fastcgi

Documentation

Overview

Package fastcgi has middleware that acts as a FastCGI client. Requests that get forwarded to FastCGI stop the middleware execution chain. The most common use for this package is to serve PHP websites via php-fpm.

Index

• Constants
• Variables
• type FCGIClient
  • func Dial(network, address string) (fcgi *FCGIClient, err error)
  • func DialWithDialer(network, address string, dialer net.Dialer) (fcgi *FCGIClient, err error)
  • func (c *FCGIClient) Close()
  • func (c *FCGIClient) Do(p map[string]string, req io.Reader) (r io.Reader, err error)
  • func (c *FCGIClient) Get(p map[string]string) (resp *http.Response, err error)
  • func (c *FCGIClient) Head(p map[string]string) (resp *http.Response, err error)
  • func (c *FCGIClient) Options(p map[string]string) (resp *http.Response, err error)
  • func (c *FCGIClient) Post(p map[string]string, method string, bodyType string, body io.Reader, l int) (resp *http.Response, err error)
  • func (c *FCGIClient) PostFile(p map[string]string, data url.Values, file map[string]string) (resp *http.Response, err error)
  • func (c *FCGIClient) PostForm(p map[string]string, data url.Values) (resp *http.Response, err error)
  • func (c *FCGIClient) Request(p map[string]string, req io.Reader) (resp *http.Response, err error)
• type Handler
  • func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error)
• type LogError
  • func (l LogError) Error() string
• type Rule
  • func (r Rule) AllowedPath(requestPath string) bool

Constants

const (
	// BeginRequest is the begin request flag.
	BeginRequest uint8 = iota + 1
	// AbortRequest is the abort request flag.
	AbortRequest
	// EndRequest is the end request flag.
	EndRequest
	// Params is the parameters flag.
	Params
	// Stdin is the standard input flag.
	Stdin
	// Stdout is the standard output flag.
	Stdout
	// Stderr is the standard error flag.
	Stderr
	// Data is the data flag.
	Data
	// GetValues is the get values flag.
	GetValues
	// GetValuesResult is the get values result flag.
	GetValuesResult
	// UnknownType is the unknown type flag.
	UnknownType
	// MaxType is the maximum type flag.
	MaxType = UnknownType
)

const (
	// Responder is the responder flag.
	Responder uint8 = iota + 1
	// Authorizer is the authorizer flag.
	Authorizer
	// Filter is the filter flag.
	Filter
)

const (
	// RequestComplete is the completed request flag.
	RequestComplete uint8 = iota
	// CantMultiplexConns is the multiplexed connections flag.
	CantMultiplexConns
	// Overloaded is the overloaded flag.
	Overloaded
	// UnknownRole is the unknown role flag.
	UnknownRole
)

const (
	// MaxConns is the maximum connections flag.
	MaxConns string = "MAX_CONNS"
	// MaxRequests is the maximum requests flag.
	MaxRequests string = "MAX_REQS"
	// MultiplexConns is the multiplex connections flag.
	MultiplexConns string = "MPXS_CONNS"
)

const FCGIHeaderLen uint8 = 8

FCGIHeaderLen describes header length.

const FCGIKeepConn uint8 = 1

FCGIKeepConn describes keep connection mode.

const FCGIListenSockFileno uint8 = 0

FCGIListenSockFileno describes listen socket file number.

const FCGINullRequestID uint8 = 0

FCGINullRequestID describes the null request ID.

const Version1 uint8 = 1

Version1 describes the version.

Variables

var (

	// ErrIndexMissingSplit describes an index configuration error.
	ErrIndexMissingSplit = errors.New("configured index file(s) must include split value")
)

Types

type FCGIClient

type FCGIClient struct {
	// contains filtered or unexported fields
}

FCGIClient implements a FastCGI client, which is a standard for interfacing external applications with Web servers.

func Dial

func Dial(network, address string) (fcgi *FCGIClient, err error)

Dial connects to the fcgi responder at the specified network address, using default net.Dialer. See func net.Dial for a description of the network and address parameters.

func DialWithDialer

func DialWithDialer(network, address string, dialer net.Dialer) (fcgi *FCGIClient, err error)

DialWithDialer connects to the fcgi responder at the specified network address, using custom net.Dialer. See func net.Dial for a description of the network and address parameters.

func (*FCGIClient) Close

func (c *FCGIClient) Close()

Close closes fcgi connnection

func (*FCGIClient) Do

func (c *FCGIClient) Do(p map[string]string, req io.Reader) (r io.Reader, err error)

Do made the request and returns a io.Reader that translates the data read from fcgi responder out of fcgi packet before returning it.

func (*FCGIClient) Get

func (c *FCGIClient) Get(p map[string]string) (resp *http.Response, err error)

Get issues a GET request to the fcgi responder.

func (*FCGIClient) Head

func (c *FCGIClient) Head(p map[string]string) (resp *http.Response, err error)

Head issues a HEAD request to the fcgi responder.

func (*FCGIClient) Options

func (c *FCGIClient) Options(p map[string]string) (resp *http.Response, err error)

Options issues an OPTIONS request to the fcgi responder.

func (*FCGIClient) Post

func (c *FCGIClient) Post(p map[string]string, method string, bodyType string, body io.Reader, l int) (resp *http.Response, err error)

Post issues a POST request to the fcgi responder. with request body in the format that bodyType specified

func (*FCGIClient) PostFile

func (c *FCGIClient) PostFile(p map[string]string, data url.Values, file map[string]string) (resp *http.Response, err error)

PostFile issues a POST to the fcgi responder in multipart(RFC 2046) standard, with form as a string key to a list values (url.Values), and/or with file as a string key to a list file path.

func (*FCGIClient) PostForm

func (c *FCGIClient) PostForm(p map[string]string, data url.Values) (resp *http.Response, err error)

PostForm issues a POST to the fcgi responder, with form as a string key to a list values (url.Values)

func (*FCGIClient) Request

func (c *FCGIClient) Request(p map[string]string, req io.Reader) (resp *http.Response, err error)

Request returns a HTTP Response with Header and Body from fcgi responder

type Handler

type Handler struct {
	Next    middleware.Handler
	Rules   []Rule
	Root    string
	AbsRoot string // same as root, but absolute path
	FileSys http.FileSystem

	// These are sent to CGI scripts in env variables
	SoftwareName    string
	SoftwareVersion string
	ServerName      string
	ServerPort      string
}

Handler is a middleware type that can handle requests as a FastCGI client.

func (Handler) ServeHTTP

func (h Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error)

ServeHTTP satisfies the middleware.Handler interface.

type LogError

type LogError string

LogError is a non fatal error that allows requests to go through.

func (LogError) Error

func (l LogError) Error() string

Error satisfies error interface.

type Rule

type Rule struct {
	// The base path to match. Required.
	Path string

	// The address of the FastCGI server. Required.
	Address string

	// Always process files with this extension with fastcgi.
	Ext string

	// The path in the URL will be split into two, with the first piece ending
	// with the value of SplitPath. The first piece will be assumed as the
	// actual resource (CGI script) name, and the second piece will be set to
	// PATH_INFO for the CGI script to use.
	SplitPath string

	// If the URL ends with '/' (which indicates a directory), these index
	// files will be tried instead.
	IndexFiles []string

	// Environment Variables
	EnvVars [][2]string

	// Ignored paths
	IgnoredSubPaths []string
}

Rule represents a FastCGI handling rule.

func (Rule) AllowedPath

func (r Rule) AllowedPath(requestPath string) bool

AllowedPath checks if requestPath is not an ignored path.