caddyhttp

package
v2.0.0-beta6 Latest Latest
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 Go to latest Published: Oct 14, 2019 License: Apache-2.0 Imports: 27 Imported by: 777

Documentation

Index

Constants

View Source 
const (
	// DefaultHTTPPort is the default port for HTTP.
	DefaultHTTPPort = 80

	// DefaultHTTPSPort is the default port for HTTPS.
	DefaultHTTPSPort = 443
)
View Source 
const (
	// For referencing the server instance
	ServerCtxKey caddy.CtxKey = "server"

	// For the request's variable table
	VarCtxKey caddy.CtxKey = "vars"

	// For the unmodified URL that originally came in with a request
	OriginalURLCtxKey caddy.CtxKey = "original_url"
)

Context keys for HTTP request context values.

View Source 
const ErrorCtxKey = caddy.CtxKey("handler_chain_error")

ErrorCtxKey is the context key to use when storing an error (for use with context.Context).

Variables

View Source 
var DefaultMaxRehandles = 3

DefaultMaxRehandles is the maximum number of rehandles to allow, if not specified explicitly.

View Source 
var ErrNotImplemented = fmt.Errorf("method not implemented")

ErrNotImplemented is returned when an underlying ResponseWriter does not implement the required method.

View Source 
var ErrRehandle = fmt.Errorf("rehandling request")

ErrRehandle is a special error value that Handlers should return from their ServeHTTP() method if the request is to be re-processed. This error value is a sentinel value that should not be wrapped or modified.

Functions

func StatusCodeMatches 

func StatusCodeMatches(actual, configured int) bool

StatusCodeMatches returns true if a real HTTP status code matches the configured status code, which may be either a real HTTP status code or an integer representing a class of codes (e.g. 4 for all 4xx statuses).

Types

type App 

type App struct {
	HTTPPort    int                `json:"http_port,omitempty"`
	HTTPSPort   int                `json:"https_port,omitempty"`
	GracePeriod caddy.Duration     `json:"grace_period,omitempty"`
	Servers     map[string]*Server `json:"servers,omitempty"`
	// contains filtered or unexported fields
}

App is the HTTP app for Caddy.

func (App) CaddyModule 

func (App) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (*App) Provision 

func (app *App) Provision(ctx caddy.Context) error

Provision sets up the app.

func (*App) Start 

func (app *App) Start() error

Start runs the app. It sets up automatic HTTPS if enabled.

func (*App) Stop 

func (app *App) Stop() error

Stop gracefully shuts down the HTTP server.

func (*App) Validate 

func (app *App) Validate() error

Validate ensures the app's configuration is valid.

type AutoHTTPSConfig 

type AutoHTTPSConfig struct {
	// If true, automatic HTTPS will be entirely disabled.
	Disabled bool `json:"disable,omitempty"`

	// If true, only automatic HTTP->HTTPS redirects will
	// be disabled.
	DisableRedir bool `json:"disable_redirects,omitempty"`

	// Hosts/domain names listed here will not be included
	// in automatic HTTPS (they will not have certificates
	// loaded nor redirects applied).
	Skip []string `json:"skip,omitempty"`

	// Hosts/domain names listed here will still be enabled
	// for automatic HTTPS (unless in the Skip list), except
	// that certificates will not be provisioned and managed
	// for these names.
	SkipCerts []string `json:"skip_certificates,omitempty"`

	// By default, automatic HTTPS will obtain and renew
	// certificates for qualifying hostnames. However, if
	// a certificate with a matching SAN is already loaded
	// into the cache, certificate management will not be
	// enabled. To force automated certificate management
	// regardless of loaded certificates, set this to true.
	IgnoreLoadedCerts bool `json:"ignore_loaded_certificates,omitempty"`
}

AutoHTTPSConfig is used to disable automatic HTTPS or certain aspects of it for a specific server.

func (AutoHTTPSConfig) Skipped 

func (ahc AutoHTTPSConfig) Skipped(name string, skipSlice []string) bool

Skipped returns true if name is in skipSlice, which should be one of the Skip* fields on ahc.

type HTTPErrorConfig 

type HTTPErrorConfig struct {
	Routes RouteList `json:"routes,omitempty"`
}

HTTPErrorConfig determines how to handle errors from the HTTP handlers.

type HTTPInterfaces 

type HTTPInterfaces interface {
	http.ResponseWriter
	http.Pusher
	http.Flusher
	http.Hijacker
}

HTTPInterfaces mix all the interfaces that middleware ResponseWriters need to support.

type Handler 

type Handler interface {
	ServeHTTP(http.ResponseWriter, *http.Request) error
}

Handler is like http.Handler except ServeHTTP may return an error.

If any handler encounters an error, it should be returned for proper handling. Return values should be propagated down the middleware chain by returning it unchanged. Returned errors should not be re-wrapped if they are already HandlerError values.

type HandlerError 

type HandlerError struct {
	Err             error    // the original error value and message
	StatusCode      int      // the HTTP status code to associate with this error
	Message         string   // an optional message that can be shown to the user
	Recommendations []string // an optional list of things to try to resolve the error

	ID    string // generated; for identifying this error in logs
	Trace string // produced from call stack
}

HandlerError is a serializable representation of an error from within an HTTP handler.

func Error 

func Error(statusCode int, err error) HandlerError

Error is a convenient way for a Handler to populate the essential fields of a HandlerError. If err is itself a HandlerError, then any essential fields that are not set will be populated.

func (HandlerError) Error 

func (e HandlerError) Error() string

type HandlerFunc 

type HandlerFunc func(http.ResponseWriter, *http.Request) error

HandlerFunc is a convenience type like http.HandlerFunc.

func (HandlerFunc) ServeHTTP 

func (f HandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request) error

ServeHTTP implements the Handler interface.

type MatchHeader 

type MatchHeader http.Header

MatchHeader matches requests by header fields.

func (MatchHeader) CaddyModule 

func (MatchHeader) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchHeader) Match 

func (m MatchHeader) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchHeader) UnmarshalCaddyfile 

func (m *MatchHeader) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchHeaderRE 

type MatchHeaderRE map[string]*MatchRegexp

MatchHeaderRE matches requests by a regular expression on header fields.

func (MatchHeaderRE) CaddyModule 

func (MatchHeaderRE) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchHeaderRE) Match 

func (m MatchHeaderRE) Match(r *http.Request) bool

Match returns true if r matches m.

func (MatchHeaderRE) Provision 

func (m MatchHeaderRE) Provision(ctx caddy.Context) error

Provision compiles m's regular expressions.

func (*MatchHeaderRE) UnmarshalCaddyfile 

func (m *MatchHeaderRE) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

func (MatchHeaderRE) Validate 

func (m MatchHeaderRE) Validate() error

Validate validates m's regular expressions.

type MatchHost 

type MatchHost []string

MatchHost matches requests by the Host value.

func (MatchHost) CaddyModule 

func (MatchHost) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchHost) Match 

func (m MatchHost) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchHost) UnmarshalCaddyfile 

func (m *MatchHost) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchMethod 

type MatchMethod []string

MatchMethod matches requests by the method.

func (MatchMethod) CaddyModule 

func (MatchMethod) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchMethod) Match 

func (m MatchMethod) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchMethod) UnmarshalCaddyfile 

func (m *MatchMethod) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchNegate 

type MatchNegate struct {
	MatchersRaw map[string]json.RawMessage `json:"-"`

	Matchers MatcherSet `json:"-"`
}

MatchNegate matches requests by negating its matchers' results.

func (MatchNegate) CaddyModule 

func (MatchNegate) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchNegate) MarshalJSON 

func (m MatchNegate) MarshalJSON() ([]byte, error)

MarshalJSON marshals m's matchers.

func (MatchNegate) Match 

func (m MatchNegate) Match(r *http.Request) bool

Match returns true if r matches m. Since this matcher negates the embedded matchers, false is returned if any of its matchers match.

func (*MatchNegate) Provision 

func (m *MatchNegate) Provision(ctx caddy.Context) error

Provision loads the matcher modules to be negated.

func (*MatchNegate) UnmarshalCaddyfile 

func (m *MatchNegate) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

func (*MatchNegate) UnmarshalJSON 

func (m *MatchNegate) UnmarshalJSON(data []byte) error

UnmarshalJSON unmarshals data into m's unexported map field. This is done because we cannot embed the map directly into the struct, but we need a struct because we need another field just for the provisioned modules.

type MatchPath 

type MatchPath []string

MatchPath matches requests by the URI's path.

func (MatchPath) CaddyModule 

func (MatchPath) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchPath) Match 

func (m MatchPath) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchPath) UnmarshalCaddyfile 

func (m *MatchPath) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchPathRE 

type MatchPathRE struct{ MatchRegexp }

MatchPathRE matches requests by a regular expression on the URI's path.

func (MatchPathRE) CaddyModule 

func (MatchPathRE) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchPathRE) Match 

func (m MatchPathRE) Match(r *http.Request) bool

Match returns true if r matches m.

type MatchProtocol 

type MatchProtocol string

MatchProtocol matches requests by protocol.

func (MatchProtocol) CaddyModule 

func (MatchProtocol) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchProtocol) Match 

func (m MatchProtocol) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchProtocol) UnmarshalCaddyfile 

func (m *MatchProtocol) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchQuery 

type MatchQuery url.Values

MatchQuery matches requests by URI's query string.

func (MatchQuery) CaddyModule 

func (MatchQuery) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchQuery) Match 

func (m MatchQuery) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchQuery) UnmarshalCaddyfile 

func (m *MatchQuery) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchRegexp 

type MatchRegexp struct {
	Name    string `json:"name,omitempty"`
	Pattern string `json:"pattern"`
	// contains filtered or unexported fields
}

MatchRegexp is an embeddable type for matching using regular expressions.

func (*MatchRegexp) Match 

func (mre *MatchRegexp) Match(input string, repl caddy.Replacer, scope string) bool

Match returns true if input matches the compiled regular expression in mre. It sets values on the replacer repl associated with capture groups, using the given scope (namespace). Capture groups stored to repl will take on the name "http.matchers.<scope>.<mre.Name>.<N>" where <N> is the name or number of the capture group.

func (*MatchRegexp) Provision 

func (mre *MatchRegexp) Provision(caddy.Context) error

Provision compiles the regular expression.

func (*MatchRegexp) UnmarshalCaddyfile 

func (mre *MatchRegexp) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

func (*MatchRegexp) Validate 

func (mre *MatchRegexp) Validate() error

Validate ensures mre is set up correctly.

type MatchRemoteIP 

type MatchRemoteIP struct {
	Ranges []string `json:"ranges,omitempty"`
	// contains filtered or unexported fields
}

MatchRemoteIP matches requests by client IP (or CIDR range).

func (MatchRemoteIP) CaddyModule 

func (MatchRemoteIP) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchRemoteIP) Match 

func (m MatchRemoteIP) Match(r *http.Request) bool

Match returns true if r matches m.

func (*MatchRemoteIP) Provision 

func (m *MatchRemoteIP) Provision(ctx caddy.Context) error

Provision parses m's IP ranges, either from IP or CIDR expressions.

func (*MatchRemoteIP) UnmarshalCaddyfile 

func (m *MatchRemoteIP) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile implements caddyfile.Unmarshaler.

type MatchStarlarkExpr 

type MatchStarlarkExpr string

MatchStarlarkExpr matches requests by evaluating a Starlark expression.

func (MatchStarlarkExpr) CaddyModule 

func (MatchStarlarkExpr) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (MatchStarlarkExpr) Match 

func (m MatchStarlarkExpr) Match(r *http.Request) bool

Match returns true if r matches m.

type MatchTable 

type MatchTable string // TODO: finish implementing

MatchTable matches requests by values in the table.

type MatcherSet 

type MatcherSet []RequestMatcher

MatcherSet is a set of matchers which must all match in order for the request to be matched successfully.

func (MatcherSet) Match 

func (mset MatcherSet) Match(r *http.Request) bool

Match returns true if the request matches all matchers in mset.

type MatcherSets 

type MatcherSets []MatcherSet

MatcherSets is a group of matcher sets capable of checking whether a request matches any of the sets.

func (MatcherSets) AnyMatch 

func (mss MatcherSets) AnyMatch(req *http.Request) bool

AnyMatch returns true if req matches any of the matcher sets in mss or if there are no matchers, in which case the request always matches.

type Middleware 

type Middleware func(HandlerFunc) HandlerFunc

Middleware chains one Handler to the next by being passed the next Handler in the chain.

type MiddlewareHandler 

type MiddlewareHandler interface {
	ServeHTTP(http.ResponseWriter, *http.Request, Handler) error
}

MiddlewareHandler is like Handler except it takes as a third argument the next handler in the chain. The next handler will never be nil, but may be a no-op handler if this is the last handler in the chain. Handlers which act as middleware should call the next handler's ServeHTTP method so as to propagate the request down the chain properly. Handlers which act as responders (content origins) need not invoke the next handler, since the last handler in the chain should be the first to write the response.

type RawMatcherSets 

type RawMatcherSets []map[string]json.RawMessage

RawMatcherSets is a group of matcher sets in their raw, JSON form.

func (RawMatcherSets) Setup 

func (rm RawMatcherSets) Setup(ctx caddy.Context) (MatcherSets, error)

Setup sets up all matcher sets by loading each matcher module and returning the group of provisioned matcher sets.

type RequestMatcher 

type RequestMatcher interface {
	Match(*http.Request) bool
}

RequestMatcher is a type that can match to a request. A route matcher MUST NOT modify the request, with the only exception being its context.

type ResponseMatcher 

type ResponseMatcher struct {
	// If set, one of these status codes would be required.
	// A one-digit status can be used to represent all codes
	// in that class (e.g. 3 for all 3xx codes).
	StatusCode []int `json:"status_code,omitempty"`

	// If set, each header specified must be one of the specified values.
	Headers http.Header `json:"headers,omitempty"`
}

ResponseMatcher is a type which can determine if a given response status code and its headers match some criteria.

func (ResponseMatcher) Match 

func (rm ResponseMatcher) Match(statusCode int, hdr http.Header) bool

Match returns true if the given statusCode and hdr match rm.

type ResponseRecorder 

type ResponseRecorder interface {
	HTTPInterfaces
	Status() int
	Buffer() *bytes.Buffer
	Buffered() bool
	Size() int
}

ResponseRecorder is a http.ResponseWriter that records responses instead of writing them to the client.

func NewResponseRecorder 

func NewResponseRecorder(w http.ResponseWriter, buf *bytes.Buffer, shouldBuffer func(status int) bool) ResponseRecorder

NewResponseRecorder returns a new ResponseRecorder that can be used instead of a real http.ResponseWriter. The recorder is useful for middlewares which need to buffer a responder's response and process it in its entirety before actually allowing the response to be written. Of course, this has a performance overhead, but sometimes there is no way to avoid buffering the whole response. Still, if at all practical, middlewares should strive to stream responses by wrapping Write and WriteHeader methods instead of buffering whole response bodies.

Recorders optionally buffer the response. When the headers are to be written, shouldBuffer will be called with the status code that is being written. The rest of the headers can be read from w.Header(). If shouldBuffer returns true, the response will be buffered. You can know the response was buffered if the Buffered() method returns true. If the response was not buffered, Buffered() will return false and that means the response bypassed the recorder and was written directly to the underlying writer. If shouldBuffer is nil, the response will never be buffered (it will always be streamed directly), and buf can also safely be nil.

Before calling this function in a middleware handler, make a new buffer or obtain one from a pool (use the sync.Pool) type. Using a pool is generally recommended for performance gains; do profiling to ensure this is the case. If using a pool, be sure to reset the buffer before using it.

The returned recorder can be used in place of w when calling the next handler in the chain. When that handler returns, you can read the status code from the recorder's Status() method. The response body fills buf if it was buffered, and the headers are available via w.Header().

type ResponseWriterWrapper 

type ResponseWriterWrapper struct {
	http.ResponseWriter
}

ResponseWriterWrapper wraps an underlying ResponseWriter and promotes its Pusher/Flusher/Hijacker methods as well. To use this type, embed a pointer to it within your own struct type that implements the http.ResponseWriter interface, then call methods on the embedded value. You can make sure your type wraps correctly by asserting that it implements the HTTPInterfaces interface.

func (*ResponseWriterWrapper) Flush 

func (rww *ResponseWriterWrapper) Flush()

Flush implements http.Flusher. It simply calls the underlying ResponseWriter's Flush method if there is one.

func (*ResponseWriterWrapper) Hijack 

func (rww *ResponseWriterWrapper) Hijack() (net.Conn, *bufio.ReadWriter, error)

Hijack implements http.Hijacker. It simply calls the underlying ResponseWriter's Hijack method if there is one, or returns ErrNotImplemented otherwise.

func (*ResponseWriterWrapper) Push 

func (rww *ResponseWriterWrapper) Push(target string, opts *http.PushOptions) error

Push implements http.Pusher. It simply calls the underlying ResponseWriter's Push method if there is one, or returns ErrNotImplemented otherwise.

type Route 

type Route struct {
	Group          string            `json:"group,omitempty"`
	MatcherSetsRaw RawMatcherSets    `json:"match,omitempty"`
	HandlersRaw    []json.RawMessage `json:"handle,omitempty"`
	Terminal       bool              `json:"terminal,omitempty"`

	// decoded values
	MatcherSets MatcherSets         `json:"-"`
	Handlers    []MiddlewareHandler `json:"-"`
}

Route represents a set of matching rules, middlewares, and a responder for handling HTTP requests.

func (Route) Empty 

func (r Route) Empty() bool

Empty returns true if the route has all zero/default values.

type RouteList 

type RouteList []Route

RouteList is a list of server routes that can create a middleware chain.

func (RouteList) BuildCompositeRoute 

func (routes RouteList) BuildCompositeRoute(req *http.Request) Handler

BuildCompositeRoute creates a chain of handlers by applying all of the matching routes.

func (RouteList) Provision 

func (routes RouteList) Provision(ctx caddy.Context) error

Provision sets up all the routes by loading the modules.

type Server 

type Server struct {
	Listen            []string                    `json:"listen,omitempty"`
	ReadTimeout       caddy.Duration              `json:"read_timeout,omitempty"`
	ReadHeaderTimeout caddy.Duration              `json:"read_header_timeout,omitempty"`
	WriteTimeout      caddy.Duration              `json:"write_timeout,omitempty"`
	IdleTimeout       caddy.Duration              `json:"idle_timeout,omitempty"`
	MaxHeaderBytes    int                         `json:"max_header_bytes,omitempty"`
	Routes            RouteList                   `json:"routes,omitempty"`
	Errors            *HTTPErrorConfig            `json:"errors,omitempty"`
	TLSConnPolicies   caddytls.ConnectionPolicies `json:"tls_connection_policies,omitempty"`
	AutoHTTPS         *AutoHTTPSConfig            `json:"automatic_https,omitempty"`
	MaxRehandles      *int                        `json:"max_rehandles,omitempty"`
	StrictSNIHost     *bool                       `json:"strict_sni_host,omitempty"`

	// This field is not subject to compatibility promises
	ExperimentalHTTP3 bool `json:"experimental_http3,omitempty"`
	// contains filtered or unexported fields
}

Server is an HTTP server.

func (*Server) ServeHTTP 

func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request)

ServeHTTP is the entry point for all HTTP requests.

type StaticError 

type StaticError struct {
	Error      string     `json:"error,omitempty"`
	StatusCode WeakString `json:"status_code,omitempty"`
}

StaticError implements a simple handler that returns an error.

func (StaticError) CaddyModule 

func (StaticError) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (StaticError) ServeHTTP 

func (e StaticError) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error

type StaticResponse 

type StaticResponse struct {
	StatusCode WeakString  `json:"status_code,omitempty"`
	Headers    http.Header `json:"headers,omitempty"`
	Body       string      `json:"body,omitempty"`
	Close      bool        `json:"close,omitempty"`
}

StaticResponse implements a simple responder for static responses.

func (StaticResponse) CaddyModule 

func (StaticResponse) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (StaticResponse) ServeHTTP 

func (s StaticResponse) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error

func (*StaticResponse) UnmarshalCaddyfile 

func (s *StaticResponse) UnmarshalCaddyfile(d *caddyfile.Dispenser) error

UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax: 

respond [<matcher>] <status> {
    body <text>
    close
}

type Subroute 

type Subroute struct {
	Routes RouteList `json:"routes,omitempty"`
}

Subroute implements a handler that compiles and executes routes. This is useful for a batch of routes that all inherit the same matchers, or for routes with matchers that must be have deferred evaluation (e.g. if they depend on placeholders created by other matchers that need to be evaluated first).

func (Subroute) CaddyModule 

func (Subroute) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (*Subroute) Provision 

func (sr *Subroute) Provision(ctx caddy.Context) error

Provision sets up subrouting.

func (*Subroute) ServeHTTP 

func (sr *Subroute) ServeHTTP(w http.ResponseWriter, r *http.Request, _ Handler) error

type VarsMatcher 

type VarsMatcher map[string]string

VarsMatcher is an HTTP request matcher which can match requests based on variables in the context.

func (VarsMatcher) CaddyModule 

func (VarsMatcher) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (VarsMatcher) Match 

func (m VarsMatcher) Match(r *http.Request) bool

Match matches a request based on variables in the context.

type VarsMiddleware 

type VarsMiddleware map[string]string

VarsMiddleware is an HTTP middleware which sets variables in the context, mainly for use by placeholders.

func (VarsMiddleware) CaddyModule 

func (VarsMiddleware) CaddyModule() caddy.ModuleInfo

CaddyModule returns the Caddy module information.

func (VarsMiddleware) ServeHTTP 

func (t VarsMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next Handler) error

type WeakString 

type WeakString string

WeakString is a type that unmarshals any JSON value as a string literal, with the following exceptions: 1) actual string values are decoded as strings, and 2) null is decoded as empty string and provides methods for getting the value as various primitive types. However, using this type removes any type safety as far as deserializing JSON is concerned.

func (WeakString) Bool 

func (ws WeakString) Bool() bool

Bool returns ws as a boolean. If ws is not a boolean, false is returned.

func (WeakString) Float64 

func (ws WeakString) Float64() float64

Float64 returns ws as a float64. If ws is not a float value, the zero value is returned.

func (WeakString) Int 

func (ws WeakString) Int() int

Int returns ws as an integer. If ws is not an integer, 0 is returned.

func (WeakString) MarshalJSON 

func (ws WeakString) MarshalJSON() ([]byte, error)

MarshalJSON marshals was a boolean if true or false, a number if an integer, or a string otherwise.

func (WeakString) String 

func (ws WeakString) String() string

String returns ws as a string.

func (*WeakString) UnmarshalJSON 

func (ws *WeakString) UnmarshalJSON(b []byte) error

UnmarshalJSON satisfies json.Unmarshaler according to this type's documentation.

Source Files

View all Source files

Directories

Path Synopsis
Package encode implements an encoder middleware for Caddy.
 Package encode implements an encoder middleware for Caddy.
brotli
gzip
zstd
fastcgi
internal/lib

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