listener_disable_timeout) << R"(
SSL/TLS:
--ciphers=<SUITE>
Set allowed cipher list. The format of the string is
described in OpenSSL ciphers(1).
-k, --insecure
Don't verify backend server's certificate if -p,
--client or --http2-bridge are given and
--backend-no-tls is not given.
--cacert=<PATH>
Set path to trusted CA certificate file if -p, --client
or --http2-bridge are given and --backend-no-tls is not
given. The file must be in PEM format. It can contain
multiple certificates. If the linked OpenSSL is
configured to load system wide certificates, they are
loaded at startup regardless of this option.
--private-key-passwd-file=<PATH>
Path to file that contains password for the server's
private key. If none is given and the private key is
password protected it'll be requested interactively.
--subcert=<KEYPATH>:<CERTPATH>
Specify additional certificate and private key file.
nghttpx will choose certificates based on the hostname
indicated by client using TLS SNI extension. This
option can be used multiple times. To make OCSP
stapling work, <CERTPATH> must be absolute path.
--backend-tls-sni-field=<HOST>
Explicitly set the content of the TLS SNI extension.
This will default to the backend HOST name.
--dh-param-file=<PATH>
Path to file that contains DH parameters in PEM format.
Without this option, DHE cipher suites are not
available.
--npn-list=<LIST>
Comma delimited list of ALPN protocol identifier sorted
in the order of preference. That means most desirable
protocol comes first. This is used in both ALPN and
NPN. The parameter must be delimited by a single comma
only and any white spaces are treated as a part of
protocol string.
Default: )" << DEFAULT_NPN_LIST << R"(
--verify-client
Require and verify client certificate.
--verify-client-cacert=<PATH>
Path to file that contains CA certificates to verify
client certificate. The file must be in PEM format. It
can contain multiple certificates.
--client-private-key-file=<PATH>
Path to file that contains client private key used in
backend client authentication.
--client-cert-file=<PATH>
Path to file that contains client certificate used in
backend client authentication.
--tls-proto-list=<LIST>
Comma delimited list of SSL/TLS protocol to be enabled.
The following protocols are available: TLSv1.2, TLSv1.1
and TLSv1.0. The name matching is done in
case-insensitive manner. The parameter must be
delimited by a single comma only and any white spaces
are treated as a part of protocol string. If the
protocol list advertised by client does not overlap this
list, you will receive the error message "unknown
protocol".
Default: )" << DEFAULT_TLS_PROTO_LIST << R"(
--tls-ticket-key-file=<PATH>
Path to file that contains random data to construct TLS
session ticket parameters. If aes-128-cbc is given in
--tls-ticket-key-cipher, the file must contain exactly
48 bytes. If aes-256-cbc is given in
--tls-ticket-key-cipher, the file must contain exactly
80 bytes. This options can be used repeatedly to
specify multiple ticket parameters. If several files
are given, only the first key is used to encrypt TLS
session tickets. Other keys are accepted but server
will issue new session ticket with first key. This
allows session key rotation. Please note that key
rotation does not occur automatically. User should
rearrange files or change options values and restart
nghttpx gracefully. If opening or reading given file
fails, all loaded keys are discarded and it is treated
as if none of this option is given. If this option is
not given or an error occurred while opening or reading
a file, key is generated every 1 hour internally and
they are valid for 12 hours. This is recommended if
ticket key sharing between nghttpx instances is not
required.
--tls-ticket-key-memcached=<HOST>,<PORT>
Specify address of memcached server to store session
cache. This enables shared TLS ticket key between
multiple nghttpx instances. nghttpx does not set TLS
ticket key to memcached. The external ticket key
generator is required. nghttpx just gets TLS ticket
keys from memcached, and use them, possibly replacing
current set of keys. It is up to extern TLS ticket key
generator to rotate keys frequently. See "TLS SESSION
TICKET RESUMPTION" section in manual page to know the
data format in memcached entry.
--tls-ticket-key-memcached-interval=<DURATION>
Set interval to get TLS ticket keys from memcached.
Default: )"
<< util::duration_str(get_config()->tls_ticket_key_memcached_interval)
<< R"(
--tls-ticket-key-memcached-max-retry=<N>
Set maximum number of consecutive retries before
abandoning TLS ticket key retrieval. If this number is
reached, the attempt is considered as failure, and
"failure" count is incremented by 1, which contributed
to the value controlled
--tls-ticket-key-memcached-max-fail option.
Default: )" << get_config()->tls_ticket_key_memcached_max_retry
<< R"(
--tls-ticket-key-memcached-max-fail=<N>
Set maximum number of consecutive failure before
disabling TLS ticket until next scheduled key retrieval.
Default: )" << get_config()->tls_ticket_key_memcached_max_fail
<< R"(
--tls-ticket-key-cipher=<CIPHER>
Specify cipher to encrypt TLS session ticket. Specify
either aes-128-cbc or aes-256-cbc. By default,
aes-128-cbc is used.
--fetch-ocsp-response-file=<PATH>
Path to fetch-ocsp-response script file. It should be
absolute path.
Default: )" << get_config()->fetch_ocsp_response_file.get() << R"(
--ocsp-update-interval=<DURATION>
Set interval to update OCSP response cache.
Default: )"
<< util::duration_str(get_config()->ocsp_update_interval) << R"(
--no-ocsp Disable OCSP stapling.
--tls-session-cache-memcached=<HOST>,<PORT>
Specify address of memcached server to store session
cache. This enables shared session cache between
multiple nghttpx instances.
HTTP/2 and SPDY:
-c, --http2-max-concurrent-streams=<N>
Set the maximum number of the concurrent streams in one
HTTP/2 and SPDY session.
Default: )" << get_config()->http2_max_concurrent_streams << R"(
--frontend-http2-window-bits=<N>
Sets the per-stream initial window size of HTTP/2 SPDY
frontend connection. For HTTP/2, the size is 2**<N>-1.
For SPDY, the size is 2**<N>.
Default: )" << get_config()->http2_upstream_window_bits << R"(
--frontend-http2-connection-window-bits=<N>
Sets the per-connection window size of HTTP/2 and SPDY
frontend connection. For HTTP/2, the size is
2**<N>-1. For SPDY, the size is 2**<N>.
Default: )" << get_config()->http2_upstream_connection_window_bits
<< R"(
--frontend-no-tls
Disable SSL/TLS on frontend connections.
--backend-http2-window-bits=<N>
Sets the initial window size of HTTP/2 backend
connection to 2**<N>-1.
Default: )" << get_config()->http2_downstream_window_bits << R"(
--backend-http2-connection-window-bits=<N>
Sets the per-connection window size of HTTP/2 backend
connection to 2**<N>-1.
Default: )"
<< get_config()->http2_downstream_connection_window_bits << R"(
--backend-no-tls
Disable SSL/TLS on backend connections.
--http2-no-cookie-crumbling
Don't crumble cookie header field.
--padding=<N>
Add at most <N> bytes to a HTTP/2 frame payload as
padding. Specify 0 to disable padding. This option is
meant for debugging purpose and not intended to enhance
protocol security.
--no-server-push
Disable HTTP/2 server push. Server push is only
supported by default mode and HTTP/2 frontend. SPDY
frontend does not support server push.
Mode:
(default mode)
Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. If
--frontend-no-tls is used, accept HTTP/2 and HTTP/1.1.
The incoming HTTP/1.1 connection can be upgraded to
HTTP/2 through HTTP Upgrade. The protocol to the
backend is HTTP/1.1.
-s, --http2-proxy
Like default mode, but enable secure proxy mode.
--http2-bridge
Like default mode, but communicate with the backend in
HTTP/2 over SSL/TLS. Thus the incoming all connections
are converted to HTTP/2 connection and relayed to the
backend. See --backend-http-proxy-uri option if you are
behind the proxy and want to connect to the outside
HTTP/2 proxy.
--client Accept HTTP/2 and HTTP/1.1 without SSL/TLS. The
incoming HTTP/1.1 connection can be upgraded to HTTP/2
connection through HTTP Upgrade. The protocol to the
backend is HTTP/2. To use nghttpx as a forward proxy,
use -p option instead.
-p, --client-proxy
Like --client option, but it also requires the request
path from frontend must be an absolute URI, suitable for
use as a forward proxy.
Logging:
-L, --log-level=<LEVEL>
Set the severity level of log output. <LEVEL> must be
one of INFO, NOTICE, WARN, ERROR and FATAL.
Default: NOTICE
--accesslog-file=<PATH>
Set path to write access log. To reopen file, send USR1
signal to nghttpx.
--accesslog-syslog
Send access log to syslog. If this option is used,
--accesslog-file option is ignored.
--accesslog-format=<FORMAT>
Specify format string for access log. The default
format is combined format. The following variables are
available:
* $remote_addr: client IP address.
* $time_local: local time in Common Log format.
* $time_iso8601: local time in ISO 8601 format.
* $request: HTTP request line.
* $status: HTTP response status code.
* $body_bytes_sent: the number of bytes sent to client
as response body.
* $http_<VAR>: value of HTTP request header <VAR> where
'_' in <VAR> is replaced with '-'.
* $remote_port: client port.
* $server_port: server port.
* $request_time: request processing time in seconds with
milliseconds resolution.
* $pid: PID of the running process.
* $alpn: ALPN identifier of the protocol which generates
the response. For HTTP/1, ALPN is always http/1.1,
regardless of minor version.
* $ssl_cipher: cipher used for SSL/TLS connection.
* $ssl_protocol: protocol for SSL/TLS connection.
* $ssl_session_id: session ID for SSL/TLS connection.
* $ssl_session_reused: "r" if SSL/TLS session was
reused. Otherwise, "."
The variable can be enclosed by "{" and "}" for
disambiguation (e.g., ${remote_addr}).
Default: )" << DEFAULT_ACCESSLOG_FORMAT << R"(
--errorlog-file=<PATH>
Set path to write error log. To reopen file, send USR1
signal to nghttpx. stderr will be redirected to the
error log file unless --errorlog-syslog is used.
Default: )" << get_config()->errorlog_file.get() << R"(
--errorlog-syslog
Send error log to syslog. If this option is used,
--errorlog-file option is ignored.
--syslog-facility=<FACILITY>
Set syslog facility to <FACILITY>.
Default: )" << str_syslog_facility(get_config()->syslog_facility)
<< R"(
HTTP:
--add-x-forwarded-for
Append X-Forwarded-For header field to the downstream
request.
--strip-incoming-x-forwarded-for
Strip X-Forwarded-For header field from inbound client
requests.
--no-via Don't append to Via header field. If Via header field
is received, it is left unaltered.
--no-location-rewrite
Don't rewrite location header field on --http2-bridge,
--client and default mode. For --http2-proxy and
--client-proxy mode, location header field will not be
altered regardless of this option.
--host-rewrite
Rewrite host and :authority header fields on
--http2-bridge, --client and default mode. For
--http2-proxy and --client-proxy mode, these headers
will not be altered regardless of this option.
--altsvc=<PROTOID,PORT[,HOST,[ORIGIN]]>
Specify protocol ID, port, host and origin of
alternative service. <HOST> and <ORIGIN> are optional.
They are advertised in alt-svc header field only in
HTTP/1.1 frontend. This option can be used multiple
times to specify multiple alternative services.
Example: --altsvc=h2,443
--add-request-header=<HEADER>
Specify additional header field to add to request header
set. This option just appends header field and won't
replace anything already set. This option can be used
several times to specify multiple header fields.
Example: --add-request-header="foo: bar"
--add-response-header=<HEADER>
Specify additional header field to add to response
header set. This option just appends header field and
won't replace anything already set. This option can be
used several times to specify multiple header fields.
Example: --add-response-header="foo: bar"
--header-field-buffer=<SIZE>
Set maximum buffer size for incoming HTTP header field
list. This is the sum of header name and value in
bytes.
Default: )"
<< util::utos_with_unit(get_config()->header_field_buffer) << R"(
--max-header-fields=<N>
Set maximum number of incoming HTTP header fields, which
appear in one request or response header field list.
Default: )" << get_config()->max_header_fields << R"(
Debug:
--frontend-http2-dump-request-header=<PATH>
Dumps request headers received by HTTP/2 frontend to the
file denoted in <PATH>. The output is done in HTTP/1
header field format and each header block is followed by
an empty line. This option is not thread safe and MUST
NOT be used with option -n<N>, where <N> >= 2.
--frontend-http2-dump-response-header=<PATH>
Dumps response headers sent from HTTP/2 frontend to the
file denoted in <PATH>. The output is done in HTTP/1
header field format and each header block is followed by
an empty line. This option is not thread safe and MUST
NOT be used with option -n<N>, where <N> >= 2.
-o, --frontend-frame-debug
Print HTTP/2 frames in frontend to stderr. This option
is not thread safe and MUST NOT be used with option
-n=N, where N >= 2.
Process:
-D, --daemon
Run in a background. If -D is used, the current working
directory is changed to '/'.
--pid-file=<PATH>
Set path to save PID of this program.
--user=<USER>
Run this program as <USER>. This option is intended to
be used to drop root privileges.
Scripting:
--request-phase-file=<PATH>
Set mruby script file which will be executed when
request header fields are completely received from
frontend. This hook is called request phase hook.
--response-phase-file=<PATH>
Set mruby script file which will be executed when
response header fields are completely received from
backend. This hook is called response phase hook.
Misc:
--conf=<PATH>
Load configuration from <PATH>.
Default: )" << get_config()->conf_path.get() << R"(
--include=<PATH>
Load additional configurations from <PATH>. File <PATH>
is read when configuration parser encountered this
option. This option can be used multiple times, or even
recursively.
-v, --version
Print version and exit.
-h, --help Print 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) {
nghttp2::ssl::libssl_init();
#ifndef NOTHREADS
nghttp2::ssl::LibsslGlobalLock lock;
#endif // NOTHREADS
Log::set_severity_level(NOTICE);
create_config();
fill_default_config();
// make copy of stderr
util::store_original_fds();
// First open log files with default configuration, so that we can
// log errors/warnings while reading configuration files.
reopen_log_files();
mod_config()->original_argv = argv;
// We have to copy argv, since getopt_long may change its content.
mod_config()->argc = argc;
mod_config()->argv = new char *[argc];
for (int i = 0; i < argc; ++i) {
mod_config()->argv[i] = strdup(argv[i]);
}
mod_config()->cwd = getcwd(nullptr, 0);
if (mod_config()->cwd == nullptr) {
auto error = errno;
LOG(FATAL) << "failed to get current working directory: errno=" << error;
exit(EXIT_FAILURE);
}
std::vector<std::pair<const char *, const char *>> cmdcfgs;
while (1) {
static int flag = 0;
static option long_options[] = {
{SHRPX_OPT_DAEMON, no_argument, nullptr, 'D'},
{SHRPX_OPT_LOG_LEVEL, required_argument, nullptr, 'L'},
{SHRPX_OPT_BACKEND, required_argument, nullptr, 'b'},
{SHRPX_OPT_HTTP2_MAX_CONCURRENT_STREAMS, required_argument, nullptr,
'c'},
{SHRPX_OPT_FRONTEND, required_argument, nullptr, 'f'},
{"help", no_argument, nullptr, 'h'},
{SHRPX_OPT_INSECURE, no_argument, nullptr, 'k'},
{SHRPX_OPT_WORKERS, required_argument, nullptr, 'n'},
{SHRPX_OPT_CLIENT_PROXY, no_argument, nullptr, 'p'},
{SHRPX_OPT_HTTP2_PROXY, no_argument, nullptr, 's'},
{"version", no_argument, nullptr, 'v'},
{SHRPX_OPT_FRONTEND_FRAME_DEBUG, no_argument, nullptr, 'o'},
{SHRPX_OPT_ADD_X_FORWARDED_FOR, no_argument, &flag, 1},
{SHRPX_OPT_FRONTEND_HTTP2_READ_TIMEOUT, required_argument, &flag, 2},
{SHRPX_OPT_FRONTEND_READ_TIMEOUT, required_argument, &flag, 3},
{SHRPX_OPT_FRONTEND_WRITE_TIMEOUT, required_argument, &flag, 4},
{SHRPX_OPT_BACKEND_READ_TIMEOUT, required_argument, &flag, 5},
{SHRPX_OPT_BACKEND_WRITE_TIMEOUT, required_argument, &flag, 6},
{SHRPX_OPT_ACCESSLOG_FILE, required_argument, &flag, 7},
{SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT, required_argument, &flag, 8},
{SHRPX_OPT_FRONTEND_HTTP2_WINDOW_BITS, required_argument, &flag, 9},
{SHRPX_OPT_PID_FILE, required_argument, &flag, 10},
{SHRPX_OPT_USER, required_argument, &flag, 11},
{"conf", required_argument, &flag, 12},
{SHRPX_OPT_SYSLOG_FACILITY, required_argument, &flag, 14},
{SHRPX_OPT_BACKLOG, required_argument, &flag, 15},
{SHRPX_OPT_CIPHERS, required_argument, &flag, 16},
{SHRPX_OPT_CLIENT, no_argument, &flag, 17},
{SHRPX_OPT_BACKEND_HTTP2_WINDOW_BITS, required_argument, &flag, 18},
{SHRPX_OPT_CACERT, required_argument, &flag, 19},
{SHRPX_OPT_BACKEND_IPV4, no_argument, &flag, 20},
{SHRPX_OPT_BACKEND_IPV6, no_argument, &flag, 21},
{SHRPX_OPT_PRIVATE_KEY_PASSWD_FILE, required_argument, &flag, 22},
{SHRPX_OPT_NO_VIA, no_argument, &flag, 23},
{SHRPX_OPT_SUBCERT, required_argument, &flag, 24},
{SHRPX_OPT_HTTP2_BRIDGE, no_argument, &flag, 25},
{SHRPX_OPT_BACKEND_HTTP_PROXY_URI, required_argument, &flag, 26},
{SHRPX_OPT_BACKEND_NO_TLS, no_argument, &flag, 27},
{SHRPX_OPT_FRONTEND_NO_TLS, no_argument, &flag, 29},
{SHRPX_OPT_BACKEND_TLS_SNI_FIELD, required_argument, &flag, 31},
{SHRPX_OPT_DH_PARAM_FILE, required_argument, &flag, 33},
{SHRPX_OPT_READ_RATE, required_argument, &flag, 34},
{SHRPX_OPT_READ_BURST, required_argument, &flag, 35},
{SHRPX_OPT_WRITE_RATE, required_argument, &flag, 36},
{SHRPX_OPT_WRITE_BURST, required_argument, &flag, 37},
{SHRPX_OPT_NPN_LIST, required_argument, &flag, 38},
{SHRPX_OPT_VERIFY_CLIENT, no_argument, &flag, 39},
{SHRPX_OPT_VERIFY_CLIENT_CACERT, required_argument, &flag, 40},
{SHRPX_OPT_CLIENT_PRIVATE_KEY_FILE, required_argument, &flag, 41},
{SHRPX_OPT_CLIENT_CERT_FILE, required_argument, &flag, 42},
{SHRPX_OPT_FRONTEND_HTTP2_DUMP_REQUEST_HEADER, required_argument, &flag,
43},
{SHRPX_OPT_FRONTEND_HTTP2_DUMP_RESPONSE_HEADER, required_argument,
&flag, 44},
{SHRPX_OPT_HTTP2_NO_COOKIE_CRUMBLING, no_argument, &flag, 45},
{SHRPX_OPT_FRONTEND_HTTP2_CONNECTION_WINDOW_BITS, required_argument,
&flag, 46},
{SHRPX_OPT_BACKEND_HTTP2_CONNECTION_WINDOW_BITS, required_argument,
&flag, 47},
{SHRPX_OPT_TLS_PROTO_LIST, required_argument, &flag, 48},
{SHRPX_OPT_PADDING, required_argument, &flag, 49},
{SHRPX_OPT_WORKER_READ_RATE, required_argument, &flag, 50},
{SHRPX_OPT_WORKER_READ_BURST, required_argument, &flag, 51},
{SHRPX_OPT_WORKER_WRITE_RATE, required_argument, &flag, 52},
{SHRPX_OPT_WORKER_WRITE_BURST, required_argument, &flag, 53},
{SHRPX_OPT_ALTSVC, required_argument, &flag, 54},
{SHRPX_OPT_ADD_RESPONSE_HEADER, required_argument, &flag, 55},
{SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS, required_argument, &flag, 56},
{SHRPX_OPT_ACCESSLOG_SYSLOG, no_argument, &flag, 57},
{SHRPX_OPT_ERRORLOG_FILE, required_argument, &flag, 58},
{SHRPX_OPT_ERRORLOG_SYSLOG, no_argument, &flag, 59},
{SHRPX_OPT_STREAM_READ_TIMEOUT, required_argument, &flag, 60},
{SHRPX_OPT_STREAM_WRITE_TIMEOUT, required_argument, &flag, 61},
{SHRPX_OPT_NO_LOCATION_REWRITE, no_argument, &flag, 62},
{SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST, required_argument, &flag,
63},
{SHRPX_OPT_LISTENER_DISABLE_TIMEOUT, required_argument, &flag, 64},
{SHRPX_OPT_STRIP_INCOMING_X_FORWARDED_FOR, no_argument, &flag, 65},
{SHRPX_OPT_ACCESSLOG_FORMAT, required_argument, &flag, 66},
{SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND, required_argument,
&flag, 67},
{SHRPX_OPT_TLS_TICKET_KEY_FILE, required_argument, &flag, 68},
{SHRPX_OPT_RLIMIT_NOFILE, required_argument, &flag, 69},
{SHRPX_OPT_BACKEND_RESPONSE_BUFFER, required_argument, &flag, 71},
{SHRPX_OPT_BACKEND_REQUEST_BUFFER, required_argument, &flag, 72},
{SHRPX_OPT_NO_HOST_REWRITE, no_argument, &flag, 73},
{SHRPX_OPT_NO_SERVER_PUSH, no_argument, &flag, 74},
{SHRPX_OPT_BACKEND_HTTP2_CONNECTIONS_PER_WORKER, required_argument,
&flag, 76},
{SHRPX_OPT_FETCH_OCSP_RESPONSE_FILE, required_argument, &flag, 77},
{SHRPX_OPT_OCSP_UPDATE_INTERVAL, required_argument, &flag, 78},
{SHRPX_OPT_NO_OCSP, no_argument, &flag, 79},
{SHRPX_OPT_HEADER_FIELD_BUFFER, required_argument, &flag, 80},
{SHRPX_OPT_MAX_HEADER_FIELDS, required_argument, &flag, 81},
{SHRPX_OPT_ADD_REQUEST_HEADER, required_argument, &flag, 82},
{SHRPX_OPT_INCLUDE, required_argument, &flag, 83},
{SHRPX_OPT_TLS_TICKET_KEY_CIPHER, required_argument, &flag, 84},
{SHRPX_OPT_HOST_REWRITE, no_argument, &flag, 85},
{SHRPX_OPT_TLS_SESSION_CACHE_MEMCACHED, required_argument, &flag, 86},
{SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED, required_argument, &flag, 87},
{SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_INTERVAL, required_argument, &flag,
88},
{SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_MAX_RETRY, required_argument, &flag,
89},
{SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_MAX_FAIL, required_argument, &flag,
90},
{SHRPX_OPT_MRUBY_FILE, required_argument, &flag, 91},
{SHRPX_OPT_ACCEPT_PROXY_PROTOCOL, no_argument, &flag, 93},
{SHRPX_OPT_FASTOPEN, required_argument, &flag, 94},
{nullptr, 0, nullptr, 0}};
int option_index = 0;
int c = getopt_long(argc, argv, "DL:b:c:f:hkn:opsv", long_options,
&option_index);
if (c == -1) {
break;
}
switch (c) {
case 'D':
cmdcfgs.emplace_back(SHRPX_OPT_DAEMON, "yes");
break;
case 'L':
cmdcfgs.emplace_back(SHRPX_OPT_LOG_LEVEL, optarg);
break;
case 'b':
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND, optarg);
break;
case 'c':
cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_MAX_CONCURRENT_STREAMS, optarg);
break;
case 'f':
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND, optarg);
break;
case 'h':
print_help(std::cout);
exit(EXIT_SUCCESS);
case 'k':
cmdcfgs.emplace_back(SHRPX_OPT_INSECURE, "yes");
break;
case 'n':
cmdcfgs.emplace_back(SHRPX_OPT_WORKERS, optarg);
break;
case 'o':
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_FRAME_DEBUG, "yes");
break;
case 'p':
cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_PROXY, "yes");
break;
case 's':
cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_PROXY, "yes");
break;
case 'v':
print_version(std::cout);
exit(EXIT_SUCCESS);
case '?':
util::show_candidates(argv[optind - 1], long_options);
exit(EXIT_FAILURE);
case 0:
switch (flag) {
case 1:
// --add-x-forwarded-for
cmdcfgs.emplace_back(SHRPX_OPT_ADD_X_FORWARDED_FOR, "yes");
break;
case 2:
// --frontend-http2-read-timeout
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_READ_TIMEOUT, optarg);
break;
case 3:
// --frontend-read-timeout
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_READ_TIMEOUT, optarg);
break;
case 4:
// --frontend-write-timeout
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_WRITE_TIMEOUT, optarg);
break;
case 5:
// --backend-read-timeout
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_READ_TIMEOUT, optarg);
break;
case 6:
// --backend-write-timeout
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_WRITE_TIMEOUT, optarg);
break;
case 7:
cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_FILE, optarg);
break;
case 8:
// --backend-keep-alive-timeout
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_KEEP_ALIVE_TIMEOUT, optarg);
break;
case 9:
// --frontend-http2-window-bits
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_WINDOW_BITS, optarg);
break;
case 10:
cmdcfgs.emplace_back(SHRPX_OPT_PID_FILE, optarg);
break;
case 11:
cmdcfgs.emplace_back(SHRPX_OPT_USER, optarg);
break;
case 12:
// --conf
mod_config()->conf_path = strcopy(optarg);
break;
case 14:
// --syslog-facility
cmdcfgs.emplace_back(SHRPX_OPT_SYSLOG_FACILITY, optarg);
break;
case 15:
// --backlog
cmdcfgs.emplace_back(SHRPX_OPT_BACKLOG, optarg);
break;
case 16:
// --ciphers
cmdcfgs.emplace_back(SHRPX_OPT_CIPHERS, optarg);
break;
case 17:
// --client
cmdcfgs.emplace_back(SHRPX_OPT_CLIENT, "yes");
break;
case 18:
// --backend-http2-window-bits
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_WINDOW_BITS, optarg);
break;
case 19:
// --cacert
cmdcfgs.emplace_back(SHRPX_OPT_CACERT, optarg);
break;
case 20:
// --backend-ipv4
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_IPV4, "yes");
break;
case 21:
// --backend-ipv6
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_IPV6, "yes");
break;
case 22:
// --private-key-passwd-file
cmdcfgs.emplace_back(SHRPX_OPT_PRIVATE_KEY_PASSWD_FILE, optarg);
break;
case 23:
// --no-via
cmdcfgs.emplace_back(SHRPX_OPT_NO_VIA, "yes");
break;
case 24:
// --subcert
cmdcfgs.emplace_back(SHRPX_OPT_SUBCERT, optarg);
break;
case 25:
// --http2-bridge
cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_BRIDGE, "yes");
break;
case 26:
// --backend-http-proxy-uri
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP_PROXY_URI, optarg);
break;
case 27:
// --backend-no-tls
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_NO_TLS, "yes");
break;
case 29:
// --frontend-no-tls
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_NO_TLS, "yes");
break;
case 31:
// --backend-tls-sni-field
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_TLS_SNI_FIELD, optarg);
break;
case 33:
// --dh-param-file
cmdcfgs.emplace_back(SHRPX_OPT_DH_PARAM_FILE, optarg);
break;
case 34:
// --read-rate
cmdcfgs.emplace_back(SHRPX_OPT_READ_RATE, optarg);
break;
case 35:
// --read-burst
cmdcfgs.emplace_back(SHRPX_OPT_READ_BURST, optarg);
break;
case 36:
// --write-rate
cmdcfgs.emplace_back(SHRPX_OPT_WRITE_RATE, optarg);
break;
case 37:
// --write-burst
cmdcfgs.emplace_back(SHRPX_OPT_WRITE_BURST, optarg);
break;
case 38:
// --npn-list
cmdcfgs.emplace_back(SHRPX_OPT_NPN_LIST, optarg);
break;
case 39:
// --verify-client
cmdcfgs.emplace_back(SHRPX_OPT_VERIFY_CLIENT, "yes");
break;
case 40:
// --verify-client-cacert
cmdcfgs.emplace_back(SHRPX_OPT_VERIFY_CLIENT_CACERT, optarg);
break;
case 41:
// --client-private-key-file
cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_PRIVATE_KEY_FILE, optarg);
break;
case 42:
// --client-cert-file
cmdcfgs.emplace_back(SHRPX_OPT_CLIENT_CERT_FILE, optarg);
break;
case 43:
// --frontend-http2-dump-request-header
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_DUMP_REQUEST_HEADER,
optarg);
break;
case 44:
// --frontend-http2-dump-response-header
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_DUMP_RESPONSE_HEADER,
optarg);
break;
case 45:
// --http2-no-cookie-crumbling
cmdcfgs.emplace_back(SHRPX_OPT_HTTP2_NO_COOKIE_CRUMBLING, "yes");
break;
case 46:
// --frontend-http2-connection-window-bits
cmdcfgs.emplace_back(SHRPX_OPT_FRONTEND_HTTP2_CONNECTION_WINDOW_BITS,
optarg);
break;
case 47:
// --backend-http2-connection-window-bits
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_CONNECTION_WINDOW_BITS,
optarg);
break;
case 48:
// --tls-proto-list
cmdcfgs.emplace_back(SHRPX_OPT_TLS_PROTO_LIST, optarg);
break;
case 49:
// --padding
cmdcfgs.emplace_back(SHRPX_OPT_PADDING, optarg);
break;
case 50:
// --worker-read-rate
cmdcfgs.emplace_back(SHRPX_OPT_WORKER_READ_RATE, optarg);
break;
case 51:
// --worker-read-burst
cmdcfgs.emplace_back(SHRPX_OPT_WORKER_READ_BURST, optarg);
break;
case 52:
// --worker-write-rate
cmdcfgs.emplace_back(SHRPX_OPT_WORKER_WRITE_RATE, optarg);
break;
case 53:
// --worker-write-burst
cmdcfgs.emplace_back(SHRPX_OPT_WORKER_WRITE_BURST, optarg);
break;
case 54:
// --altsvc
cmdcfgs.emplace_back(SHRPX_OPT_ALTSVC, optarg);
break;
case 55:
// --add-response-header
cmdcfgs.emplace_back(SHRPX_OPT_ADD_RESPONSE_HEADER, optarg);
break;
case 56:
// --worker-frontend-connections
cmdcfgs.emplace_back(SHRPX_OPT_WORKER_FRONTEND_CONNECTIONS, optarg);
break;
case 57:
// --accesslog-syslog
cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_SYSLOG, "yes");
break;
case 58:
// --errorlog-file
cmdcfgs.emplace_back(SHRPX_OPT_ERRORLOG_FILE, optarg);
break;
case 59:
// --errorlog-syslog
cmdcfgs.emplace_back(SHRPX_OPT_ERRORLOG_SYSLOG, "yes");
break;
case 60:
// --stream-read-timeout
cmdcfgs.emplace_back(SHRPX_OPT_STREAM_READ_TIMEOUT, optarg);
break;
case 61:
// --stream-write-timeout
cmdcfgs.emplace_back(SHRPX_OPT_STREAM_WRITE_TIMEOUT, optarg);
break;
case 62:
// --no-location-rewrite
cmdcfgs.emplace_back(SHRPX_OPT_NO_LOCATION_REWRITE, "yes");
break;
case 63:
// --backend-http1-connections-per-host
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_HOST,
optarg);
break;
case 64:
// --listener-disable-timeout
cmdcfgs.emplace_back(SHRPX_OPT_LISTENER_DISABLE_TIMEOUT, optarg);
break;
case 65:
// --strip-incoming-x-forwarded-for
cmdcfgs.emplace_back(SHRPX_OPT_STRIP_INCOMING_X_FORWARDED_FOR, "yes");
break;
case 66:
// --accesslog-format
cmdcfgs.emplace_back(SHRPX_OPT_ACCESSLOG_FORMAT, optarg);
break;
case 67:
// --backend-http1-connections-per-frontend
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP1_CONNECTIONS_PER_FRONTEND,
optarg);
break;
case 68:
// --tls-ticket-key-file
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_FILE, optarg);
break;
case 69:
// --rlimit-nofile
cmdcfgs.emplace_back(SHRPX_OPT_RLIMIT_NOFILE, optarg);
break;
case 71:
// --backend-response-buffer
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_RESPONSE_BUFFER, optarg);
break;
case 72:
// --backend-request-buffer
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_REQUEST_BUFFER, optarg);
break;
case 73:
// --no-host-rewrite
cmdcfgs.emplace_back(SHRPX_OPT_NO_HOST_REWRITE, "yes");
break;
case 74:
// --no-server-push
cmdcfgs.emplace_back(SHRPX_OPT_NO_SERVER_PUSH, "yes");
break;
case 76:
// --backend-http2-connections-per-worker
cmdcfgs.emplace_back(SHRPX_OPT_BACKEND_HTTP2_CONNECTIONS_PER_WORKER,
optarg);
break;
case 77:
// --fetch-ocsp-response-file
cmdcfgs.emplace_back(SHRPX_OPT_FETCH_OCSP_RESPONSE_FILE, optarg);
break;
case 78:
// --ocsp-update-interval
cmdcfgs.emplace_back(SHRPX_OPT_OCSP_UPDATE_INTERVAL, optarg);
break;
case 79:
// --no-ocsp
cmdcfgs.emplace_back(SHRPX_OPT_NO_OCSP, "yes");
break;
case 80:
// --header-field-buffer
cmdcfgs.emplace_back(SHRPX_OPT_HEADER_FIELD_BUFFER, optarg);
break;
case 81:
// --max-header-fields
cmdcfgs.emplace_back(SHRPX_OPT_MAX_HEADER_FIELDS, optarg);
break;
case 82:
// --add-request-header
cmdcfgs.emplace_back(SHRPX_OPT_ADD_REQUEST_HEADER, optarg);
break;
case 83:
// --include
cmdcfgs.emplace_back(SHRPX_OPT_INCLUDE, optarg);
break;
case 84:
// --tls-ticket-key-cipher
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_CIPHER, optarg);
break;
case 85:
// --host-rewrite
cmdcfgs.emplace_back(SHRPX_OPT_HOST_REWRITE, "yes");
break;
case 86:
// --tls-session-cache-memcached
cmdcfgs.emplace_back(SHRPX_OPT_TLS_SESSION_CACHE_MEMCACHED, optarg);
break;
case 87:
// --tls-ticket-key-memcached
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED, optarg);
break;
case 88:
// --tls-ticket-key-memcached-interval
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_INTERVAL,
optarg);
break;
case 89:
// --tls-ticket-key-memcached-max-retry
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_MAX_RETRY,
optarg);
break;
case 90:
// --tls-ticket-key-memcached-max-fail
cmdcfgs.emplace_back(SHRPX_OPT_TLS_TICKET_KEY_MEMCACHED_MAX_FAIL,
optarg);
break;
case 91:
// --mruby-file
cmdcfgs.emplace_back(SHRPX_OPT_MRUBY_FILE, optarg);
break;
case 93:
// --accept-proxy-protocol
cmdcfgs.emplace_back(SHRPX_OPT_ACCEPT_PROXY_PROTOCOL, "yes");
break;
case 94:
// --fastopen
cmdcfgs.emplace_back(SHRPX_OPT_FASTOPEN, optarg);
break;
default:
break;
}
break;
default:
break;
}
}
if (conf_exists(get_config()->conf_path.get())) {
std::set<std::string> include_set;
if (load_config(get_config()->conf_path.get(), include_set) == -1) {
LOG(FATAL) << "Failed to load configuration from "
<< get_config()->conf_path.get();
exit(EXIT_FAILURE);
}
assert(include_set.empty());
}
if (argc - optind >= 2) {
cmdcfgs.emplace_back(SHRPX_OPT_PRIVATE_KEY_FILE, argv[optind++]);
cmdcfgs.emplace_back(SHRPX_OPT_CERTIFICATE_FILE, argv[optind++]);
}
// Reopen log files using configurations in file
reopen_log_files();
{
std::set<std::string> include_set;
for (size_t i = 0, len = cmdcfgs.size(); i < len; ++i) {
if (parse_config(cmdcfgs[i].first, cmdcfgs[i].second, include_set) ==
-1) {
LOG(FATAL) << "Failed to parse command-line argument.";
exit(EXIT_FAILURE);
}
}
assert(include_set.empty());
}
if (get_config()->accesslog_syslog || get_config()->errorlog_syslog) {
openlog("nghttpx", LOG_NDELAY | LOG_NOWAIT | LOG_PID,
get_config()->syslog_facility);
}
if (reopen_log_files() != 0) {
LOG(FATAL) << "Failed to open log file";
exit(EXIT_FAILURE);
}
redirect_stderr_to_errorlog();
if (get_config()->uid != 0) {
if (log_config()->accesslog_fd != -1 &&
fchown(log_config()->accesslog_fd, get_config()->uid,
get_config()->gid) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of access log file failed: "
<< strerror(error);
}
if (log_config()->errorlog_fd != -1 &&
fchown(log_config()->errorlog_fd, get_config()->uid,
get_config()->gid) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of error log file failed: "
<< strerror(error);
}
}
if (get_config()->http2_upstream_dump_request_header_file) {
auto path = get_config()->http2_upstream_dump_request_header_file.get();
auto f = open_file_for_write(path);
if (f == nullptr) {
LOG(FATAL) << "Failed to open http2 upstream request header file: "
<< path;
exit(EXIT_FAILURE);
}
mod_config()->http2_upstream_dump_request_header = f;
if (get_config()->uid != 0) {
if (chown_to_running_user(path) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of http2 upstream request header file "
<< path << " failed: " << strerror(error);
}
}
}
if (get_config()->http2_upstream_dump_response_header_file) {
auto path = get_config()->http2_upstream_dump_response_header_file.get();
auto f = open_file_for_write(path);
if (f == nullptr) {
LOG(FATAL) << "Failed to open http2 upstream response header file: "
<< path;
exit(EXIT_FAILURE);
}
mod_config()->http2_upstream_dump_response_header = f;
if (get_config()->uid != 0) {
if (chown_to_running_user(path) == -1) {
auto error = errno;
LOG(WARN) << "Changing owner of http2 upstream response header file"
<< " " << path << " failed: " << strerror(error);
}
}
}
if (get_config()->npn_list.empty()) {
mod_config()->npn_list = util::parse_config_str_list(DEFAULT_NPN_LIST);
}
if (get_config()->tls_proto_list.empty()) {
mod_config()->tls_proto_list =
util::parse_config_str_list(DEFAULT_TLS_PROTO_LIST);
}
mod_config()->tls_proto_mask =
ssl::create_tls_proto_mask(get_config()->tls_proto_list);
mod_config()->alpn_prefs = ssl::set_alpn_prefs(get_config()->npn_list);
if (get_config()->backend_ipv4 && get_config()->backend_ipv6) {
LOG(FATAL) << "--backend-ipv4 and --backend-ipv6 cannot be used at the "
<< "same time.";
exit(EXIT_FAILURE);
}
if (get_config()->worker_frontend_connections == 0) {
mod_config()->worker_frontend_connections =
std::numeric_limits<size_t>::max();
}
if (get_config()->http2_proxy + get_config()->http2_bridge +
get_config()->client_proxy + get_config()->client >
1) {
LOG(FATAL) << "--http2-proxy, --http2-bridge, --client-proxy and --client "
<< "cannot be used at the same time.";
exit(EXIT_FAILURE);
}
if (get_config()->client || get_config()->client_proxy) {
mod_config()->client_mode = true;
mod_config()->upstream_no_tls = true;
}
if (get_config()->client_mode || get_config()->http2_bridge) {
mod_config()->downstream_proto = PROTO_HTTP2;
} else {
mod_config()->downstream_proto = PROTO_HTTP;
}
if (!get_config()->upstream_no_tls &&
(!get_config()->private_key_file || !get_config()->cert_file)) {
print_usage(std::cerr);
LOG(FATAL) << "Too few arguments";
exit(EXIT_FAILURE);
}
if (!get_config()->upstream_no_tls && !get_config()->no_ocsp) {
struct stat buf;
if (stat(get_config()->fetch_ocsp_response_file.get(), &buf) != 0) {
mod_config()->no_ocsp = true;
LOG(WARN) << "--fetch-ocsp-response-file: "
<< get_config()->fetch_ocsp_response_file.get()
<< " not found. OCSP stapling has been disabled.";
}
}
if (get_config()->downstream_addr_groups.empty()) {
DownstreamAddr addr;
addr.host = strcopy(DEFAULT_DOWNSTREAM_HOST);
addr.port = DEFAULT_DOWNSTREAM_PORT;
DownstreamAddrGroup g("/");
g.addrs.push_back(std::move(addr));
mod_config()->router.add_route(g.pattern.get(), 1,
get_config()->downstream_addr_groups.size());
mod_config()->downstream_addr_groups.push_back(std::move(g));
} else if (get_config()->http2_proxy || get_config()->client_proxy) {
// We don't support host mapping in these cases. Move all
// non-catch-all patterns to catch-all pattern.
DownstreamAddrGroup catch_all("/");
for (auto &g : mod_config()->downstream_addr_groups) {
std::move(std::begin(g.addrs), std::end(g.addrs),
std::back_inserter(catch_all.addrs));
}
std::vector<DownstreamAddrGroup>().swap(
mod_config()->downstream_addr_groups);
// maybe not necessary?
mod_config()->router = Router();
mod_config()->router.add_route(catch_all.pattern.get(), 1,
get_config()->downstream_addr_groups.size());
mod_config()->downstream_addr_groups.push_back(std::move(catch_all));
}
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Resolving backend address";
}
ssize_t catch_all_group = -1;
for (size_t i = 0; i < mod_config()->downstream_addr_groups.size(); ++i) {
auto &g = mod_config()->downstream_addr_groups[i];
if (util::streq(g.pattern.get(), "/")) {
catch_all_group = i;
}
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Host-path pattern: group " << i << ": '" << g.pattern.get()
<< "'";
for (auto &addr : g.addrs) {
LOG(INFO) << "group " << i << " -> " << addr.host.get()
<< (addr.host_unix ? "" : ":" + util::utos(addr.port));
}
}
}
if (catch_all_group == -1) {
LOG(FATAL) << "-b: No catch-all backend address is configured";
exit(EXIT_FAILURE);
}
mod_config()->downstream_addr_group_catch_all = catch_all_group;
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Catch-all pattern is group " << catch_all_group;
}
for (auto &g : mod_config()->downstream_addr_groups) {
for (auto &addr : g.addrs) {
if (addr.host_unix) {
// for AF_UNIX socket, we use "localhost" as host for backend
// hostport. This is used as Host header field to backend and
// not going to be passed to any syscalls.
addr.hostport =
strcopy(util::make_hostport("localhost", get_config()->port));
auto path = addr.host.get();
auto pathlen = strlen(path);
if (pathlen + 1 > sizeof(addr.addr.su.un.sun_path)) {
LOG(FATAL) << "UNIX domain socket path " << path << " is too long > "
<< sizeof(addr.addr.su.un.sun_path);
exit(EXIT_FAILURE);
}
LOG(INFO) << "Use UNIX domain socket path " << path
<< " for backend connection";
addr.addr.su.un.sun_family = AF_UNIX;
// copy path including terminal NULL
std::copy_n(path, pathlen + 1, addr.addr.su.un.sun_path);
addr.addr.len = sizeof(addr.addr.su.un);
continue;
}
addr.hostport = strcopy(util::make_hostport(addr.host.get(), addr.port));
if (resolve_hostname(
&addr.addr, addr.host.get(), addr.port,
get_config()->backend_ipv4 ? AF_INET : (get_config()->backend_ipv6
? AF_INET6
: AF_UNSPEC)) == -1) {
exit(EXIT_FAILURE);
}
}
}
if (get_config()->downstream_http_proxy_host) {
if (LOG_ENABLED(INFO)) {
LOG(INFO) << "Resolving backend http proxy address";
}
if (resolve_hostname(&mod_config()->downstream_http_proxy_addr,
get_config()->downstream_http_proxy_host.get(),
get_config()->downstream_http_proxy_port,
AF_UNSPEC) == -1) {
exit(EXIT_FAILURE);
}
}
if (get_config()->session_cache_memcached_host) {
if (resolve_hostname(&mod_config()->session_cache_memcached_addr,
get_config()->session_cache_memcached_host.get(),
get_config()->session_cache_memcached_port,
AF_UNSPEC) == -1) {
exit(EXIT_FAILURE);
}
}
if (get_config()->tls_ticket_key_memcached_host) {
if (resolve_hostname(&mod_config()->tls_ticket_key_memcached_addr,
get_config()->tls_ticket_key_memcached_host.get(),
get_config()->tls_ticket_key_memcached_port,
AF_UNSPEC) == -1) {
exit(EXIT_FAILURE);
}
}
if (get_config()->rlimit_nofile) {
struct rlimit lim = {static_cast<rlim_t>(get_config()->rlimit_nofile),
static_cast<rlim_t>(get_config()->rlimit_nofile)};
if (setrlimit(RLIMIT_NOFILE, &lim) != 0) {
auto error = errno;
LOG(WARN) << "Setting rlimit-nofile failed: " << strerror(error);
}
}
if (get_config()->upstream_frame_debug) {
// To make it sync to logging
set_output(stderr);
if (isatty(fileno(stdout))) {
set_color_output(true);
}
reset_timer();
}
mod_config()->http2_upstream_callbacks = create_http2_upstream_callbacks();
mod_config()->http2_downstream_callbacks =
create_http2_downstream_callbacks();
if (event_loop() != 0) {
return -1;
}
LOG(NOTICE) << "Shutdown momentarily";
delete log_config();
return 0;
}
} // namespace shrpx
int main(int argc, char **argv) { return shrpx::main(argc, argv); }
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