2268 lines
74 KiB
Groff
2268 lines
74 KiB
Groff
.\" Man page generated from reStructuredText.
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.TH "NGHTTPX" "1" "Sep 20, 2017" "1.26.0" "nghttp2"
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.SH NAME
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nghttpx \- HTTP/2 proxy
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.
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..
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..
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.SH SYNOPSIS
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.sp
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\fBnghttpx\fP [OPTIONS]... [<PRIVATE_KEY> <CERT>]
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.SH DESCRIPTION
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.sp
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A reverse proxy for HTTP/2, HTTP/1 and SPDY.
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.INDENT 0.0
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.TP
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.B <PRIVATE_KEY>
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Set path to server\(aqs private key. Required unless
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"no\-tls" parameter is used in \fI\%\-\-frontend\fP option.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B <CERT>
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Set path to server\(aqs certificate. Required unless
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"no\-tls" parameter is used in \fI\%\-\-frontend\fP option. To
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make OCSP stapling work, this must be an absolute path.
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.UNINDENT
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.SH OPTIONS
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.sp
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The options are categorized into several groups.
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.SS Connections
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.INDENT 0.0
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.TP
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.B \-b, \-\-backend=(<HOST>,<PORT>|unix:<PATH>)[;[<PATTERN>[:...]][[;<PARAM>]...]
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Set backend host and port. The multiple backend
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addresses are accepted by repeating this option. UNIX
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domain socket can be specified by prefixing path name
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with "unix:" (e.g., unix:/var/run/backend.sock).
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.sp
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Optionally, if <PATTERN>s are given, the backend address
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is only used if request matches the pattern. The
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pattern matching is closely designed to ServeMux in
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net/http package of Go programming language. <PATTERN>
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consists of path, host + path or just host. The path
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must start with "\fI/\fP". If it ends with "\fI/\fP", it matches
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all request path in its subtree. To deal with the
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request to the directory without trailing slash, the
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path which ends with "\fI/\fP" also matches the request path
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which only lacks trailing \(aq\fI/\fP\(aq (e.g., path "\fI/foo/\fP"
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matches request path "\fI/foo\fP"). If it does not end with
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"\fI/\fP", it performs exact match against the request path.
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If host is given, it performs a match against the
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request host. For a request received on the frontend
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lister with "sni\-fwd" parameter enabled, SNI host is
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used instead of a request host. If host alone is given,
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"\fI/\fP" is appended to it, so that it matches all request
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paths under the host (e.g., specifying "nghttp2.org"
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equals to "nghttp2.org/"). CONNECT method is treated
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specially. It does not have path, and we don\(aqt allow
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empty path. To workaround this, we assume that CONNECT
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method has "\fI/\fP" as path.
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.sp
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Patterns with host take precedence over patterns with
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just path. Then, longer patterns take precedence over
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shorter ones.
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.sp
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Host can include "*" in the left most position to
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indicate wildcard match (only suffix match is done).
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The "*" must match at least one character. For example,
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host pattern "*.nghttp2.org" matches against
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"www.nghttp2.org" and "git.ngttp2.org", but does not
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match against "nghttp2.org". The exact hosts match
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takes precedence over the wildcard hosts match.
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.sp
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If path part ends with "*", it is treated as wildcard
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path. The wildcard path behaves differently from the
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normal path. For normal path, match is made around the
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boundary of path component separator,"\fI/\fP". On the other
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hand, the wildcard path does not take into account the
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path component separator. All paths which include the
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wildcard path without last "*" as prefix, and are
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strictly longer than wildcard path without last "*" are
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matched. "*" must match at least one character. For
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example, the pattern "\fI/foo*\fP" matches "\fI/foo/\fP" and
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"\fI/foobar\fP". But it does not match "\fI/foo\fP", or "\fI/fo\fP".
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.sp
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If <PATTERN> is omitted or empty string, "\fI/\fP" is used as
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pattern, which matches all request paths (catch\-all
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pattern). The catch\-all backend must be given.
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.sp
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When doing a match, nghttpx made some normalization to
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pattern, request host and path. For host part, they are
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converted to lower case. For path part, percent\-encoded
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unreserved characters defined in RFC 3986 are decoded,
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and any dot\-segments (".." and ".") are resolved and
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removed.
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.sp
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For example, \fI\%\-b\fP\(aq127.0.0.1,8080;nghttp2.org/httpbin/\(aq
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matches the request host "nghttp2.org" and the request
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path "\fI/httpbin/get\fP", but does not match the request host
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"nghttp2.org" and the request path "\fI/index.html\fP".
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.sp
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The multiple <PATTERN>s can be specified, delimiting
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them by ":". Specifying
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\fI\%\-b\fP\(aq127.0.0.1,8080;nghttp2.org:www.nghttp2.org\(aq has the
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same effect to specify \fI\%\-b\fP\(aq127.0.0.1,8080;nghttp2.org\(aq
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and \fI\%\-b\fP\(aq127.0.0.1,8080;www.nghttp2.org\(aq.
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.sp
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The backend addresses sharing same <PATTERN> are grouped
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together forming load balancing group.
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.sp
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Several parameters <PARAM> are accepted after <PATTERN>.
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The parameters are delimited by ";". The available
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parameters are: "proto=<PROTO>", "tls",
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"sni=<SNI_HOST>", "fall=<N>", "rise=<N>",
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"affinity=<METHOD>", "dns", and "redirect\-if\-not\-tls".
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The parameter consists of keyword, and optionally
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followed by "=" and value. For example, the parameter
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"proto=h2" consists of the keyword "proto" and value
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"h2". The parameter "tls" consists of the keyword "tls"
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without value. Each parameter is described as follows.
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.sp
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The backend application protocol can be specified using
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optional "proto" parameter, and in the form of
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"proto=<PROTO>". <PROTO> should be one of the following
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list without quotes: "h2", "http/1.1". The default
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value of <PROTO> is "http/1.1". Note that usually "h2"
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refers to HTTP/2 over TLS. But in this option, it may
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mean HTTP/2 over cleartext TCP unless "tls" keyword is
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used (see below).
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.sp
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TLS can be enabled by specifying optional "tls"
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parameter. TLS is not enabled by default.
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.sp
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With "sni=<SNI_HOST>" parameter, it can override the TLS
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SNI field value with given <SNI_HOST>. This will
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default to the backend <HOST> name
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.sp
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The feature to detect whether backend is online or
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offline can be enabled using optional "fall" and "rise"
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parameters. Using "fall=<N>" parameter, if nghttpx
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cannot connect to a this backend <N> times in a row,
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this backend is assumed to be offline, and it is
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excluded from load balancing. If <N> is 0, this backend
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never be excluded from load balancing whatever times
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nghttpx cannot connect to it, and this is the default.
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There is also "rise=<N>" parameter. After backend was
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excluded from load balancing group, nghttpx periodically
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attempts to make a connection to the failed backend, and
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if the connection is made successfully <N> times in a
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row, the backend is assumed to be online, and it is now
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eligible for load balancing target. If <N> is 0, a
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backend is permanently offline, once it goes in that
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state, and this is the default behaviour.
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.sp
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The session affinity is enabled using
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"affinity=<METHOD>" parameter. If "ip" is given in
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<METHOD>, client IP based session affinity is enabled.
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If "none" is given in <METHOD>, session affinity is
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disabled, and this is the default. The session affinity
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is enabled per <PATTERN>. If at least one backend has
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"affinity" parameter, and its <METHOD> is not "none",
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session affinity is enabled for all backend servers
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sharing the same <PATTERN>. It is advised to set
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"affinity" parameter to all backend explicitly if
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session affinity is desired. The session affinity may
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break if one of the backend gets unreachable, or backend
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settings are reloaded or replaced by API.
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.sp
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By default, name resolution of backend host name is done
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at start up, or reloading configuration. If "dns"
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parameter is given, name resolution takes place
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dynamically. This is useful if backend address changes
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frequently. If "dns" is given, name resolution of
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backend host name at start up, or reloading
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configuration is skipped.
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.sp
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If "redirect\-if\-not\-tls" parameter is used, the matched
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backend requires that frontend connection is TLS
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encrypted. If it isn\(aqt, nghttpx responds to the request
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with 308 status code, and https URI the client should
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use instead is included in Location header field. The
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port number in redirect URI is 443 by default, and can
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be changed using \fI\%\-\-redirect\-https\-port\fP option. If at
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least one backend has "redirect\-if\-not\-tls" parameter,
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this feature is enabled for all backend servers sharing
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the same <PATTERN>. It is advised to set
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"redirect\-if\-no\-tls" parameter to all backends
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explicitly if this feature is desired.
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.sp
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Since ";" and ":" are used as delimiter, <PATTERN> must
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not contain these characters. Since ";" has special
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meaning in shell, the option value must be quoted.
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.sp
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Default: \fB127.0.0.1,80\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-f, \-\-frontend=(<HOST>,<PORT>|unix:<PATH>)[[;<PARAM>]...]
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Set frontend host and port. If <HOST> is \(aq*\(aq, it
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assumes all addresses including both IPv4 and IPv6.
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UNIX domain socket can be specified by prefixing path
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name with "unix:" (e.g., unix:/var/run/nghttpx.sock).
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This option can be used multiple times to listen to
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multiple addresses.
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.sp
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This option can take 0 or more parameters, which are
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described below. Note that "api" and "healthmon"
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parameters are mutually exclusive.
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.sp
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Optionally, TLS can be disabled by specifying "no\-tls"
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parameter. TLS is enabled by default.
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.sp
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If "sni\-fwd" parameter is used, when performing a match
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to select a backend server, SNI host name received from
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the client is used instead of the request host. See
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\fI\%\-\-backend\fP option about the pattern match.
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.sp
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To make this frontend as API endpoint, specify "api"
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parameter. This is disabled by default. It is
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important to limit the access to the API frontend.
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Otherwise, someone may change the backend server, and
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break your services, or expose confidential information
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to the outside the world.
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.sp
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To make this frontend as health monitor endpoint,
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specify "healthmon" parameter. This is disabled by
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default. Any requests which come through this address
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are replied with 200 HTTP status, without no body.
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.sp
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To accept PROXY protocol version 1 on frontend
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connection, specify "proxyproto" parameter. This is
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disabled by default.
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.sp
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Default: \fB*,3000\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-backlog=<N>
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Set listen backlog size.
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.sp
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Default: \fB65536\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-backend\-address\-family=(auto|IPv4|IPv6)
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Specify address family of backend connections. If
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"auto" is given, both IPv4 and IPv6 are considered. If
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"IPv4" is given, only IPv4 address is considered. If
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"IPv6" is given, only IPv6 address is considered.
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.sp
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Default: \fBauto\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-backend\-http\-proxy\-uri=<URI>
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Specify proxy URI in the form
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\fI\%http:/\fP/[<USER>:<PASS>@]<PROXY>:<PORT>. If a proxy
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requires authentication, specify <USER> and <PASS>.
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Note that they must be properly percent\-encoded. This
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proxy is used when the backend connection is HTTP/2.
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First, make a CONNECT request to the proxy and it
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connects to the backend on behalf of nghttpx. This
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forms tunnel. After that, nghttpx performs SSL/TLS
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handshake with the downstream through the tunnel. The
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timeouts when connecting and making CONNECT request can
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be specified by \fI\%\-\-backend\-read\-timeout\fP and
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\fI\%\-\-backend\-write\-timeout\fP options.
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.UNINDENT
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.SS Performance
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.INDENT 0.0
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.TP
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.B \-n, \-\-workers=<N>
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Set the number of worker threads.
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.sp
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Default: \fB1\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-single\-thread
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Run everything in one thread inside the worker process.
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This feature is provided for better debugging
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experience, or for the platforms which lack thread
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support. If threading is disabled, this option is
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always enabled.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-read\-rate=<SIZE>
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Set maximum average read rate on frontend connection.
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Setting 0 to this option means read rate is unlimited.
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.sp
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Default: \fB0\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-read\-burst=<SIZE>
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Set maximum read burst size on frontend connection.
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Setting 0 to this option means read burst size is
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unlimited.
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.sp
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Default: \fB0\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-write\-rate=<SIZE>
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Set maximum average write rate on frontend connection.
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Setting 0 to this option means write rate is unlimited.
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.sp
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Default: \fB0\fP
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.UNINDENT
|
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.INDENT 0.0
|
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.TP
|
|
.B \-\-write\-burst=<SIZE>
|
|
Set maximum write burst size on frontend connection.
|
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Setting 0 to this option means write burst size is
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unlimited.
|
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.sp
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|
Default: \fB0\fP
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.UNINDENT
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.INDENT 0.0
|
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.TP
|
|
.B \-\-worker\-read\-rate=<SIZE>
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|
Set maximum average read rate on frontend connection per
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worker. Setting 0 to this option means read rate is
|
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unlimited. Not implemented yet.
|
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.sp
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|
Default: \fB0\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-worker\-read\-burst=<SIZE>
|
|
Set maximum read burst size on frontend connection per
|
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worker. Setting 0 to this option means read burst size
|
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is unlimited. Not implemented yet.
|
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.sp
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|
Default: \fB0\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
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.sp
|
|
Default: \fB0\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-worker\-frontend\-connections=<N>
|
|
Set maximum number of simultaneous connections frontend
|
|
accepts. Setting 0 means unlimited.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-connections\-per\-host=<N>
|
|
Set maximum number of backend concurrent connections
|
|
(and/or streams in case of HTTP/2) per origin host.
|
|
This option is meaningful when \fI\%\-\-http2\-proxy\fP option is
|
|
used. The origin host is determined by authority
|
|
portion of request URI (or :authority header field for
|
|
HTTP/2). To limit the number of connections per
|
|
frontend for default mode, use
|
|
\fI\%\-\-backend\-connections\-per\-frontend\fP\&.
|
|
.sp
|
|
Default: \fB8\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-connections\-per\-frontend=<N>
|
|
Set maximum number of backend concurrent connections
|
|
(and/or streams in case of HTTP/2) per frontend. This
|
|
option is only used for default mode. 0 means
|
|
unlimited. To limit the number of connections per host
|
|
with \fI\%\-\-http2\-proxy\fP option, use
|
|
\fI\%\-\-backend\-connections\-per\-host\fP\&.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-rlimit\-nofile=<N>
|
|
Set maximum number of open files (RLIMIT_NOFILE) to <N>.
|
|
If 0 is given, nghttpx does not set the limit.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-request\-buffer=<SIZE>
|
|
Set buffer size used to store backend request.
|
|
.sp
|
|
Default: \fB16K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-response\-buffer=<SIZE>
|
|
Set buffer size used to store backend response.
|
|
.sp
|
|
Default: \fB128K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-kqueue
|
|
Don\(aqt use kqueue. This option is only applicable for
|
|
the platforms which have kqueue. For other platforms,
|
|
this option will be simply ignored.
|
|
.UNINDENT
|
|
.SS Timeout
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-read\-timeout=<DURATION>
|
|
Specify read timeout for HTTP/2 and SPDY frontend
|
|
connection.
|
|
.sp
|
|
Default: \fB3m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-read\-timeout=<DURATION>
|
|
Specify read timeout for HTTP/1.1 frontend connection.
|
|
.sp
|
|
Default: \fB1m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-write\-timeout=<DURATION>
|
|
Specify write timeout for all frontend connections.
|
|
.sp
|
|
Default: \fB30s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-keep\-alive\-timeout=<DURATION>
|
|
Specify keep\-alive timeout for frontend HTTP/1
|
|
connection.
|
|
.sp
|
|
Default: \fB1m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-stream\-read\-timeout=<DURATION>
|
|
Specify read timeout for HTTP/2 and SPDY streams. 0
|
|
means no timeout.
|
|
.sp
|
|
Default: \fB0\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-stream\-write\-timeout=<DURATION>
|
|
Specify write timeout for HTTP/2 and SPDY streams. 0
|
|
means no timeout.
|
|
.sp
|
|
Default: \fB1m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-read\-timeout=<DURATION>
|
|
Specify read timeout for backend connection.
|
|
.sp
|
|
Default: \fB1m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-write\-timeout=<DURATION>
|
|
Specify write timeout for backend connection.
|
|
.sp
|
|
Default: \fB30s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-connect\-timeout=<DURATION>
|
|
Specify timeout before establishing TCP connection to
|
|
backend.
|
|
.sp
|
|
Default: \fB30s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-keep\-alive\-timeout=<DURATION>
|
|
Specify keep\-alive timeout for backend HTTP/1
|
|
connection.
|
|
.sp
|
|
Default: \fB2s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-listener\-disable\-timeout=<DURATION>
|
|
After accepting connection failed, connection listener
|
|
is disabled for a given amount of time. Specifying 0
|
|
disables this feature.
|
|
.sp
|
|
Default: \fB30s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-setting\-timeout=<DURATION>
|
|
Specify timeout before SETTINGS ACK is received from
|
|
client.
|
|
.sp
|
|
Default: \fB10s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-settings\-timeout=<DURATION>
|
|
Specify timeout before SETTINGS ACK is received from
|
|
backend server.
|
|
.sp
|
|
Default: \fB10s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-max\-backoff=<DURATION>
|
|
Specify maximum backoff interval. This is used when
|
|
doing health check against offline backend (see "fail"
|
|
parameter in \fI\%\-\-backend\fP option). It is also used to
|
|
limit the maximum interval to temporarily disable
|
|
backend when nghttpx failed to connect to it. These
|
|
intervals are calculated using exponential backoff, and
|
|
consecutive failed attempts increase the interval. This
|
|
option caps its maximum value.
|
|
.sp
|
|
Default: \fB2m\fP
|
|
.UNINDENT
|
|
.SS SSL/TLS
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-ciphers=<SUITE>
|
|
Set allowed cipher list for frontend connection. The
|
|
format of the string is described in OpenSSL ciphers(1).
|
|
.sp
|
|
Default: \fBECDHE\-ECDSA\-AES256\-GCM\-SHA384:ECDHE\-RSA\-AES256\-GCM\-SHA384:ECDHE\-ECDSA\-CHACHA20\-POLY1305:ECDHE\-RSA\-CHACHA20\-POLY1305:ECDHE\-ECDSA\-AES128\-GCM\-SHA256:ECDHE\-RSA\-AES128\-GCM\-SHA256:ECDHE\-ECDSA\-AES256\-SHA384:ECDHE\-RSA\-AES256\-SHA384:ECDHE\-ECDSA\-AES128\-SHA256:ECDHE\-RSA\-AES128\-SHA256\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client\-ciphers=<SUITE>
|
|
Set allowed cipher list for backend connection. The
|
|
format of the string is described in OpenSSL ciphers(1).
|
|
.sp
|
|
Default: \fBECDHE\-ECDSA\-AES256\-GCM\-SHA384:ECDHE\-RSA\-AES256\-GCM\-SHA384:ECDHE\-ECDSA\-CHACHA20\-POLY1305:ECDHE\-RSA\-CHACHA20\-POLY1305:ECDHE\-ECDSA\-AES128\-GCM\-SHA256:ECDHE\-RSA\-AES128\-GCM\-SHA256:ECDHE\-ECDSA\-AES256\-SHA384:ECDHE\-RSA\-AES256\-SHA384:ECDHE\-ECDSA\-AES128\-SHA256:ECDHE\-RSA\-AES128\-SHA256\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-ecdh\-curves=<LIST>
|
|
Set supported curve list for frontend connections.
|
|
<LIST> is a colon separated list of curve NID or names
|
|
in the preference order. The supported curves depend on
|
|
the linked OpenSSL library. This function requires
|
|
OpenSSL >= 1.0.2.
|
|
.sp
|
|
Default: \fBX25519:P\-256:P\-384:P\-521\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-k, \-\-insecure
|
|
Don\(aqt verify backend server\(aqs certificate if TLS is
|
|
enabled for backend connections.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-cacert=<PATH>
|
|
Set path to trusted CA certificate file. It is used in
|
|
backend TLS connections to verify peer\(aqs certificate.
|
|
It is also used to verify OCSP response from the script
|
|
set by \fI\%\-\-fetch\-ocsp\-response\-file\fP\&. 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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-private\-key\-passwd\-file=<PATH>
|
|
Path to file that contains password for the server\(aqs
|
|
private key. If none is given and the private key is
|
|
password protected it\(aqll be requested interactively.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-subcert=<KEYPATH>:<CERTPATH>[[;<PARAM>]...]
|
|
Specify additional certificate and private key file.
|
|
nghttpx will choose certificates based on the hostname
|
|
indicated by client using TLS SNI extension. If nghttpx
|
|
is built with OpenSSL >= 1.0.2, the shared elliptic
|
|
curves (e.g., P\-256) between client and server are also
|
|
taken into consideration. This allows nghttpx to send
|
|
ECDSA certificate to modern clients, while sending RSA
|
|
based certificate to older clients. This option can be
|
|
used multiple times. To make OCSP stapling work,
|
|
<CERTPATH> must be absolute path.
|
|
.sp
|
|
Additional parameter can be specified in <PARAM>. The
|
|
available <PARAM> is "sct\-dir=<DIR>".
|
|
.sp
|
|
"sct\-dir=<DIR>" specifies the path to directory which
|
|
contains *.sct files for TLS
|
|
signed_certificate_timestamp extension (RFC 6962). This
|
|
feature requires OpenSSL >= 1.0.2. See also
|
|
\fI\%\-\-tls\-sct\-dir\fP option.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-dh\-param\-file=<PATH>
|
|
Path to file that contains DH parameters in PEM format.
|
|
Without this option, DHE cipher suites are not
|
|
available.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.sp
|
|
Default: \fBh2,h2\-16,h2\-14,http/1.1\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-verify\-client
|
|
Require and verify client certificate.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client\-private\-key\-file=<PATH>
|
|
Path to file that contains client private key used in
|
|
backend client authentication.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client\-cert\-file=<PATH>
|
|
Path to file that contains client certificate used in
|
|
backend client authentication.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-min\-proto\-version=<VER>
|
|
Specify minimum SSL/TLS protocol. The name matching is
|
|
done in case\-insensitive manner. The versions between
|
|
\fI\%\-\-tls\-min\-proto\-version\fP and \fI\%\-\-tls\-max\-proto\-version\fP are
|
|
enabled. If the protocol list advertised by client does
|
|
not overlap this range, you will receive the error
|
|
message "unknown protocol". If a protocol version lower
|
|
than TLSv1.2 is specified, make sure that the compatible
|
|
ciphers are included in \fI\%\-\-ciphers\fP option. The default
|
|
cipher list only includes ciphers compatible with
|
|
TLSv1.2 or above. The available versions are:
|
|
TLSv1.2, TLSv1.1, and TLSv1.0
|
|
.sp
|
|
Default: \fBTLSv1.2\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-max\-proto\-version=<VER>
|
|
Specify maximum SSL/TLS protocol. The name matching is
|
|
done in case\-insensitive manner. The versions between
|
|
\fI\%\-\-tls\-min\-proto\-version\fP and \fI\%\-\-tls\-max\-proto\-version\fP are
|
|
enabled. If the protocol list advertised by client does
|
|
not overlap this range, you will receive the error
|
|
message "unknown protocol". The available versions are:
|
|
TLSv1.2, TLSv1.1, and TLSv1.0
|
|
.sp
|
|
Default: \fBTLSv1.2\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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
|
|
\fI\%\-\-tls\-ticket\-key\-cipher\fP, the file must contain exactly
|
|
48 bytes. If aes\-256\-cbc is given in
|
|
\fI\%\-\-tls\-ticket\-key\-cipher\fP, 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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached=<HOST>,<PORT>[;tls]
|
|
Specify address of memcached server to get TLS ticket
|
|
keys for session resumption. 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. Optionally,
|
|
memcached connection can be encrypted with TLS by
|
|
specifying "tls" parameter.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached\-address\-family=(auto|IPv4|IPv6)
|
|
Specify address family of memcached connections to get
|
|
TLS ticket keys. If "auto" is given, both IPv4 and IPv6
|
|
are considered. If "IPv4" is given, only IPv4 address
|
|
is considered. If "IPv6" is given, only IPv6 address is
|
|
considered.
|
|
.sp
|
|
Default: \fBauto\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached\-interval=<DURATION>
|
|
Set interval to get TLS ticket keys from memcached.
|
|
.sp
|
|
Default: \fB10m\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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
|
|
\fI\%\-\-tls\-ticket\-key\-memcached\-max\-fail\fP option.
|
|
.sp
|
|
Default: \fB3\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached\-max\-fail=<N>
|
|
Set maximum number of consecutive failure before
|
|
disabling TLS ticket until next scheduled key retrieval.
|
|
.sp
|
|
Default: \fB2\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached\-cert\-file=<PATH>
|
|
Path to client certificate for memcached connections to
|
|
get TLS ticket keys.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-ticket\-key\-memcached\-private\-key\-file=<PATH>
|
|
Path to client private key for memcached connections to
|
|
get TLS ticket keys.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-fetch\-ocsp\-response\-file=<PATH>
|
|
Path to fetch\-ocsp\-response script file. It should be
|
|
absolute path.
|
|
.sp
|
|
Default: \fB/usr/local/share/nghttp2/fetch\-ocsp\-response\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-ocsp\-update\-interval=<DURATION>
|
|
Set interval to update OCSP response cache.
|
|
.sp
|
|
Default: \fB4h\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-ocsp\-startup
|
|
Start accepting connections after initial attempts to
|
|
get OCSP responses finish. It does not matter some of
|
|
the attempts fail. This feature is useful if OCSP
|
|
responses must be available before accepting
|
|
connections.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-verify\-ocsp
|
|
nghttpx does not verify OCSP response.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-ocsp
|
|
Disable OCSP stapling.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-session\-cache\-memcached=<HOST>,<PORT>[;tls]
|
|
Specify address of memcached server to store session
|
|
cache. This enables shared session cache between
|
|
multiple nghttpx instances. Optionally, memcached
|
|
connection can be encrypted with TLS by specifying "tls"
|
|
parameter.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-session\-cache\-memcached\-address\-family=(auto|IPv4|IPv6)
|
|
Specify address family of memcached connections to store
|
|
session cache. If "auto" is given, both IPv4 and IPv6
|
|
are considered. If "IPv4" is given, only IPv4 address
|
|
is considered. If "IPv6" is given, only IPv6 address is
|
|
considered.
|
|
.sp
|
|
Default: \fBauto\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-session\-cache\-memcached\-cert\-file=<PATH>
|
|
Path to client certificate for memcached connections to
|
|
store session cache.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-session\-cache\-memcached\-private\-key\-file=<PATH>
|
|
Path to client private key for memcached connections to
|
|
store session cache.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-dyn\-rec\-warmup\-threshold=<SIZE>
|
|
Specify the threshold size for TLS dynamic record size
|
|
behaviour. During a TLS session, after the threshold
|
|
number of bytes have been written, the TLS record size
|
|
will be increased to the maximum allowed (16K). The max
|
|
record size will continue to be used on the active TLS
|
|
session. After \fI\%\-\-tls\-dyn\-rec\-idle\-timeout\fP has elapsed,
|
|
the record size is reduced to 1300 bytes. Specify 0 to
|
|
always use the maximum record size, regardless of idle
|
|
period. This behaviour applies to all TLS based
|
|
frontends, and TLS HTTP/2 backends.
|
|
.sp
|
|
Default: \fB1M\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-dyn\-rec\-idle\-timeout=<DURATION>
|
|
Specify TLS dynamic record size behaviour timeout. See
|
|
\fI\%\-\-tls\-dyn\-rec\-warmup\-threshold\fP for more information.
|
|
This behaviour applies to all TLS based frontends, and
|
|
TLS HTTP/2 backends.
|
|
.sp
|
|
Default: \fB1s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-http2\-cipher\-black\-list
|
|
Allow black listed cipher suite on frontend HTTP/2
|
|
connection. See
|
|
\fI\%https://tools.ietf.org/html/rfc7540#appendix\-A\fP for the
|
|
complete HTTP/2 cipher suites black list.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client\-no\-http2\-cipher\-black\-list
|
|
Allow black listed cipher suite on backend HTTP/2
|
|
connection. See
|
|
\fI\%https://tools.ietf.org/html/rfc7540#appendix\-A\fP for the
|
|
complete HTTP/2 cipher suites black list.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-sct\-dir=<DIR>
|
|
Specifies the directory where *.sct files exist. All
|
|
*.sct files in <DIR> are read, and sent as
|
|
extension_data of TLS signed_certificate_timestamp (RFC
|
|
6962) to client. These *.sct files are for the
|
|
certificate specified in positional command\-line
|
|
argument <CERT>, or certificate option in configuration
|
|
file. For additional certificates, use \fI\%\-\-subcert\fP
|
|
option. This option requires OpenSSL >= 1.0.2.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-psk\-secrets=<PATH>
|
|
Read list of PSK identity and secrets from <PATH>. This
|
|
is used for frontend connection. The each line of input
|
|
file is formatted as <identity>:<hex\-secret>, where
|
|
<identity> is PSK identity, and <hex\-secret> is secret
|
|
in hex. An empty line, and line which starts with \(aq#\(aq
|
|
are skipped. The default enabled cipher list might not
|
|
contain any PSK cipher suite. In that case, desired PSK
|
|
cipher suites must be enabled using \fI\%\-\-ciphers\fP option.
|
|
The desired PSK cipher suite may be black listed by
|
|
HTTP/2. To use those cipher suites with HTTP/2,
|
|
consider to use \fI\%\-\-no\-http2\-cipher\-black\-list\fP option.
|
|
But be aware its implications.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client\-psk\-secrets=<PATH>
|
|
Read PSK identity and secrets from <PATH>. This is used
|
|
for backend connection. The each line of input file is
|
|
formatted as <identity>:<hex\-secret>, where <identity>
|
|
is PSK identity, and <hex\-secret> is secret in hex. An
|
|
empty line, and line which starts with \(aq#\(aq are skipped.
|
|
The first identity and secret pair encountered is used.
|
|
The default enabled cipher list might not contain any
|
|
PSK cipher suite. In that case, desired PSK cipher
|
|
suites must be enabled using \fI\%\-\-client\-ciphers\fP option.
|
|
The desired PSK cipher suite may be black listed by
|
|
HTTP/2. To use those cipher suites with HTTP/2,
|
|
consider to use \fI\%\-\-client\-no\-http2\-cipher\-black\-list\fP
|
|
option. But be aware its implications.
|
|
.UNINDENT
|
|
.SS HTTP/2 and SPDY
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-c, \-\-frontend\-http2\-max\-concurrent\-streams=<N>
|
|
Set the maximum number of the concurrent streams in one
|
|
frontend HTTP/2 and SPDY session.
|
|
.sp
|
|
Default: \(ga\(ga 100\(ga\(ga
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-max\-concurrent\-streams=<N>
|
|
Set the maximum number of the concurrent streams in one
|
|
backend HTTP/2 session. This sets maximum number of
|
|
concurrent opened pushed streams. The maximum number of
|
|
concurrent requests are set by a remote server.
|
|
.sp
|
|
Default: \fB100\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-window\-size=<SIZE>
|
|
Sets the per\-stream initial window size of HTTP/2 and
|
|
SPDY frontend connection.
|
|
.sp
|
|
Default: \fB65535\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-connection\-window\-size=<SIZE>
|
|
Sets the per\-connection window size of HTTP/2 and SPDY
|
|
frontend connection. For SPDY connection, the value
|
|
less than 64KiB is rounded up to 64KiB.
|
|
.sp
|
|
Default: \fB65535\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-window\-size=<SIZE>
|
|
Sets the initial window size of HTTP/2 backend
|
|
connection.
|
|
.sp
|
|
Default: \fB65535\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-connection\-window\-size=<SIZE>
|
|
Sets the per\-connection window size of HTTP/2 backend
|
|
connection.
|
|
.sp
|
|
Default: \fB2147483647\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-http2\-no\-cookie\-crumbling
|
|
Don\(aqt crumble cookie header field.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-server\-push
|
|
Disable HTTP/2 server push. Server push is supported by
|
|
default mode and HTTP/2 frontend via Link header field.
|
|
It is also supported if both frontend and backend are
|
|
HTTP/2 in default mode. In this case, server push from
|
|
backend session is relayed to frontend, and server push
|
|
via Link header field is also supported. SPDY frontend
|
|
does not support server push.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-optimize\-write\-buffer\-size
|
|
(Experimental) Enable write buffer size optimization in
|
|
frontend HTTP/2 TLS connection. This optimization aims
|
|
to reduce write buffer size so that it only contains
|
|
bytes which can send immediately. This makes server
|
|
more responsive to prioritized HTTP/2 stream because the
|
|
buffering of lower priority stream is reduced. This
|
|
option is only effective on recent Linux platform.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-optimize\-window\-size
|
|
(Experimental) Automatically tune connection level
|
|
window size of frontend HTTP/2 TLS connection. If this
|
|
feature is enabled, connection window size starts with
|
|
the default window size, 65535 bytes. nghttpx
|
|
automatically adjusts connection window size based on
|
|
TCP receiving window size. The maximum window size is
|
|
capped by the value specified by
|
|
\fI\%\-\-frontend\-http2\-connection\-window\-size\fP\&. Since the
|
|
stream is subject to stream level window size, it should
|
|
be adjusted using \fI\%\-\-frontend\-http2\-window\-size\fP option as
|
|
well. This option is only effective on recent Linux
|
|
platform.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-encoder\-dynamic\-table\-size=<SIZE>
|
|
Specify the maximum dynamic table size of HPACK encoder
|
|
in the frontend HTTP/2 connection. The decoder (client)
|
|
specifies the maximum dynamic table size it accepts.
|
|
Then the negotiated dynamic table size is the minimum of
|
|
this option value and the value which client specified.
|
|
.sp
|
|
Default: \fB4K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-decoder\-dynamic\-table\-size=<SIZE>
|
|
Specify the maximum dynamic table size of HPACK decoder
|
|
in the frontend HTTP/2 connection.
|
|
.sp
|
|
Default: \fB4K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-encoder\-dynamic\-table\-size=<SIZE>
|
|
Specify the maximum dynamic table size of HPACK encoder
|
|
in the backend HTTP/2 connection. The decoder (backend)
|
|
specifies the maximum dynamic table size it accepts.
|
|
Then the negotiated dynamic table size is the minimum of
|
|
this option value and the value which backend specified.
|
|
.sp
|
|
Default: \fB4K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-decoder\-dynamic\-table\-size=<SIZE>
|
|
Specify the maximum dynamic table size of HPACK decoder
|
|
in the backend HTTP/2 connection.
|
|
.sp
|
|
Default: \fB4K\fP
|
|
.UNINDENT
|
|
.SS Mode
|
|
.INDENT 0.0
|
|
.TP
|
|
.B (default mode)
|
|
Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. "no\-tls"
|
|
parameter is used in \fI\%\-\-frontend\fP option, accept HTTP/2
|
|
and HTTP/1.1 over cleartext TCP. The incoming HTTP/1.1
|
|
connection can be upgraded to HTTP/2 through HTTP
|
|
Upgrade.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-s, \-\-http2\-proxy
|
|
Like default mode, but enable forward proxy. This is so
|
|
called HTTP/2 proxy mode.
|
|
.UNINDENT
|
|
.SS Logging
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-L, \-\-log\-level=<LEVEL>
|
|
Set the severity level of log output. <LEVEL> must be
|
|
one of INFO, NOTICE, WARN, ERROR and FATAL.
|
|
.sp
|
|
Default: \fBNOTICE\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-accesslog\-file=<PATH>
|
|
Set path to write access log. To reopen file, send USR1
|
|
signal to nghttpx.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-accesslog\-syslog
|
|
Send access log to syslog. If this option is used,
|
|
\fI\%\-\-accesslog\-file\fP option is ignored.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-accesslog\-format=<FORMAT>
|
|
Specify format string for access log. The default
|
|
format is combined format. The following variables are
|
|
available:
|
|
.INDENT 7.0
|
|
.IP \(bu 2
|
|
$remote_addr: client IP address.
|
|
.IP \(bu 2
|
|
$time_local: local time in Common Log format.
|
|
.IP \(bu 2
|
|
$time_iso8601: local time in ISO 8601 format.
|
|
.IP \(bu 2
|
|
$request: HTTP request line.
|
|
.IP \(bu 2
|
|
$status: HTTP response status code.
|
|
.IP \(bu 2
|
|
$body_bytes_sent: the number of bytes sent to client
|
|
as response body.
|
|
.IP \(bu 2
|
|
$http_<VAR>: value of HTTP request header <VAR> where
|
|
\(aq_\(aq in <VAR> is replaced with \(aq\-\(aq.
|
|
.IP \(bu 2
|
|
$remote_port: client port.
|
|
.IP \(bu 2
|
|
$server_port: server port.
|
|
.IP \(bu 2
|
|
$request_time: request processing time in seconds with
|
|
milliseconds resolution.
|
|
.IP \(bu 2
|
|
$pid: PID of the running process.
|
|
.IP \(bu 2
|
|
$alpn: ALPN identifier of the protocol which generates
|
|
the response. For HTTP/1, ALPN is always http/1.1,
|
|
regardless of minor version.
|
|
.IP \(bu 2
|
|
$tls_cipher: cipher used for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$tls_protocol: protocol for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$tls_session_id: session ID for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$tls_session_reused: "r" if SSL/TLS session was
|
|
reused. Otherwise, "."
|
|
.IP \(bu 2
|
|
$tls_sni: SNI server name for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$backend_host: backend host used to fulfill the
|
|
request. "\-" if backend host is not available.
|
|
.IP \(bu 2
|
|
$backend_port: backend port used to fulfill the
|
|
request. "\-" if backend host is not available.
|
|
.UNINDENT
|
|
.sp
|
|
The variable can be enclosed by "{" and "}" for
|
|
disambiguation (e.g., ${remote_addr}).
|
|
.sp
|
|
Default: \fB$remote_addr \- \- [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-accesslog\-write\-early
|
|
Write access log when response header fields are
|
|
received from backend rather than when request
|
|
transaction finishes.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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 \fI\%\-\-errorlog\-syslog\fP is used.
|
|
.sp
|
|
Default: \fB/dev/stderr\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-errorlog\-syslog
|
|
Send error log to syslog. If this option is used,
|
|
\fI\%\-\-errorlog\-file\fP option is ignored.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-syslog\-facility=<FACILITY>
|
|
Set syslog facility to <FACILITY>.
|
|
.sp
|
|
Default: \fBdaemon\fP
|
|
.UNINDENT
|
|
.SS HTTP
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-add\-x\-forwarded\-for
|
|
Append X\-Forwarded\-For header field to the downstream
|
|
request.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-strip\-incoming\-x\-forwarded\-for
|
|
Strip X\-Forwarded\-For header field from inbound client
|
|
requests.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-add\-x\-forwarded\-proto
|
|
Don\(aqt append additional X\-Forwarded\-Proto header field
|
|
to the backend request. If inbound client sets
|
|
X\-Forwarded\-Proto, and
|
|
\fI\%\-\-no\-strip\-incoming\-x\-forwarded\-proto\fP option is used,
|
|
they are passed to the backend.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-strip\-incoming\-x\-forwarded\-proto
|
|
Don\(aqt strip X\-Forwarded\-Proto header field from inbound
|
|
client requests.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-add\-forwarded=<LIST>
|
|
Append RFC 7239 Forwarded header field with parameters
|
|
specified in comma delimited list <LIST>. The supported
|
|
parameters are "by", "for", "host", and "proto". By
|
|
default, the value of "by" and "for" parameters are
|
|
obfuscated string. See \fI\%\-\-forwarded\-by\fP and
|
|
\fI\%\-\-forwarded\-for\fP options respectively. Note that nghttpx
|
|
does not translate non\-standard X\-Forwarded\-* header
|
|
fields into Forwarded header field, and vice versa.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-strip\-incoming\-forwarded
|
|
Strip Forwarded header field from inbound client
|
|
requests.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-forwarded\-by=(obfuscated|ip|<VALUE>)
|
|
Specify the parameter value sent out with "by" parameter
|
|
of Forwarded header field. If "obfuscated" is given,
|
|
the string is randomly generated at startup. If "ip" is
|
|
given, the interface address of the connection,
|
|
including port number, is sent with "by" parameter. In
|
|
case of UNIX domain socket, "localhost" is used instead
|
|
of address and port. User can also specify the static
|
|
obfuscated string. The limitation is that it must start
|
|
with "_", and only consists of character set
|
|
[A\-Za\-z0\-9._\-], as described in RFC 7239.
|
|
.sp
|
|
Default: \fBobfuscated\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-forwarded\-for=(obfuscated|ip)
|
|
Specify the parameter value sent out with "for"
|
|
parameter of Forwarded header field. If "obfuscated" is
|
|
given, the string is randomly generated for each client
|
|
connection. If "ip" is given, the remote client address
|
|
of the connection, without port number, is sent with
|
|
"for" parameter. In case of UNIX domain socket,
|
|
"localhost" is used instead of address.
|
|
.sp
|
|
Default: \fBobfuscated\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-via
|
|
Don\(aqt append to Via header field. If Via header field
|
|
is received, it is left unaltered.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-location\-rewrite
|
|
Don\(aqt rewrite location header field in default mode.
|
|
When \fI\%\-\-http2\-proxy\fP is used, location header field will
|
|
not be altered regardless of this option.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-host\-rewrite
|
|
Rewrite host and :authority header fields in default
|
|
mode. When \fI\%\-\-http2\-proxy\fP is used, these headers will
|
|
not be altered regardless of this option.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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: \fI\%\-\-altsvc\fP=h2,443
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-add\-request\-header=<HEADER>
|
|
Specify additional header field to add to request header
|
|
set. This option just appends header field and won\(aqt
|
|
replace anything already set. This option can be used
|
|
several times to specify multiple header fields.
|
|
Example: \fI\%\-\-add\-request\-header\fP="foo: bar"
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-add\-response\-header=<HEADER>
|
|
Specify additional header field to add to response
|
|
header set. This option just appends header field and
|
|
won\(aqt replace anything already set. This option can be
|
|
used several times to specify multiple header fields.
|
|
Example: \fI\%\-\-add\-response\-header\fP="foo: bar"
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-request\-header\-field\-buffer=<SIZE>
|
|
Set maximum buffer size for incoming HTTP request header
|
|
field list. This is the sum of header name and value in
|
|
bytes. If trailer fields exist, they are counted
|
|
towards this number.
|
|
.sp
|
|
Default: \fB64K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-max\-request\-header\-fields=<N>
|
|
Set maximum number of incoming HTTP request header
|
|
fields. If trailer fields exist, they are counted
|
|
towards this number.
|
|
.sp
|
|
Default: \fB100\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-response\-header\-field\-buffer=<SIZE>
|
|
Set maximum buffer size for incoming HTTP response
|
|
header field list. This is the sum of header name and
|
|
value in bytes. If trailer fields exist, they are
|
|
counted towards this number.
|
|
.sp
|
|
Default: \fB64K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-max\-response\-header\-fields=<N>
|
|
Set maximum number of incoming HTTP response header
|
|
fields. If trailer fields exist, they are counted
|
|
towards this number.
|
|
.sp
|
|
Default: \fB500\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-error\-page=(<CODE>|*)=<PATH>
|
|
Set file path to custom error page served when nghttpx
|
|
originally generates HTTP error status code <CODE>.
|
|
<CODE> must be greater than or equal to 400, and at most
|
|
599. If "*" is used instead of <CODE>, it matches all
|
|
HTTP status code. If error status code comes from
|
|
backend server, the custom error pages are not used.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-server\-name=<NAME>
|
|
Change server response header field value to <NAME>.
|
|
.sp
|
|
Default: \fBnghttpx\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-no\-server\-rewrite
|
|
Don\(aqt rewrite server header field in default mode. When
|
|
\fI\%\-\-http2\-proxy\fP is used, these headers will not be altered
|
|
regardless of this option.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-redirect\-https\-port=<PORT>
|
|
Specify the port number which appears in Location header
|
|
field when redirect to HTTPS URI is made due to
|
|
"redirect\-if\-not\-tls" parameter in \fI\%\-\-backend\fP option.
|
|
.sp
|
|
Default: \fB443\fP
|
|
.UNINDENT
|
|
.SS API
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-api\-max\-request\-body=<SIZE>
|
|
Set the maximum size of request body for API request.
|
|
.sp
|
|
Default: \fB16K\fP
|
|
.UNINDENT
|
|
.SS DNS
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-dns\-cache\-timeout=<DURATION>
|
|
Set duration that cached DNS results remain valid. Note
|
|
that nghttpx caches the unsuccessful results as well.
|
|
.sp
|
|
Default: \fB10s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-dns\-lookup\-timeout=<DURATION>
|
|
Set timeout that DNS server is given to respond to the
|
|
initial DNS query. For the 2nd and later queries,
|
|
server is given time based on this timeout, and it is
|
|
scaled linearly.
|
|
.sp
|
|
Default: \fB5s\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-dns\-max\-try=<N>
|
|
Set the number of DNS query before nghttpx gives up name
|
|
lookup.
|
|
.sp
|
|
Default: \fB2\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-max\-requests=<N>
|
|
The number of requests that single frontend connection
|
|
can process. For HTTP/2, this is the number of streams
|
|
in one HTTP/2 connection. For HTTP/1, this is the
|
|
number of keep alive requests. This is hint to nghttpx,
|
|
and it may allow additional few requests. The default
|
|
value is unlimited.
|
|
.UNINDENT
|
|
.SS Debug
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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 \fI\%\-n\fP<N>, where <N> >= 2.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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 \fI\%\-n\fP<N>, where <N> >= 2.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-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
|
|
\fI\%\-n\fP=N, where N >= 2.
|
|
.UNINDENT
|
|
.SS Process
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-D, \-\-daemon
|
|
Run in a background. If \fI\%\-D\fP is used, the current working
|
|
directory is changed to \(aq\fI/\fP\(aq.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-pid\-file=<PATH>
|
|
Set path to save PID of this program.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-user=<USER>
|
|
Run this program as <USER>. This option is intended to
|
|
be used to drop root privileges.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-single\-process
|
|
Run this program in a single process mode for debugging
|
|
purpose. Without this option, nghttpx creates at least
|
|
2 processes: master and worker processes. If this
|
|
option is used, master and worker are unified into a
|
|
single process. nghttpx still spawns additional process
|
|
if neverbleed is used. In the single process mode, the
|
|
signal handling feature is disabled.
|
|
.UNINDENT
|
|
.SS Scripting
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-mruby\-file=<PATH>
|
|
Set mruby script file
|
|
.UNINDENT
|
|
.SS Misc
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-conf=<PATH>
|
|
Load configuration from <PATH>. Please note that
|
|
nghttpx always tries to read the default configuration
|
|
file if \fI\%\-\-conf\fP is not given.
|
|
.sp
|
|
Default: \fB/etc/nghttpx/nghttpx.conf\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-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.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-v, \-\-version
|
|
Print version and exit.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-h, \-\-help
|
|
Print this help and exit.
|
|
.UNINDENT
|
|
.sp
|
|
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).
|
|
.sp
|
|
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.
|
|
.SH FILES
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \fI/etc/nghttpx/nghttpx.conf\fP
|
|
The default configuration file path nghttpx searches at startup.
|
|
The configuration file path can be changed using \fI\%\-\-conf\fP
|
|
option.
|
|
.sp
|
|
Those lines which are staring \fB#\fP are treated as comment.
|
|
.sp
|
|
The option name in the configuration file is the long command\-line
|
|
option name with leading \fB\-\-\fP stripped (e.g., \fBfrontend\fP). Put
|
|
\fB=\fP between option name and value. Don\(aqt put extra leading or
|
|
trailing spaces.
|
|
.sp
|
|
When specifying arguments including characters which have special
|
|
meaning to a shell, we usually use quotes so that shell does not
|
|
interpret them. When writing this configuration file, quotes for
|
|
this purpose must not be used. For example, specify additional
|
|
request header field, do this:
|
|
.INDENT 7.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
add\-request\-header=foo: bar
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
instead of:
|
|
.INDENT 7.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
add\-request\-header="foo: bar"
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
The options which do not take argument in the command\-line \fItake\fP
|
|
argument in the configuration file. Specify \fByes\fP as an argument
|
|
(e.g., \fBhttp2\-proxy=yes\fP). If other string is given, it is
|
|
ignored.
|
|
.sp
|
|
To specify private key and certificate file which are given as
|
|
positional arguments in command\-line, use \fBprivate\-key\-file\fP and
|
|
\fBcertificate\-file\fP\&.
|
|
.sp
|
|
\fI\%\-\-conf\fP option cannot be used in the configuration file and
|
|
will be ignored if specified.
|
|
.TP
|
|
.B Error log
|
|
Error log is written to stderr by default. It can be configured
|
|
using \fI\%\-\-errorlog\-file\fP\&. The format of log message is as
|
|
follows:
|
|
.sp
|
|
<datetime> <master\-pid> <current\-pid> <thread\-id> <level> (<filename>:<line>) <msg>
|
|
.INDENT 7.0
|
|
.TP
|
|
.B <datetime>
|
|
It is a conbination of date and time when the log is written. It
|
|
is in ISO 8601 format.
|
|
.TP
|
|
.B <master\-pid>
|
|
It is a master process ID.
|
|
.TP
|
|
.B <current\-pid>
|
|
It is a process ID which writes this log.
|
|
.TP
|
|
.B <thread\-id>
|
|
It is a thread ID which writes this log. It would be unique
|
|
within <current\-pid>.
|
|
.TP
|
|
.B <filename> and <line>
|
|
They are source file name, and line number which produce this log.
|
|
.TP
|
|
.B <msg>
|
|
It is a log message body.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SH SIGNALS
|
|
.INDENT 0.0
|
|
.TP
|
|
.B SIGQUIT
|
|
Shutdown gracefully. First accept pending connections and stop
|
|
accepting connection. After all connections are handled, nghttpx
|
|
exits.
|
|
.TP
|
|
.B SIGHUP
|
|
Reload configuration file given in \fI\%\-\-conf\fP\&.
|
|
.TP
|
|
.B SIGUSR1
|
|
Reopen log files.
|
|
.UNINDENT
|
|
.sp
|
|
SIGUSR2
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
Fork and execute nghttpx. It will execute the binary in the same
|
|
path with same command\-line arguments and environment variables. As
|
|
of nghttpx version 1.20.0, the new master process sends SIGQUIT to
|
|
the original master process when it is ready to serve requests. For
|
|
the earlier versions of nghttpx, user has to send SIGQUIT to the
|
|
original master process.
|
|
.sp
|
|
The difference between SIGUSR2 (+ SIGQUIT) and SIGHUP is that former
|
|
is usually used to execute new binary, and the master process is
|
|
newly spawned. On the other hand, the latter just reloads
|
|
configuration file, and the same master process continues to exist.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
\fBNOTE:\fP
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
nghttpx consists of multiple processes: one process for processing
|
|
these signals, and another one for processing requests. The former
|
|
spawns the latter. The former is called master process, and the
|
|
latter is called worker process. If neverbleed is enabled, the
|
|
worker process spawns neverbleed daemon process which does RSA key
|
|
processing. The above signal must be sent to the master process.
|
|
If the other processes received one of them, it is ignored. This
|
|
behaviour of these processes may change in the future release. In
|
|
other words, in the future release, the processes other than master
|
|
process may terminate upon the reception of these signals.
|
|
Therefore these signals should not be sent to the processes other
|
|
than master process.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SH SERVER PUSH
|
|
.sp
|
|
nghttpx supports HTTP/2 server push in default mode with Link header
|
|
field. nghttpx looks for Link header field (\fI\%RFC 5988\fP) in response headers from
|
|
backend server and extracts URI\-reference with parameter
|
|
\fBrel=preload\fP (see \fI\%preload\fP)
|
|
and pushes those URIs to the frontend client. Here is a sample Link
|
|
header field to initiate server push:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
Link: </fonts/font.woff>; rel=preload
|
|
Link: </css/theme.css>; rel=preload
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
Currently, the following restriction is applied for server push:
|
|
.INDENT 0.0
|
|
.IP 1. 3
|
|
The associated stream must have method "GET" or "POST". The
|
|
associated stream\(aqs status code must be 200.
|
|
.UNINDENT
|
|
.sp
|
|
This limitation may be loosened in the future release.
|
|
.sp
|
|
nghttpx also supports server push if both frontend and backend are
|
|
HTTP/2 in default mode. In this case, in addition to server push via
|
|
Link header field, server push from backend is forwarded to frontend
|
|
HTTP/2 session.
|
|
.sp
|
|
HTTP/2 server push will be disabled if \fI\%\-\-http2\-proxy\fP is
|
|
used.
|
|
.SH UNIX DOMAIN SOCKET
|
|
.sp
|
|
nghttpx supports UNIX domain socket with a filename for both frontend
|
|
and backend connections.
|
|
.sp
|
|
Please note that current nghttpx implementation does not delete a
|
|
socket with a filename. And on start up, if nghttpx detects that the
|
|
specified socket already exists in the file system, nghttpx first
|
|
deletes it. However, if SIGUSR2 is used to execute new binary and
|
|
both old and new configurations use same filename, new binary does not
|
|
delete the socket and continues to use it.
|
|
.SH OCSP STAPLING
|
|
.sp
|
|
OCSP query is done using external Python script
|
|
\fBfetch\-ocsp\-response\fP, which has been originally developed in Perl
|
|
as part of h2o project (\fI\%https://github.com/h2o/h2o\fP), and was
|
|
translated into Python.
|
|
.sp
|
|
The script file is usually installed under
|
|
\fB$(prefix)/share/nghttp2/\fP directory. The actual path to script can
|
|
be customized using \fI\%\-\-fetch\-ocsp\-response\-file\fP option.
|
|
.sp
|
|
If OCSP query is failed, previous OCSP response, if any, is continued
|
|
to be used.
|
|
.sp
|
|
\fI\%\-\-fetch\-ocsp\-response\-file\fP option provides wide range of
|
|
possibility to manage OCSP response. It can take an arbitrary script
|
|
or executable. The requirement is that it supports the command\-line
|
|
interface of \fBfetch\-ocsp\-response\fP script, and it must return a
|
|
valid DER encoded OCSP response on success. It must return exit code
|
|
0 on success, and 75 for temporary error, and the other error code for
|
|
generic failure. For large cluster of servers, it is not efficient
|
|
for each server to perform OCSP query using \fBfetch\-ocsp\-response\fP\&.
|
|
Instead, you can retrieve OCSP response in some way, and store it in a
|
|
disk or a shared database. Then specify a program in
|
|
\fI\%\-\-fetch\-ocsp\-response\-file\fP to fetch it from those stores.
|
|
This could provide a way to share the OCSP response between fleet of
|
|
servers, and also any OCSP query strategy can be applied which may be
|
|
beyond the ability of nghttpx itself or \fBfetch\-ocsp\-response\fP
|
|
script.
|
|
.SH TLS SESSION RESUMPTION
|
|
.sp
|
|
nghttpx supports TLS session resumption through both session ID and
|
|
session ticket.
|
|
.SS SESSION ID RESUMPTION
|
|
.sp
|
|
By default, session ID is shared by all worker threads.
|
|
.sp
|
|
If \fI\%\-\-tls\-session\-cache\-memcached\fP is given, nghttpx will
|
|
insert serialized session data to memcached with
|
|
\fBnghttpx:tls\-session\-cache:\fP + lowercased hex string of session ID
|
|
as a memcached entry key, with expiry time 12 hours. Session timeout
|
|
is set to 12 hours.
|
|
.sp
|
|
By default, connections to memcached server are not encrypted. To
|
|
enable encryption, use \fBtls\fP keyword in
|
|
\fI\%\-\-tls\-session\-cache\-memcached\fP option.
|
|
.SS TLS SESSION TICKET RESUMPTION
|
|
.sp
|
|
By default, session ticket is shared by all worker threads. The
|
|
automatic key rotation is also enabled by default. Every an hour, new
|
|
encryption key is generated, and previous encryption key becomes
|
|
decryption only key. We set session timeout to 12 hours, and thus we
|
|
keep at most 12 keys.
|
|
.sp
|
|
If \fI\%\-\-tls\-ticket\-key\-memcached\fP is given, encryption keys are
|
|
retrieved from memcached. nghttpx just reads keys from memcached; one
|
|
has to deploy key generator program to update keys frequently (e.g.,
|
|
every 1 hour). The example key generator tlsticketupdate.go is
|
|
available under contrib directory in nghttp2 archive. The memcached
|
|
entry key is \fBnghttpx:tls\-ticket\-key\fP\&. The data format stored in
|
|
memcached is the binary format described below:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
+\-\-\-\-\-\-\-\-\-\-\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
|
|
| VERSION (4) |LEN (2)|KEY(48 or 80) ...
|
|
+\-\-\-\-\-\-\-\-\-\-\-\-\-\-+\-\-\-\-\-\-\-+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
|
|
^ |
|
|
| |
|
|
+\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-+
|
|
(LEN, KEY) pair can be repeated
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
All numbers in the above figure is bytes. All integer fields are
|
|
network byte order.
|
|
.sp
|
|
First 4 bytes integer VERSION field, which must be 1. The 2 bytes
|
|
integer LEN field gives the length of following KEY field, which
|
|
contains key. If \fI\%\-\-tls\-ticket\-key\-cipher\fP=aes\-128\-cbc is
|
|
used, LEN must be 48. If
|
|
\fI\%\-\-tls\-ticket\-key\-cipher\fP=aes\-256\-cbc is used, LEN must be
|
|
80. LEN and KEY pair can be repeated multiple times to store multiple
|
|
keys. The key appeared first is used as encryption key. All the
|
|
remaining keys are used as decryption only.
|
|
.sp
|
|
By default, connections to memcached server are not encrypted. To
|
|
enable encryption, use \fBtls\fP keyword in
|
|
\fI\%\-\-tls\-ticket\-key\-memcached\fP option.
|
|
.sp
|
|
If \fI\%\-\-tls\-ticket\-key\-file\fP is given, encryption key is read
|
|
from the given file. In this case, nghttpx does not rotate key
|
|
automatically. To rotate key, one has to restart nghttpx (see
|
|
SIGNALS).
|
|
.SH CERTIFICATE TRANSPARENCY
|
|
.sp
|
|
nghttpx supports TLS \fBsigned_certificate_timestamp\fP extension (\fI\%RFC
|
|
6962\fP). The relevant options
|
|
are \fI\%\-\-tls\-sct\-dir\fP and \fBsct\-dir\fP parameter in
|
|
\fI\%\-\-subcert\fP\&. They takes a directory, and nghttpx reads all
|
|
files whose extension is \fB\&.sct\fP under the directory. The \fB*.sct\fP
|
|
files are encoded as \fBSignedCertificateTimestamp\fP struct described
|
|
in \fI\%section 3.2 of RFC 69662\fP\&. This format is
|
|
the same one used by \fI\%nginx\-ct\fP and \fI\%mod_ssl_ct\fP\&.
|
|
\fI\%ct\-submit\fP can be
|
|
used to submit certificates to log servers, and obtain the
|
|
\fBSignedCertificateTimestamp\fP struct which can be used with nghttpx.
|
|
.SH MRUBY SCRIPTING
|
|
.sp
|
|
\fBWARNING:\fP
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
The current mruby extension API is experimental and not frozen. The
|
|
API is subject to change in the future release.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
nghttpx allows users to extend its capability using mruby scripts.
|
|
nghttpx has 2 hook points to execute mruby script: request phase and
|
|
response phase. The request phase hook is invoked after all request
|
|
header fields are received from client. The response phase hook is
|
|
invoked after all response header fields are received from backend
|
|
server. These hooks allows users to modify header fields, or common
|
|
HTTP variables, like authority or request path, and even return custom
|
|
response without forwarding request to backend servers.
|
|
.sp
|
|
To specify mruby script file, use \fI\%\-\-mruby\-file\fP option. The
|
|
script will be evaluated once per thread on startup, and it must
|
|
instantiate object and evaluate it as the return value (e.g.,
|
|
\fBApp.new\fP). This object is called app object. If app object
|
|
defines \fBon_req\fP method, it is called with \fI\%Nghttpx::Env\fP
|
|
object on request hook. Similarly, if app object defines \fBon_resp\fP
|
|
method, it is called with \fI\%Nghttpx::Env\fP object on response
|
|
hook. For each method invocation, user can can access
|
|
\fI\%Nghttpx::Request\fP and \fI\%Nghttpx::Response\fP objects
|
|
via \fI\%Nghttpx::Env#req\fP and \fI\%Nghttpx::Env#resp\fP
|
|
respectively.
|
|
.INDENT 0.0
|
|
.TP
|
|
.B Nghttpx::REQUEST_PHASE
|
|
Constant to represent request phase.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B Nghttpx::RESPONSE_PHASE
|
|
Constant to represent response phase.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B class Nghttpx::Env
|
|
Object to represent current request specific context.
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] req
|
|
Return \fI\%Request\fP object.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] resp
|
|
Return \fI\%Response\fP object.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] ctx
|
|
Return Ruby hash object. It persists until request finishes.
|
|
So values set in request phase hoo can be retrieved in
|
|
response phase hook.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] phase
|
|
Return the current phase.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] remote_addr
|
|
Return IP address of a remote client. If connection is made
|
|
via UNIX domain socket, this returns the string "localhost".
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] server_addr
|
|
Return address of server that accepted the connection. This
|
|
is a string which specified in \fI\%\-\-frontend\fP option,
|
|
excluding port number, and not a resolved IP address. For
|
|
UNIX domain socket, this is a path to UNIX domain socket.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] server_port
|
|
Return port number of the server frontend which accepted the
|
|
connection from client.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] tls_used
|
|
Return true if TLS is used on the connection.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] tls_sni
|
|
Return the TLS SNI value which client sent in this connection.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B class Nghttpx::Request
|
|
Object to represent request from client. The modification to
|
|
Request object is allowed only in request phase hook.
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] http_version_major
|
|
Return HTTP major version.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] http_version_minor
|
|
Return HTTP minor version.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R/W] method
|
|
HTTP method. On assignment, copy of given value is assigned.
|
|
We don\(aqt accept arbitrary method name. We will document them
|
|
later, but well known methods, like GET, PUT and POST, are all
|
|
supported.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R/W] authority
|
|
Authority (i.e., example.org), including optional port
|
|
component . On assignment, copy of given value is assigned.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R/W] scheme
|
|
Scheme (i.e., http, https). On assignment, copy of given
|
|
value is assigned.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R/W] path
|
|
Request path, including query component (i.e., /index.html).
|
|
On assignment, copy of given value is assigned. The path does
|
|
not include authority component of URI. This may include
|
|
query component. nghttpx makes certain normalization for
|
|
path. It decodes percent\-encoding for unreserved characters
|
|
(see \fI\%https://tools.ietf.org/html/rfc3986#section\-2.3\fP), and
|
|
resolves ".." and ".". But it may leave characters which
|
|
should be percent\-encoded as is. So be careful when comparing
|
|
path against desired string.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] headers
|
|
Return Ruby hash containing copy of request header fields.
|
|
Changing values in returned hash does not change request
|
|
header fields actually used in request processing. Use
|
|
\fI\%Nghttpx::Request#add_header\fP or
|
|
\fI\%Nghttpx::Request#set_header\fP to change request
|
|
header fields.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B add_header(key, value)
|
|
Add header entry associated with key. The value can be single
|
|
string or array of string. It does not replace any existing
|
|
values associated with key.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B set_header(key, value)
|
|
Set header entry associated with key. The value can be single
|
|
string or array of string. It replaces any existing values
|
|
associated with key.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B clear_headers()
|
|
Clear all existing request header fields.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B push(uri)
|
|
Initiate to push resource identified by \fIuri\fP\&. Only HTTP/2
|
|
protocol supports this feature. For the other protocols, this
|
|
method is noop. \fIuri\fP can be absolute URI, absolute path or
|
|
relative path to the current request. For absolute or
|
|
relative path, scheme and authority are inherited from the
|
|
current request. Currently, method is always GET. nghttpx
|
|
will issue request to backend servers to fulfill this request.
|
|
The request and response phase hooks will be called for pushed
|
|
resource as well.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B class Nghttpx::Response
|
|
Object to represent response from backend server.
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] http_version_major
|
|
Return HTTP major version.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] http_version_minor
|
|
Return HTTP minor version.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R/W] status
|
|
HTTP status code. It must be in the range [200, 999],
|
|
inclusive. The non\-final status code is not supported in
|
|
mruby scripting at the moment.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B attribute [R] headers
|
|
Return Ruby hash containing copy of response header fields.
|
|
Changing values in returned hash does not change response
|
|
header fields actually used in response processing. Use
|
|
\fI\%Nghttpx::Response#add_header\fP or
|
|
\fI\%Nghttpx::Response#set_header\fP to change response
|
|
header fields.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B add_header(key, value)
|
|
Add header entry associated with key. The value can be single
|
|
string or array of string. It does not replace any existing
|
|
values associated with key.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B set_header(key, value)
|
|
Set header entry associated with key. The value can be single
|
|
string or array of string. It replaces any existing values
|
|
associated with key.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B clear_headers()
|
|
Clear all existing response header fields.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B return(body)
|
|
Return custom response \fIbody\fP to a client. When this method
|
|
is called in request phase hook, the request is not forwarded
|
|
to the backend, and response phase hook for this request will
|
|
not be invoked. When this method is called in response phase
|
|
hook, response from backend server is canceled and discarded.
|
|
The status code and response header fields should be set
|
|
before using this method. To set status code, use :rb:meth To
|
|
set response header fields, use
|
|
\fI\%Nghttpx::Response#status\fP\&. If status code is not
|
|
set, 200 is used. \fI\%Nghttpx::Response#add_header\fP and
|
|
\fI\%Nghttpx::Response#set_header\fP\&. When this method is
|
|
invoked in response phase hook, the response headers are
|
|
filled with the ones received from backend server. To send
|
|
completely custom header fields, first call
|
|
\fI\%Nghttpx::Response#clear_headers\fP to erase all
|
|
existing header fields, and then add required header fields.
|
|
It is an error to call this method twice for a given request.
|
|
.UNINDENT
|
|
.INDENT 7.0
|
|
.TP
|
|
.B send_info(status, headers)
|
|
Send non\-final (informational) response to a client. \fIstatus\fP
|
|
must be in the range [100, 199], inclusive. \fIheaders\fP is a
|
|
hash containing response header fields. Its key must be a
|
|
string, and the associated value must be either string or
|
|
array of strings. Since this is not a final response, even if
|
|
this method is invoked, request is still forwarded to a
|
|
backend unless \fI\%Nghttpx::Response#return\fP is called.
|
|
This method can be called multiple times. It cannot be called
|
|
after \fI\%Nghttpx::Response#return\fP is called.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SS MRUBY EXAMPLES
|
|
.sp
|
|
Modify request path:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
class App
|
|
def on_req(env)
|
|
env.req.path = "/apps#{env.req.path}"
|
|
end
|
|
end
|
|
|
|
App.new
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
Don\(aqt forget to instantiate and evaluate object at the last line.
|
|
.sp
|
|
Restrict permission of viewing a content to a specific client
|
|
addresses:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
class App
|
|
def on_req(env)
|
|
allowed_clients = ["127.0.0.1", "::1"]
|
|
|
|
if env.req.path.start_with?("/log/") &&
|
|
!allowed_clients.include?(env.remote_addr) then
|
|
env.resp.status = 404
|
|
env.resp.return "permission denied"
|
|
end
|
|
end
|
|
end
|
|
|
|
App.new
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SH API ENDPOINTS
|
|
.sp
|
|
nghttpx exposes API endpoints to manipulate it via HTTP based API. By
|
|
default, API endpoint is disabled. To enable it, add a dedicated
|
|
frontend for API using \fI\%\-\-frontend\fP option with "api"
|
|
parameter. All requests which come from this frontend address, will
|
|
be treated as API request.
|
|
.sp
|
|
The response is normally JSON dictionary, and at least includes the
|
|
following keys:
|
|
.INDENT 0.0
|
|
.TP
|
|
.B status
|
|
The status of the request processing. The following values are
|
|
defined:
|
|
.INDENT 7.0
|
|
.TP
|
|
.B Success
|
|
The request was successful.
|
|
.TP
|
|
.B Failure
|
|
The request was failed. No change has been made.
|
|
.UNINDENT
|
|
.TP
|
|
.B code
|
|
HTTP status code
|
|
.UNINDENT
|
|
.sp
|
|
Additionally, depending on the API endpoint, \fBdata\fP key may be
|
|
present, and its value contains the API endpoint specific data.
|
|
.sp
|
|
We wrote "normally", since nghttpx may return ordinal HTML response in
|
|
some cases where the error has occurred before reaching API endpoint
|
|
(e.g., header field is too large).
|
|
.sp
|
|
The following section describes available API endpoints.
|
|
.SS POST /api/v1beta1/backendconfig
|
|
.sp
|
|
This API replaces the current backend server settings with the
|
|
requested ones. The request method should be POST, but PUT is also
|
|
acceptable. The request body must be nghttpx configuration file
|
|
format. For configuration file format, see \fI\%FILES\fP section. The
|
|
line separator inside the request body must be single LF (0x0A).
|
|
Currently, only \fI\%backend\fP option is parsed, the
|
|
others are simply ignored. The semantics of this API is replace the
|
|
current backend with the backend options in request body. Describe
|
|
the desired set of backend severs, and nghttpx makes it happen. If
|
|
there is no \fI\%backend\fP option is found in request
|
|
body, the current set of backend is replaced with the \fI\%backend\fP option\(aqs default value, which is \fB127.0.0.1,80\fP\&.
|
|
.sp
|
|
The replacement is done instantly without breaking existing
|
|
connections or requests. It also avoids any process creation as is
|
|
the case with hot swapping with signals.
|
|
.sp
|
|
The one limitation is that only numeric IP address is allowd in
|
|
\fI\%backend\fP in request body unless "dns" parameter
|
|
is used while non numeric hostname is allowed in command\-line or
|
|
configuration file is read using \fI\%\-\-conf\fP\&.
|
|
.SS GET /api/v1beta1/configrevision
|
|
.sp
|
|
This API returns configuration revision of the current nghttpx. The
|
|
configuration revision is opaque string, and it changes after each
|
|
reloading by SIGHUP. With this API, an external application knows
|
|
that whether nghttpx has finished reloading its configuration by
|
|
comparing the configuration revisions between before and after
|
|
reloading. It is recommended to disable persistent (keep\-alive)
|
|
connection for this purpose in order to avoid to send a request using
|
|
the reused connection which may bound to an old process.
|
|
.sp
|
|
This API returns response including \fBdata\fP key. Its value is JSON
|
|
object, and it contains at least the following key:
|
|
.INDENT 0.0
|
|
.TP
|
|
.B configRevision
|
|
The configuration revision of the current nghttpx
|
|
.UNINDENT
|
|
.SH SEE ALSO
|
|
.sp
|
|
\fBnghttp(1)\fP, \fBnghttpd(1)\fP, \fBh2load(1)\fP
|
|
.SH AUTHOR
|
|
Tatsuhiro Tsujikawa
|
|
.SH COPYRIGHT
|
|
2012, 2015, 2016, Tatsuhiro Tsujikawa
|
|
.\" Generated by docutils manpage writer.
|
|
.
|