context

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Version: v0.0.2 Latest Latest
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Published: Sep 3, 2020 License: BSD-3-Clause Imports: 49 Imported by: 2,634

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Index

Constants

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const (
	GZIP    = "gzip"
	DEFLATE = "deflate"
	BROTLI  = "br"
	SNAPPY  = "snappy"
	S2      = "s2"
)

The available builtin compression algorithms.

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const (
	ReferrerInvalid ReferrerType = iota
	ReferrerIndirect
	ReferrerDirect
	ReferrerEmail
	ReferrerSearch
	ReferrerSocial

	ReferrerNotGoogleSearch ReferrerGoogleSearchType = iota
	ReferrerGoogleOrganicSearch
	ReferrerGoogleAdwords
)

Contains the available values of the goreferrer enums.

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const (
	// ContentTypeHeaderKey is the header key of "Content-Type".
	ContentTypeHeaderKey = "Content-Type"

	// LastModifiedHeaderKey is the header key of "Last-Modified".
	LastModifiedHeaderKey = "Last-Modified"
	// IfModifiedSinceHeaderKey is the header key of "If-Modified-Since".
	IfModifiedSinceHeaderKey = "If-Modified-Since"
	// CacheControlHeaderKey is the header key of "Cache-Control".
	CacheControlHeaderKey = "Cache-Control"
	// ETagHeaderKey is the header key of "ETag".
	ETagHeaderKey = "ETag"

	// ContentDispositionHeaderKey is the header key of "Content-Disposition".
	ContentDispositionHeaderKey = "Content-Disposition"
	// ContentLengthHeaderKey is the header key of "Content-Length"
	ContentLengthHeaderKey = "Content-Length"
	// ContentEncodingHeaderKey is the header key of "Content-Encoding".
	ContentEncodingHeaderKey = "Content-Encoding"
	// GzipHeaderValue is the header value of "gzip".
	GzipHeaderValue = "gzip"
	// AcceptEncodingHeaderKey is the header key of "Accept-Encoding".
	AcceptEncodingHeaderKey = "Accept-Encoding"
	// VaryHeaderKey is the header key of "Vary".
	VaryHeaderKey = "Vary"
)
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const (
	// ContentBinaryHeaderValue header value for binary data.
	ContentBinaryHeaderValue = "application/octet-stream"
	// ContentWebassemblyHeaderValue header value for web assembly files.
	ContentWebassemblyHeaderValue = "application/wasm"
	// ContentHTMLHeaderValue is the  string of text/html response header's content type value.
	ContentHTMLHeaderValue = "text/html"
	// ContentJSONHeaderValue header value for JSON data.
	ContentJSONHeaderValue = "application/json"
	// ContentJSONProblemHeaderValue header value for JSON API problem error.
	// Read more at: https://tools.ietf.org/html/rfc7807
	ContentJSONProblemHeaderValue = "application/problem+json"
	// ContentXMLProblemHeaderValue header value for XML API problem error.
	// Read more at: https://tools.ietf.org/html/rfc7807
	ContentXMLProblemHeaderValue = "application/problem+xml"
	// ContentJavascriptHeaderValue header value for JSONP & Javascript data.
	ContentJavascriptHeaderValue = "text/javascript"
	// ContentTextHeaderValue header value for Text data.
	ContentTextHeaderValue = "text/plain"
	// ContentXMLHeaderValue header value for XML data.
	ContentXMLHeaderValue = "text/xml"
	// ContentXMLUnreadableHeaderValue obselete header value for XML.
	ContentXMLUnreadableHeaderValue = "application/xml"
	// ContentMarkdownHeaderValue custom key/content type, the real is the text/html.
	ContentMarkdownHeaderValue = "text/markdown"
	// ContentYAMLHeaderValue header value for YAML data.
	ContentYAMLHeaderValue = "application/x-yaml"
	// ContentProtobufHeaderValue header value for Protobuf messages data.
	ContentProtobufHeaderValue = "application/x-protobuf"
	// ContentMsgPackHeaderValue header value for MsgPack data.
	ContentMsgPackHeaderValue = "application/msgpack"
	// ContentMsgPack2HeaderValue alternative header value for MsgPack data.
	ContentMsgPack2HeaderValue = "application/x-msgpack"
	// ContentFormHeaderValue header value for post form data.
	ContentFormHeaderValue = "application/x-www-form-urlencoded"
	// ContentFormMultipartHeaderValue header value for post multipart form data.
	ContentFormMultipartHeaderValue = "multipart/form-data"
	// ContentGRPCHeaderValue Content-Type header value for gRPC.
	ContentGRPCHeaderValue = "application/grpc"
)
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const (
	OpCookieGet uint8 = iota
	OpCookieSet
	OpCookieDel
)

Set of Cookie actions for `CookieOption`.

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const (

	// NoWritten !=-1 => when nothing written before
	NoWritten = -1
	// StatusCodeWritten != 0 =>  when only status code written
	StatusCodeWritten = 0
)
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const (
	// 4xx
	StatusPageExpired                      = 419
	StatusBlockedByWindowsParentalControls = 450
	StatusInvalidToken                     = 498
	StatusTokenRequired                    = 499
	// 5xx
	StatusBandwidthLimitExceeded = 509
	StatusInvalidSSLCertificate  = 526
	StatusSiteOverloaded         = 529
	StatusSiteFrozen             = 530
	StatusNetworkReadTimeout     = 598
)

Unofficial status error codes.

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const (

	// ControllerContextKey returns the context key from which
	// the `Context.Controller` method returns the store's value.
	ControllerContextKey = "iris.controller.reflect_value"
)
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const DependenciesContextKey = "iris.dependencies"

DependenciesContextKey is the context key for the context's value to keep the serve-time static dependencies raw values.

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const IDENTITY = "identity"

IDENTITY no transformation whatsoever.

Variables

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var (
	// ErrResponseNotCompressed returned from AcquireCompressResponseWriter
	// when response's Content-Type header is missing due to golang/go/issues/31753 or
	// when accept-encoding is empty. The caller should fallback to the original response writer.
	ErrResponseNotCompressed = errors.New("compress: response will not be compressed")
	// ErrRequestNotCompressed returned from NewCompressReader
	// when request is not compressed.
	ErrRequestNotCompressed = errors.New("compress: request is not compressed")
	// ErrNotSupportedCompression returned from
	// AcquireCompressResponseWriter, NewCompressWriter and NewCompressReader
	// when the request's Accept-Encoding was not found in the server's supported
	// compression algorithms. Check that error with `errors.Is`.
	ErrNotSupportedCompression = errors.New("compress: unsupported compression")
)
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var (
	// CookieExpireDelete may be set on Cookie.Expire for expiring the given cookie.
	CookieExpireDelete = time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)

	// CookieExpireUnlimited indicates that does expires after 24 years.
	CookieExpireUnlimited = time.Now().AddDate(24, 10, 10)
)
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var (
	// PackageName is the Iris Go module package name.
	PackageName = strings.TrimSuffix(reflect.TypeOf(Handlers{}).PkgPath(), "/context")

	// WorkingDir is the (initial) current directory.
	WorkingDir, _ = os.Getwd()
)
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var (
	ClientErrorCodes = []int{
		http.StatusBadRequest,
		http.StatusUnauthorized,
		http.StatusPaymentRequired,
		http.StatusForbidden,
		http.StatusNotFound,
		http.StatusMethodNotAllowed,
		http.StatusNotAcceptable,
		http.StatusProxyAuthRequired,
		http.StatusRequestTimeout,
		http.StatusConflict,
		http.StatusGone,
		http.StatusLengthRequired,
		http.StatusPreconditionFailed,
		http.StatusRequestEntityTooLarge,
		http.StatusRequestURITooLong,
		http.StatusUnsupportedMediaType,
		http.StatusRequestedRangeNotSatisfiable,
		http.StatusExpectationFailed,
		http.StatusTeapot,
		http.StatusMisdirectedRequest,
		http.StatusUnprocessableEntity,
		http.StatusLocked,
		http.StatusFailedDependency,
		http.StatusTooEarly,
		http.StatusUpgradeRequired,
		http.StatusPreconditionRequired,
		http.StatusTooManyRequests,
		http.StatusRequestHeaderFieldsTooLarge,
		http.StatusUnavailableForLegalReasons,

		StatusPageExpired,
		StatusBlockedByWindowsParentalControls,
		StatusInvalidToken,
		StatusTokenRequired,
	}
	// ServerErrorCodes holds the 5xx Server errors.
	ServerErrorCodes = []int{
		http.StatusInternalServerError,
		http.StatusNotImplemented,
		http.StatusBadGateway,
		http.StatusServiceUnavailable,
		http.StatusGatewayTimeout,
		http.StatusHTTPVersionNotSupported,
		http.StatusVariantAlsoNegotiates,
		http.StatusInsufficientStorage,
		http.StatusLoopDetected,
		http.StatusNotExtended,
		http.StatusNetworkAuthenticationRequired,

		StatusBandwidthLimitExceeded,
		StatusInvalidSSLCertificate,
		StatusSiteOverloaded,
		StatusSiteFrozen,
		StatusNetworkReadTimeout,
	}

	// ClientAndServerErrorCodes is the static list of all client and server error codes.
	ClientAndServerErrorCodes = append(ClientErrorCodes, ServerErrorCodes...)
)

ClientErrorCodes holds the 4xx Client errors.

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var AllEncodings = []string{GZIP, DEFLATE, BROTLI, SNAPPY}

AllEncodings is a slice of default content encodings. See `AcquireCompressResponseWriter`.

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var DefaultJSONOptions = JSON{}

DefaultJSONOptions is the optional settings that are being used inside `ctx.JSON`.

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var DefaultJSONPOptions = JSONP{}

DefaultJSONPOptions is the optional settings that are being used inside `ctx.JSONP`.

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var DefaultMarkdownOptions = Markdown{}

DefaultMarkdownOptions is the optional settings that are being used from `WriteMarkdown` and `ctx.Markdown`.

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var DefaultProblemOptions = ProblemOptions{
	JSON: JSON{Indent: "  "},
	XML:  XML{Indent: "  "},
}

DefaultProblemOptions the default options for `Context.Problem` method.

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var DefaultProblemStatusCode = http.StatusBadRequest

DefaultProblemStatusCode is being sent to the client when Problem's status is not a valid one.

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var DefaultXMLOptions = XML{}

DefaultXMLOptions is the optional settings that are being used from `ctx.XML`.

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var ErrContentNotSupported = errors.New("unsupported content")

ErrContentNotSupported returns from the `Negotiate` method when server responds with 406.

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var ErrEmptyForm = errors.New("empty form")

ErrEmptyForm is returned by `context#ReadForm` and `context#ReadBody` when it should read data from a request form data but there is none.

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var ErrHijackNotSupported = errors.New("hijack is not supported by this ResponseWriter")

ErrHijackNotSupported is returned by the Hijack method to indicate that Hijack feature is not available.

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var ErrNotFound = errors.New("not found")

ErrNotFound is the type error which API users can make use of to check if a `Context` action of a `Handler` is type of Not Found, e.g. URL Query Parameters. Example:

n, err := context.URLParamInt("url_query_param_name") if errors.Is(err, context.ErrNotFound) {

// [handle error...]

} Another usage would be `err == context.ErrNotFound` HOWEVER prefer use the new `errors.Is` as API details may change in the future.

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var ErrPreconditionFailed = errors.New("precondition failed")

ErrPreconditionFailed may be returned from `Context` methods that has to perform one or more client side preconditions before the actual check, e.g. `CheckIfModifiedSince`. Usage: ok, err := context.CheckIfModifiedSince(modTime) if err != nil {

if errors.Is(err, context.ErrPreconditionFailed) {
     [handle missing client conditions,such as not valid request method...]
 }else {
     [the error is probably a time parse error...]
}

}

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var ErrPushNotSupported = errors.New("push feature is not supported by this ResponseWriter")

ErrPushNotSupported is returned by the Push method to indicate that HTTP/2 Push support is not available.

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var ErrTransactionInterrupt = errors.New("transaction interrupted")

ErrTransactionInterrupt can be used to manually force-complete a Context's transaction and log(warn) the wrapped error's message. Usage: `... return fmt.Errorf("my custom error message: %w", context.ErrTransactionInterrupt)`.

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var FormatTime = func(ctx *Context, t time.Time) string {
	return t.Format(ctx.Application().ConfigurationReadOnly().GetTimeFormat())
}

FormatTime returns a textual representation of the time value formatted according to the Application's configuration's TimeFormat field which defines the format.

Look `context#ParseTime` for the opossite operation (string to Time).

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var IsErrPath = schema.IsErrPath

IsErrPath can be used at `context#ReadForm` and `context#ReadQuery`. It reports whether the incoming error can be ignored when server allows unknown post values to be sent by the client.

A shortcut for the `schema#IsErrPath`.

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var LimitRequestBodySize = func(maxRequestBodySizeBytes int64) Handler {
	return func(ctx *Context) {
		ctx.SetMaxRequestBodySize(maxRequestBodySizeBytes)
		ctx.Next()
	}
}

LimitRequestBodySize is a middleware which sets a request body size limit for all next handlers in the chain.

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var ParamResolvers = map[reflect.Type]func(paramIndex int) interface{}{
	reflect.TypeOf(""): func(paramIndex int) interface{} {
		return func(ctx *Context) string {
			if ctx.Params().Len() <= paramIndex {
				return ""
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(string)
		}
	},
	reflect.TypeOf(int(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) int {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}

			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(int)
		}
	},
	reflect.TypeOf(int8(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) int8 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(int8)
		}
	},
	reflect.TypeOf(int16(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) int16 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(int16)
		}
	},
	reflect.TypeOf(int32(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) int32 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(int32)
		}
	},
	reflect.TypeOf(int64(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) int64 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(int64)
		}
	},
	reflect.TypeOf(uint(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) uint {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(uint)
		}
	},
	reflect.TypeOf(uint8(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) uint8 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(uint8)
		}
	},
	reflect.TypeOf(uint16(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) uint16 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(uint16)
		}
	},
	reflect.TypeOf(uint32(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) uint32 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(uint32)
		}
	},
	reflect.TypeOf(uint64(1)): func(paramIndex int) interface{} {
		return func(ctx *Context) uint64 {
			if ctx.Params().Len() <= paramIndex {
				return 0
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(uint64)
		}
	},
	reflect.TypeOf(true): func(paramIndex int) interface{} {
		return func(ctx *Context) bool {
			if ctx.Params().Len() <= paramIndex {
				return false
			}
			return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(bool)
		}
	},
}

ParamResolvers is the global param resolution for a parameter type for a specific go std or custom type.

Key is the specific type, which should be unique. The value is a function which accepts the parameter index and it should return the value as the parameter type evaluator expects it. i.e [reflect.TypeOf("string")] = func(paramIndex int) interface{} {

return func(ctx *Context) <T> {
    return ctx.Params().GetEntryAt(paramIndex).ValueRaw.(<T>)
}

}

Read https://github.com/kataras/iris/tree/master/_examples/routing/macros for more details. Checks for total available request parameters length and parameter index based on the hero/mvc function added in order to support the MVC.HandleMany("GET", "/path/{ps}/{pssecond} /path/{ps}") when on the second requested path, the 'pssecond' should be empty.

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var ParseTime = func(ctx *Context, text string) (t time.Time, err error) {
	t, err = time.Parse(ctx.Application().ConfigurationReadOnly().GetTimeFormat(), text)
	if err != nil {
		return http.ParseTime(text)
	}

	return
}

ParseTime parses a time header (such as the Date: header), trying each forth formats (or three if Application's configuration's TimeFormat is defaulted) that are allowed by HTTP/1.1: Application's configuration's TimeFormat or/and http.TimeFormat, time.RFC850, and time.ANSIC.

Look `context#FormatTime` for the opossite operation (Time to string).

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var Recorder = func(ctx *Context) {
	ctx.Record()
	ctx.Next()
}

Recorder the middleware to enable response writer recording ( ResponseWriter -> ResponseRecorder)

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var RequestTransactionScope = TransactionScopeFunc(func(maybeErr TransactionErrResult, ctx *Context) bool {
	if maybeErr.IsFailure() {

		ctx.ResponseWriter().SetBeforeFlush(func() {

			w := ctx.ResponseWriter().(*ResponseRecorder)
			if maybeErr.Reason != "" {

				w.SetBodyString(maybeErr.Reason)
				w.WriteHeader(maybeErr.StatusCode)
				ctx.ContentType(maybeErr.ContentType)
			} else {

				ctx.StopWithStatus(maybeErr.StatusCode)
			}
		})

		return false
	}

	return true
})

RequestTransactionScope explanation:

if scope fails (if transaction.IsFailure() == true) then the rest of the context's response (transaction or normal flow) is not written to the client, and an error status code is written instead.

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var SetCookieKVExpiration = time.Duration(8760) * time.Hour

SetCookieKVExpiration is 365 days by-default you can change it or simple, use the SetCookie for more control.

See `CookieExpires` and `AddCookieOptions` for more.

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var StatusCodeNotSuccessful = func(statusCode int) bool { return statusCode >= 400 }

StatusCodeNotSuccessful defines if a specific "statusCode" is not a valid status code for a successful response. By default if the status code is lower than 400 then it is not a failure one, otherwise it is considered as an error code.

Read more at `iris/Configuration#DisableAutoFireStatusCode` and `iris/core/router/Party#OnAnyErrorCode` for relative information.

Modify this variable when your Iris server or/and client not follows the RFC: https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

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var TransientTransactionScope = TransactionScopeFunc(func(maybeErr TransactionErrResult, ctx *Context) bool {
	if maybeErr.IsFailure() {
		ctx.Recorder().Reset()
	}
	return true
})

TransientTransactionScope explanation:

independent 'silent' scope, if transaction fails (if transaction.IsFailure() == true) then its response is not written to the real context no error is provided to the user. useful for the most cases.

Functions

func AddCompressHeaders

func AddCompressHeaders(h http.Header, encoding string)

AddCompressHeaders just adds the headers "Vary" to "Accept-Encoding" and "Content-Encoding" to the given encoding.

func CookieCleanPath

func CookieCleanPath(_ *Context, c *http.Cookie, op uint8)

CookieCleanPath is a `CookieOption`. Use it to clear the cookie's Path field, exactly the same as `CookiePath("")`.

func CookieIncluded

func CookieIncluded(cookie *http.Cookie, cookieNames []string) bool

CookieIncluded reports whether the "cookie.Name" is in the list of "cookieNames". Notes: If "cookieNames" slice is empty then it returns true, If "cookie.Name" is empty then it returns false.

func CookieSecure

func CookieSecure(ctx *Context, c *http.Cookie, op uint8)

CookieSecure sets the cookie's Secure option if the current request's connection is using TLS. See `CookieHTTPOnly` too.

func DecodeQuery

func DecodeQuery(path string) string

DecodeQuery returns the uri parameter as url (string) useful when you want to pass something to a database and be valid to retrieve it via context.Param use it only for special cases, when the default behavior doesn't suits you.

http://www.blooberry.com/indexdot/html/topics/urlencoding.htm it uses just the url.QueryUnescape

func DecodeURL

func DecodeURL(uri string) string

DecodeURL returns the decoded uri useful when you want to pass something to a database and be valid to retrieve it via context.Param use it only for special cases, when the default behavior doesn't suits you.

http://www.blooberry.com/indexdot/html/topics/urlencoding.htm it uses just the url.Parse

func FormValueDefault

func FormValueDefault(r *http.Request, name string, def string, postMaxMemory int64, resetBody bool) string

FormValueDefault retruns a single parsed form value.

func GetBody

func GetBody(r *http.Request, resetBody bool) ([]byte, error)

GetBody reads and returns the request body.

func GetEncoding

func GetEncoding(r *http.Request, offers []string) (string, error)

GetEncoding extracts the best available encoding from the request.

func GetForm

func GetForm(r *http.Request, postMaxMemory int64, resetBody bool) (form map[string][]string, found bool)

GetForm returns the request form (url queries, post or multipart) values.

func GetHost

func GetHost(r *http.Request) string

GetHost returns the host part of the current URI.

func HandlerFileLine

func HandlerFileLine(h interface{}) (file string, line int)

HandlerFileLine returns the handler's file and line information. See `context.HandlerFileLine` to get the file, line of the current running handler in the chain.

func HandlerFileLineRel

func HandlerFileLineRel(h interface{}) (file string, line int)

HandlerFileLineRel same as `HandlerFileLine` but it returns the path corresponding to its relative based on the package-level "WorkingDir" variable.

func HandlerName

func HandlerName(h interface{}) string

HandlerName returns the handler's function name. See `Context.HandlerName` method to get function name of the current running handler in the chain. See `SetHandlerName` too.

func HandlersNames

func HandlersNames(handlers ...interface{}) string

HandlersNames returns a slice of "handlers" names separated by commas. Can be used for debugging or to determinate if end-developer called the same exactly Use/UseRouter/Done... API methods so framework can give a warning.

func IgnoreHandlerName

func IgnoreHandlerName(name string) bool

IgnoreHandlerName compares a static slice of Iris builtin internal methods that should be ignored from trace. Some internal methods are kept out of this list for actual debugging.

func IsZeroTime

func IsZeroTime(t time.Time) bool

IsZeroTime reports whether t is obviously unspecified (either zero or Unix()=0).

func MainHandlerName

func MainHandlerName(handlers ...interface{}) (name string, index int)

MainHandlerName tries to find the main handler that end-developer registered on the provided chain of handlers and returns its function name.

func ParamResolverByTypeAndIndex

func ParamResolverByTypeAndIndex(typ reflect.Type, paramIndex int) (reflect.Value, bool)

ParamResolverByTypeAndIndex will return a function that can be used to bind path parameter's exact value by its Go std type and the parameter's index based on the registered path. Usage: nameResolver := ParamResolverByKindAndKey(reflect.TypeOf(""), 0) Inside a Handler: nameResolver.Call(ctx)[0]

it will return the reflect.Value Of the exact type of the parameter(based on the path parameters and macros).

It is only useful for dynamic binding of the parameter, it is used on "hero" package and it should be modified only when Macros are modified in such way that the default selections for the available go std types are not enough.

Returns empty value and false if "k" does not match any valid parameter resolver.

func SetHandlerName

func SetHandlerName(original string, replacement string)

SetHandlerName sets a handler name that could be fetched through `HandlerName`. The "original" should be the Go's original regexp-featured (can be retrieved through a `HandlerName` call) function name. The "replacement" should be the custom, human-text of that function name.

If the name starts with "iris" then it replaces that string with the full Iris module package name, e.g. iris/middleware/logger.(*requestLoggerMiddleware).ServeHTTP-fm to github.com/kataras/iris/middleware/logger.(*requestLoggerMiddleware).ServeHTTP-fm for convenient between Iris versions.

func StatusText

func StatusText(code int) string

StatusText returns a text for the HTTP status code. It returns the empty string if the code is unknown.

func TrimHeaderValue

func TrimHeaderValue(v string) string

TrimHeaderValue returns the "v[0:first space or semicolon]".

func WriteJSON

func WriteJSON(writer io.Writer, v interface{}, options JSON, optimize bool) (int, error)

WriteJSON marshals the given interface object and writes the JSON response to the 'writer'. Ignores StatusCode and StreamingJSON options.

func WriteJSONP

func WriteJSONP(writer io.Writer, v interface{}, options JSONP, optimize bool) (int, error)

WriteJSONP marshals the given interface object and writes the JSON response to the writer.

func WriteMarkdown

func WriteMarkdown(writer io.Writer, markdownB []byte, options Markdown) (int, error)

WriteMarkdown parses the markdown to html and writes these contents to the writer.

func WriteXML

func WriteXML(writer io.Writer, v interface{}, options XML, optimize bool) (int, error)

WriteXML marshals the given interface object and writes the XML response to the writer.

func XMLMap

func XMLMap(elementName string, v Map) xml.Marshaler

XMLMap wraps a map[string]interface{} to compatible xml marshaler, in order to be able to render maps as XML on the `Context.XML` method.

Example: `Context.XML(XMLMap("Root", map[string]interface{}{...})`.

Types

type Application

type Application interface {
	// ConfigurationReadOnly returns all the available configuration values can be used on a request.
	ConfigurationReadOnly() ConfigurationReadOnly

	// Logger returns the golog logger instance(pointer) that is being used inside the "app".
	Logger() *golog.Logger

	// I18nReadOnly returns the i18n's read-only features.
	I18nReadOnly() I18nReadOnly

	// Validate validates a value and returns nil if passed or
	// the failure reason if not.
	Validate(interface{}) error

	// View executes and write the result of a template file to the writer.
	//
	// Use context.View to render templates to the client instead.
	// Returns an error on failure, otherwise nil.
	View(writer io.Writer, filename string, layout string, bindingData interface{}) error

	// ServeHTTPC is the internal router, it's visible because it can be used for advanced use cases,
	// i.e: routing within a foreign context.
	//
	// It is ready to use after Build state.
	ServeHTTPC(ctx *Context)

	// ServeHTTP is the main router handler which calls the .Serve and acquires a new context from the pool.
	//
	// It is ready to use after Build state.
	ServeHTTP(w http.ResponseWriter, r *http.Request)

	// Shutdown gracefully terminates all the application's server hosts and any tunnels.
	// Returns an error on the first failure, otherwise nil.
	Shutdown(ctx stdContext.Context) error

	// GetRouteReadOnly returns the registered "read-only" route based on its name, otherwise nil.
	// One note: "routeName" should be case-sensitive. Used by the context to get the current route.
	// It returns an interface instead to reduce wrong usage and to keep the decoupled design between
	// the context and the routes.
	//
	// Look core/router/APIBuilder#GetRoute for more.
	GetRouteReadOnly(routeName string) RouteReadOnly

	// GetRoutesReadOnly returns the registered "read-only" routes.
	//
	// Look core/router/APIBuilder#GetRoutes for more.
	GetRoutesReadOnly() []RouteReadOnly

	// FireErrorCode handles the response's error response.
	// If `Configuration.ResetOnFireErrorCode()` is true
	// and the response writer was a recorder or a gzip writer one
	// then it will try to reset the headers and the body before calling the
	// registered (or default) error handler for that error code set by
	// `ctx.StatusCode` method.
	FireErrorCode(ctx *Context)

	// RouteExists reports whether a particular route exists
	// It will search from the current subdomain of context's host, if not inside the root domain.
	RouteExists(ctx *Context, method, path string) bool
	// FindClosestPaths returns a list of "n" paths close to "path" under the given "subdomain".
	//
	// Order may change.
	FindClosestPaths(subdomain, searchPath string, n int) []string
}

Application is the context's owner. This interface contains the functions that can be used with safety inside a Handler by `context.Application()`.

type BodyDecoder

type BodyDecoder interface {
	Decode(data []byte) error
}

BodyDecoder is an interface which any struct can implement in order to customize the decode action from ReadJSON and ReadXML

Trivial example of this could be: type User struct { Username string }

func (u *User) Decode(data []byte) error {

return json.Unmarshal(data, u)

}

the 'context.ReadJSON/ReadXML(&User{})' will call the User's Decode option to decode the request body

Note: This is totally optionally, the default decoders for ReadJSON is the encoding/json and for ReadXML is the encoding/xml.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-custom-per-type/main.go

type CompressReader

type CompressReader struct {
	io.ReadCloser

	// We need this to reset the body to its original state, if requested.
	Src io.ReadCloser
	// Encoding is the compression alogirthm is used to decompress and read the data.
	Encoding string
}

CompressReader is a structure which wraps a compressed reader. It is used for determination across common request body and a compressed one.

func NewCompressReader

func NewCompressReader(src io.Reader, encoding string) (*CompressReader, error)

NewCompressReader returns a new "compressReader" wrapper of "src". It returns `ErrRequestNotCompressed` if client's request data are not compressed or `ErrNotSupportedCompression` if server missing the decompression algorithm. Note: on server-side the request body (src) will be closed automaticaly.

type CompressResponseWriter

type CompressResponseWriter struct {
	CompressWriter
	ResponseWriter

	Disabled bool
	Encoding string
	Level    int
}

CompressResponseWriter is a compressed data http.ResponseWriter.

func AcquireCompressResponseWriter

func AcquireCompressResponseWriter(w ResponseWriter, r *http.Request, level int) (*CompressResponseWriter, error)

AcquireCompressResponseWriter returns a CompressResponseWriter from the pool. It accepts an Iris response writer, a net/http request value and the level of compression (use -1 for default compression level).

It returns the best candidate among "gzip", "defate", "br", "snappy" and "s2" based on the request's "Accept-Encoding" header value.

func (*CompressResponseWriter) EndResponse

func (w *CompressResponseWriter) EndResponse()

EndResponse reeases the writers.

func (*CompressResponseWriter) Flush

func (w *CompressResponseWriter) Flush()

Flush sends any buffered data to the client. Can be called manually.

func (*CompressResponseWriter) FlushHeaders

func (w *CompressResponseWriter) FlushHeaders()

FlushHeaders deletes the encoding headers if the compressed writer was disabled otherwise removes the content-length so next callers can re-calculate the correct length.

func (*CompressResponseWriter) FlushResponse

func (w *CompressResponseWriter) FlushResponse()

FlushResponse flushes any data, closes the underline compress writer and writes the status code. Called automatically before `EndResponse`.

func (*CompressResponseWriter) Write

func (w *CompressResponseWriter) Write(p []byte) (int, error)

func (*CompressResponseWriter) WriteTo

func (w *CompressResponseWriter) WriteTo(dest io.Writer, p []byte) (int, error)

WriteTo writes the "p" to "dest" Writer using the compression that this compress writer was made of.

type CompressWriter

type CompressWriter interface {
	io.WriteCloser
	// All known implementations contain `Flush` and `Reset`  methods,
	// so we wanna declare them upfront.
	Flush() error
	Reset(io.Writer)
}

CompressWriter is an interface which all compress writers should implement.

func NewCompressWriter

func NewCompressWriter(w io.Writer, encoding string, level int) (cw CompressWriter, err error)

NewCompressWriter returns a CompressWriter of "w" based on the given "encoding".

type ConfigurationReadOnly

type ConfigurationReadOnly interface {
	// GetVHost returns the non-exported vhost config field.
	GetVHost() string
	// GetLogLevel returns the LogLevel field.
	GetLogLevel() string
	// GetSocketSharding returns the SocketSharding field.
	GetSocketSharding() bool
	// GetDisablePathCorrection returns the DisablePathCorrection field
	GetDisablePathCorrection() bool
	// GetDisablePathCorrectionRedirection returns the DisablePathCorrectionRedirection field.
	GetDisablePathCorrectionRedirection() bool
	// GetEnablePathIntelligence returns the EnablePathIntelligence field.
	GetEnablePathIntelligence() bool
	// GetEnablePathEscape returns the EnablePathEscape field.
	GetEnablePathEscape() bool
	// GetForceLowercaseRouting returns the ForceLowercaseRouting field.
	GetForceLowercaseRouting() bool
	// GetFireMethodNotAllowed returns the FireMethodNotAllowed field.
	GetFireMethodNotAllowed() bool
	// GetDisableAutoFireStatusCode returns the DisableAutoFireStatusCode field.
	GetDisableAutoFireStatusCode() bool
	// ResetOnFireErrorCode retruns the ResetOnFireErrorCode field.
	GetResetOnFireErrorCode() bool

	// GetEnableOptimizations returns the EnableOptimizations field.
	GetEnableOptimizations() bool
	// GetDisableBodyConsumptionOnUnmarshal returns the DisableBodyConsumptionOnUnmarshal field.
	GetDisableBodyConsumptionOnUnmarshal() bool
	// GetFireEmptyFormError returns the FireEmptyFormError field.
	GetFireEmptyFormError() bool

	// GetTimeFormat returns the TimeFormat field.
	GetTimeFormat() string
	// GetCharset returns the Charset field.
	GetCharset() string
	// GetPostMaxMemory returns the PostMaxMemory field.
	GetPostMaxMemory() int64

	// GetTranslateLanguageContextKey returns the LocaleContextKey field.
	GetLocaleContextKey() string
	// GetLanguageContextKey returns the LanguageContextKey field.
	GetLanguageContextKey() string
	// GetVersionContextKey returns the VersionContextKey field.
	GetVersionContextKey() string

	// GetViewEngineContextKey returns the ViewEngineContextKey field.
	GetViewEngineContextKey() string
	// GetViewLayoutContextKey returns the ViewLayoutContextKey field.
	GetViewLayoutContextKey() string
	// GetViewDataContextKey returns the ViewDataContextKey field.
	GetViewDataContextKey() string

	// GetRemoteAddrHeaders returns RemoteAddrHeaders field.
	GetRemoteAddrHeaders() []string
	// GetRemoteAddrHeadersForce returns RemoteAddrHeadersForce field.
	GetRemoteAddrHeadersForce() bool
	// GetRemoteAddrPrivateSubnets returns the RemoteAddrPrivateSubnets field.
	GetRemoteAddrPrivateSubnets() []netutil.IPRange
	// GetSSLProxyHeaders returns the SSLProxyHeaders field.
	GetSSLProxyHeaders() map[string]string
	// GetHostProxyHeaders returns the HostProxyHeaders field.
	GetHostProxyHeaders() map[string]bool
	// GetOther returns the Other field.
	GetOther() map[string]interface{}
}

ConfigurationReadOnly can be implemented by Configuration, it's being used inside the Context. All methods that it contains should be "safe" to be called by the context at "serve time". A configuration field may be missing when it's not safe or its useless to be called from a request handler.

type ContentNegotiator

type ContentNegotiator interface {
	// mime and charset can be retrieved by:
	// mime, charset := Context.Negotiation().Build()
	// Pass this method to `Context.Negotiate` method
	// to write custom content.
	// Overriding the existing behavior of Context.Negotiate for selecting values based on
	// content types, although it can accept any custom mime type with []byte.
	// Content type is already set.
	// Use it with caution, 99.9% you don't need this but it's here for extreme cases.
	Negotiate(ctx *Context) (int, error)
}

ContentNegotiator is the interface which structs can implement to override the `Context.Negotiate` default implementation and manually respond to the client based on a manuall call of `Context.Negotiation().Build()` to get the final negotiated mime and charset. It can be passed to the `Context.Negotiate` method.

type ContentSelector

type ContentSelector interface {
	SelectContent(mime string) interface{}
}

ContentSelector is the interface which structs can implement to manually choose a content based on the negotiated mime (content type). It can be passed to the `Context.Negotiate` method.

See the `N` struct too.

type Context

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

Context is the midle-man server's "object" dealing with incoming requests.

A New context is being acquired from a sync.Pool on each connection. The Context is the most important thing on the iris's http flow.

Developers send responses to the client's request through a Context. Developers get request information from the client's request a Context.

func NewContext

func NewContext(app Application) *Context

NewContext returns a new Context instance.

func (*Context) AbsoluteURI

func (ctx *Context) AbsoluteURI(s string) string

AbsoluteURI parses the "s" and returns its absolute URI form.

func (*Context) AddCookieOptions

func (ctx *Context) AddCookieOptions(options ...CookieOption)

AddCookieOptions adds cookie options for `SetCookie`, `SetCookieKV, UpsertCookie` and `RemoveCookie` methods for the current request. It can be called from a middleware before cookies sent or received from the next Handler in the chain.

Available builtin Cookie options are:

* CookieAllowReclaim
* CookieAllowSubdomains
* CookieSecure
* CookieHTTPOnly
* CookieSameSite
* CookiePath
* CookieCleanPath
* CookieExpires
* CookieEncoding

Example at: https://github.com/kataras/iris/tree/master/_examples/cookies/securecookie

func (*Context) AddHandler

func (ctx *Context) AddHandler(handlers ...Handler)

AddHandler can add handler(s) to the current request in serve-time, these handlers are not persistenced to the router.

Router is calling this function to add the route's handler. If AddHandler called then the handlers will be inserted to the end of the already-defined route's handler.

func (*Context) Application

func (ctx *Context) Application() Application

Application returns the iris app instance which belongs to this context. Worth to notice that this function returns an interface of the Application, which contains methods that are safe to be executed at serve-time. The full app's fields and methods are not available here for the developer's safety.

func (*Context) BeginRequest

func (ctx *Context) BeginRequest(w http.ResponseWriter, r *http.Request)

BeginRequest is executing once for each request it should prepare the (new or acquired from pool) context's fields for the new request. Do NOT call it manually. Framework calls it automatically.

Resets 1. handlers to nil. 2. values to empty. 3. the defer function. 4. response writer to the http.ResponseWriter. 5. request to the *http.Request.

func (*Context) BeginTransaction

func (ctx *Context) BeginTransaction(pipe func(t *Transaction))

BeginTransaction starts a scoped transaction.

Can't say a lot here because it will take more than 200 lines to write about. You can search third-party articles or books on how Business Transaction works (it's quite simple, especially here).

Note that this is unique and new (=I haver never seen any other examples or code in Golang on this subject, so far, as with the most of iris features...) it's not covers all paths, such as databases, this should be managed by the libraries you use to make your database connection, this transaction scope is only for context's response. Transactions have their own middleware ecosystem also.

See https://github.com/kataras/iris/tree/master/_examples/ for more

func (*Context) Binary

func (ctx *Context) Binary(data []byte) (int, error)

Binary writes out the raw bytes as binary data.

func (*Context) CheckIfModifiedSince

func (ctx *Context) CheckIfModifiedSince(modtime time.Time) (bool, error)

CheckIfModifiedSince checks if the response is modified since the "modtime". Note that it has nothing to do with server-side caching. It does those checks by checking if the "If-Modified-Since" request header sent by client or a previous server response header (e.g with WriteWithExpiration or HandleDir or Favicon etc.) is a valid one and it's before the "modtime".

A check for !modtime && err == nil is necessary to make sure that it's not modified since, because it may return false but without even had the chance to check the client-side (request) header due to some errors, like the HTTP Method is not "GET" or "HEAD" or if the "modtime" is zero or if parsing time from the header failed. See `ErrPreconditionFailed` too.

It's mostly used internally, e.g. `context#WriteWithExpiration`.

func (*Context) ClearCookieOptions

func (ctx *Context) ClearCookieOptions()

ClearCookieOptions clears any previously registered cookie options. See `AddCookieOptions` too.

func (*Context) ClientSupportsEncoding

func (ctx *Context) ClientSupportsEncoding(encodings ...string) bool

ClientSupportsEncoding reports whether the client expects one of the given "encodings" compression.

Note, this method just reports back the first valid encoding it sees, meaning that request accept-encoding offers don't matter here. See `CompressWriter` too.

func (*Context) Clone

func (ctx *Context) Clone() *Context

Clone returns a copy of the context that can be safely used outside the request's scope. Note that if the request-response lifecycle terminated or request canceled by the client (can be checked by `ctx.IsCanceled()`) then the response writer is totally useless. The http.Request pointer value is shared.

func (*Context) CompressReader

func (ctx *Context) CompressReader(enable bool) error

CompressReader accepts a boolean, which, if set to true it wraps the request body reader with a reader which decompresses request data before read. If the "enable" input argument is false then the request body will reset to the default one.

Useful when incoming request data are compressed. All future calls of `ctx.GetBody/ReadXXX/UnmarshalBody` methods will respect this option.

Usage: app.Use(func(ctx iris.Context){

err := ctx.CompressReader(true)
ctx.Next()

}) More: if cr, ok := ctx.Request().Body.(*CompressReader); ok {

	cr.Src // the original request body
 cr.Encoding // the compression algorithm.

}

It returns `ErrRequestNotCompressed` if client's request data are not compressed (or empty) or `ErrNotSupportedCompression` if server missing the decompression algorithm.

func (*Context) CompressWriter

func (ctx *Context) CompressWriter(enable bool) error

CompressWriter enables or disables the compress response writer. if the client expects a valid compression algorithm then this will change the response writer to a compress writer instead. All future write and rich write methods will respect this option. Usage: app.Use(func(ctx iris.Context){

err := ctx.CompressWriter(true)
ctx.Next()

}) The recommendation is to compress data as much as possible and therefore to use this field, but some types of resources, such as jpeg images, are already compressed. Sometimes, using additional compression doesn't reduce payload size and can even make the payload longer.

func (*Context) ContentType

func (ctx *Context) ContentType(cType string)

ContentType sets the response writer's header "Content-Type" to the 'cType'.

func (*Context) Controller

func (ctx *Context) Controller() reflect.Value

Controller returns a reflect Value of the custom Controller from which this handler executed. It will return a Kind() == reflect.Invalid if the handler was not executed from within a controller.

func (*Context) Do

func (ctx *Context) Do(handlers Handlers)

Do sets the "handlers" as the chain and executes the first handler, handlers should not be empty.

It's used by the router, developers may use that to replace and execute handlers immediately.

func (*Context) EndRequest

func (ctx *Context) EndRequest()

EndRequest is executing once after a response to the request was sent and this context is useless or released. Do NOT call it manually. Framework calls it automatically.

1. executes the OnClose function (if any). 2. flushes the response writer's result or fire any error handler. 3. releases the response writer.

func (*Context) Exec

func (ctx *Context) Exec(method string, path string)

Exec calls the framewrok's ServeHTTPC based on this context but with a changed method and path like it was requested by the user, but it is not.

Offline means that the route is registered to the iris and have all features that a normal route has BUT it isn't available by browsing, its handlers executed only when other handler's context call them it can validate paths, has sessions, path parameters and all.

You can find the Route by app.GetRoute("theRouteName") you can set a route name as: myRoute := app.Get("/mypath", handler)("theRouteName") that will set a name to the route and returns its RouteInfo instance for further usage.

It doesn't changes the global state, if a route was "offline" it remains offline.

app.None(...) and app.GetRoutes().Offline(route)/.Online(route, method)

Example: https://github.com/kataras/iris/tree/master/_examples/routing/route-state

User can get the response by simple using rec := ctx.Recorder(); rec.Body()/rec.StatusCode()/rec.Header().

context's Values and the Session are kept in order to be able to communicate via the result route.

It's for extreme use cases, 99% of the times will never be useful for you.

func (*Context) FindClosest

func (ctx *Context) FindClosest(n int) []string

FindClosest returns a list of "n" paths close to this request based on subdomain and request path.

Order may change. Example: https://github.com/kataras/iris/tree/master/_examples/routing/intelligence/manual

func (*Context) FormFile

func (ctx *Context) FormFile(key string) (multipart.File, *multipart.FileHeader, error)

FormFile returns the first uploaded file that received from the client.

The default form's memory maximum size is 32MB, it can be changed by the `iris#WithPostMaxMemory` configurator at main configuration passed on `app.Run`'s second argument.

Example: https://github.com/kataras/iris/tree/master/_examples/file-server/upload-file

func (*Context) FormValue

func (ctx *Context) FormValue(name string) string

FormValue returns a single parsed form value by its "name", including both the URL field's query parameters and the POST or PUT form data.

func (*Context) FormValueDefault

func (ctx *Context) FormValueDefault(name string, def string) string

FormValueDefault returns a single parsed form value by its "name", including both the URL field's query parameters and the POST or PUT form data.

Returns the "def" if not found.

func (*Context) FormValues

func (ctx *Context) FormValues() map[string][]string

FormValues returns the parsed form data, including both the URL field's query parameters and the POST or PUT form data.

The default form's memory maximum size is 32MB, it can be changed by the `iris#WithPostMaxMemory` configurator at main configuration passed on `app.Run`'s second argument. NOTE: A check for nil is necessary.

func (*Context) FullRequestURI

func (ctx *Context) FullRequestURI() string

FullRequestURI returns the full URI, including the scheme, the host and the relative requested path/resource.

func (*Context) GetBody

func (ctx *Context) GetBody() ([]byte, error)

GetBody reads and returns the request body. The default behavior for the http request reader is to consume the data readen but you can change that behavior by passing the `WithoutBodyConsumptionOnUnmarshal` iris option.

However, whenever you can use the `ctx.Request().Body` instead.

func (*Context) GetContentLength

func (ctx *Context) GetContentLength() int64

GetContentLength returns the request's header value of "Content-Length".

func (*Context) GetContentType

func (ctx *Context) GetContentType() string

GetContentType returns the response writer's header value of "Content-Type".

func (*Context) GetContentTypeRequested

func (ctx *Context) GetContentTypeRequested() string

GetContentTypeRequested returns the request's trim-ed(without the charset and priority values) header value of "Content-Type".

func (*Context) GetCookie

func (ctx *Context) GetCookie(name string, options ...CookieOption) string

GetCookie returns cookie's value by its name returns empty string if nothing was found.

If you want more than the value then: cookie, err := ctx.Request().Cookie("name")

Example: https://github.com/kataras/iris/tree/master/_examples/cookies/basic

func (*Context) GetCurrentRoute

func (ctx *Context) GetCurrentRoute() RouteReadOnly

GetCurrentRoute returns the current "read-only" route that was registered to this request's path.

func (*Context) GetDomain

func (ctx *Context) GetDomain() string

GetDomain resolves and returns the server's domain.

func (*Context) GetErr

func (ctx *Context) GetErr() error

GetErr is a helper which retrieves the error value stored by `SetErr`.

func (*Context) GetHeader

func (ctx *Context) GetHeader(name string) string

GetHeader returns the request header's value based on its name.

func (*Context) GetID

func (ctx *Context) GetID() interface{}

GetID returns the Request Context's ID. It returns nil if not given by a prior `SetID` call. See `middleware/requestid` too.

func (*Context) GetLocale

func (ctx *Context) GetLocale() Locale

GetLocale returns the current request's `Locale` found by i18n middleware. See `Tr` too.

func (*Context) GetReferrer

func (ctx *Context) GetReferrer() Referrer

GetReferrer extracts and returns the information from the "Referer" (or "Referrer") header and url query parameter as specified in https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy.

func (*Context) GetStatusCode

func (ctx *Context) GetStatusCode() int

GetStatusCode returns the current status code of the response. Look StatusCode too.

func (*Context) GetViewData

func (ctx *Context) GetViewData() map[string]interface{}

GetViewData returns the values registered by `context#ViewData`. The return value is `map[string]interface{}`, this means that if a custom struct registered to ViewData then this function will try to parse it to map, if failed then the return value is nil A check for nil is always a good practise if different kind of values or no data are registered via `ViewData`.

Similarly to `viewData := ctx.Values().Get("iris.view.data")` or `viewData := ctx.Values().Get(ctx.Application().ConfigurationReadOnly().GetViewDataContextKey())`.

func (*Context) HTML

func (ctx *Context) HTML(format string, args ...interface{}) (int, error)

HTML writes out a string as text/html.

func (*Context) HandlerFileLine

func (ctx *Context) HandlerFileLine() (file string, line int)

HandlerFileLine returns the current running handler's function source file and line information. Useful mostly when debugging.

func (*Context) HandlerIndex

func (ctx *Context) HandlerIndex(n int) (currentIndex int)

HandlerIndex sets the current index of the current context's handlers chain. If n < 0 or the current handlers length is 0 then it just returns the current handler index without change the current index.

Look Handlers(), Next() and StopExecution() too.

func (*Context) HandlerName

func (ctx *Context) HandlerName() string

HandlerName returns the current handler's name, helpful for debugging.

func (*Context) Handlers

func (ctx *Context) Handlers() Handlers

Handlers keeps tracking of the current handlers.

func (*Context) Header

func (ctx *Context) Header(name string, value string)

Header adds a header to the response, if value is empty it removes the header by its name.

func (*Context) Host

func (ctx *Context) Host() string

Host returns the host:port part of the request URI, calls the `Request().Host`. To get the subdomain part as well use the `Request().URL.Host` method instead. To get the subdomain only use the `Subdomain` method instead. This method makes use of the `Configuration.HostProxyHeaders` field too.

func (*Context) IsAjax

func (ctx *Context) IsAjax() bool

IsAjax returns true if this request is an 'ajax request'( XMLHttpRequest)

There is no a 100% way of knowing that a request was made via Ajax. You should never trust data coming from the client, they can be easily overcome by spoofing.

Note that "X-Requested-With" Header can be modified by any client(because of "X-"), so don't rely on IsAjax for really serious stuff, try to find another way of detecting the type(i.e, content type), there are many blogs that describe these problems and provide different kind of solutions, it's always depending on the application you're building, this is the reason why this `IsAjax“ is simple enough for general purpose use.

Read more at: https://developer.mozilla.org/en-US/docs/AJAX and https://xhr.spec.whatwg.org/

func (*Context) IsCanceled

func (ctx *Context) IsCanceled() bool

IsCanceled reports whether the client canceled the request or the underlying connection has gone. Note that it will always return true when called from a goroutine after the request-response lifecycle.

func (*Context) IsGRPC

func (ctx *Context) IsGRPC() bool

IsGRPC reports whether the request came from a gRPC client.

func (*Context) IsHTTP2

func (ctx *Context) IsHTTP2() bool

IsHTTP2 reports whether the protocol version for incoming request was HTTP/2. The client code always uses either HTTP/1.1 or HTTP/2.

See `IsSSL` too.

func (*Context) IsMobile

func (ctx *Context) IsMobile() bool

IsMobile checks if client is using a mobile device(phone or tablet) to communicate with this server. If the return value is true that means that the http client using a mobile device to communicate with the server, otherwise false.

Keep note that this checks the "User-Agent" request header.

func (*Context) IsRecording

func (ctx *Context) IsRecording() (*ResponseRecorder, bool)

IsRecording returns the response recorder and a true value when the response writer is recording the status code, body, headers and so on, else returns nil and false.

func (*Context) IsSSL

func (ctx *Context) IsSSL() bool

IsSSL reports whether the client is running under HTTPS SSL.

See `IsHTTP2` too.

func (*Context) IsScript

func (ctx *Context) IsScript() bool

IsScript reports whether a client is a script.

func (*Context) IsStopped

func (ctx *Context) IsStopped() bool

IsStopped reports whether the current position of the context's handlers is -1, means that the StopExecution() was called at least once.

func (*Context) IsWWW

func (ctx *Context) IsWWW() bool

IsWWW returns true if the current subdomain (if any) is www.

func (*Context) JSON

func (ctx *Context) JSON(v interface{}, opts ...JSON) (n int, err error)

JSON marshals the given interface object and writes the JSON response to the client. If the value is a compatible `proto.Message` one then it only uses the options.Proto settings to marshal.

func (*Context) JSONP

func (ctx *Context) JSONP(v interface{}, opts ...JSONP) (int, error)

JSONP marshals the given interface object and writes the JSON response to the client.

func (*Context) Markdown

func (ctx *Context) Markdown(markdownB []byte, opts ...Markdown) (int, error)

Markdown parses the markdown to html and renders its result to the client.

func (*Context) MaxAge

func (ctx *Context) MaxAge() int64

MaxAge returns the "cache-control" request header's value seconds as int64 if header not found or parse failed then it returns -1.

func (*Context) Method

func (ctx *Context) Method() string

Method returns the request.Method, the client's http method to the server.

func (*Context) MsgPack

func (ctx *Context) MsgPack(v interface{}) (int, error)

MsgPack parses the "v" of msgpack format and renders its result to the client.

func (*Context) Negotiate

func (ctx *Context) Negotiate(v interface{}) (int, error)

Negotiate used for serving different representations of a resource at the same URI.

The "v" can be a single `N` struct value. The "v" can be any value completes the `ContentSelector` interface. The "v" can be any value completes the `ContentNegotiator` interface. The "v" can be any value of struct(JSON, JSONP, XML, YAML, Protobuf, MsgPack) or string(TEXT, HTML) or []byte(Markdown, Binary) or []byte with any matched mime type.

If the "v" is nil, the `Context.Negotitation()` builder's content will be used instead, otherwise "v" overrides builder's content (server mime types are still retrieved by its registered, supported, mime list)

Set mime type priorities by `Negotiation().JSON().XML().HTML()...`. Set charset priorities by `Negotiation().Charset(...)`. Set encoding algorithm priorities by `Negotiation().Encoding(...)`. Modify the accepted by `Negotiation().Accept./Override()/.XML().JSON().Charset(...).Encoding(...)...`.

It returns `ErrContentNotSupported` when not matched mime type(s).

Resources: https://developer.mozilla.org/en-US/docs/Web/HTTP/Content_negotiation https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Charset https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Encoding

Supports the above without quality values.

Read more at: https://github.com/kataras/iris/wiki/Content-negotiation

func (*Context) Negotiation

func (ctx *Context) Negotiation() *NegotiationBuilder

Negotiation creates once and returns the negotiation builder to build server-side available prioritized content for specific content type(s), charset(s) and encoding algorithm(s).

See `Negotiate` method too.

func (*Context) Next

func (ctx *Context) Next()

Next calls the next handler from the handlers chain, it should be used inside a middleware.

func (*Context) NextHandler

func (ctx *Context) NextHandler() Handler

NextHandler returns (it doesn't execute) the next handler from the handlers chain.

Use .Skip() to skip this handler if needed to execute the next of this returning handler.

func (*Context) NextOr

func (ctx *Context) NextOr(handlers ...Handler) bool

NextOr checks if chain has a next handler, if so then it executes it otherwise it sets a new chain assigned to this Context based on the given handler(s) and executes its first handler.

Returns true if next handler exists and executed, otherwise false.

Note that if no next handler found and handlers are missing then it sends a Status Not Found (404) to the client and it stops the execution.

func (*Context) NextOrNotFound

func (ctx *Context) NextOrNotFound() bool

NextOrNotFound checks if chain has a next handler, if so then it executes it otherwise it sends a Status Not Found (404) to the client and stops the execution.

Returns true if next handler exists and executed, otherwise false.

func (*Context) NotFound

func (ctx *Context) NotFound()

NotFound emits an error 404 to the client, using the specific custom error error handler. Note that you may need to call ctx.StopExecution() if you don't want the next handlers to be executed. Next handlers are being executed on iris because you can alt the error code and change it to a more specific one, i.e users := app.Party("/users") users.Done(func(ctx iris.Context){ if ctx.StatusCode() == 400 { /* custom error code for /users */ }})

func (*Context) OnClose

func (ctx *Context) OnClose(cb Handler)

OnClose registers a callback which will be fired when the underlying connection has gone away(request canceled) on its own goroutine or in the end of the request-response lifecylce on the handler's routine itself (Context access).

See `OnConnectionClose` too.

func (*Context) OnConnectionClose

func (ctx *Context) OnConnectionClose(cb Handler) bool

OnConnectionClose registers the "cb" Handler which will be fired on its on goroutine on a cloned Context when the underlying connection has gone away.

The code inside the given callback is running on its own routine, as explained above, therefore the callback should NOT try to access to handler's Context response writer.

This mechanism can be used to cancel long operations on the server if the client has disconnected before the response is ready.

It depends on the Request's Context.Done() channel.

Finally, it reports whether the protocol supports pipelines (HTTP/1.1 with pipelines disabled is not supported). The "cb" will not fire for sure if the output value is false.

Note that you can register only one callback per route.

See `OnClose` too.

func (*Context) Params

func (ctx *Context) Params() *RequestParams

Params returns the current url's named parameters key-value storage. Named path parameters are being saved here. This storage, as the whole context, is per-request lifetime.

func (*Context) Path

func (ctx *Context) Path() string

Path returns the full request path, escaped if EnablePathEscape config field is true.

func (*Context) PostValue

func (ctx *Context) PostValue(name string) string

PostValue returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name"

func (*Context) PostValueBool

func (ctx *Context) PostValueBool(name string) (bool, error)

PostValueBool returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as bool.

If not found or value is false, then it returns false, otherwise true.

func (*Context) PostValueDefault

func (ctx *Context) PostValueDefault(name string, def string) string

PostValueDefault returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name".

If not found then "def" is returned instead.

func (*Context) PostValueFloat64

func (ctx *Context) PostValueFloat64(name string) (float64, error)

PostValueFloat64 returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as float64.

If not found returns -1 and a non-nil error.

func (*Context) PostValueFloat64Default

func (ctx *Context) PostValueFloat64Default(name string, def float64) float64

PostValueFloat64Default returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as float64.

If not found or parse errors returns the "def".

func (*Context) PostValueInt

func (ctx *Context) PostValueInt(name string) (int, error)

PostValueInt returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as int.

If not found returns -1 and a non-nil error.

func (*Context) PostValueInt64

func (ctx *Context) PostValueInt64(name string) (int64, error)

PostValueInt64 returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as float64.

If not found returns -1 and a non-nil error.

func (*Context) PostValueInt64Default

func (ctx *Context) PostValueInt64Default(name string, def int64) int64

PostValueInt64Default returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as int64.

If not found or parse errors returns the "def".

func (*Context) PostValueIntDefault

func (ctx *Context) PostValueIntDefault(name string, def int) int

PostValueIntDefault returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", as int.

If not found or parse errors returns the "def".

func (*Context) PostValueTrim

func (ctx *Context) PostValueTrim(name string) string

PostValueTrim returns the parsed form data from POST, PATCH, or PUT body parameters based on a "name", without trailing spaces.

func (*Context) PostValues

func (ctx *Context) PostValues(name string) []string

PostValues returns all the parsed form data from POST, PATCH, or PUT body parameters based on a "name" as a string slice.

The default form's memory maximum size is 32MB, it can be changed by the `iris#WithPostMaxMemory` configurator at main configuration passed on `app.Run`'s second argument.

func (*Context) Problem

func (ctx *Context) Problem(v interface{}, opts ...ProblemOptions) (int, error)

Problem writes a JSON or XML problem response. Order of Problem fields are not always rendered the same.

Behaves exactly like `Context.JSON` but with default ProblemOptions.JSON indent of " " and a response content type of "application/problem+json" instead.

Use the options.RenderXML and XML fields to change this behavior and send a response of content type "application/problem+xml" instead.

Read more at: https://github.com/kataras/iris/wiki/Routing-error-handlers

func (*Context) Proceed

func (ctx *Context) Proceed(h Handler) bool

Proceed is an alternative way to check if a particular handler has been executed and called the `ctx.Next` function inside it. This is useful only when you run a handler inside another handler. It justs checks for before index and the after index.

A usecase example is when you want to execute a middleware inside controller's `BeginRequest` that calls the `ctx.Next` inside it. The Controller looks the whole flow (BeginRequest, method handler, EndRequest) as one handler, so `ctx.Next` will not be reflected to the method handler if called from the `BeginRequest`.

Although `BeginRequest` should NOT be used to call other handlers, the `BeginRequest` has been introduced to be able to set common data to all method handlers before their execution. Controllers can accept middleware(s) from the MVC's Application's Router as normally.

That said let's see an example of `ctx.Proceed`:

var authMiddleware = basicauth.New(basicauth.Config{

Users: map[string]string{
	"admin": "password",
},

})

func (c *UsersController) BeginRequest(ctx iris.Context) {

if !ctx.Proceed(authMiddleware) {
	ctx.StopExecution()
}

} This Get() will be executed in the same handler as `BeginRequest`, internally controller checks for `ctx.StopExecution`. So it will not be fired if BeginRequest called the `StopExecution`. func(c *UsersController) Get() []models.User {

return c.Service.GetAll()

} Alternative way is `!ctx.IsStopped()` if middleware make use of the `ctx.StopExecution()` on failure.

func (*Context) Protobuf

func (ctx *Context) Protobuf(v proto.Message) (int, error)

Protobuf parses the "v" of proto Message and renders its result to the client.

func (*Context) ReadBody

func (ctx *Context) ReadBody(ptr interface{}) error

ReadBody binds the request body to the "ptr" depending on the HTTP Method and the Request's Content-Type. If a GET method request then it reads from a form (or URL Query), otherwise it tries to match (depending on the request content-type) the data format e.g. JSON, Protobuf, MsgPack, XML, YAML, MultipartForm and binds the result to the "ptr".

func (*Context) ReadForm

func (ctx *Context) ReadForm(formObject interface{}) error

ReadForm binds the request body of a form to the "formObject". It supports any kind of type, including custom structs. It will return nothing if request data are empty. The struct field tag is "form". Note that it will return nil error on empty form data if `Configuration.FireEmptyFormError` is false (as defaulted) in this case the caller should check the pointer to see if something was actually binded.

If a client sent an unknown field, this method will return an error, in order to ignore that error use the `err != nil && !iris.IsErrPath(err)`.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-form/main.go

func (*Context) ReadJSON

func (ctx *Context) ReadJSON(outPtr interface{}) error

ReadJSON reads JSON from request's body and binds it to a value of any json-valid type.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-json/main.go

func (*Context) ReadJSONProtobuf

func (ctx *Context) ReadJSONProtobuf(ptr proto.Message, opts ...ProtoUnmarshalOptions) error

ReadJSONProtobuf reads a JSON body request into the given "ptr" proto.Message. Look `ReadProtobuf` too.

func (*Context) ReadMsgPack

func (ctx *Context) ReadMsgPack(ptr interface{}) error

ReadMsgPack binds the request body of msgpack format to the "ptr" and returns any error.

func (*Context) ReadProtobuf

func (ctx *Context) ReadProtobuf(ptr proto.Message) error

ReadProtobuf binds the body to the "ptr" of a proto Message and returns any error. Look `ReadJSONProtobuf` too.

func (*Context) ReadQuery

func (ctx *Context) ReadQuery(ptr interface{}) error

ReadQuery binds url query to "ptr". The struct field tag is "url".

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-query/main.go

func (*Context) ReadXML

func (ctx *Context) ReadXML(outPtr interface{}) error

ReadXML reads XML from request's body and binds it to a value of any xml-valid type.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-xml/main.go

func (*Context) ReadYAML

func (ctx *Context) ReadYAML(outPtr interface{}) error

ReadYAML reads YAML from request's body and binds it to the "outPtr" value.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-yaml/main.go

func (*Context) Record

func (ctx *Context) Record()

Record transforms the context's basic and direct responseWriter to a *ResponseRecorder which can be used to reset the body, reset headers, get the body, get & set the status code at any time and more.

func (*Context) Recorder

func (ctx *Context) Recorder() *ResponseRecorder

Recorder returns the context's ResponseRecorder if not recording then it starts recording and returns the new context's ResponseRecorder

func (*Context) Redirect

func (ctx *Context) Redirect(urlToRedirect string, statusHeader ...int)

Redirect sends a redirect response to the client to a specific url or relative path. accepts 2 parameters string and an optional int first parameter is the url to redirect second parameter is the http status should send, default is 302 (StatusFound), you can set it to 301 (Permant redirect) or 303 (StatusSeeOther) if POST method, or StatusTemporaryRedirect(307) if that's nessecery.

func (*Context) ReflectValue

func (ctx *Context) ReflectValue() []reflect.Value

ReflectValue caches and returns a []reflect.Value{reflect.ValueOf(ctx)}. It's just a helper to maintain variable inside the context itself.

func (*Context) RegisterDependency

func (ctx *Context) RegisterDependency(v interface{})

RegisterDependency registers a struct or slice or pointer to struct dependency at request-time for the next handler in the chain. One value per type. Note that it's highly recommended to register your dependencies before server ran through Party.ConfigureContainer or mvc.Application.Register in sake of minimum performance cost.

See `UnregisterDependency` too.

func (*Context) RemoteAddr

func (ctx *Context) RemoteAddr() string

RemoteAddr tries to parse and return the real client's request IP.

Based on allowed headers names that can be modified from Configuration.RemoteAddrHeaders.

If parse based on these headers fail then it will return the Request's `RemoteAddr` field which is filled by the server before the HTTP handler, unless the Configuration.RemoteAddrHeadersForce was set to true which will force this method to return the first IP from RemoteAddrHeaders even if it's part of a private network.

Look `Configuration.RemoteAddrHeaders`,

		`Configuration.RemoteAddrHeadersForce`,
     `Configuration.WithRemoteAddrHeader(...)`,
     `Configuration.WithoutRemoteAddrHeader(...)` and
     `Configuration.RemoteAddrPrivateSubnets` for more.

func (*Context) RemoveCookie

func (ctx *Context) RemoveCookie(name string, options ...CookieOption)

RemoveCookie deletes a cookie by its name and path = "/". Tip: change the cookie's path to the current one by: RemoveCookie("name", iris.CookieCleanPath)

Example: https://github.com/kataras/iris/tree/master/_examples/cookies/basic

func (*Context) Request

func (ctx *Context) Request() *http.Request

Request returns the original *http.Request, as expected.

func (*Context) RequestPath

func (ctx *Context) RequestPath(escape bool) string

RequestPath returns the full request path, based on the 'escape'.

func (*Context) ResetRequest

func (ctx *Context) ResetRequest(r *http.Request)

ResetRequest sets the Context's Request, It is useful to store the new request created by a std *http.Request#WithContext() into Iris' Context. Use `ResetRequest` when for some reason you want to make a full override of the *http.Request. Note that: when you just want to change one of each fields you can use the Request() which returns a pointer to Request, so the changes will have affect without a full override. Usage: you use a native http handler which uses the standard "context" package to get values instead of the Iris' Context#Values(): r := ctx.Request() stdCtx := context.WithValue(r.Context(), key, val) ctx.ResetRequest(r.WithContext(stdCtx)).

func (*Context) ResetResponseWriter

func (ctx *Context) ResetResponseWriter(newResponseWriter ResponseWriter)

ResetResponseWriter sets a new ResponseWriter implementation to this Context to use as its writer. Note, to change the underline http.ResponseWriter use ctx.ResponseWriter().SetWriter(http.ResponseWRiter) instead.

func (*Context) ResponseWriter

func (ctx *Context) ResponseWriter() ResponseWriter

ResponseWriter returns an http.ResponseWriter compatible response writer, as expected.

func (*Context) RouteExists

func (ctx *Context) RouteExists(method, path string) bool

RouteExists reports whether a particular route exists It will search from the current subdomain of context's host, if not inside the root domain.

func (*Context) RouteName

func (ctx *Context) RouteName() string

RouteName returns the route name that this handler is running on. Note that it may return empty on not found handlers.

func (*Context) SendFile

func (ctx *Context) SendFile(src string, destName string) error

SendFile sends a file as an attachment, that is downloaded and saved locally from client. Note that compression can be registered through `ctx.CompressWriter(true)` or `app.Use(iris.Compression)`. Use `ServeFile` if a file should be served as a page asset instead.

func (*Context) SendFileWithRate

func (ctx *Context) SendFileWithRate(src, destName string, limit float64, burst int) error

SendFileWithRate same as `SendFile` but it can throttle the speed of reading and though writing the file to the client.

func (*Context) ServeContent

func (ctx *Context) ServeContent(content io.ReadSeeker, filename string, modtime time.Time)

ServeContent replies to the request using the content in the provided ReadSeeker. The main benefit of ServeContent over io.Copy is that it handles Range requests properly, sets the MIME type, and handles If-Match, If-Unmodified-Since, If-None-Match, If-Modified-Since, and If-Range requests.

If the response's Content-Type header is not set, ServeContent first tries to deduce the type from name's file extension.

The name is otherwise unused; in particular it can be empty and is never sent in the response.

If modtime is not the zero time or Unix epoch, ServeContent includes it in a Last-Modified header in the response. If the request includes an If-Modified-Since header, ServeContent uses modtime to decide whether the content needs to be sent at all.

The content's Seek method must work: ServeContent uses a seek to the end of the content to determine its size.

If the caller has set w's ETag header formatted per RFC 7232, section 2.3, ServeContent uses it to handle requests using If-Match, If-None-Match, or If-Range.

Note that *os.File implements the io.ReadSeeker interface. Note that compression can be registered through `ctx.CompressWriter(true)` or `app.Use(iris.Compression)`.

func (*Context) ServeContentWithRate

func (ctx *Context) ServeContentWithRate(content io.ReadSeeker, filename string, modtime time.Time, limit float64, burst int)

ServeContentWithRate same as `ServeContent` but it can throttle the speed of reading and though writing the "content" to the client.

func (*Context) ServeFile

func (ctx *Context) ServeFile(filename string) error

ServeFile replies to the request with the contents of the named file or directory.

If the provided file or directory name is a relative path, it is interpreted relative to the current directory and may ascend to parent directories. If the provided name is constructed from user input, it should be sanitized before calling `ServeFile`.

Use it when you want to serve assets like css and javascript files. If client should confirm and save the file use the `SendFile` instead. Note that compression can be registered through `ctx.CompressWriter(true)` or `app.Use(iris.Compression)`.

func (*Context) ServeFileWithRate

func (ctx *Context) ServeFileWithRate(filename string, limit float64, burst int) error

ServeFileWithRate same as `ServeFile` but it can throttle the speed of reading and though writing the file to the client.

func (*Context) SetCookie

func (ctx *Context) SetCookie(cookie *http.Cookie, options ...CookieOption)

SetCookie adds a cookie. Use of the "options" is not required, they can be used to amend the "cookie".

Example: https://github.com/kataras/iris/tree/master/_examples/cookies/basic

func (*Context) SetCookieKV

func (ctx *Context) SetCookieKV(name, value string, options ...CookieOption)

SetCookieKV adds a cookie, requires the name(string) and the value(string).

By default it expires after 365 days and it is added to the root URL path, use the `CookieExpires` and `CookiePath` to modify them. Alternatively: ctx.SetCookie(&http.Cookie{...}) or ctx.AddCookieOptions(...)

If you want to set custom the path: ctx.SetCookieKV(name, value, iris.CookiePath("/custom/path/cookie/will/be/stored"))

If you want to be visible only to current request path: (note that client should be responsible for that if server sent an empty cookie's path, all browsers are compatible) ctx.SetCookieKV(name, value, iris.CookieCleanPath/iris.CookiePath("")) More:

iris.CookieExpires(time.Duration)
iris.CookieHTTPOnly(false)

Examples: https://github.com/kataras/iris/tree/master/_examples/cookies/basic

func (*Context) SetCurrentRoute

func (ctx *Context) SetCurrentRoute(route RouteReadOnly)

SetCurrentRoute sets the route internally, See `GetCurrentRoute()` method too. It's being initialized by the Router. See `Exec` or `SetHandlers/AddHandler` methods to simulate a request.

func (*Context) SetErr

func (ctx *Context) SetErr(err error)

SetErr is just a helper that sets an error value as a context value, it does nothing more. Also, by-default this error's value is written to the client on failures when no registered error handler is available (see `Party.On(Any)ErrorCode`). See `GetErr` to retrieve it back.

To remove an error simply pass nil.

Note that, if you want to stop the chain with an error see the `StopWithError/StopWithPlainError` instead.

func (*Context) SetHandlers

func (ctx *Context) SetHandlers(handlers Handlers)

SetHandlers replaces all handlers with the new.

func (*Context) SetID

func (ctx *Context) SetID(id interface{})

SetID sets an ID, any value, to the Request Context. If possible the "id" should implement a `String() string` method so it can be rendered on `Context.String` method.

See `GetID` and `middleware/requestid` too.

func (*Context) SetLanguage

func (ctx *Context) SetLanguage(langCode string)

SetLanguage force-sets the language for i18n, can be used inside a middleare. It has the highest priority over the rest and if it is empty then it is ignored, if it set to a static string of "default" or to the default language's code then the rest of the language extractors will not be called at all and the default language will be set instead.

See `i18n.ExtractFunc` for a more organised way of the same feature.

func (*Context) SetLastModified

func (ctx *Context) SetLastModified(modtime time.Time)

SetLastModified sets the "Last-Modified" based on the "modtime" input. If "modtime" is zero then it does nothing.

It's mostly internally on core/router and context packages.

func (*Context) SetMaxRequestBodySize

func (ctx *Context) SetMaxRequestBodySize(limitOverBytes int64)

SetMaxRequestBodySize sets a limit to the request body size should be called before reading the request body from the client.

func (*Context) Skip

func (ctx *Context) Skip()

Skip skips/ignores the next handler from the handlers chain, it should be used inside a middleware.

func (*Context) SkipTransactions

func (ctx *Context) SkipTransactions()

SkipTransactions if called then skip the rest of the transactions or all of them if called before the first transaction

func (*Context) StatusCode

func (ctx *Context) StatusCode(statusCode int)

StatusCode sets the status code header to the response. Look .GetStatusCode & .FireStatusCode too.

Remember, the last one before .Write matters except recorder and transactions.

func (*Context) StopExecution

func (ctx *Context) StopExecution()

StopExecution stops the handlers chain of this request. Meaning that any following `Next` calls are ignored, as a result the next handlers in the chain will not be fire.

func (*Context) StopWithError

func (ctx *Context) StopWithError(statusCode int, err error)

StopWithError stops the handlers chain and writes the "statusCode" among with the error "err". It Calls the `SetErr` method so error handlers can access the given error.

If the status code is a failure one then it will also fire the specified error code handler.

func (*Context) StopWithJSON

func (ctx *Context) StopWithJSON(statusCode int, jsonObject interface{})

StopWithJSON stops the handlers chain, writes the status code and sends a JSON response.

If the status code is a failure one then it will also fire the specified error code handler.

func (*Context) StopWithPlainError

func (ctx *Context) StopWithPlainError(statusCode int, err error)

StopWithPlainError like `StopWithError` but it does NOT write anything to the response writer, it stores the error so any error handler matching the given "statusCode" can handle it by its own.

func (*Context) StopWithProblem

func (ctx *Context) StopWithProblem(statusCode int, problem Problem)

StopWithProblem stops the handlers chain, writes the status code and sends an application/problem+json response. See `iris.NewProblem` to build a "problem" value correctly.

If the status code is a failure one then it will also fire the specified error code handler.

func (*Context) StopWithStatus

func (ctx *Context) StopWithStatus(statusCode int)

StopWithStatus stops the handlers chain and writes the "statusCode".

If the status code is a failure one then it will also fire the specified error code handler.

func (*Context) StopWithText

func (ctx *Context) StopWithText(statusCode int, plainText string)

StopWithText stops the handlers chain and writes the "statusCode" among with a message "plainText".

If the status code is a failure one then it will also fire the specified error code handler.

func (*Context) StreamWriter

func (ctx *Context) StreamWriter(writer func(w io.Writer) error) error

StreamWriter registers the given stream writer for populating response body.

Access to context's and/or its' members is forbidden from writer.

This function may be used in the following cases:

* if response body is too big (more than iris.LimitRequestBodySize(if set)).
* if response body is streamed from slow external sources.
* if response body must be streamed to the client in chunks.
(aka `http server push`).

func (*Context) String

func (ctx *Context) String() string

String returns the string representation of this request.

It returns the Context's ID given by a `SetID`call, followed by the client's IP and the method:uri.

func (*Context) Subdomain

func (ctx *Context) Subdomain() (subdomain string)

Subdomain returns the subdomain of this request, if any. Note that this is a fast method which does not cover all cases.

func (*Context) Text

func (ctx *Context) Text(format string, args ...interface{}) (int, error)

Text writes out a string as plain text.

func (*Context) Tr

func (ctx *Context) Tr(message string, values ...interface{}) string

Tr returns a i18n localized message based on format with optional arguments. See `GetLocale` too.

Example: https://github.com/kataras/iris/tree/master/_examples/i18n

func (*Context) TransactionsSkipped

func (ctx *Context) TransactionsSkipped() bool

TransactionsSkipped returns true if the transactions skipped or canceled at all.

func (*Context) URLParam

func (ctx *Context) URLParam(name string) string

URLParam returns the get parameter from a request, if any.

func (*Context) URLParamBool

func (ctx *Context) URLParamBool(name string) (bool, error)

URLParamBool returns the url query parameter as boolean value from a request, returns an error if parse failed.

func (*Context) URLParamDefault

func (ctx *Context) URLParamDefault(name string, def string) string

URLParamDefault returns the get parameter from a request, if not found then "def" is returned.

func (*Context) URLParamEscape

func (ctx *Context) URLParamEscape(name string) string

URLParamEscape returns the escaped url query parameter from a request.

func (*Context) URLParamExists

func (ctx *Context) URLParamExists(name string) bool

URLParamExists returns true if the url parameter exists, otherwise false.

func (*Context) URLParamFloat64

func (ctx *Context) URLParamFloat64(name string) (float64, error)

URLParamFloat64 returns the url query parameter as float64 value from a request, returns an error and -1 if parse failed.

func (*Context) URLParamFloat64Default

func (ctx *Context) URLParamFloat64Default(name string, def float64) float64

URLParamFloat64Default returns the url query parameter as float64 value from a request, if not found or parse failed then "def" is returned.

func (*Context) URLParamInt

func (ctx *Context) URLParamInt(name string) (int, error)

URLParamInt returns the url query parameter as int value from a request, returns -1 and an error if parse failed or not found.

func (*Context) URLParamInt32Default

func (ctx *Context) URLParamInt32Default(name string, def int32) int32

URLParamInt32Default returns the url query parameter as int32 value from a request, if not found or parse failed then "def" is returned.

func (*Context) URLParamInt64

func (ctx *Context) URLParamInt64(name string) (int64, error)

URLParamInt64 returns the url query parameter as int64 value from a request, returns -1 and an error if parse failed or not found.

func (*Context) URLParamInt64Default

func (ctx *Context) URLParamInt64Default(name string, def int64) int64

URLParamInt64Default returns the url query parameter as int64 value from a request, if not found or parse failed then "def" is returned.

func (*Context) URLParamIntDefault

func (ctx *Context) URLParamIntDefault(name string, def int) int

URLParamIntDefault returns the url query parameter as int value from a request, if not found or parse failed then "def" is returned.

func (*Context) URLParamTrim

func (ctx *Context) URLParamTrim(name string) string

URLParamTrim returns the url query parameter with trailing white spaces removed from a request.

func (*Context) URLParams

func (ctx *Context) URLParams() map[string]string

URLParams returns a map of GET query parameters separated by comma if more than one it returns an empty map if nothing found.

func (*Context) UnmarshalBody

func (ctx *Context) UnmarshalBody(outPtr interface{}, unmarshaler Unmarshaler) error

UnmarshalBody reads the request's body and binds it to a value or pointer of any type Examples of usage: context.ReadJSON, context.ReadXML.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-custom-via-unmarshaler/main.go

func (*Context) UnregisterDependency

func (ctx *Context) UnregisterDependency(typ reflect.Type) bool

UnregisterDependency removes a dependency based on its type. Reports whether a dependency with that type was found and removed successfully.

func (*Context) UploadFormFiles

func (ctx *Context) UploadFormFiles(destDirectory string, before ...func(*Context, *multipart.FileHeader)) (n int64, err error)

UploadFormFiles uploads any received file(s) from the client to the system physical location "destDirectory".

The second optional argument "before" gives caller the chance to modify the *miltipart.FileHeader before saving to the disk, it can be used to change a file's name based on the current request, all FileHeader's options can be changed. You can ignore it if you don't need to use this capability before saving a file to the disk.

Note that it doesn't check if request body streamed.

Returns the copied length as int64 and a not nil error if at least one new file can't be created due to the operating system's permissions or http.ErrMissingFile if no file received.

If you want to receive & accept files and manage them manually you can use the `context#FormFile` instead and create a copy function that suits your needs, the below is for generic usage.

The default form's memory maximum size is 32MB, it can be changed by the

`iris#WithPostMaxMemory` configurator at main configuration passed on `app.Run`'s second argument.

See `FormFile` to a more controlled to receive a file.

Example: https://github.com/kataras/iris/tree/master/_examples/file-server/upload-files

func (*Context) UpsertCookie

func (ctx *Context) UpsertCookie(cookie *http.Cookie, options ...CookieOption) bool

UpsertCookie adds a cookie to the response like `SetCookie` does but it will also perform a replacement of the cookie if already set by a previous `SetCookie` call. It reports whether the cookie is new (true) or an existing one was updated (false).

func (*Context) Values

func (ctx *Context) Values() *memstore.Store

Values returns the current "user" storage. Named path parameters and any optional data can be saved here. This storage, as the whole context, is per-request lifetime.

You can use this function to Set and Get local values that can be used to share information between handlers and middleware.

func (*Context) View

func (ctx *Context) View(filename string, optionalViewModel ...interface{}) error

View renders a template based on the registered view engine(s). First argument accepts the filename, relative to the view engine's Directory and Extension, i.e: if directory is "./templates" and want to render the "./templates/users/index.html" then you pass the "users/index.html" as the filename argument.

The second optional argument can receive a single "view model" that will be binded to the view template if it's not nil, otherwise it will check for previous view data stored by the `ViewData` even if stored at any previous handler(middleware) for the same request.

Look .ViewData and .ViewLayout too.

Examples: https://github.com/kataras/iris/tree/master/_examples/view

func (*Context) ViewData

func (ctx *Context) ViewData(key string, value interface{})

ViewData saves one or more key-value pair in order to be passed if and when .View is being called afterwards, in the same request. Useful when need to set or/and change template data from previous hanadlers in the chain.

If .View's "binding" argument is not nil and it's not a type of map then these data are being ignored, binding has the priority, so the main route's handler can still decide. If binding is a map or iris.Map then these data are being added to the view data and passed to the template.

After .View, the data are not destroyed, in order to be re-used if needed (again, in the same request as everything else), to clear the view data, developers can call: ctx.Set(ctx.Application().ConfigurationReadOnly().GetViewDataContextKey(), nil)

If 'key' is empty then the value is added as it's (struct or map) and developer is unable to add other value.

Look .ViewLayout and .View too.

Example: https://github.com/kataras/iris/tree/master/_examples/view/context-view-data/

func (*Context) ViewEngine

func (ctx *Context) ViewEngine(engine ViewEngine)

ViewEngine registers a view engine for the current chain of handlers. It overrides any previously registered engines, including the application's root ones. Note that, because performance is everything, the "engine" MUST be already ready-to-use, meaning that its `Load` method should be called once before this method call.

To register a view engine per-group of groups too see `Party.RegisterView` instead.

func (*Context) ViewLayout

func (ctx *Context) ViewLayout(layoutTmplFile string)

ViewLayout sets the "layout" option if and when .View is being called afterwards, in the same request. Useful when need to set or/and change a layout based on the previous handlers in the chain.

Note that the 'layoutTmplFile' argument can be set to iris.NoLayout to disable the layout for a specific view render action, it disables the engine's configuration's layout property.

Look .ViewData and .View too.

Example: https://github.com/kataras/iris/tree/master/_examples/view/context-view-data/

func (*Context) VisitAllCookies

func (ctx *Context) VisitAllCookies(visitor func(name string, value string))

VisitAllCookies takes a visitor function which is called on each (request's) cookies' name and value.

func (*Context) Write

func (ctx *Context) Write(rawBody []byte) (int, error)

Write writes the data to the connection as part of an HTTP reply.

If WriteHeader has not yet been called, Write calls WriteHeader(http.StatusOK) before writing the data. If the Header does not contain a Content-Type line, Write adds a Content-Type set to the result of passing the initial 512 bytes of written data to DetectContentType.

Depending on the HTTP protocol version and the client, calling Write or WriteHeader may prevent future reads on the Request.Body. For HTTP/1.x requests, handlers should read any needed request body data before writing the response. Once the headers have been flushed (due to either an explicit Flusher.Flush call or writing enough data to trigger a flush), the request body may be unavailable. For HTTP/2 requests, the Go HTTP server permits handlers to continue to read the request body while concurrently writing the response. However, such behavior may not be supported by all HTTP/2 clients. Handlers should read before writing if possible to maximize compatibility.

func (*Context) WriteNotModified

func (ctx *Context) WriteNotModified()

WriteNotModified sends a 304 "Not Modified" status code to the client, it makes sure that the content type, the content length headers and any "ETag" are removed before the response sent.

It's mostly used internally on core/router/fs.go and context methods.

func (*Context) WriteString

func (ctx *Context) WriteString(body string) (n int, err error)

WriteString writes a simple string to the response.

Returns the number of bytes written and any write error encountered.

func (*Context) WriteWithExpiration

func (ctx *Context) WriteWithExpiration(body []byte, modtime time.Time) (int, error)

WriteWithExpiration works like `Write` but it will check if a resource is modified, based on the "modtime" input argument, otherwise sends a 304 status code in order to let the client-side render the cached content.

func (*Context) Writef

func (ctx *Context) Writef(format string, a ...interface{}) (n int, err error)

Writef formats according to a format specifier and writes to the response.

Returns the number of bytes written and any write error encountered.

func (*Context) XML

func (ctx *Context) XML(v interface{}, opts ...XML) (int, error)

XML marshals the given interface object and writes the XML response to the client. To render maps as XML see the `XMLMap` package-level function.

func (*Context) YAML

func (ctx *Context) YAML(v interface{}) (int, error)

YAML marshals the "v" using the yaml marshaler and renders its result to the client.

type CookieOption

type CookieOption func(ctx *Context, c *http.Cookie, op uint8)

CookieOption is the type of function that is accepted on context's methods like `SetCookieKV`, `RemoveCookie` and `SetCookie` as their (last) variadic input argument to amend the to-be-sent cookie.

The "op" is the operation code, 0 is GET, 1 is SET and 2 is REMOVE.

func CookieAllowReclaim

func CookieAllowReclaim(cookieNames ...string) CookieOption

CookieAllowReclaim accepts the Context itself. If set it will add the cookie to (on `CookieSet`, `CookieSetKV`, `CookieUpsert`) or remove the cookie from (on `CookieRemove`) the Request object too.

func CookieAllowSubdomains

func CookieAllowSubdomains(cookieNames ...string) CookieOption

CookieAllowSubdomains set to the Cookie Options in order to allow subdomains to have access to the cookies. It sets the cookie's Domain field (if was empty) and it also sets the cookie's SameSite to lax mode too.

func CookieEncoding

func CookieEncoding(encoding SecureCookie, cookieNames ...string) CookieOption

CookieEncoding accepts a value which implements `Encode` and `Decode` methods. It calls its `Encode` on `Context.SetCookie, UpsertCookie, and SetCookieKV` methods. And on `Context.GetCookie` method it calls its `Decode`. If "cookieNames" slice is not empty then only cookies with that `Name` will be encoded on set and decoded on get, that way you can encrypt specific cookie names (like the session id) and let the rest of the cookies "insecure".

Example: https://github.com/kataras/iris/tree/master/_examples/cookies/securecookie

func CookieExpires

func CookieExpires(durFromNow time.Duration) CookieOption

CookieExpires is a `CookieOption`. Use it to change the cookie's Expires and MaxAge fields by passing the lifetime of the cookie.

func CookieHTTPOnly

func CookieHTTPOnly(httpOnly bool) CookieOption

CookieHTTPOnly is a `CookieOption`. Use it to set the cookie's HttpOnly field to false or true. HttpOnly field defaults to true for `RemoveCookie` and `SetCookieKV`. See `CookieSecure` too.

func CookiePath

func CookiePath(path string) CookieOption

CookiePath is a `CookieOption`. Use it to change the cookie's Path field.

func CookieSameSite

func CookieSameSite(sameSite http.SameSite) CookieOption

CookieSameSite sets a same-site rule for cookies to set. SameSite allows a server to define a cookie attribute making it impossible for the browser to send this cookie along with cross-site requests. The main goal is to mitigate the risk of cross-origin information leakage, and provide some protection against cross-site request forgery attacks.

See https://tools.ietf.org/html/draft-ietf-httpbis-cookie-same-site-00 for details.

type DependenciesMap

type DependenciesMap map[reflect.Type]reflect.Value

DependenciesMap is the type which context serve-time struct dependencies are stored with.

type Filter

type Filter func(*Context) bool

Filter is just a type of func(Handler) bool which reports whether an action must be performed based on the incoming request.

See `NewConditionalHandler` for more.

type Handler

type Handler func(*Context)

A Handler responds to an HTTP request. It writes reply headers and data to the Context.ResponseWriter() and then return. Returning signals that the request is finished; it is not valid to use the Context after or concurrently with the completion of the Handler call.

Depending on the HTTP client software, HTTP protocol version, and any intermediaries between the client and the iris server, it may not be possible to read from the Context.Request().Body after writing to the Context.ResponseWriter(). Cautious handlers should read the Context.Request().Body first, and then reply.

Except for reading the body, handlers should not modify the provided Context.

If Handler panics, the server (the caller of Handler) assumes that the effect of the panic was isolated to the active request. It recovers the panic, logs a stack trace to the server error log, and hangs up the connection.

func NewConditionalHandler

func NewConditionalHandler(filter Filter, handlers ...Handler) Handler

NewConditionalHandler returns a single Handler which can be registered as a middleware. Filter is just a type of Handler which returns a boolean. Handlers here should act like middleware, they should contain `ctx.Next` to proceed to the next handler of the chain. Those "handlers" are registered to the per-request context.

It checks the "filter" and if passed then it, correctly, executes the "handlers".

If passed, this function makes sure that the Context's information about its per-request handler chain based on the new "handlers" is always updated.

If not passed, then simply the Next handler(if any) is executed and "handlers" are ignored.

Example can be found at: _examples/routing/conditional-chain.

type Handlers

type Handlers []Handler

Handlers is just a type of slice of []Handler.

See `Handler` for more.

func JoinHandlers

func JoinHandlers(h1 Handlers, h2 Handlers) Handlers

JoinHandlers returns a copy of "h1" and "h2" Handlers slice joined as one slice of Handlers.

func UpsertHandlers

func UpsertHandlers(h1 Handlers, h2 Handlers) Handlers

UpsertHandlers like `JoinHandlers` but it does NOT copies the handlers entries and it does remove duplicates.

type I18nReadOnly

type I18nReadOnly interface {
	Tags() []language.Tag
	GetLocale(ctx *Context) Locale
	Tr(lang string, format string, args ...interface{}) string
}

I18nReadOnly is the interface which ontains the read-only i18n features. Read the "i18n" package fo details.

type JSON

type JSON struct {
	// http-specific
	StreamingJSON bool
	// content-specific
	UnescapeHTML bool
	Indent       string
	Prefix       string
	ASCII        bool // if true writes with unicode to ASCII content.
	Secure       bool // if true then it prepends a "while(1);" when Go slice (to JSON Array) value.
	// proto.Message specific marshal options.
	Proto ProtoMarshalOptions
}

JSON contains the options for the JSON (Context's) Renderer.

type JSONP

type JSONP struct {
	// content-specific
	Indent   string
	Callback string
}

JSONP contains the options for the JSONP (Context's) Renderer.

type Locale

type Locale interface {
	// Index returns the current locale index from the languages list.
	Index() int
	// Tag returns the full language Tag attached tothis Locale,
	// it should be uniue across different Locales.
	Tag() *language.Tag
	// Language should return the exact languagecode of this `Locale`
	//that the user provided on `New` function.
	//
	// Same as `Tag().String()` but it's static.
	Language() string
	// GetMessage should return translated text based n the given "key".
	GetMessage(key string, args ...interface{}) string
}

Locale is the interface which returns from a `Localizer.GetLocale` metod. It serves the transltions based on "key" or format. See `GetMessage`.

type Map

type Map = map[string]interface{}

Map is just a type alias of the map[string]interface{} type.

type Markdown

type Markdown struct {
	// content-specific
	Sanitize bool
}

Markdown contains the options for the Markdown (Context's) Renderer.

type N

type N struct {
	Text, HTML string
	Markdown   []byte
	Binary     []byte

	JSON     interface{}
	Problem  Problem
	JSONP    interface{}
	XML      interface{}
	YAML     interface{}
	Protobuf interface{}
	MsgPack  interface{}

	Other []byte // custom content types.
}

N is a struct which can be passed on the `Context.Negotiate` method. It contains fields which should be filled based on the `Context.Negotiation()` server side values. If no matched mime then its "Other" field will be sent, which should be a string or []byte. It completes the `ContentSelector` interface.

func (N) SelectContent

func (n N) SelectContent(mime string) interface{}

SelectContent returns a content based on the matched negotiated "mime".

type NegotiationAcceptBuilder

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

NegotiationAcceptBuilder builds the accepted mime types and charset

and "Accept-Charset" headers respectfully. The default values are set by the client side, server can append or override those. The end result will be challenged with runtime preffered set of content types and charsets.

See the `Negotiate` method too.

func (*NegotiationAcceptBuilder) Binary

Binary adds the "application/octet-stream" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) Charset

Charset adds one or more client accepted charsets. Returns itself.

func (*NegotiationAcceptBuilder) Encoding

func (n *NegotiationAcceptBuilder) Encoding(encoding ...string) *NegotiationAcceptBuilder

Encoding adds one or more client accepted encoding algorithms. Returns itself.

func (*NegotiationAcceptBuilder) EncodingGzip

EncodingGzip adds the "gzip" as accepted encoding. Returns itself.

func (*NegotiationAcceptBuilder) HTML

HTML adds the "text/html" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) JSON

JSON adds the "application/json" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) JSONP

JSONP adds the "text/javascript" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) MIME

MIME adds accepted client's mime type(s). Returns itself.

func (*NegotiationAcceptBuilder) Markdown

Markdown adds the "text/markdown" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) MsgPack

MsgPack adds the "application/msgpack" and "application/x-msgpack" as accepted client content types. Returns itself.

func (*NegotiationAcceptBuilder) Override

Override clears the default values for accept and accept charset. Returns itself.

func (*NegotiationAcceptBuilder) Problem

Problem adds the "application/problem+json" and "application/problem-xml" as accepted client content types. Returns itself.

func (*NegotiationAcceptBuilder) Protobuf

Protobuf adds the "application/x-protobuf" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) Text

Text adds the "text/plain" as accepted client content type. Returns itself.

func (*NegotiationAcceptBuilder) XML

XML adds the "text/xml" and "application/xml" as accepted client content types. Returns itself.

func (*NegotiationAcceptBuilder) YAML

YAML adds the "application/x-yaml" as accepted client content type. Returns itself.

type NegotiationBuilder

type NegotiationBuilder struct {
	Accept NegotiationAcceptBuilder
	// contains filtered or unexported fields
}

NegotiationBuilder returns from the `Context.Negotitation` and can be used inside chain of handlers to build server-side mime type(s), charset(s) and encoding algorithm(s) that should match with the client's Accept, Accept-Charset and Accept-Encoding headers (by-default). To modify the client's accept use its "Accept" field which it's the `NegotitationAcceptBuilder`.

See the `Negotiate` method too.

func (*NegotiationBuilder) Any

func (n *NegotiationBuilder) Any(v ...interface{}) *NegotiationBuilder

Any registers a wildcard that can match any client's accept content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) Binary

func (n *NegotiationBuilder) Binary(v ...[]byte) *NegotiationBuilder

Binary registers the "application/octet-stream" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "application/octet-stream" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) Build

func (n *NegotiationBuilder) Build() (contentType, charset, encoding string, content interface{})

Build calculates the client's and server's mime type(s), charset(s) and encoding and returns the final content type, charset and encoding that server should render to the client. It does not clear the fields, use the `Clear` method if neeeded.

The returned "content" can be nil if the matched "contentType" does not provide any value, in that case the `Context.Negotiate(v)` must be called with a non-nil value.

func (*NegotiationBuilder) Charset

func (n *NegotiationBuilder) Charset(charset ...string) *NegotiationBuilder

Charset overrides the application's config's charset (which defaults to "utf-8") that a client should match for (through Accept-Charset header or custom through `NegotitationBuilder.Accept.Override().Charset(...)` call). Do not set it if you don't know what you're doing.

Returns itself for recursive calls.

func (*NegotiationBuilder) Clear

Clear clears the prioritized mime type(s), charset(s) and any contents relative to those mime type(s). The "Accept" field is stay as it is, use its `Override` method to clear out the client's accepted mime type(s) and charset(s).

func (*NegotiationBuilder) Encoding

func (n *NegotiationBuilder) Encoding(encoding ...string) *NegotiationBuilder

Encoding registers one or more encoding algorithms by name, i.e gzip, deflate, br, snappy, s2. that a client should match for (through Accept-Encoding header).

Returns itself for recursive calls.

func (*NegotiationBuilder) EncodingGzip

func (n *NegotiationBuilder) EncodingGzip() *NegotiationBuilder

EncodingGzip registers the "gzip" encoding algorithm that a client should match for (through Accept-Encoding header or call of Accept.Encoding(enc)).

It will make resources to served by "gzip" if Accept-Encoding contains the "gzip" as well.

Returns itself for recursive calls.

func (*NegotiationBuilder) HTML

HTML registers the "text/html" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "text/html" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) JSON

func (n *NegotiationBuilder) JSON(v ...interface{}) *NegotiationBuilder

JSON registers the "application/json" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "application/json" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) JSONP

func (n *NegotiationBuilder) JSONP(v ...interface{}) *NegotiationBuilder

JSONP registers the "text/javascript" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "javascript/javascript" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) MIME

func (n *NegotiationBuilder) MIME(mime string, content interface{}) *NegotiationBuilder

MIME registers a mime type and optionally the value that should be rendered through `Context.Negotiate` when this mime type is accepted by client.

Returns itself for recursive calls.

func (*NegotiationBuilder) Markdown

func (n *NegotiationBuilder) Markdown(v ...[]byte) *NegotiationBuilder

Markdown registers the "text/markdown" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "text/markdown" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) MsgPack

func (n *NegotiationBuilder) MsgPack(v ...interface{}) *NegotiationBuilder

MsgPack registers the "application/x-msgpack" and "application/msgpack" content types and, optionally, a value that `Context.Negotiate` will render when a client accepts one of the "application/x-msgpack" or "application/msgpack" content types.

Returns itself for recursive calls.

func (*NegotiationBuilder) Problem

func (n *NegotiationBuilder) Problem(v ...interface{}) *NegotiationBuilder

Problem registers the "application/problem+json" or "application/problem+xml" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "application/problem+json" or the "application/problem+xml" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) Protobuf

func (n *NegotiationBuilder) Protobuf(v ...interface{}) *NegotiationBuilder

Protobuf registers the "application/x-protobuf" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "application/x-protobuf" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) Text

Text registers the "text/plain" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "text/plain" content type.

Returns itself for recursive calls.

func (*NegotiationBuilder) XML

func (n *NegotiationBuilder) XML(v ...interface{}) *NegotiationBuilder

XML registers the "text/xml" and "application/xml" content types and, optionally, a value that `Context.Negotiate` will render when a client accepts one of the "text/xml" or "application/xml" content types.

Returns itself for recursive calls.

func (*NegotiationBuilder) YAML

func (n *NegotiationBuilder) YAML(v ...interface{}) *NegotiationBuilder

YAML registers the "application/x-yaml" content type and, optionally, a value that `Context.Negotiate` will render when a client accepts the "application/x-yaml" content type.

Returns itself for recursive calls.

type Pool

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

Pool is the context pool, it's used inside router and the framework by itself.

func New

func New(newFunc func() interface{}) *Pool

New creates and returns a new context pool.

func (*Pool) Acquire

func (c *Pool) Acquire(w http.ResponseWriter, r *http.Request) *Context

Acquire returns a Context from pool. See Release.

func (*Pool) Release

func (c *Pool) Release(ctx *Context)

Release puts a Context back to its pull, this function releases its resources. See Acquire.

func (*Pool) ReleaseLight

func (c *Pool) ReleaseLight(ctx *Context)

ReleaseLight will just release the object back to the pool, but the clean method is caller's responsibility now, currently this is only used on `SPABuilder`.

type Problem

type Problem map[string]interface{}

Problem Details for HTTP APIs. Pass a Problem value to `context.Problem` to write an "application/problem+json" response.

Read more at: https://github.com/kataras/iris/wiki/Routing-error-handlers

func NewProblem

func NewProblem() Problem

NewProblem retruns a new Problem. Head over to the `Problem` type godoc for more.

func (Problem) Cause

func (p Problem) Cause(cause Problem) Problem

Cause sets the problem's cause field. Any chain of problems.

func (Problem) Detail

func (p Problem) Detail(detail string) Problem

Detail sets the problem's detail field. Example: "Optional details about the error...".

func (Problem) DetailErr

func (p Problem) DetailErr(err error) Problem

DetailErr calls `Detail(err.Error())`.

func (Problem) Error

func (p Problem) Error() string

Error method completes the go error. Returns the "[Status] Title" string form of this Problem. If Problem is not a valid one, it returns "invalid problem".

func (Problem) GetTempKey

func (p Problem) GetTempKey(key string) interface{}

GetTempKey returns the temp value based on "key" and removes it.

func (Problem) Instance

func (p Problem) Instance(instanceURI string) Problem

Instance sets the problem's instance field. A URI reference that identifies the specific occurrence of the problem. It may or may not yield further information if dereferenced.

func (Problem) Key

func (p Problem) Key(key string, value interface{}) Problem

Key sets a custom key-value pair.

func (Problem) MarshalXML

func (p Problem) MarshalXML(e *xml.Encoder, start xml.StartElement) error

MarshalXML makes this Problem XML-compatible content to render.

func (Problem) Status

func (p Problem) Status(statusCode int) Problem

Status sets HTTP error code for problem's status field. Example: 404

It is required.

func (Problem) TempKey

func (p Problem) TempKey(key string, value interface{}) Problem

TempKey sets a temporary key-value pair, which is being removed on the its first get.

func (Problem) Title

func (p Problem) Title(title string) Problem

Title sets the problem's title field. Example: "Your request parameters didn't validate." It is set to status Code text if missing, (e.g., "Not Found" for 404, and so on).

func (Problem) Type

func (p Problem) Type(uri string) Problem

Type URI SHOULD resolve to HTML [W3C.REC-html5-20141028] documentation that explains how to resolve the problem. Example: "https://example.net/validation-error"

Empty URI or "about:blank", when used as a problem type, indicates that the problem has no additional semantics beyond that of the HTTP status code. When "about:blank" is used and "title" was not set-ed, the title is being automatically set the same as the recommended HTTP status phrase for that code (e.g., "Not Found" for 404, and so on) on `Status` call.

Relative paths are also valid when writing this Problem to an Iris Context.

func (Problem) Validate

func (p Problem) Validate() bool

Validate reports whether this Problem value is a valid problem one.

type ProblemOptions

type ProblemOptions struct {
	// JSON are the optional JSON renderer options.
	JSON JSON

	// RenderXML set to true if want to render as XML doc.
	// See `XML` option field too.
	RenderXML bool
	// XML are the optional XML renderer options.
	// Affect only when `RenderXML` field is set to true.
	XML XML

	// RetryAfter sets the Retry-After response header.
	// https://tools.ietf.org/html/rfc7231#section-7.1.3
	// The value can be one of those:
	// time.Time
	// time.Duration for seconds
	// int64, int, float64 for seconds
	// string for duration string or for datetime string.
	//
	// Examples:
	// time.Now().Add(5 * time.Minute),
	// 300 * time.Second,
	// "5m",
	// 300
	RetryAfter interface{}
	// A function that, if specified, can dynamically set
	// retry-after based on the request. Useful for ProblemOptions reusability.
	// Should return time.Time, time.Duration, int64, int, float64 or string.
	//
	// Overrides the RetryAfter field.
	RetryAfterFunc func(*Context) interface{}
}

ProblemOptions the optional settings when server replies with a Problem. See `Context.Problem` method and `Problem` type for more details.

func (*ProblemOptions) Apply

func (o *ProblemOptions) Apply(ctx *Context)

Apply accepts a Context and applies specific response-time options.

type ProtoMarshalOptions

type ProtoMarshalOptions = protojson.MarshalOptions

ProtoMarshalOptions is a type alias for protojson.MarshalOptions.

type ProtoUnmarshalOptions

type ProtoUnmarshalOptions = protojson.UnmarshalOptions

ProtoUnmarshalOptions is a type alias for protojson.UnmarshalOptions.

type Referrer

type Referrer struct {
	Type       ReferrerType             `json:"type" form:"referrer_type" xml:"Type" yaml:"Type" toml:"Type"`
	Label      string                   `json:"label" form:"referrer_form" xml:"Label" yaml:"Label" toml:"Label"`
	URL        string                   `json:"url" form:"referrer_url" xml:"URL" yaml:"URL" toml:"URL"`
	Subdomain  string                   `json:"subdomain" form:"referrer_subdomain" xml:"Subdomain" yaml:"Subdomain" toml:"Subdomain"`
	Domain     string                   `json:"domain" form:"referrer_domain" xml:"Domain" yaml:"Domain" toml:"Domain"`
	Tld        string                   `json:"tld" form:"referrer_tld" xml:"Tld" yaml:"Tld" toml:"Tld"`
	Path       string                   `json:"path" form:"referrer_path" xml:"Path" yaml:"Path" toml:"Path"`
	Query      string                   `json:"query" form:"referrer_query" xml:"Query" yaml:"Query" toml:"GoogleType"`
	GoogleType ReferrerGoogleSearchType `json:"googleType" form:"referrer_google_type" xml:"GoogleType" yaml:"GoogleType" toml:"GoogleType"`
}

Referrer contains the extracted information from the `GetReferrer`

The structure contains struct tags for JSON, form, XML, YAML and TOML. Look the `GetReferrer() Referrer` and `goreferrer` external package.

type ReferrerGoogleSearchType

type ReferrerGoogleSearchType = goreferrer.GoogleSearchType

ReferrerGoogleSearchType is the goreferrer enum for a google search type (organic, adwords).

type ReferrerType

type ReferrerType = goreferrer.ReferrerType

ReferrerType is the goreferrer enum for a referrer type (indirect, direct, email, search, social).

type RequestParams

type RequestParams struct {
	memstore.Store
}

RequestParams is a key string - value string storage which context's request dynamic path params are being kept. Empty if the route is static.

func (*RequestParams) Get

func (r *RequestParams) Get(key string) string

Get returns a path parameter's value based on its route's dynamic path key.

func (*RequestParams) GetDecoded

func (r *RequestParams) GetDecoded(key string) string

GetDecoded returns a path parameter's double-url-query-escaped value based on its route's dynamic path key. same as `GetEscape`.

func (*RequestParams) GetEntry

func (r *RequestParams) GetEntry(key string) memstore.Entry

GetEntry will return the parameter's internal store's `Entry` based on its name/key. If not found it will return an emptry `Entry`.

func (*RequestParams) GetEntryAt

func (r *RequestParams) GetEntryAt(index int) memstore.Entry

GetEntryAt will return the parameter's internal store's `Entry` based on the index. If not found it will return an emptry `Entry`.

func (*RequestParams) GetEscape

func (r *RequestParams) GetEscape(key string) string

GetEscape returns a path parameter's double-url-query-escaped value based on its route's dynamic path key.

func (*RequestParams) GetIntUnslashed

func (r *RequestParams) GetIntUnslashed(key string) (int, bool)

GetIntUnslashed same as Get but it removes the first slash if found. Usage: Get an id from a wildcard path.

Returns -1 and false if not path parameter with that "key" found.

func (*RequestParams) GetTrim

func (r *RequestParams) GetTrim(key string) string

GetTrim returns a path parameter's value without trailing spaces based on its route's dynamic path key.

func (*RequestParams) Set

func (r *RequestParams) Set(key, value string)

Set inserts a parameter value. See `Get` too.

func (*RequestParams) Visit

func (r *RequestParams) Visit(visitor func(key string, value string))

Visit accepts a visitor which will be filled by the key-value params.

type ResponseRecorder

type ResponseRecorder struct {
	ResponseWriter
	// contains filtered or unexported fields
}

A ResponseRecorder is used mostly by context's transactions in order to record and change if needed the body, status code and headers.

Developers are not limited to manually ask to record a response. To turn on the recorder from a Handler, rec := context.Recorder()

func AcquireResponseRecorder

func AcquireResponseRecorder() *ResponseRecorder

AcquireResponseRecorder returns a new *AcquireResponseRecorder from the pool. Releasing is done automatically when request and response is done.

func (*ResponseRecorder) BeginRecord

func (w *ResponseRecorder) BeginRecord(underline ResponseWriter)

BeginRecord accepts its parent ResponseWriter and prepares itself, the response recorder, to record and send response to the client.

func (*ResponseRecorder) Body

func (w *ResponseRecorder) Body() []byte

Body returns the body tracked from the writer so far, do not use this for edit.

func (*ResponseRecorder) ClearHeaders

func (w *ResponseRecorder) ClearHeaders()

ClearHeaders clears all headers, both temp and underline's response writer.

func (*ResponseRecorder) Clone

func (w *ResponseRecorder) Clone() ResponseWriter

Clone returns a clone of this response writer it copies the header, status code, headers and the beforeFlush finally returns a new ResponseRecorder

func (*ResponseRecorder) CopyTo

func (w *ResponseRecorder) CopyTo(res ResponseWriter)

CopyTo writes a response writer (temp: status code, headers and body) to another response writer

func (*ResponseRecorder) EndResponse

func (w *ResponseRecorder) EndResponse()

EndResponse is auto-called when the whole client's request is done, releases the response recorder and its underline ResponseWriter.

func (*ResponseRecorder) Flush

func (w *ResponseRecorder) Flush()

Flush sends any buffered data to the client.

func (*ResponseRecorder) FlushResponse

func (w *ResponseRecorder) FlushResponse()

FlushResponse the full body, headers and status code to the underline response writer called automatically at the end of each request.

func (*ResponseRecorder) Naive

Naive returns the simple, underline and original http.ResponseWriter that backends this response writer.

func (*ResponseRecorder) Push

func (w *ResponseRecorder) Push(target string, opts *http.PushOptions) (err error)

Push initiates an HTTP/2 server push. This constructs a synthetic request using the given target and options, serializes that request into a PUSH_PROMISE frame, then dispatches that request using the server's request handler. If opts is nil, default options are used.

The target must either be an absolute path (like "/path") or an absolute URL that contains a valid host and the same scheme as the parent request. If the target is a path, it will inherit the scheme and host of the parent request.

The HTTP/2 spec disallows recursive pushes and cross-authority pushes. Push may or may not detect these invalid pushes; however, invalid pushes will be detected and canceled by conforming clients.

Handlers that wish to push URL X should call Push before sending any data that may trigger a request for URL X. This avoids a race where the client issues requests for X before receiving the PUSH_PROMISE for X.

Push returns ErrPushNotSupported if the client has disabled push or if push is not supported on the underlying connection.

func (*ResponseRecorder) Reset

func (w *ResponseRecorder) Reset() bool

Reset clears headers, sets the status code to 200 and clears the cached body.

Implements the `ResponseWriterReseter`.

func (*ResponseRecorder) ResetBody

func (w *ResponseRecorder) ResetBody()

ResetBody resets the response body.

func (*ResponseRecorder) ResetHeaders

func (w *ResponseRecorder) ResetHeaders()

ResetHeaders sets the headers to the underline's response writer's headers, may empty.

func (*ResponseRecorder) SetBody

func (w *ResponseRecorder) SetBody(b []byte)

SetBody overrides the body and sets it to a slice of bytes value.

func (*ResponseRecorder) SetBodyString

func (w *ResponseRecorder) SetBodyString(s string)

SetBodyString overrides the body and sets it to a string value.

func (*ResponseRecorder) Write

func (w *ResponseRecorder) Write(contents []byte) (int, error)

Write Adds the contents to the body reply, it writes the contents temporarily to a value in order to be flushed at the end of the request, this method give us the opportunity to reset the body if needed.

If WriteHeader has not yet been called, Write calls WriteHeader(http.StatusOK) before writing the data. If the Header does not contain a Content-Type line, Write adds a Content-Type set to the result of passing the initial 512 bytes of written data to DetectContentType.

Depending on the HTTP protocol version and the client, calling Write or WriteHeader may prevent future reads on the Request.Body. For HTTP/1.x requests, handlers should read any needed request body data before writing the response. Once the headers have been flushed (due to either an explicit Flusher.Flush call or writing enough data to trigger a flush), the request body may be unavailable. For HTTP/2 requests, the Go HTTP server permits handlers to continue to read the request body while concurrently writing the response. However, such behavior may not be supported by all HTTP/2 clients. Handlers should read before writing if possible to maximize compatibility.

type ResponseWriter

type ResponseWriter interface {
	http.ResponseWriter

	// Naive returns the simple, underline and original http.ResponseWriter
	// that backends this response writer.
	Naive() http.ResponseWriter
	// SetWriter sets the underline http.ResponseWriter
	// that this responseWriter should write on.
	SetWriter(underline http.ResponseWriter)
	// BeginResponse receives an http.ResponseWriter
	// and initialize or reset the response writer's field's values.
	BeginResponse(http.ResponseWriter)
	// EndResponse is the last function which is called right before the server sent the final response.
	//
	// Here is the place which we can make the last checks or do a cleanup.
	EndResponse()

	// IsHijacked reports whether this response writer's connection is hijacked.
	IsHijacked() bool

	// StatusCode returns the status code header value.
	StatusCode() int

	// Written should returns the total length of bytes that were being written to the client.
	// In addition iris provides some variables to help low-level actions:
	// NoWritten, means that nothing were written yet and the response writer is still live.
	// StatusCodeWritten, means that status code was written but no other bytes are written to the client, response writer may closed.
	// > 0 means that the reply was written and it's the total number of bytes were written.
	Written() int

	// SetWritten sets manually a value for written, it can be
	// NoWritten(-1) or StatusCodeWritten(0), > 0 means body length which is useless here.
	SetWritten(int)

	// SetBeforeFlush registers the unique callback which called exactly before the response is flushed to the client.
	SetBeforeFlush(cb func())
	// GetBeforeFlush returns (not execute) the before flush callback, or nil if not set by SetBeforeFlush.
	GetBeforeFlush() func()
	// FlushResponse should be called only once before EndResponse.
	// it tries to send the status code if not sent already
	// and calls the  before flush callback, if any.
	//
	// FlushResponse can be called before EndResponse, but it should
	// be the last call of this response writer.
	FlushResponse()

	// clone returns a clone of this response writer
	// it copies the header, status code, headers and the beforeFlush finally  returns a new ResponseRecorder.
	Clone() ResponseWriter

	// CopyTo writes a response writer (temp: status code, headers and body) to another response writer
	CopyTo(ResponseWriter)

	// Flusher indicates if `Flush` is supported by the client.
	//
	// The default HTTP/1.x and HTTP/2 ResponseWriter implementations
	// support Flusher, but ResponseWriter wrappers may not. Handlers
	// should always test for this ability at runtime.
	//
	// Note that even for ResponseWriters that support Flush,
	// if the client is connected through an HTTP proxy,
	// the buffered data may not reach the client until the response
	// completes.
	Flusher() (http.Flusher, bool)
	// Flush sends any buffered data to the client.
	Flush() // required by compress writer.
}

ResponseWriter interface is used by the context to serve an HTTP handler to construct an HTTP response.

Note: Only this ResponseWriter is an interface in order to be able for developers to change the response writer of the Context via `context.ResetResponseWriter`. The rest of the response writers implementations (ResponseRecorder & CompressResponseWriter) are coupled to the internal ResponseWriter implementation(*responseWriter).

A ResponseWriter may not be used after the Handler has returned.

func AcquireResponseWriter

func AcquireResponseWriter() ResponseWriter

AcquireResponseWriter returns a new *ResponseWriter from the pool. Releasing is done automatically when request and response is done.

type ResponseWriterBodyReseter

type ResponseWriterBodyReseter interface {
	// ResetBody should reset the body and reports back if it could reset successfully.
	ResetBody()
}

ResponseWriterBodyReseter can be implemented by response writers that supports response body overriding (e.g. recorder and compressed).

type ResponseWriterDisabler

type ResponseWriterDisabler interface {
	// Disable should disable this type of response writer and fallback to the default one.
	Disable()
}

ResponseWriterDisabler can be implemented by response writers that can be disabled and restored to their previous state (e.g. compressed).

type ResponseWriterReseter

type ResponseWriterReseter interface {
	// Reset should reset the whole response and reports
	// whether it could reset successfully.
	Reset() bool
}

ResponseWriterReseter can be implemented by response writers that can clear the whole response so a new handler can write into this from the beginning. E.g. recorder, compressed (full) and common writer (status code and headers).

type ResponseWriterWriteTo

type ResponseWriterWriteTo interface {
	WriteTo(dest io.Writer, p []byte)
}

ResponseWriterWriteTo can be implemented by response writers that needs a special encoding before writing to their buffers. E.g. a custom recorder that wraps a custom compressed one.

Not used by the framework itself.

type RouteReadOnly

type RouteReadOnly interface {
	// Name returns the route's name.
	Name() string

	// StatusErrorCode returns 0 for common resource routes
	// or the error code that an http error handler registered on.
	StatusErrorCode() int

	// Method returns the route's method.
	Method() string

	// Subdomains returns the route's subdomain.
	Subdomain() string

	// Path returns the route's original registered path.
	Path() string

	// String returns the form of METHOD, SUBDOMAIN, TMPL PATH.
	String() string

	// IsOnline returns true if the route is marked as "online" (state).
	IsOnline() bool

	// IsStatic reports whether this route is a static route.
	// Does not contain dynamic path parameters,
	// is online and registered on GET HTTP Method.
	IsStatic() bool
	// StaticPath returns the static part of the original, registered route path.
	// if /user/{id} it will return /user
	// if /user/{id}/friend/{friendid:uint64} it will return /user too
	// if /assets/{filepath:path} it will return /assets.
	StaticPath() string

	// ResolvePath returns the formatted path's %v replaced with the args.
	ResolvePath(args ...string) string
	// Trace should writes debug route info to the "w".
	// Should be called after Build.
	Trace(w io.Writer)

	// Tmpl returns the path template,
	// it contains the parsed template
	// for the route's path.
	// May contain zero named parameters.
	//
	// Available after the build state, i.e a request handler or Iris Configurator.
	Tmpl() macro.Template

	// MainHandlerName returns the first registered handler for the route.
	MainHandlerName() string

	// MainHandlerIndex returns the first registered handler's index for the route.
	MainHandlerIndex() int

	// GetLastMod returns the date of last modification of the file served by this route.
	GetLastMod() time.Time
	// GetChangeFreq returns the the page frequently is likely to change.
	GetChangeFreq() string
	// GetPriority returns the priority of this route's URL relative to other URLs on your site.
	GetPriority() float32
}

RouteReadOnly allows decoupled access to the current route inside the context.

type SecureCookie

type SecureCookie interface {
	// Encode should encode the cookie value.
	// Should accept the cookie's name as its first argument
	// and as second argument the cookie value ptr.
	// Should return an encoded value or an empty one if encode operation failed.
	// Should return an error if encode operation failed.
	//
	// Note: Errors are not printed, so you have to know what you're doing,
	// and remember: if you use AES it only supports key sizes of 16, 24 or 32 bytes.
	// You either need to provide exactly that amount or you derive the key from what you type in.
	//
	// See `Decode` too.
	Encode(cookieName string, cookieValue interface{}) (string, error)
	// Decode should decode the cookie value.
	// Should accept the cookie's name as its first argument,
	// as second argument the encoded cookie value and as third argument the decoded value ptr.
	// Should return a decoded value or an empty one if decode operation failed.
	// Should return an error if decode operation failed.
	//
	// Note: Errors are not printed, so you have to know what you're doing,
	// and remember: if you use AES it only supports key sizes of 16, 24 or 32 bytes.
	// You either need to provide exactly that amount or you derive the key from what you type in.
	//
	// See `Encode` too.
	Decode(cookieName string, cookieValue string, cookieValuePtr interface{}) error
}

SecureCookie should encodes and decodes authenticated and optionally encrypted cookie values. See `CookieEncoding` package-level function.

type Transaction

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

Transaction gives the users the opportunity to code their route handlers cleaner and safier it receives a scope which is decided when to send an error to the user, recover from panics stop the execution of the next transactions and so on...

it's default scope is the TransientTransactionScope which is silently skips the current transaction's response if transaction.Complete accepts a non-empty error.

Create and set custom transactions scopes with transaction.SetScope.

For more information please visit the tests.

func (*Transaction) Complete

func (t *Transaction) Complete(err error)

Complete completes the transaction rollback and send an error when the error is not empty. The next steps depends on its Scope.

The error can be a type of context.NewTransactionErrResult().

func (*Transaction) Context

func (t *Transaction) Context() *Context

Context returns the current context of the transaction.

func (*Transaction) SetScope

func (t *Transaction) SetScope(scope TransactionScope)

SetScope sets the current transaction's scope iris.RequestTransactionScope || iris.TransientTransactionScope (default).

type TransactionErrResult

type TransactionErrResult struct {
	StatusCode int
	// if reason is empty then the already relative registered (custom or not)
	// error will be executed if the scope allows that.
	Reason      string
	ContentType string
}

TransactionErrResult could be named also something like 'MaybeError', it is useful to send it on transaction.Complete in order to execute a custom error mesasge to the user.

in simple words it's just a 'traveler message' between the transaction and its scope. it is totally optional

func NewTransactionErrResult

func NewTransactionErrResult() TransactionErrResult

NewTransactionErrResult returns a new transaction result with the given error message, it can be empty too, but if not then the transaction's scope is decided what to do with that

func (TransactionErrResult) Error

func (err TransactionErrResult) Error() string

Error returns the reason given by the user or an empty string

func (TransactionErrResult) IsFailure

func (err TransactionErrResult) IsFailure() bool

IsFailure returns true if this is an actual error

type TransactionScope

type TransactionScope interface {
	// EndTransaction returns if can continue to the next transactions or not (false)
	// called after Complete, empty or not empty error
	EndTransaction(maybeErr TransactionErrResult, ctx *Context) bool
}

TransactionScope is the manager of the transaction's response, can be resseted and skipped from its parent context or execute an error or skip other transactions

type TransactionScopeFunc

type TransactionScopeFunc func(maybeErr TransactionErrResult, ctx *Context) bool

TransactionScopeFunc the transaction's scope signature

func (TransactionScopeFunc) EndTransaction

func (tsf TransactionScopeFunc) EndTransaction(maybeErr TransactionErrResult, ctx *Context) bool

EndTransaction ends the transaction with a callback to itself, implements the TransactionScope interface

type Unmarshaler

type Unmarshaler interface {
	Unmarshal(data []byte, outPtr interface{}) error
}

Unmarshaler is the interface implemented by types that can unmarshal any raw data. TIP INFO: Any pointer to a value which implements the BodyDecoder can be override the unmarshaler.

type UnmarshalerFunc

type UnmarshalerFunc func(data []byte, outPtr interface{}) error

UnmarshalerFunc a shortcut for the Unmarshaler interface

See 'Unmarshaler' and 'BodyDecoder' for more.

Example: https://github.com/kataras/iris/blob/master/_examples/request-body/read-custom-via-unmarshaler/main.go

func (UnmarshalerFunc) Unmarshal

func (u UnmarshalerFunc) Unmarshal(data []byte, v interface{}) error

Unmarshal parses the X-encoded data and stores the result in the value pointed to by v. Unmarshal uses the inverse of the encodings that Marshal uses, allocating maps, slices, and pointers as necessary.

type Validator

type Validator interface {
	Struct(interface{}) error
}

Validator is the validator for request body on Context methods such as ReadJSON, ReadMsgPack, ReadXML, ReadYAML, ReadForm, ReadQuery, ReadBody and e.t.c.

type ViewEngine

type ViewEngine interface {
	// Load should load the templates from a physical system directory or by an embedded one (assets/go-bindata).
	Load() error
	// ExecuteWriter should execute a template by its filename with an optional layout and bindingData.
	ExecuteWriter(w io.Writer, filename string, layout string, bindingData interface{}) error
	// Ext should return the final file extension which this view engine is responsible to render.
	Ext() string
}

ViewEngine is the interface which all view engines should be implemented in order to be registered inside iris.

type ViewEngineFuncer

type ViewEngineFuncer interface {
	// AddFunc should adds a function to the template's function map.
	AddFunc(funcName string, funcBody interface{})
}

ViewEngineFuncer is an addition of a view engine, if a view engine implements that interface then iris can add some closed-relative iris functions like {{ url }}, {{ urlpath }} and {{ tr }}.

type XML

type XML struct {
	// content-specific
	Indent string
	Prefix string
}

XML contains the options for the XML (Context's) Renderer.

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