'|':  true,
	'~':  true,
}

func IsTokenRune(r rune) bool {
	return r < utf8.RuneSelf && isTokenTable[byte(r)]
}

// HeaderValuesContainsToken reports whether any string in values
// contains the provided token, ASCII case-insensitively.
func HeaderValuesContainsToken(values []string, token string) bool {
	for _, v := range values {
		if headerValueContainsToken(v, token) {
			return true
		}
	}
	return false

package net

import (
	"cmp"
	"internal/bytealg"
	"internal/itoa"
	"slices"
	_ "unsafe" // for go:linkname

	"golang.org/x/net/dns/dnsmessage"
)

// provided by runtime
//
//go:linkname runtime_rand runtime.rand
func runtime_rand() uint64

func randInt() int {
	return int(uint(runtime_rand()) >> 1) // clear sign bit
}

func randIntn(n int) int {

// Copyright 2009 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 expvar provides a standardized interface to public variables, such
// as operation counters in servers. It exposes these variables via HTTP at
// /debug/vars in JSON format. As of Go 1.22, the /debug/vars request must
// use GET.
//

// 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 ld

// This file provides helper functions for updating/rewriting the UUID
// load command within a Go go binary generated on Darwin using
// external linking. Why is it necessary to update the UUID load
// command? See issue #64947 for more detail, but the short answer is

// IPv4 address inside an IPv6 address at transport layer
// protocols. See RFC 4291, RFC 4038 and RFC 3493.
func supportsIPv4map() bool {
	// Some operating systems provide no support for mapping IPv4
	// addresses to IPv6, and a runtime check is unnecessary.
	switch runtime.GOOS {
	case "dragonfly", "openbsd":
		return false
	}

	ipStackCaps.Once.Do(ipStackCaps.probe)

// Copyright 2023 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 iter provides basic definitions and operations
// related to iteration in Go.
package iter

import (
	"internal/race"
	"runtime"
	"unsafe"
)

// Seq is an iterator over sequences of individual values.

// 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 byteorder provides functions for decoding and encoding
// little and big endian integer types from/to byte slices.
package byteorder

func LeUint16(b []byte) uint16 {
	_ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
	return uint16(b[0]) | uint16(b[1])<<8
}

// Copyright 2018 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 fmtsort provides a general stable ordering mechanism
// for maps, on behalf of the fmt and text/template packages.
// It is not guaranteed to be efficient and works only for types
// that are valid map keys.
package fmtsort

import (
	"cmp"
	"reflect"
	"slices"
)

// Copyright 2016 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 testdeps provides access to dependencies needed by test execution.
//
// This package is imported by the generated main package, which passes
// TestDeps into testing.Main. This allows tests to use packages at run time
// without making those packages direct dependencies of package testing.

// has to pass their own timestamp into those events anyway.
func (t *Trace) DisableTimestamps() {
	t.validTimestamps = false
}

// Generation creates a new trace generation.
//
// This provides more structure than Event to allow for more easily
// creating complex traces that are mostly or completely correct.
func (t *Trace) Generation(gen uint64) *Generation {
	g := &Generation{
		trace:   t,
		gen:     gen,