1 files changed, 95 insertions, 0 deletions
diff --git a/src/vendor/golang.org/x/net/internal/http3/http3.go b/src/vendor/golang.org/x/net/internal/http3/http3.go
new file mode 100644
index 0000000000..189e3e749b
--- /dev/null
+++ b/src/vendor/golang.org/x/net/internal/http3/http3.go
@@ -0,0 +1,95 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package http3
+
+import (
+	"context"
+	"fmt"
+)
+
+// Stream types.
+//
+// For unidirectional streams, the value is the stream type sent over the wire.
+//
+// For bidirectional streams (which are always request streams),
+// the value is arbitrary and never sent on the wire.
+type streamType int64
+
+const (
+	// Bidirectional request stream.
+	// All bidirectional streams are request streams.
+	// This stream type is never sent over the wire.
+	//
+	// https://www.rfc-editor.org/rfc/rfc9114.html#section-6.1
+	streamTypeRequest = streamType(-1)
+
+	// https://www.rfc-editor.org/rfc/rfc9114.html#section-6.2
+	streamTypeControl = streamType(0x00)
+	streamTypePush    = streamType(0x01)
+
+	// https://www.rfc-editor.org/rfc/rfc9204.html#section-4.2
+	streamTypeEncoder = streamType(0x02)
+	streamTypeDecoder = streamType(0x03)
+)
+
+// canceledCtx is a canceled Context.
+// Used for performing non-blocking QUIC operations.
+var canceledCtx = func() context.Context {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+	return ctx
+}()
+
+func (stype streamType) String() string {
+	switch stype {
+	case streamTypeRequest:
+		return "request"
+	case streamTypeControl:
+		return "control"
+	case streamTypePush:
+		return "push"
+	case streamTypeEncoder:
+		return "encoder"
+	case streamTypeDecoder:
+		return "decoder"
+	default:
+		return "unknown"
+	}
+}
+
+// Frame types.
+type frameType int64
+
+const (
+	// https://www.rfc-editor.org/rfc/rfc9114.html#section-7.2
+	frameTypeData        = frameType(0x00)
+	frameTypeHeaders     = frameType(0x01)
+	frameTypeCancelPush  = frameType(0x03)
+	frameTypeSettings    = frameType(0x04)
+	frameTypePushPromise = frameType(0x05)
+	frameTypeGoaway      = frameType(0x07)
+	frameTypeMaxPushID   = frameType(0x0d)
+)
+
+func (ftype frameType) String() string {
+	switch ftype {
+	case frameTypeData:
+		return "DATA"
+	case frameTypeHeaders:
+		return "HEADERS"
+	case frameTypeCancelPush:
+		return "CANCEL_PUSH"
+	case frameTypeSettings:
+		return "SETTINGS"
+	case frameTypePushPromise:
+		return "PUSH_PROMISE"
+	case frameTypeGoaway:
+		return "GOAWAY"
+	case frameTypeMaxPushID:
+		return "MAX_PUSH_ID"
+	default:
+		return fmt.Sprintf("UNKNOWN_%d", int64(ftype))
+	}
+}