Ctx implements context.Context

ctx.go

@@ -444,6 +444,28 @@ func (c *DefaultCtx) Cookie(cookie *Cookie) {
 	fasthttp.ReleaseCookie(fcookie)
 }
 
+// Deadline returns the time when work done on behalf of this context
+// should be canceled. Deadline returns ok==false when no deadline is
+// set. Successive calls to Deadline return the same results.
+//
+// Due to current limitations in how fasthttp works, Deadline operates as a nop.
+// See: https://github.com/valyala/fasthttp/issues/965#issuecomment-777268945
+func (c *DefaultCtx) Deadline() (deadline time.Time, ok bool) {
+	return
+}
+
+// Done returns a channel that's closed when work done on behalf of this
+// context should be canceled. Done may return nil if this context can
+// never be canceled. Successive calls to Done return the same value.
+// The close of the Done channel may happen asynchronously,
+// after the cancel function returns.
+//
+// Due to current limitations in how fasthttp works, Done operates as a nop.
+// See: https://github.com/valyala/fasthttp/issues/965#issuecomment-777268945
+func (c *DefaultCtx) Done() <-chan struct{} {
+	return nil
+}
+
 // Cookies are used for getting a cookie value by key.
 // Defaults to the empty string "" if the cookie doesn't exist.
 // If a default value is given, it will return that value if the cookie doesn't exist.
@@ -468,6 +490,18 @@ func (c *DefaultCtx) Download(file string, filename ...string) error {
 	return c.SendFile(file)
 }
 
+// If Done is not yet closed, Err returns nil.
+// If Done is closed, Err returns a non-nil error explaining why:
+// context.DeadlineExceeded if the context's deadline passed,
+// or context.Canceled if the context was canceled for some other reason.
+// After Err returns a non-nil error, successive calls to Err return the same error.
+//
+// Due to current limitations in how fasthttp works, Err operates as a nop.
+// See: https://github.com/valyala/fasthttp/issues/965#issuecomment-777268945
+func (c *DefaultCtx) Err() error {
+	return nil
+}
+
 // Request return the *fasthttp.Request object
 // This allows you to use all fasthttp request methods
 // https://godoc.org/github.com/valyala/fasthttp#Request
@@ -1804,6 +1838,16 @@ func (c *DefaultCtx) Vary(fields ...string) {
 	c.Append(HeaderVary, fields...)
 }
 
+// Value makes it possible to pass any values under keys scoped to the request
+// and therefore available to all following routes that match the request.
+//
+// All the values are removed from ctx after returning from the top
+// RequestHandler. Additionally, Close method is called on each value
+// implementing io.Closer before removing the value from ctx.
+func (c *DefaultCtx) Value(key any) any {
+	return c.fasthttp.UserValue(key)
+}
+
 // Write appends p into response body.
 func (c *DefaultCtx) Write(p []byte) (int, error) {
 	c.fasthttp.Response.AppendBody(p)

ctx_interface_gen.go

@@ -4,10 +4,10 @@ package fiber
 
 import (
 	"bufio"
-	"context"
 	"crypto/tls"
 	"io"
 	"mime/multipart"
+	"time"
 
 	"github.com/valyala/fasthttp"
 )
@@ -49,11 +49,6 @@ type Ctx interface {
 	// RequestCtx returns *fasthttp.RequestCtx that carries a deadline
 	// a cancellation signal, and other values across API boundaries.
 	RequestCtx() *fasthttp.RequestCtx
-	// Context returns a context implementation that was set by
-	// user earlier or returns a non-nil, empty context,if it was not set earlier.
-	Context() context.Context
-	// SetContext sets a context implementation by user.
-	SetContext(ctx context.Context)
 	// Cookie sets a cookie by passing a cookie struct.
 	Cookie(cookie *Cookie)
 	// Cookies are used for getting a cookie value by key.
@@ -62,11 +57,53 @@ type Ctx interface {
 	// The returned value is only valid within the handler. Do not store any references.
 	// Make copies or use the Immutable setting to use the value outside the Handler.
 	Cookies(key string, defaultValue ...string) string
+	// Deadline returns the time when work done on behalf of this context
+	// should be canceled. Deadline returns ok==false when no deadline is
+	// set. Successive calls to Deadline return the same results.
+	Deadline() (deadline time.Time, ok bool)
+	// Done returns a channel that's closed when work done on behalf of this
+	// context should be canceled. Done may return nil if this context can
+	// never be canceled. Successive calls to Done return the same value.
+	// The close of the Done channel may happen asynchronously,
+	// after the cancel function returns.
+	//
+	// WithCancel arranges for Done to be closed when cancel is called;
+	// WithDeadline arranges for Done to be closed when the deadline
+	// expires; WithTimeout arranges for Done to be closed when the timeout
+	// elapses.
+	//
+	// Done is provided for use in select statements:
+	//
+	//  // Stream generates values with DoSomething and sends them to out
+	//  // until DoSomething returns an error or ctx.Done is closed.
+	//  func Stream(ctx context.Context, out chan<- Value) error {
+	//  	for {
+	//  		v, err := DoSomething(ctx)
+	//  		if err != nil {
+	//  			return err
+	//  		}
+	//  		select {
+	//  		case <-ctx.Done():
+	//  			return ctx.Err()
+	//  		case out <- v:
+	//  		}
+	//  	}
+	//  }
+	//
+	// See https://blog.golang.org/pipelines for more examples of how to use
+	// a Done channel for cancellation.
+	Done() <-chan struct{}
 	// Download transfers the file from path as an attachment.
 	// Typically, browsers will prompt the user for download.
 	// By default, the Content-Disposition header filename= parameter is the filepath (this typically appears in the browser dialog).
 	// Override this default with the filename parameter.
 	Download(file string, filename ...string) error
+	// If Done is not yet closed, Err returns nil.
+	// If Done is closed, Err returns a non-nil error explaining why:
+	// DeadlineExceeded if the context's deadline passed,
+	// or Canceled if the context was canceled for some other reason.
+	// After Err returns a non-nil error, successive calls to Err return the same error.
+	Err() error
 	// Request return the *fasthttp.Request object
 	// This allows you to use all fasthttp request methods
 	// https://godoc.org/github.com/valyala/fasthttp#Request
@@ -317,6 +354,13 @@ type Ctx interface {
 	// Vary adds the given header field to the Vary response header.
 	// This will append the header, if not already listed, otherwise leaves it listed in the current location.
 	Vary(fields ...string)
+	// Value makes it possible to pass any values under keys scoped to the request
+	// and therefore available to all following routes that match the request.
+	//
+	// All the values are removed from ctx after returning from the top
+	// RequestHandler. Additionally, Close method is called on each value
+	// implementing io.Closer before removing the value from ctx.
+	Value(key any) any
 	// Write appends p into response body.
 	Write(p []byte) (int, error)
 	// Writef appends f & a into response body writer.

ctx_test.go

@@ -9,7 +9,6 @@ import (
 	"bytes"
 	"compress/gzip"
 	"compress/zlib"
-	"context"
 	"crypto/tls"
 	"embed"
 	"encoding/hex"
@@ -882,76 +881,6 @@ func Test_Ctx_RequestCtx(t *testing.T) {
 	require.Equal(t, "*fasthttp.RequestCtx", fmt.Sprintf("%T", c.RequestCtx()))
 }
 
-// go test -run Test_Ctx_Context
-func Test_Ctx_Context(t *testing.T) {
-	t.Parallel()
-	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{})
-
-	t.Run("Nil_Context", func(t *testing.T) {
-		t.Parallel()
-		ctx := c.Context()
-		require.Equal(t, ctx, context.Background())
-	})
-	t.Run("ValueContext", func(t *testing.T) {
-		t.Parallel()
-		testKey := struct{}{}
-		testValue := "Test Value"
-		ctx := context.WithValue(context.Background(), testKey, testValue) //nolint:staticcheck // not needed for tests
-		require.Equal(t, testValue, ctx.Value(testKey))
-	})
-}
-
-// go test -run Test_Ctx_SetContext
-func Test_Ctx_SetContext(t *testing.T) {
-	t.Parallel()
-	app := New()
-	c := app.AcquireCtx(&fasthttp.RequestCtx{})
-
-	testKey := struct{}{}
-	testValue := "Test Value"
-	ctx := context.WithValue(context.Background(), testKey, testValue) //nolint:staticcheck // not needed for tests
-	c.SetContext(ctx)
-	require.Equal(t, testValue, c.Context().Value(testKey))
-}
-
-// go test -run Test_Ctx_Context_Multiple_Requests
-func Test_Ctx_Context_Multiple_Requests(t *testing.T) {
-	t.Parallel()
-	testKey := struct{}{}
-	testValue := "foobar-value"
-
-	app := New()
-	app.Get("/", func(c Ctx) error {
-		ctx := c.Context()
-
-		if ctx.Value(testKey) != nil {
-			return c.SendStatus(StatusInternalServerError)
-		}
-
-		input := utils.CopyString(Query(c, "input", "NO_VALUE"))
-		ctx = context.WithValue(ctx, testKey, fmt.Sprintf("%s_%s", testValue, input)) //nolint:staticcheck // not needed for tests
-		c.SetContext(ctx)
-
-		return c.Status(StatusOK).SendString(fmt.Sprintf("resp_%s_returned", input))
-	})
-
-	// Consecutive Requests
-	for i := 1; i <= 10; i++ {
-		t.Run(fmt.Sprintf("request_%d", i), func(t *testing.T) {
-			t.Parallel()
-			resp, err := app.Test(httptest.NewRequest(MethodGet, fmt.Sprintf("/?input=%d", i), nil))
-
-			require.NoError(t, err, "Unexpected error from response")
-			require.Equal(t, StatusOK, resp.StatusCode, "context.Context returned from c.Context() is reused")
-
-			b, err := io.ReadAll(resp.Body)
-			require.NoError(t, err, "Unexpected error from reading response body")
-			require.Equal(t, fmt.Sprintf("resp_%d_returned", i), string(b), "response text incorrect")
-		})
-	}
-}
-
 // go test -run Test_Ctx_Cookie
 func Test_Ctx_Cookie(t *testing.T) {
 	t.Parallel()

middleware/keyauth/keyauth.go

@@ -62,8 +62,6 @@ func New(config ...Config) fiber.Handler {
 		if err == nil && valid {
 			// Store in both Locals and Context
 			c.Locals(tokenKey, key)
-			ctx := context.WithValue(c.Context(), tokenKey, key)
-			c.SetContext(ctx)
 			return cfg.SuccessHandler(c)
 		}
 		return cfg.ErrorHandler(c, err)

middleware/keyauth/keyauth_test.go

@@ -544,8 +544,7 @@ func Test_TokenFromContext(t *testing.T) {
 		}))
 		// Verify that TokenFromContext works with context.Context
 		app.Get("/", func(c fiber.Ctx) error {
-			ctx := c.Context()
+			token := TokenFromContext(c)
-			token := TokenFromContext(ctx)
 			return c.SendString(token)
 		})
 

middleware/requestid/requestid.go

@@ -39,10 +39,6 @@ func New(config ...Config) fiber.Handler {
 		// Add the request ID to locals
 		c.Locals(requestIDKey, rid)
 
-		// Add the request ID to UserContext
-		ctx := context.WithValue(c.Context(), requestIDKey, rid)
-		c.SetContext(ctx)
-
 		// Continue stack
 		return c.Next()
 	}

middleware/requestid/requestid_test.go

@@ -73,14 +73,6 @@ func Test_RequestID_FromContext(t *testing.T) {
 				},
 			},
 		},
-		{
-			name: "From context.Context",
-			args: args{
-				inputFunc: func(c fiber.Ctx) any {
-					return c.Context()
-				},
-			},
-		},
 	}
 
 	for _, tt := range tests {

middleware/timeout/timeout.go

@@ -19,12 +19,9 @@ func New(h fiber.Handler, timeout time.Duration, tErrs ...error) fiber.Handler {
 
 		// Create a context with the specified timeout; any operation exceeding
 		// this deadline will be canceled automatically.
-		timeoutContext, cancel := context.WithTimeout(ctx.Context(), timeout)
+		timeoutContext, cancel := context.WithTimeout(ctx, timeout)
 		defer cancel()
 
-		// Replace the default Fiber context with our timeout-bound context.
-		ctx.SetContext(timeoutContext)
-
 		// Run the handler and check for relevant errors.
 		err := runHandler(ctx, h, tErrs)
 

middleware/timeout/timeout_test.go

@@ -41,7 +41,7 @@ func TestTimeout_Success(t *testing.T) {
 	// Our middleware wraps a handler that sleeps for 10ms, well under the 50ms limit.
 	app.Get("/fast", New(func(c fiber.Ctx) error {
 		// Simulate some work
-		if err := sleepWithContext(c.Context(), 10*time.Millisecond, context.DeadlineExceeded); err != nil {
+		if err := sleepWithContext(c, 10*time.Millisecond, context.DeadlineExceeded); err != nil {
 			return err
 		}
 		return c.SendString("OK")
@@ -60,7 +60,7 @@ func TestTimeout_Exceeded(t *testing.T) {
 
 	// This handler sleeps 200ms, exceeding the 100ms limit.
 	app.Get("/slow", New(func(c fiber.Ctx) error {
-		if err := sleepWithContext(c.Context(), 200*time.Millisecond, context.DeadlineExceeded); err != nil {
+		if err := sleepWithContext(c, 200*time.Millisecond, context.DeadlineExceeded); err != nil {
 			return err
 		}
 		return c.SendString("Should never get here")
@@ -81,7 +81,7 @@ func TestTimeout_CustomError(t *testing.T) {
 	app.Get("/custom", New(func(c fiber.Ctx) error {
 		// Sleep might time out, or might return early. If the context is canceled,
 		// we treat errCustomTimeout as a 'timeout-like' condition.
-		if err := sleepWithContext(c.Context(), 200*time.Millisecond, errCustomTimeout); err != nil {
+		if err := sleepWithContext(c, 200*time.Millisecond, errCustomTimeout); err != nil {
 			return fmt.Errorf("wrapped: %w", err)
 		}
 		return c.SendString("Should never get here")