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nghttpx: Longer help message

This commit is contained in:
Tatsuhiro Tsujikawa 2015-01-13 23:02:18 +09:00
parent 29d6cfae80
commit 0d614cf103
1 changed files with 316 additions and 337 deletions
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539
src/shrpx.cc
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@ -767,48 +767,48 @@ namespace {
void print_help(std::ostream &out) { void print_help(std::ostream &out) {
print_usage(out); print_usage(out);
out << R"( out << R"(
<PRIVATE_KEY> Set path to server's private key. Required <PRIVATE_KEY>
unless -p, --client or --frontend-no-tls are Set path to server's private key. Required unless -p,
given. --client or --frontend-no-tls are given.
<CERT> Set path to server's certificate. Required <CERT> Set path to server's certificate. Required unless -p,
unless -p, --client or --frontend-no-tls are --client or --frontend-no-tls are given.
given.
Options: Options:
The options are categorized into several groups. The options are categorized into several groups.
Connections: Connections:
-b, --backend=<HOST,PORT> -b, --backend=<HOST,PORT>
Set backend host and port. For HTTP/1 backend, Set backend host and port. For HTTP/1 backend, multiple
multiple backend addresses are accepted by backend addresses are accepted by repeating this option.
repeating this option. HTTP/2 backend does not HTTP/2 backend does not support multiple backend
support multiple backend addresses and the first addresses and the first occurrence of this option is
occurrence of this option is used. used.
Default: )" << DEFAULT_DOWNSTREAM_HOST << "," Default: )" << DEFAULT_DOWNSTREAM_HOST << ","
<< DEFAULT_DOWNSTREAM_PORT << R"( << DEFAULT_DOWNSTREAM_PORT << R"(
-f, --frontend=<HOST,PORT> -f, --frontend=<HOST,PORT>
Set frontend host and port. If <HOST> is '*', it Set frontend host and port. If <HOST> is '*', it
assumes all addresses including both IPv4 and assumes all addresses including both IPv4 and IPv6.
IPv6.
Default: )" << get_config()->host.get() << "," Default: )" << get_config()->host.get() << ","
<< get_config()->port << R"( << get_config()->port << R"(
--backlog=<N> Set listen backlog size. --backlog=<N>
Set listen backlog size.
Default: )" << get_config()->backlog << R"( Default: )" << get_config()->backlog << R"(
--backend-ipv4 Resolve backend hostname to IPv4 address only. --backend-ipv4
--backend-ipv6 Resolve backend hostname to IPv6 address only. Resolve backend hostname to IPv4 address only.
--backend-ipv6
Resolve backend hostname to IPv6 address only.
--backend-http-proxy-uri=<URI> --backend-http-proxy-uri=<URI>
Specify proxy URI in the form Specify proxy URI in the form
http://[<USER>:<PASS>@]<PROXY>:<PORT>. If a http://[<USER>:<PASS>@]<PROXY>:<PORT>. If a proxy
proxy requires authentication, specify <USER> and requires authentication, specify <USER> and <PASS>.
<PASS>. Note that they must be properly Note that they must be properly percent-encoded. This
percent-encoded. This proxy is used when the proxy is used when the backend connection is HTTP/2.
backend connection is HTTP/2. First, make a First, make a CONNECT request to the proxy and it
CONNECT request to the proxy and it connects to connects to the backend on behalf of nghttpx. This
the backend on behalf of nghttpx. This forms forms tunnel. After that, nghttpx performs SSL/TLS
tunnel. After that, nghttpx performs SSL/TLS handshake with the downstream through the tunnel. The
handshake with the downstream through the tunnel. timeouts when connecting and making CONNECT request can
The timeouts when connecting and making CONNECT be specified by --backend-read-timeout and
request can be specified by
--backend-read-timeout and
--backend-write-timeout options. --backend-write-timeout options.
Performance: Performance:
@ -816,374 +816,353 @@ Performance:
Set the number of worker threads. Set the number of worker threads.
Default: )" << get_config()->num_worker << R"( Default: )" << get_config()->num_worker << R"(
--read-rate=<SIZE> --read-rate=<SIZE>
Set maximum average read rate on frontend Set maximum average read rate on frontend connection.
connection. Setting 0 to this option means read Setting 0 to this option means read rate is unlimited.
rate is unlimited.
Default: )" << get_config()->read_rate << R"( Default: )" << get_config()->read_rate << R"(
--read-burst=<SIZE> --read-burst=<SIZE>
Set maximum read burst size on frontend Set maximum read burst size on frontend connection.
connection. Setting 0 to this option means read Setting 0 to this option means read burst size is
burst size is unlimited. unlimited.
Default: )" << get_config()->read_burst << R"( Default: )" << get_config()->read_burst << R"(
--write-rate=<SIZE> --write-rate=<SIZE>
Set maximum average write rate on frontend Set maximum average write rate on frontend connection.
connection. Setting 0 to this option means write Setting 0 to this option means write rate is unlimited.
rate is unlimited.
Default: )" << get_config()->write_rate << R"( Default: )" << get_config()->write_rate << R"(
--write-burst=<SIZE> --write-burst=<SIZE>
Set maximum write burst size on frontend Set maximum write burst size on frontend connection.
connection. Setting 0 to this option means write Setting 0 to this option means write burst size is
burst size is unlimited. unlimited.
Default: )" << get_config()->write_burst << R"( Default: )" << get_config()->write_burst << R"(
--worker-read-rate=<SIZE> --worker-read-rate=<SIZE>
Set maximum average read rate on frontend Set maximum average read rate on frontend connection per
connection per worker. Setting 0 to this option worker. Setting 0 to this option means read rate is
means read rate is unlimited. Not implemented unlimited. Not implemented yet.
yet.
Default: )" << get_config()->worker_read_rate << R"( Default: )" << get_config()->worker_read_rate << R"(
--worker-read-burst=<SIZE> --worker-read-burst=<SIZE>
Set maximum read burst size on frontend Set maximum read burst size on frontend connection per
connection per worker. Setting 0 to this option worker. Setting 0 to this option means read burst size
means read burst size is unlimited. Not is unlimited. Not implemented yet.
implemented yet.
Default: )" << get_config()->worker_read_burst << R"( Default: )" << get_config()->worker_read_burst << R"(
--worker-write-rate=<SIZE> --worker-write-rate=<SIZE>
Set maximum average write rate on frontend Set maximum average write rate on frontend connection
connection per worker. Setting 0 to this option per worker. Setting 0 to this option means write rate
means write rate is unlimited. Not implemented is unlimited. Not implemented yet.
yet.
Default: )" << get_config()->worker_write_rate << R"( Default: )" << get_config()->worker_write_rate << R"(
--worker-write-burst=<SIZE> --worker-write-burst=<SIZE>
Set maximum write burst size on frontend Set maximum write burst size on frontend connection per
connection per worker. Setting 0 to this option worker. Setting 0 to this option means write burst size
means write burst size is unlimited. Not is unlimited. Not implemented yet.
implemented yet.
Default: )" << get_config()->worker_write_burst << R"( Default: )" << get_config()->worker_write_burst << R"(
--worker-frontend-connections=<N> --worker-frontend-connections=<N>
Set maximum number of simultaneous connections Set maximum number of simultaneous connections frontend
frontend accepts. Setting 0 means unlimited. accepts. Setting 0 means unlimited.
Default: )" << get_config()->worker_frontend_connections Default: )" << get_config()->worker_frontend_connections << R"(
<< R"(
--backend-http1-connections-per-host=<N> --backend-http1-connections-per-host=<N>
Set maximum number of backend concurrent HTTP/1 Set maximum number of backend concurrent HTTP/1
connections per host. This option is meaningful connections per host. This option is meaningful when -s
when -s option is used. To limit the number of option is used. To limit the number of connections per
connections per frontend for default mode, use frontend for default mode, use
--backend-http1-connections-per-frontend. --backend-http1-connections-per-frontend.
Default: )" Default: )" << get_config()->downstream_connections_per_host
<< get_config()->downstream_connections_per_host << R"( << R"(
--backend-http1-connections-per-frontend=<N> --backend-http1-connections-per-frontend=<N>
Set maximum number of backend concurrent HTTP/1 Set maximum number of backend concurrent HTTP/1
connections per frontend. This option is only connections per frontend. This option is only used for
used for default mode. 0 means unlimited. To default mode. 0 means unlimited. To limit the number
limit the number of connections per host for of connections per host for HTTP/2 or SPDY proxy mode
HTTP/2 or SPDY proxy mode (-s option), use (-s option), use --backend-http1-connections-per-host.
--backend-http1-connections-per-host. Default: )" << get_config()->downstream_connections_per_frontend
Default: )" << R"(
<< get_config()->downstream_connections_per_frontend << R"(
--rlimit-nofile=<N> --rlimit-nofile=<N>
Set maximum number of open files (RLIMIT_NOFILE) Set maximum number of open files (RLIMIT_NOFILE) to <N>.
to <N>. If 0 is given, nghttpx does not set the If 0 is given, nghttpx does not set the limit.
limit.
Default: )" << get_config()->rlimit_nofile << R"( Default: )" << get_config()->rlimit_nofile << R"(
Timeout: Timeout:
--frontend-http2-read-timeout=<SEC> --frontend-http2-read-timeout=<SEC>
Specify read timeout for HTTP/2 and SPDY frontend Specify read timeout for HTTP/2 and SPDY frontend
connection. connection.
Default: )" << get_config()->http2_upstream_read_timeout Default: )" << get_config()->http2_upstream_read_timeout << R"(
<< R"(
--frontend-read-timeout=<SEC> --frontend-read-timeout=<SEC>
Specify read timeout for HTTP/1.1 frontend Specify read timeout for HTTP/1.1 frontend connection.
connection.
Default: )" << get_config()->upstream_read_timeout << R"( Default: )" << get_config()->upstream_read_timeout << R"(
--frontend-write-timeout=<SEC> --frontend-write-timeout=<SEC>
Specify write timeout for all frontend Specify write timeout for all frontend connections.
connections.
Default: )" << get_config()->upstream_write_timeout << R"( Default: )" << get_config()->upstream_write_timeout << R"(
--stream-read-timeout=<SEC> --stream-read-timeout=<SEC>
Specify read timeout for HTTP/2 and SPDY streams. Specify read timeout for HTTP/2 and SPDY streams. 0
0 means no timeout. means no timeout.
Default: )" << get_config()->stream_read_timeout << R"( Default: )" << get_config()->stream_read_timeout << R"(
--stream-write-timeout=<SEC> --stream-write-timeout=<SEC>
Specify write timeout for HTTP/2 and SPDY Specify write timeout for HTTP/2 and SPDY streams. 0
streams. 0 means no timeout. means no timeout.
Default: )" << get_config()->stream_write_timeout << R"( Default: )" << get_config()->stream_write_timeout << R"(
--backend-read-timeout=<SEC> --backend-read-timeout=<SEC>
Specify read timeout for backend connection. Specify read timeout for backend connection.
Default: )" << get_config()->downstream_read_timeout << R"( Default: )" << get_config()->downstream_read_timeout << R"(
--backend-write-timeout=<SEC> --backend-write-timeout=<SEC>
Specify write timeout for backend connection. Specify write timeout for backend connection.
Default: )" << get_config()->downstream_write_timeout Default: )" << get_config()->downstream_write_timeout << R"(
<< R"(
--backend-keep-alive-timeout=<SEC> --backend-keep-alive-timeout=<SEC>
Specify keep-alive timeout for backend Specify keep-alive timeout for backend connection.
connection. Default: )" << get_config()->downstream_idle_read_timeout << R"(
Default: )" << get_config()->downstream_idle_read_timeout
<< R"(
--listener-disable-timeout=<SEC> --listener-disable-timeout=<SEC>
After accepting connection failed, connection After accepting connection failed, connection listener
listener is disabled for a given time in seconds. is disabled for a given time in seconds. Specifying 0
Specifying 0 disables this feature. disables this feature.
Default: )" << get_config()->listener_disable_timeout Default: )" << get_config()->listener_disable_timeout << R"(
<< R"(
SSL/TLS: SSL/TLS:
--ciphers=<SUITE> Set allowed cipher list. The format of the --ciphers=<SUITE>
string is described in OpenSSL ciphers(1). Set allowed cipher list. The format of the string is
described in OpenSSL ciphers(1).
-k, --insecure -k, --insecure
Don't verify backend server's certificate if -p, Don't verify backend server's certificate if -p,
--client or --http2-bridge are given and --client or --http2-bridge are given and
--backend-no-tls is not given. --backend-no-tls is not given.
--cacert=<PATH> Set path to trusted CA certificate file if -p, --cacert=<PATH>
--client or --http2-bridge are given and Set path to trusted CA certificate file if -p, --client
--backend-no-tls is not given. The file must be or --http2-bridge are given and --backend-no-tls is not
in PEM format. It can contain multiple given. The file must be in PEM format. It can contain
certificates. If the linked OpenSSL is multiple certificates. If the linked OpenSSL is
configured to load system wide certificates, they configured to load system wide certificates, they are
are loaded at startup regardless of this option. loaded at startup regardless of this option.
--private-key-passwd-file=<PATH> --private-key-passwd-file=<PATH>
Path to file that contains password for the Path to file that contains password for the server's
server's private key. If none is given and the private key. If none is given and the private key is
private key is password protected it'll be password protected it'll be requested interactively.
requested interactively.
--subcert=<KEYPATH>:<CERTPATH> --subcert=<KEYPATH>:<CERTPATH>
Specify additional certificate and private key Specify additional certificate and private key file.
file. nghttpx will choose certificates based on nghttpx will choose certificates based on the hostname
the hostname indicated by client using TLS SNI indicated by client using TLS SNI extension. This
extension. This option can be used multiple option can be used multiple times.
times.
--backend-tls-sni-field=<HOST> --backend-tls-sni-field=<HOST>
Explicitly set the content of the TLS SNI Explicitly set the content of the TLS SNI extension.
extension. This will default to the backend HOST This will default to the backend HOST name.
name.
--dh-param-file=<PATH> --dh-param-file=<PATH>
Path to file that contains DH parameters in PEM Path to file that contains DH parameters in PEM format.
format. Without this option, DHE cipher suites Without this option, DHE cipher suites are not
are not available. available.
--npn-list=<LIST> Comma delimited list of ALPN protocol identifier --npn-list=<LIST>
sorted in the order of preference. That means Comma delimited list of ALPN protocol identifier sorted
most desirable protocol comes first. This is in the order of preference. That means most desirable
used in both ALPN and NPN. The parameter must be protocol comes first. This is used in both ALPN and
delimited by a single comma only and any white NPN. The parameter must be delimited by a single comma
spaces are treated as a part of protocol string. only and any white spaces are treated as a part of
protocol string.
Default: )" << DEFAULT_NPN_LIST << R"( Default: )" << DEFAULT_NPN_LIST << R"(
--verify-client Require and verify client certificate. --verify-client
Require and verify client certificate.
--verify-client-cacert=<PATH> --verify-client-cacert=<PATH>
Path to file that contains CA certificates to Path to file that contains CA certificates to verify
verify client certificate. The file must be in client certificate. The file must be in PEM format. It
PEM format. It can contain multiple can contain multiple certificates.
certificates.
--client-private-key-file=<PATH> --client-private-key-file=<PATH>
Path to file that contains client private key Path to file that contains client private key used in
used in backend client authentication. backend client authentication.
--client-cert-file=<PATH> --client-cert-file=<PATH>
Path to file that contains client certificate Path to file that contains client certificate used in
used in backend client authentication. backend client authentication.
--tls-proto-list=<LIST> --tls-proto-list=<LIST>
Comma delimited list of SSL/TLS protocol to be Comma delimited list of SSL/TLS protocol to be enabled.
enabled. The following protocols are available: The following protocols are available: TLSv1.2, TLSv1.1
TLSv1.2, TLSv1.1 and TLSv1.0. The name matching and TLSv1.0. The name matching is done in
is done in case-insensitive manner. The case-insensitive manner. The parameter must be
parameter must be delimited by a single comma delimited by a single comma only and any white spaces
only and any white spaces are treated as a part are treated as a part of protocol string.
of protocol string.
Default: )" << DEFAULT_TLS_PROTO_LIST << R"( Default: )" << DEFAULT_TLS_PROTO_LIST << R"(
--tls-ticket-key-file=<PATH> --tls-ticket-key-file=<PATH>
Path to file that contains 48 bytes random data Path to file that contains 48 bytes random data to
to construct TLS session ticket parameters. This construct TLS session ticket parameters. This options
options can be used repeatedly to specify can be used repeatedly to specify multiple ticket
multiple ticket parameters. If several files are parameters. If several files are given, only the first
given, only the first key is used to encrypt TLS key is used to encrypt TLS session tickets. Other keys
session tickets. Other keys are accepted but are accepted but server will issue new session ticket
server will issue new session ticket with first with first key. This allows session key rotation.
key. This allows session key rotation. Please Please note that key rotation does not occur
note that key rotation does not occur automatically. User should rearrange files or change
automatically. User should rearrange files or options values and restart nghttpx gracefully. If
change options values and restart nghttpx opening or reading given file fails, all loaded keys are
gracefully. If opening or reading given file discarded and it is treated as if none of this option is
fails, all loaded keys are discarded and it is given. If this option is not given or an error occurred
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 while opening or reading a file, key is generated
automatically and renewed every 12hrs. At most 2 automatically and renewed every 12hrs. At most 2 keys
keys are stored in memory. are stored in memory.
--tls-ctx-per-worker --tls-ctx-per-worker
Create OpenSSL's SSL_CTX per worker, so that no Create OpenSSL's SSL_CTX per worker, so that no internal
internal locking is required. This may improve locking is required. This may improve scalability with
scalability with multi threaded configuration. multi threaded configuration. If this option is
If this option is enabled, session ID is no enabled, session ID is no longer shared accross SSL_CTX
longer shared accross SSL_CTX objects, which objects, which means session ID generated by one worker
means session ID generated by one worker is not is not acceptable by another worker. On the other hand,
acceptable by another worker. On the other hand, session ticket key is shared across all worker threads.
session ticket key is shared across all worker
threads.
HTTP/2 and SPDY: HTTP/2 and SPDY:
-c, --http2-max-concurrent-streams=<N> -c, --http2-max-concurrent-streams=<N>
Set the maximum number of the concurrent streams Set the maximum number of the concurrent streams in one
in one HTTP/2 and SPDY session. HTTP/2 and SPDY session.
Default: )" << get_config()->http2_max_concurrent_streams Default: )" << get_config()->http2_max_concurrent_streams << R"(
<< R"(
--frontend-http2-window-bits=<N> --frontend-http2-window-bits=<N>
Sets the per-stream initial window size of HTTP/2 Sets the per-stream initial window size of HTTP/2 SPDY
SPDY frontend connection. For HTTP/2, the size frontend connection. For HTTP/2, the size is 2**<N>-1.
is 2**<N>-1. For SPDY, the size is 2**<N>. For SPDY, the size is 2**<N>.
Default: )" << get_config()->http2_upstream_window_bits Default: )" << get_config()->http2_upstream_window_bits << R"(
<< R"(
--frontend-http2-connection-window-bits=<N> --frontend-http2-connection-window-bits=<N>
Sets the per-connection window size of HTTP/2 and Sets the per-connection window size of HTTP/2 and SPDY
SPDY frontend connection. For HTTP/2, the size frontend connection. For HTTP/2, the size is
is 2**<N>-1. For SPDY, the size is 2**<N>. 2**<N>-1. For SPDY, the size is 2**<N>.
Default: )" Default: )" << get_config()->http2_upstream_connection_window_bits
<< get_config()->http2_upstream_connection_window_bits << R"( << R"(
--frontend-no-tls Disable SSL/TLS on frontend connections. --frontend-no-tls
Disable SSL/TLS on frontend connections.
--backend-http2-window-bits=<N> --backend-http2-window-bits=<N>
Sets the initial window size of HTTP/2 backend Sets the initial window size of HTTP/2 backend
connection to 2**<N>-1. connection to 2**<N>-1.
Default: )" << get_config()->http2_downstream_window_bits Default: )" << get_config()->http2_downstream_window_bits << R"(
<< R"(
--backend-http2-connection-window-bits=<N> --backend-http2-connection-window-bits=<N>
Sets the per-connection window size of HTTP/2 Sets the per-connection window size of HTTP/2 backend
backend connection to 2**<N>-1. connection to 2**<N>-1.
Default: )" Default: )"
<< get_config()->http2_downstream_connection_window_bits << R"( << get_config()->http2_downstream_connection_window_bits << R"(
--backend-no-tls Disable SSL/TLS on backend connections. --backend-no-tls
Disable SSL/TLS on backend connections.
--http2-no-cookie-crumbling --http2-no-cookie-crumbling
Don't crumble cookie header field. Don't crumble cookie header field.
--padding=<N> Add at most <N> bytes to a HTTP/2 frame payload --padding=<N>
as padding. Specify 0 to disable padding. This Add at most <N> bytes to a HTTP/2 frame payload as
option is meant for debugging purpose and not padding. Specify 0 to disable padding. This option is
intended to enhance protocol security. meant for debugging purpose and not intended to enhance
protocol security.
Mode: Mode:
(default mode) Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. (default mode)
If --frontend-no-tls is used, accept HTTP/2 and Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. If
HTTP/1.1. The incoming HTTP/1.1 connection can --frontend-no-tls is used, accept HTTP/2 and HTTP/1.1.
be upgraded to HTTP/2 through HTTP Upgrade. The The incoming HTTP/1.1 connection can be upgraded to
protocol to the backend is HTTP/1.1. HTTP/2 through HTTP Upgrade. The protocol to the
-s, --http2-proxy Like default mode, but enable secure proxy mode. backend is HTTP/1.1.
--http2-bridge Like default mode, but communicate with the -s, --http2-proxy
backend in HTTP/2 over SSL/TLS. Thus the Like default mode, but enable secure proxy mode.
incoming all connections are converted to HTTP/2 --http2-bridge
connection and relayed to the backend. See Like default mode, but communicate with the backend in
--backend-http-proxy-uri option if you are behind HTTP/2 over SSL/TLS. Thus the incoming all connections
the proxy and want to connect to the outside 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. HTTP/2 proxy.
--client Accept HTTP/2 and HTTP/1.1 without SSL/TLS. The --client Accept HTTP/2 and HTTP/1.1 without SSL/TLS. The
incoming HTTP/1.1 connection can be upgraded to incoming HTTP/1.1 connection can be upgraded to HTTP/2
HTTP/2 connection through HTTP Upgrade. The connection through HTTP Upgrade. The protocol to the
protocol to the backend is HTTP/2. To use backend is HTTP/2. To use nghttpx as a forward proxy,
nghttpx as a forward proxy, use -p option use -p option instead.
instead.
-p, --client-proxy -p, --client-proxy
Like --client option, but it also requires the Like --client option, but it also requires the request
request path from frontend must be an absolute path from frontend must be an absolute URI, suitable for
URI, suitable for use as a forward proxy. use as a forward proxy.
Logging: Logging:
-L, --log-level=<LEVEL> -L, --log-level=<LEVEL>
Set the severity level of log output. <LEVEL> Set the severity level of log output. <LEVEL> must be
must be one of INFO, NOTICE, WARN, ERROR and one of INFO, NOTICE, WARN, ERROR and FATAL.
FATAL.
Default: NOTICE Default: NOTICE
--accesslog-file=<PATH> --accesslog-file=<PATH>
Set path to write access log. To reopen file, Set path to write access log. To reopen file, send USR1
send USR1 signal to nghttpx. signal to nghttpx.
--accesslog-syslog --accesslog-syslog
Send access log to syslog. If this option is Send access log to syslog. If this option is used,
used, --accesslog-file option is ignored. --accesslog-file option is ignored.
--accesslog-format=<FORMAT> --accesslog-format=<FORMAT>
Specify format string for access log. The Specify format string for access log. The default
default format is combined format. The following format is combined format. The following variables are
variables are available: available:
* $remote_addr: client IP address. * $remote_addr: client IP address.
* $time_local: local time in Common Log format. * $time_local: local time in Common Log format.
* $time_iso8601: local time in ISO 8601 format. * $time_iso8601: local time in ISO 8601 format.
* $request: HTTP request line. * $request: HTTP request line.
* $status: HTTP response status code. * $status: HTTP response status code.
* $body_bytes_sent: the number of bytes sent to * $body_bytes_sent: the number of bytes sent to client
client as response body. as response body.
* $http_<VAR>: value of HTTP request header <VAR> * $http_<VAR>: value of HTTP request header <VAR> where
where '_' in <VAR> is replaced with '-'. '_' in <VAR> is replaced with '-'.
* $remote_port: client port. * $remote_port: client port.
* $server_port: server port. * $server_port: server port.
* $request_time: request processing time in * $request_time: request processing time in seconds with
seconds with milliseconds resolution. milliseconds resolution.
* $pid: PID of the running process. * $pid: PID of the running process.
* $alpn: ALPN identifier of the protocol which * $alpn: ALPN identifier of the protocol which generates
generates the response. For HTTP/1, ALPN is the response. For HTTP/1, ALPN is always http/1.1,
always http/1.1, regardless of minor version. regardless of minor version.
Default: )" << DEFAULT_ACCESSLOG_FORMAT << R"( Default: )" << DEFAULT_ACCESSLOG_FORMAT << R"(
--errorlog-file=<PATH> --errorlog-file=<PATH>
Set path to write error log. To reopen file, Set path to write error log. To reopen file, send USR1
send USR1 signal to nghttpx. signal to nghttpx.
Default: )" << get_config()->errorlog_file.get() << R"( Default: )" << get_config()->errorlog_file.get() << R"(
--errorlog-syslog Send error log to syslog. If this option is --errorlog-syslog
used, --errorlog-file option is ignored. Send error log to syslog. If this option is used,
--errorlog-file option is ignored.
--syslog-facility=<FACILITY> --syslog-facility=<FACILITY>
Set syslog facility to <FACILITY>. Set syslog facility to <FACILITY>.
Default: )" Default: )" << str_syslog_facility(get_config()->syslog_facility)
<< str_syslog_facility(get_config()->syslog_facility) << R"( << R"(
Misc: Misc:
--add-x-forwarded-for --add-x-forwarded-for
Append X-Forwarded-For header field to the Append X-Forwarded-For header field to the downstream
downstream request. request.
--strip-incoming-x-forwarded-for --strip-incoming-x-forwarded-for
Strip X-Forwarded-For header field from inbound Strip X-Forwarded-For header field from inbound client
client requests. requests.
--no-via Don't append to Via header field. If Via header --no-via Don't append to Via header field. If Via header field
field is received, it is left unaltered. is received, it is left unaltered.
--no-location-rewrite --no-location-rewrite
Don't rewrite location header field on Don't rewrite location header field on --http2-bridge,
--http2-bridge, --client and default mode. For --client and default mode. For --http2-proxy and
--http2-proxy and --client-proxy mode, location --client-proxy mode, location header field will not be
header field will not be altered regardless of altered regardless of this option.
this option.
--altsvc=<PROTOID,PORT[,HOST,[ORIGIN]]> --altsvc=<PROTOID,PORT[,HOST,[ORIGIN]]>
Specify protocol ID, port, host and origin of Specify protocol ID, port, host and origin of
alternative service. <HOST> and <ORIGIN> are alternative service. <HOST> and <ORIGIN> are optional.
optional. They are advertised in alt-svc header They are advertised in alt-svc header field or HTTP/2
field or HTTP/2 ALTSVC frame. This option can be ALTSVC frame. This option can be used multiple times to
used multiple times to specify multiple specify multiple alternative services. Example:
alternative services. Example: --altsvc=h2,443 --altsvc=h2,443
--add-response-header=<HEADER> --add-response-header=<HEADER>
Specify additional header field to add to Specify additional header field to add to response
response header set. This option just appends header set. This option just appends header field and
header field and won't replace anything already won't replace anything already set. This option can be
set. This option can be used several times to used several times to specify multiple header fields.
specify multiple header fields.
Example: --add-response-header="foo: bar" Example: --add-response-header="foo: bar"
--frontend-http2-dump-request-header=<PATH> --frontend-http2-dump-request-header=<PATH>
Dumps request headers received by HTTP/2 frontend Dumps request headers received by HTTP/2 frontend to the
to the file denoted in <PATH>. The output is file denoted in <PATH>. The output is done in HTTP/1
done in HTTP/1 header field format and each header field format and each header block is followed by
header block is followed by an empty line. This an empty line. This option is not thread safe and MUST
option is not thread safe and MUST NOT be used NOT be used with option -n<N>, where <N> >= 2.
with option -n<N>, where <N> >= 2.
--frontend-http2-dump-response-header=<PATH> --frontend-http2-dump-response-header=<PATH>
Dumps response headers sent from HTTP/2 frontend Dumps response headers sent from HTTP/2 frontend to the
to the file denoted in <PATH>. The output is file denoted in <PATH>. The output is done in HTTP/1
done in HTTP/1 header field format and each header field format and each header block is followed by
header block is followed by an empty line. This an empty line. This option is not thread safe and MUST
option is not thread safe and MUST NOT be used NOT be used with option -n<N>, where <N> >= 2.
with option -n<N>, where <N> >= 2.
-o, --frontend-frame-debug -o, --frontend-frame-debug
Print HTTP/2 frames in frontend to stderr. This Print HTTP/2 frames in frontend to stderr. This option
option is not thread safe and MUST NOT be used is not thread safe and MUST NOT be used with option
with option -n=N, where N >= 2. -n=N, where N >= 2.
-D, --daemon -D, --daemon
Run in a background. If -D is used, the current Run in a background. If -D is used, the current working
working directory is changed to '/'. directory is changed to '/'.
--pid-file=<PATH> Set path to save PID of this program. --pid-file=<PATH>
--user=<USER> Run this program as <USER>. This option is Set path to save PID of this program.
intended to be used to drop root privileges. --user=<USER>
--conf=<PATH> Load configuration from <PATH>. Run this program as <USER>. This option is intended to
be used to drop root privileges.
--conf=<PATH>
Load configuration from <PATH>.
Default: )" << get_config()->conf_path.get() << R"( Default: )" << get_config()->conf_path.get() << R"(
-v, --version Print version and exit. -v, --version
Print version and exit.
-h, --help Print this help and exit. -h, --help Print this help and exit.
The <SIZE> argument is an integer and an optional unit (e.g., 10K is The <SIZE> argument is an integer and an optional unit (e.g., 10K is