1464 lines
44 KiB
Groff
1464 lines
44 KiB
Groff
.\" Man page generated from reStructuredText.
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.
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.TH "NGHTTPX" "1" "November 29, 2015" "1.5.1-DEV" "nghttp2"
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.SH NAME
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nghttpx \- HTTP/2 proxy
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.
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.nr rst2man-indent-level 0
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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 \fI\%\-p\fP,
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\fI\%\-\-client\fP or \fI\%\-\-frontend\-no\-tls\fP are given.
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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 \fI\%\-p\fP,
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\fI\%\-\-client\fP or \fI\%\-\-frontend\-no\-tls\fP are given. To make OCSP
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stapling work, this must be 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>[:...]]
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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. If \fI\%\-s\fP or
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\fI\%\-p\fP is used, <PATTERN>s are ignored. The pattern
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matching is closely designed to ServeMux in net/http
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package of Go programming language. <PATTERN> consists
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of path, host + path or just host. The path must start
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with "\fI/\fP". If it ends with "\fI/\fP", it matches all request
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path in its subtree. To deal with the request to the
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directory without trailing slash, the path which ends
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with "\fI/\fP" also matches the request path which only lacks
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trailing \(aq\fI/\fP\(aq (e.g., path "\fI/foo/\fP" matches request path
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"\fI/foo\fP"). If it does not end with "\fI/\fP", it performs exact
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match against the request path. If host is given, it
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performs exact match against the request host. If host
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alone is given, "\fI/\fP" is appended to it, so that it
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matches all request paths under the host (e.g.,
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specifying "nghttp2.org" equals to "nghttp2.org/").
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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, breaking a tie by the order of the
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appearance in the configuration.
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.sp
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If <PATTERN> is omitted, "\fI/\fP" is used as pattern, which
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matches all request paths (catch\-all pattern). The
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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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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>)
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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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.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: \fB512\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-backend\-ipv4
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Resolve backend hostname to IPv4 address only.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-backend\-ipv6
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Resolve backend hostname to IPv6 address only.
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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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.INDENT 0.0
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.TP
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.B \-\-accept\-proxy\-protocol
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Accept PROXY protocol version 1 on frontend connection.
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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 \-\-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
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.B \-\-write\-burst=<SIZE>
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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
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.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
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.INDENT 0.0
|
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.TP
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.B \-\-worker\-read\-burst=<SIZE>
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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
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.INDENT 0.0
|
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.TP
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.B \-\-worker\-write\-rate=<SIZE>
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Set maximum average write rate on frontend connection
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per worker. Setting 0 to this option means write rate
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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
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.INDENT 0.0
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.TP
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.B \-\-worker\-write\-burst=<SIZE>
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Set maximum write burst size on frontend connection per
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worker. Setting 0 to this option means write 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
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.INDENT 0.0
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.TP
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.B \-\-worker\-frontend\-connections=<N>
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Set maximum number of simultaneous connections frontend
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accepts. Setting 0 means 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 \-\-backend\-http2\-connections\-per\-worker=<N>
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Set maximum number of backend HTTP/2 physical
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connections per worker. If pattern is used in \fI\%\-b\fP
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option, this limit is applied to each pattern group (in
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other words, each pattern group can have maximum <N>
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HTTP/2 connections). The default value is 0, which
|
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means that the value is adjusted to the number of
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backend addresses. If pattern is used, this adjustment
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is done for each pattern group.
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.UNINDENT
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.INDENT 0.0
|
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.TP
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|
.B \-\-backend\-http1\-connections\-per\-host=<N>
|
|
Set maximum number of backend concurrent HTTP/1
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connections per origin host. This option is meaningful
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when \fI\%\-s\fP option is used. The origin host is determined
|
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by authority portion of request URI (or :authority
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header field for HTTP/2). To limit the number of
|
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connections per frontend for default mode, use
|
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\fI\%\-\-backend\-http1\-connections\-per\-frontend\fP\&.
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.sp
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Default: \fB8\fP
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.UNINDENT
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.INDENT 0.0
|
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.TP
|
|
.B \-\-backend\-http1\-connections\-per\-frontend=<N>
|
|
Set maximum number of backend concurrent HTTP/1
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connections per frontend. This option is only used for
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default mode. 0 means unlimited. To limit the number
|
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of connections per host for HTTP/2 or SPDY proxy mode
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(\-s option), use \fI\%\-\-backend\-http1\-connections\-per\-host\fP\&.
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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 \-\-rlimit\-nofile=<N>
|
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Set maximum number of open files (RLIMIT_NOFILE) to <N>.
|
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If 0 is given, nghttpx does not set the limit.
|
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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 \-\-backend\-request\-buffer=<SIZE>
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Set buffer size used to store backend request.
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.sp
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Default: \fB16K\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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|
.B \-\-backend\-response\-buffer=<SIZE>
|
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Set buffer size used to store backend response.
|
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.sp
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Default: \fB16K\fP
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.UNINDENT
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.INDENT 0.0
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.TP
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|
.B \-\-fastopen=<N>
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Enables "TCP Fast Open" for the listening socket and
|
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limits the maximum length for the queue of connections
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that have not yet completed the three\-way handshake. If
|
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value is 0 then fast open is disabled.
|
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.sp
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Default: \fB0\fP
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.UNINDENT
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.SS Timeout
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.INDENT 0.0
|
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.TP
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|
.B \-\-frontend\-http2\-read\-timeout=<DURATION>
|
|
Specify read timeout for HTTP/2 and SPDY frontend
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connection.
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.sp
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Default: \fB3m\fP
|
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.UNINDENT
|
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.INDENT 0.0
|
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.TP
|
|
.B \-\-frontend\-read\-timeout=<DURATION>
|
|
Specify read timeout for HTTP/1.1 frontend connection.
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.sp
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Default: \fB1m\fP
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.UNINDENT
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.INDENT 0.0
|
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.TP
|
|
.B \-\-frontend\-write\-timeout=<DURATION>
|
|
Specify write timeout for all frontend connections.
|
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.sp
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Default: \fB30s\fP
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.UNINDENT
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.INDENT 0.0
|
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.TP
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|
.B \-\-stream\-read\-timeout=<DURATION>
|
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Specify read timeout for HTTP/2 and SPDY streams. 0
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means no timeout.
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.sp
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Default: \fB0\fP
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.UNINDENT
|
|
.INDENT 0.0
|
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.TP
|
|
.B \-\-stream\-write\-timeout=<DURATION>
|
|
Specify write timeout for HTTP/2 and SPDY streams. 0
|
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means no timeout.
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.sp
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Default: \fB0\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-read\-timeout=<DURATION>
|
|
Specify read timeout for backend connection.
|
|
.sp
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|
Default: \fB1m\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-write\-timeout=<DURATION>
|
|
Specify write timeout for backend connection.
|
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.sp
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|
Default: \fB30s\fP
|
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.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-keep\-alive\-timeout=<DURATION>
|
|
Specify keep\-alive timeout for backend connection.
|
|
.sp
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|
Default: \fB2s\fP
|
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.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: \fB0\fP
|
|
.UNINDENT
|
|
.SS SSL/TLS
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-ciphers=<SUITE>
|
|
Set allowed cipher list. The format of the string is
|
|
described in OpenSSL ciphers(1).
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-k, \-\-insecure
|
|
Don\(aqt verify backend server\(aqs certificate if \fI\%\-p\fP,
|
|
\fI\%\-\-client\fP or \fI\%\-\-http2\-bridge\fP are given and
|
|
\fI\%\-\-backend\-no\-tls\fP is not given.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-cacert=<PATH>
|
|
Set path to trusted CA certificate file if \fI\%\-p\fP, \fI\%\-\-client\fP
|
|
or \fI\%\-\-http2\-bridge\fP are given and \fI\%\-\-backend\-no\-tls\fP is not
|
|
given. The file must be in PEM format. It can contain
|
|
multiple certificates. If the linked OpenSSL is
|
|
configured to load system wide certificates, they are
|
|
loaded at startup regardless of this option.
|
|
.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>
|
|
Specify additional certificate and private key file.
|
|
nghttpx will choose certificates based on the hostname
|
|
indicated by client using TLS SNI extension. This
|
|
option can be used multiple times. To make OCSP
|
|
stapling work, <CERTPATH> must be absolute path.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-tls\-sni\-field=<HOST>
|
|
Explicitly set the content of the TLS SNI extension.
|
|
This will default to the backend HOST name.
|
|
.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,spdy/3.1,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\-proto\-list=<LIST>
|
|
Comma delimited list of SSL/TLS protocol to be enabled.
|
|
The following protocols are available: TLSv1.2, TLSv1.1
|
|
and TLSv1.0. The name matching is done in
|
|
case\-insensitive manner. The parameter must be
|
|
delimited by a single comma only and any white spaces
|
|
are treated as a part of protocol string. If the
|
|
protocol list advertised by client does not overlap this
|
|
list, you will receive the error message "unknown
|
|
protocol".
|
|
.sp
|
|
Default: \fBTLSv1.2,TLSv1.1\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>
|
|
Specify address of memcached server to store session
|
|
cache. This enables shared TLS ticket key between
|
|
multiple nghttpx instances. nghttpx does not set TLS
|
|
ticket key to memcached. The external ticket key
|
|
generator is required. nghttpx just gets TLS ticket
|
|
keys from memcached, and use them, possibly replacing
|
|
current set of keys. It is up to extern TLS ticket key
|
|
generator to rotate keys frequently. See "TLS SESSION
|
|
TICKET RESUMPTION" section in manual page to know the
|
|
data format in memcached entry.
|
|
.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 \-\-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 \-\-no\-ocsp
|
|
Disable OCSP stapling.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-tls\-session\-cache\-memcached=<HOST>,<PORT>
|
|
Specify address of memcached server to store session
|
|
cache. This enables shared session cache between
|
|
multiple nghttpx instances.
|
|
.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
|
|
.SS HTTP/2 and SPDY
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-c, \-\-http2\-max\-concurrent\-streams=<N>
|
|
Set the maximum number of the concurrent streams in one
|
|
HTTP/2 and SPDY session.
|
|
.sp
|
|
Default: \fB100\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-window\-bits=<N>
|
|
Sets the per\-stream initial window size of HTTP/2 SPDY
|
|
frontend connection. For HTTP/2, the size is 2**<N>\-1.
|
|
For SPDY, the size is 2**<N>.
|
|
.sp
|
|
Default: \fB16\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-http2\-connection\-window\-bits=<N>
|
|
Sets the per\-connection window size of HTTP/2 and SPDY
|
|
frontend connection. For HTTP/2, the size is
|
|
2**<N>\-1. For SPDY, the size is 2**<N>.
|
|
.sp
|
|
Default: \fB16\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-frontend\-no\-tls
|
|
Disable SSL/TLS on frontend connections.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-window\-bits=<N>
|
|
Sets the initial window size of HTTP/2 backend
|
|
connection to 2**<N>\-1.
|
|
.sp
|
|
Default: \fB16\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-http2\-connection\-window\-bits=<N>
|
|
Sets the per\-connection window size of HTTP/2 backend
|
|
connection to 2**<N>\-1.
|
|
.sp
|
|
Default: \fB16\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-backend\-no\-tls
|
|
Disable SSL/TLS on backend connections.
|
|
.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 (which implies \fI\%\-\-http2\-bridge\fP or \fI\%\-\-client\fP mode).
|
|
In this case, server push from backend session is
|
|
relayed to frontend, and server push via Link header
|
|
field is also supported. HTTP SPDY frontend does not
|
|
support server push.
|
|
.UNINDENT
|
|
.SS Mode
|
|
.INDENT 0.0
|
|
.TP
|
|
.B (default mode)
|
|
Accept HTTP/2, SPDY and HTTP/1.1 over SSL/TLS. If
|
|
\fI\%\-\-frontend\-no\-tls\fP is used, accept HTTP/2 and HTTP/1.1.
|
|
The incoming HTTP/1.1 connection can be upgraded to
|
|
HTTP/2 through HTTP Upgrade. The protocol to the
|
|
backend is HTTP/1.1.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-s, \-\-http2\-proxy
|
|
Like default mode, but enable secure proxy mode.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-http2\-bridge
|
|
Like default mode, but communicate with the backend in
|
|
HTTP/2 over SSL/TLS. Thus the incoming all connections
|
|
are converted to HTTP/2 connection and relayed to the
|
|
backend. See \fI\%\-\-backend\-http\-proxy\-uri\fP option if you are
|
|
behind the proxy and want to connect to the outside
|
|
HTTP/2 proxy.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-client
|
|
Accept HTTP/2 and HTTP/1.1 without SSL/TLS. The
|
|
incoming HTTP/1.1 connection can be upgraded to HTTP/2
|
|
connection through HTTP Upgrade. The protocol to the
|
|
backend is HTTP/2. To use nghttpx as a forward proxy,
|
|
use \fI\%\-p\fP option instead.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-p, \-\-client\-proxy
|
|
Like \fI\%\-\-client\fP option, but it also requires the request
|
|
path from frontend must be an absolute URI, suitable for
|
|
use as a forward proxy.
|
|
.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
|
|
$ssl_cipher: cipher used for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$ssl_protocol: protocol for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$ssl_session_id: session ID for SSL/TLS connection.
|
|
.IP \(bu 2
|
|
$ssl_session_reused: "r" if SSL/TLS session was
|
|
reused. Otherwise, "."
|
|
.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 \-\-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\-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 on \fI\%\-\-http2\-bridge\fP,
|
|
\fI\%\-\-client\fP and default mode. For \fI\%\-\-http2\-proxy\fP and
|
|
\fI\%\-\-client\-proxy\fP mode, 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 on
|
|
\fI\%\-\-http2\-bridge\fP, \fI\%\-\-client\fP and default mode. For
|
|
\fI\%\-\-http2\-proxy\fP and \fI\%\-\-client\-proxy\fP mode, 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 \-\-header\-field\-buffer=<SIZE>
|
|
Set maximum buffer size for incoming HTTP header field
|
|
list. This is the sum of header name and value in
|
|
bytes.
|
|
.sp
|
|
Default: \fB64K\fP
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-max\-header\-fields=<N>
|
|
Set maximum number of incoming HTTP header fields, which
|
|
appear in one request or response header field list.
|
|
.sp
|
|
Default: \fB100\fP
|
|
.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
|
|
.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>.
|
|
.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
|
|
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.
|
|
.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 SIGUSR1
|
|
Reopen log files.
|
|
.TP
|
|
.B SIGUSR2
|
|
Fork and execute nghttpx. It will execute the binary in the same
|
|
path with same command\-line arguments and environment variables.
|
|
After new process comes up, sending SIGQUIT to the original process
|
|
to perform hot swapping.
|
|
.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 (which implies \fI\%\-\-http2\-bridge\fP or \fI\%\-\-client\fP).
|
|
In this case, in addition to server push via Link header field, server
|
|
push from backend is relayed to frontend HTTP/2 session.
|
|
.sp
|
|
HTTP/2 server push will be disabled if \fI\%\-\-http2\-proxy\fP or
|
|
\fI\%\-\-client\-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.
|
|
.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.
|
|
.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
|
|
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 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.
|
|
.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.
|
|
.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
|
|
.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
|
|
|
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App.new
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.SH SEE ALSO
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.sp
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\fInghttp(1)\fP, \fInghttpd(1)\fP, \fIh2load(1)\fP
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.SH AUTHOR
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Tatsuhiro Tsujikawa
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.SH COPYRIGHT
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2012, 2015, Tatsuhiro Tsujikawa
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.\" Generated by docutils manpage writer.
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.
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