forked from golang/go
/
h2_bundle.go
12060 lines (10911 loc) · 371 KB
/
h2_bundle.go
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//go:build !nethttpomithttp2
// Code generated by golang.org/x/tools/cmd/bundle. DO NOT EDIT.
// $ bundle -o=h2_bundle.go -prefix=http2 -tags=!nethttpomithttp2 golang.org/x/net/http2
// Package http2 implements the HTTP/2 protocol.
//
// This package is low-level and intended to be used directly by very
// few people. Most users will use it indirectly through the automatic
// use by the net/http package (from Go 1.6 and later).
// For use in earlier Go versions see ConfigureServer. (Transport support
// requires Go 1.6 or later)
//
// See https://http2.github.io/ for more information on HTTP/2.
//
// See https://http2.golang.org/ for a test server running this code.
//
// 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 http
import (
"bufio"
"bytes"
"compress/gzip"
"context"
"crypto/rand"
"crypto/tls"
"encoding/binary"
"errors"
"fmt"
"io"
"io/fs"
"log"
"math"
"math/bits"
mathrand "math/rand"
"net"
"net/http"
"net/http/httptrace"
"net/textproto"
"net/url"
"os"
"reflect"
"runtime"
"sort"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"golang.org/x/net/http/httpguts"
"golang.org/x/net/http2/hpack"
"golang.org/x/net/idna"
)
// The HTTP protocols are defined in terms of ASCII, not Unicode. This file
// contains helper functions which may use Unicode-aware functions which would
// otherwise be unsafe and could introduce vulnerabilities if used improperly.
// asciiEqualFold is strings.EqualFold, ASCII only. It reports whether s and t
// are equal, ASCII-case-insensitively.
func http2asciiEqualFold(s, t string) bool {
if len(s) != len(t) {
return false
}
for i := 0; i < len(s); i++ {
if http2lower(s[i]) != http2lower(t[i]) {
return false
}
}
return true
}
// lower returns the ASCII lowercase version of b.
func http2lower(b byte) byte {
if 'A' <= b && b <= 'Z' {
return b + ('a' - 'A')
}
return b
}
// isASCIIPrint returns whether s is ASCII and printable according to
// https://tools.ietf.org/html/rfc20#section-4.2.
func http2isASCIIPrint(s string) bool {
for i := 0; i < len(s); i++ {
if s[i] < ' ' || s[i] > '~' {
return false
}
}
return true
}
// asciiToLower returns the lowercase version of s if s is ASCII and printable,
// and whether or not it was.
func http2asciiToLower(s string) (lower string, ok bool) {
if !http2isASCIIPrint(s) {
return "", false
}
return strings.ToLower(s), true
}
// A list of the possible cipher suite ids. Taken from
// https://www.iana.org/assignments/tls-parameters/tls-parameters.txt
const (
http2cipher_TLS_NULL_WITH_NULL_NULL uint16 = 0x0000
http2cipher_TLS_RSA_WITH_NULL_MD5 uint16 = 0x0001
http2cipher_TLS_RSA_WITH_NULL_SHA uint16 = 0x0002
http2cipher_TLS_RSA_EXPORT_WITH_RC4_40_MD5 uint16 = 0x0003
http2cipher_TLS_RSA_WITH_RC4_128_MD5 uint16 = 0x0004
http2cipher_TLS_RSA_WITH_RC4_128_SHA uint16 = 0x0005
http2cipher_TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 uint16 = 0x0006
http2cipher_TLS_RSA_WITH_IDEA_CBC_SHA uint16 = 0x0007
http2cipher_TLS_RSA_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x0008
http2cipher_TLS_RSA_WITH_DES_CBC_SHA uint16 = 0x0009
http2cipher_TLS_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0x000A
http2cipher_TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x000B
http2cipher_TLS_DH_DSS_WITH_DES_CBC_SHA uint16 = 0x000C
http2cipher_TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA uint16 = 0x000D
http2cipher_TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x000E
http2cipher_TLS_DH_RSA_WITH_DES_CBC_SHA uint16 = 0x000F
http2cipher_TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0x0010
http2cipher_TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x0011
http2cipher_TLS_DHE_DSS_WITH_DES_CBC_SHA uint16 = 0x0012
http2cipher_TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA uint16 = 0x0013
http2cipher_TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x0014
http2cipher_TLS_DHE_RSA_WITH_DES_CBC_SHA uint16 = 0x0015
http2cipher_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0x0016
http2cipher_TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 uint16 = 0x0017
http2cipher_TLS_DH_anon_WITH_RC4_128_MD5 uint16 = 0x0018
http2cipher_TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA uint16 = 0x0019
http2cipher_TLS_DH_anon_WITH_DES_CBC_SHA uint16 = 0x001A
http2cipher_TLS_DH_anon_WITH_3DES_EDE_CBC_SHA uint16 = 0x001B
// Reserved uint16 = 0x001C-1D
http2cipher_TLS_KRB5_WITH_DES_CBC_SHA uint16 = 0x001E
http2cipher_TLS_KRB5_WITH_3DES_EDE_CBC_SHA uint16 = 0x001F
http2cipher_TLS_KRB5_WITH_RC4_128_SHA uint16 = 0x0020
http2cipher_TLS_KRB5_WITH_IDEA_CBC_SHA uint16 = 0x0021
http2cipher_TLS_KRB5_WITH_DES_CBC_MD5 uint16 = 0x0022
http2cipher_TLS_KRB5_WITH_3DES_EDE_CBC_MD5 uint16 = 0x0023
http2cipher_TLS_KRB5_WITH_RC4_128_MD5 uint16 = 0x0024
http2cipher_TLS_KRB5_WITH_IDEA_CBC_MD5 uint16 = 0x0025
http2cipher_TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA uint16 = 0x0026
http2cipher_TLS_KRB5_EXPORT_WITH_RC2_CBC_40_SHA uint16 = 0x0027
http2cipher_TLS_KRB5_EXPORT_WITH_RC4_40_SHA uint16 = 0x0028
http2cipher_TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5 uint16 = 0x0029
http2cipher_TLS_KRB5_EXPORT_WITH_RC2_CBC_40_MD5 uint16 = 0x002A
http2cipher_TLS_KRB5_EXPORT_WITH_RC4_40_MD5 uint16 = 0x002B
http2cipher_TLS_PSK_WITH_NULL_SHA uint16 = 0x002C
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA uint16 = 0x002D
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA uint16 = 0x002E
http2cipher_TLS_RSA_WITH_AES_128_CBC_SHA uint16 = 0x002F
http2cipher_TLS_DH_DSS_WITH_AES_128_CBC_SHA uint16 = 0x0030
http2cipher_TLS_DH_RSA_WITH_AES_128_CBC_SHA uint16 = 0x0031
http2cipher_TLS_DHE_DSS_WITH_AES_128_CBC_SHA uint16 = 0x0032
http2cipher_TLS_DHE_RSA_WITH_AES_128_CBC_SHA uint16 = 0x0033
http2cipher_TLS_DH_anon_WITH_AES_128_CBC_SHA uint16 = 0x0034
http2cipher_TLS_RSA_WITH_AES_256_CBC_SHA uint16 = 0x0035
http2cipher_TLS_DH_DSS_WITH_AES_256_CBC_SHA uint16 = 0x0036
http2cipher_TLS_DH_RSA_WITH_AES_256_CBC_SHA uint16 = 0x0037
http2cipher_TLS_DHE_DSS_WITH_AES_256_CBC_SHA uint16 = 0x0038
http2cipher_TLS_DHE_RSA_WITH_AES_256_CBC_SHA uint16 = 0x0039
http2cipher_TLS_DH_anon_WITH_AES_256_CBC_SHA uint16 = 0x003A
http2cipher_TLS_RSA_WITH_NULL_SHA256 uint16 = 0x003B
http2cipher_TLS_RSA_WITH_AES_128_CBC_SHA256 uint16 = 0x003C
http2cipher_TLS_RSA_WITH_AES_256_CBC_SHA256 uint16 = 0x003D
http2cipher_TLS_DH_DSS_WITH_AES_128_CBC_SHA256 uint16 = 0x003E
http2cipher_TLS_DH_RSA_WITH_AES_128_CBC_SHA256 uint16 = 0x003F
http2cipher_TLS_DHE_DSS_WITH_AES_128_CBC_SHA256 uint16 = 0x0040
http2cipher_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0041
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0042
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0043
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0044
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0045
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA uint16 = 0x0046
// Reserved uint16 = 0x0047-4F
// Reserved uint16 = 0x0050-58
// Reserved uint16 = 0x0059-5C
// Unassigned uint16 = 0x005D-5F
// Reserved uint16 = 0x0060-66
http2cipher_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 uint16 = 0x0067
http2cipher_TLS_DH_DSS_WITH_AES_256_CBC_SHA256 uint16 = 0x0068
http2cipher_TLS_DH_RSA_WITH_AES_256_CBC_SHA256 uint16 = 0x0069
http2cipher_TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 uint16 = 0x006A
http2cipher_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 uint16 = 0x006B
http2cipher_TLS_DH_anon_WITH_AES_128_CBC_SHA256 uint16 = 0x006C
http2cipher_TLS_DH_anon_WITH_AES_256_CBC_SHA256 uint16 = 0x006D
// Unassigned uint16 = 0x006E-83
http2cipher_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0084
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0085
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0086
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0087
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0088
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA uint16 = 0x0089
http2cipher_TLS_PSK_WITH_RC4_128_SHA uint16 = 0x008A
http2cipher_TLS_PSK_WITH_3DES_EDE_CBC_SHA uint16 = 0x008B
http2cipher_TLS_PSK_WITH_AES_128_CBC_SHA uint16 = 0x008C
http2cipher_TLS_PSK_WITH_AES_256_CBC_SHA uint16 = 0x008D
http2cipher_TLS_DHE_PSK_WITH_RC4_128_SHA uint16 = 0x008E
http2cipher_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA uint16 = 0x008F
http2cipher_TLS_DHE_PSK_WITH_AES_128_CBC_SHA uint16 = 0x0090
http2cipher_TLS_DHE_PSK_WITH_AES_256_CBC_SHA uint16 = 0x0091
http2cipher_TLS_RSA_PSK_WITH_RC4_128_SHA uint16 = 0x0092
http2cipher_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA uint16 = 0x0093
http2cipher_TLS_RSA_PSK_WITH_AES_128_CBC_SHA uint16 = 0x0094
http2cipher_TLS_RSA_PSK_WITH_AES_256_CBC_SHA uint16 = 0x0095
http2cipher_TLS_RSA_WITH_SEED_CBC_SHA uint16 = 0x0096
http2cipher_TLS_DH_DSS_WITH_SEED_CBC_SHA uint16 = 0x0097
http2cipher_TLS_DH_RSA_WITH_SEED_CBC_SHA uint16 = 0x0098
http2cipher_TLS_DHE_DSS_WITH_SEED_CBC_SHA uint16 = 0x0099
http2cipher_TLS_DHE_RSA_WITH_SEED_CBC_SHA uint16 = 0x009A
http2cipher_TLS_DH_anon_WITH_SEED_CBC_SHA uint16 = 0x009B
http2cipher_TLS_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0x009C
http2cipher_TLS_RSA_WITH_AES_256_GCM_SHA384 uint16 = 0x009D
http2cipher_TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0x009E
http2cipher_TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 uint16 = 0x009F
http2cipher_TLS_DH_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0x00A0
http2cipher_TLS_DH_RSA_WITH_AES_256_GCM_SHA384 uint16 = 0x00A1
http2cipher_TLS_DHE_DSS_WITH_AES_128_GCM_SHA256 uint16 = 0x00A2
http2cipher_TLS_DHE_DSS_WITH_AES_256_GCM_SHA384 uint16 = 0x00A3
http2cipher_TLS_DH_DSS_WITH_AES_128_GCM_SHA256 uint16 = 0x00A4
http2cipher_TLS_DH_DSS_WITH_AES_256_GCM_SHA384 uint16 = 0x00A5
http2cipher_TLS_DH_anon_WITH_AES_128_GCM_SHA256 uint16 = 0x00A6
http2cipher_TLS_DH_anon_WITH_AES_256_GCM_SHA384 uint16 = 0x00A7
http2cipher_TLS_PSK_WITH_AES_128_GCM_SHA256 uint16 = 0x00A8
http2cipher_TLS_PSK_WITH_AES_256_GCM_SHA384 uint16 = 0x00A9
http2cipher_TLS_DHE_PSK_WITH_AES_128_GCM_SHA256 uint16 = 0x00AA
http2cipher_TLS_DHE_PSK_WITH_AES_256_GCM_SHA384 uint16 = 0x00AB
http2cipher_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256 uint16 = 0x00AC
http2cipher_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384 uint16 = 0x00AD
http2cipher_TLS_PSK_WITH_AES_128_CBC_SHA256 uint16 = 0x00AE
http2cipher_TLS_PSK_WITH_AES_256_CBC_SHA384 uint16 = 0x00AF
http2cipher_TLS_PSK_WITH_NULL_SHA256 uint16 = 0x00B0
http2cipher_TLS_PSK_WITH_NULL_SHA384 uint16 = 0x00B1
http2cipher_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256 uint16 = 0x00B2
http2cipher_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384 uint16 = 0x00B3
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA256 uint16 = 0x00B4
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA384 uint16 = 0x00B5
http2cipher_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256 uint16 = 0x00B6
http2cipher_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384 uint16 = 0x00B7
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA256 uint16 = 0x00B8
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA384 uint16 = 0x00B9
http2cipher_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BA
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BB
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BC
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BD
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BE
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0x00BF
http2cipher_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C0
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C1
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C2
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C3
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C4
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256 uint16 = 0x00C5
// Unassigned uint16 = 0x00C6-FE
http2cipher_TLS_EMPTY_RENEGOTIATION_INFO_SCSV uint16 = 0x00FF
// Unassigned uint16 = 0x01-55,*
http2cipher_TLS_FALLBACK_SCSV uint16 = 0x5600
// Unassigned uint16 = 0x5601 - 0xC000
http2cipher_TLS_ECDH_ECDSA_WITH_NULL_SHA uint16 = 0xC001
http2cipher_TLS_ECDH_ECDSA_WITH_RC4_128_SHA uint16 = 0xC002
http2cipher_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC003
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA uint16 = 0xC004
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA uint16 = 0xC005
http2cipher_TLS_ECDHE_ECDSA_WITH_NULL_SHA uint16 = 0xC006
http2cipher_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA uint16 = 0xC007
http2cipher_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC008
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA uint16 = 0xC009
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA uint16 = 0xC00A
http2cipher_TLS_ECDH_RSA_WITH_NULL_SHA uint16 = 0xC00B
http2cipher_TLS_ECDH_RSA_WITH_RC4_128_SHA uint16 = 0xC00C
http2cipher_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC00D
http2cipher_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA uint16 = 0xC00E
http2cipher_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA uint16 = 0xC00F
http2cipher_TLS_ECDHE_RSA_WITH_NULL_SHA uint16 = 0xC010
http2cipher_TLS_ECDHE_RSA_WITH_RC4_128_SHA uint16 = 0xC011
http2cipher_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC012
http2cipher_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA uint16 = 0xC013
http2cipher_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA uint16 = 0xC014
http2cipher_TLS_ECDH_anon_WITH_NULL_SHA uint16 = 0xC015
http2cipher_TLS_ECDH_anon_WITH_RC4_128_SHA uint16 = 0xC016
http2cipher_TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA uint16 = 0xC017
http2cipher_TLS_ECDH_anon_WITH_AES_128_CBC_SHA uint16 = 0xC018
http2cipher_TLS_ECDH_anon_WITH_AES_256_CBC_SHA uint16 = 0xC019
http2cipher_TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC01A
http2cipher_TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA uint16 = 0xC01B
http2cipher_TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA uint16 = 0xC01C
http2cipher_TLS_SRP_SHA_WITH_AES_128_CBC_SHA uint16 = 0xC01D
http2cipher_TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA uint16 = 0xC01E
http2cipher_TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA uint16 = 0xC01F
http2cipher_TLS_SRP_SHA_WITH_AES_256_CBC_SHA uint16 = 0xC020
http2cipher_TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA uint16 = 0xC021
http2cipher_TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA uint16 = 0xC022
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 uint16 = 0xC023
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 uint16 = 0xC024
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256 uint16 = 0xC025
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384 uint16 = 0xC026
http2cipher_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 uint16 = 0xC027
http2cipher_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 uint16 = 0xC028
http2cipher_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256 uint16 = 0xC029
http2cipher_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384 uint16 = 0xC02A
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 uint16 = 0xC02B
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 uint16 = 0xC02C
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256 uint16 = 0xC02D
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384 uint16 = 0xC02E
http2cipher_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0xC02F
http2cipher_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 uint16 = 0xC030
http2cipher_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256 uint16 = 0xC031
http2cipher_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384 uint16 = 0xC032
http2cipher_TLS_ECDHE_PSK_WITH_RC4_128_SHA uint16 = 0xC033
http2cipher_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA uint16 = 0xC034
http2cipher_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA uint16 = 0xC035
http2cipher_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA uint16 = 0xC036
http2cipher_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256 uint16 = 0xC037
http2cipher_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384 uint16 = 0xC038
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA uint16 = 0xC039
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA256 uint16 = 0xC03A
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA384 uint16 = 0xC03B
http2cipher_TLS_RSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC03C
http2cipher_TLS_RSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC03D
http2cipher_TLS_DH_DSS_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC03E
http2cipher_TLS_DH_DSS_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC03F
http2cipher_TLS_DH_RSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC040
http2cipher_TLS_DH_RSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC041
http2cipher_TLS_DHE_DSS_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC042
http2cipher_TLS_DHE_DSS_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC043
http2cipher_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC044
http2cipher_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC045
http2cipher_TLS_DH_anon_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC046
http2cipher_TLS_DH_anon_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC047
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC048
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC049
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC04A
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC04B
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC04C
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC04D
http2cipher_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC04E
http2cipher_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC04F
http2cipher_TLS_RSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC050
http2cipher_TLS_RSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC051
http2cipher_TLS_DHE_RSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC052
http2cipher_TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC053
http2cipher_TLS_DH_RSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC054
http2cipher_TLS_DH_RSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC055
http2cipher_TLS_DHE_DSS_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC056
http2cipher_TLS_DHE_DSS_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC057
http2cipher_TLS_DH_DSS_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC058
http2cipher_TLS_DH_DSS_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC059
http2cipher_TLS_DH_anon_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC05A
http2cipher_TLS_DH_anon_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC05B
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC05C
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC05D
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC05E
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC05F
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC060
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC061
http2cipher_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC062
http2cipher_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC063
http2cipher_TLS_PSK_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC064
http2cipher_TLS_PSK_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC065
http2cipher_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC066
http2cipher_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC067
http2cipher_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC068
http2cipher_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC069
http2cipher_TLS_PSK_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC06A
http2cipher_TLS_PSK_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC06B
http2cipher_TLS_DHE_PSK_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC06C
http2cipher_TLS_DHE_PSK_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC06D
http2cipher_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256 uint16 = 0xC06E
http2cipher_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384 uint16 = 0xC06F
http2cipher_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256 uint16 = 0xC070
http2cipher_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384 uint16 = 0xC071
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC072
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC073
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC074
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC075
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC076
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC077
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC078
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC079
http2cipher_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC07A
http2cipher_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC07B
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC07C
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC07D
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC07E
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC07F
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC080
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC081
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC082
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC083
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC084
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC085
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC086
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC087
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC088
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC089
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC08A
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC08B
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC08C
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC08D
http2cipher_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC08E
http2cipher_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC08F
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC090
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC091
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256 uint16 = 0xC092
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384 uint16 = 0xC093
http2cipher_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC094
http2cipher_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC095
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC096
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC097
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC098
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC099
http2cipher_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256 uint16 = 0xC09A
http2cipher_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384 uint16 = 0xC09B
http2cipher_TLS_RSA_WITH_AES_128_CCM uint16 = 0xC09C
http2cipher_TLS_RSA_WITH_AES_256_CCM uint16 = 0xC09D
http2cipher_TLS_DHE_RSA_WITH_AES_128_CCM uint16 = 0xC09E
http2cipher_TLS_DHE_RSA_WITH_AES_256_CCM uint16 = 0xC09F
http2cipher_TLS_RSA_WITH_AES_128_CCM_8 uint16 = 0xC0A0
http2cipher_TLS_RSA_WITH_AES_256_CCM_8 uint16 = 0xC0A1
http2cipher_TLS_DHE_RSA_WITH_AES_128_CCM_8 uint16 = 0xC0A2
http2cipher_TLS_DHE_RSA_WITH_AES_256_CCM_8 uint16 = 0xC0A3
http2cipher_TLS_PSK_WITH_AES_128_CCM uint16 = 0xC0A4
http2cipher_TLS_PSK_WITH_AES_256_CCM uint16 = 0xC0A5
http2cipher_TLS_DHE_PSK_WITH_AES_128_CCM uint16 = 0xC0A6
http2cipher_TLS_DHE_PSK_WITH_AES_256_CCM uint16 = 0xC0A7
http2cipher_TLS_PSK_WITH_AES_128_CCM_8 uint16 = 0xC0A8
http2cipher_TLS_PSK_WITH_AES_256_CCM_8 uint16 = 0xC0A9
http2cipher_TLS_PSK_DHE_WITH_AES_128_CCM_8 uint16 = 0xC0AA
http2cipher_TLS_PSK_DHE_WITH_AES_256_CCM_8 uint16 = 0xC0AB
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CCM uint16 = 0xC0AC
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CCM uint16 = 0xC0AD
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8 uint16 = 0xC0AE
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8 uint16 = 0xC0AF
// Unassigned uint16 = 0xC0B0-FF
// Unassigned uint16 = 0xC1-CB,*
// Unassigned uint16 = 0xCC00-A7
http2cipher_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCA8
http2cipher_TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCA9
http2cipher_TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCAA
http2cipher_TLS_PSK_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCAB
http2cipher_TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCAC
http2cipher_TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCAD
http2cipher_TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xCCAE
)
// isBadCipher reports whether the cipher is blacklisted by the HTTP/2 spec.
// References:
// https://tools.ietf.org/html/rfc7540#appendix-A
// Reject cipher suites from Appendix A.
// "This list includes those cipher suites that do not
// offer an ephemeral key exchange and those that are
// based on the TLS null, stream or block cipher type"
func http2isBadCipher(cipher uint16) bool {
switch cipher {
case http2cipher_TLS_NULL_WITH_NULL_NULL,
http2cipher_TLS_RSA_WITH_NULL_MD5,
http2cipher_TLS_RSA_WITH_NULL_SHA,
http2cipher_TLS_RSA_EXPORT_WITH_RC4_40_MD5,
http2cipher_TLS_RSA_WITH_RC4_128_MD5,
http2cipher_TLS_RSA_WITH_RC4_128_SHA,
http2cipher_TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5,
http2cipher_TLS_RSA_WITH_IDEA_CBC_SHA,
http2cipher_TLS_RSA_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_RSA_WITH_DES_CBC_SHA,
http2cipher_TLS_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_DES_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_DES_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_DES_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_DES_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DH_anon_EXPORT_WITH_RC4_40_MD5,
http2cipher_TLS_DH_anon_WITH_RC4_128_MD5,
http2cipher_TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_DES_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_KRB5_WITH_DES_CBC_SHA,
http2cipher_TLS_KRB5_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_KRB5_WITH_RC4_128_SHA,
http2cipher_TLS_KRB5_WITH_IDEA_CBC_SHA,
http2cipher_TLS_KRB5_WITH_DES_CBC_MD5,
http2cipher_TLS_KRB5_WITH_3DES_EDE_CBC_MD5,
http2cipher_TLS_KRB5_WITH_RC4_128_MD5,
http2cipher_TLS_KRB5_WITH_IDEA_CBC_MD5,
http2cipher_TLS_KRB5_EXPORT_WITH_DES_CBC_40_SHA,
http2cipher_TLS_KRB5_EXPORT_WITH_RC2_CBC_40_SHA,
http2cipher_TLS_KRB5_EXPORT_WITH_RC4_40_SHA,
http2cipher_TLS_KRB5_EXPORT_WITH_DES_CBC_40_MD5,
http2cipher_TLS_KRB5_EXPORT_WITH_RC2_CBC_40_MD5,
http2cipher_TLS_KRB5_EXPORT_WITH_RC4_40_MD5,
http2cipher_TLS_PSK_WITH_NULL_SHA,
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA,
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA,
http2cipher_TLS_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_AES_128_CBC_SHA,
http2cipher_TLS_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_AES_256_CBC_SHA,
http2cipher_TLS_RSA_WITH_NULL_SHA256,
http2cipher_TLS_RSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_RSA_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_DH_DSS_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_DH_RSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_DHE_DSS_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_DH_DSS_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_DH_RSA_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_DHE_DSS_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_DH_anon_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_DH_anon_WITH_AES_256_CBC_SHA256,
http2cipher_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA,
http2cipher_TLS_PSK_WITH_RC4_128_SHA,
http2cipher_TLS_PSK_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_PSK_WITH_AES_128_CBC_SHA,
http2cipher_TLS_PSK_WITH_AES_256_CBC_SHA,
http2cipher_TLS_DHE_PSK_WITH_RC4_128_SHA,
http2cipher_TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_DHE_PSK_WITH_AES_128_CBC_SHA,
http2cipher_TLS_DHE_PSK_WITH_AES_256_CBC_SHA,
http2cipher_TLS_RSA_PSK_WITH_RC4_128_SHA,
http2cipher_TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_RSA_PSK_WITH_AES_128_CBC_SHA,
http2cipher_TLS_RSA_PSK_WITH_AES_256_CBC_SHA,
http2cipher_TLS_RSA_WITH_SEED_CBC_SHA,
http2cipher_TLS_DH_DSS_WITH_SEED_CBC_SHA,
http2cipher_TLS_DH_RSA_WITH_SEED_CBC_SHA,
http2cipher_TLS_DHE_DSS_WITH_SEED_CBC_SHA,
http2cipher_TLS_DHE_RSA_WITH_SEED_CBC_SHA,
http2cipher_TLS_DH_anon_WITH_SEED_CBC_SHA,
http2cipher_TLS_RSA_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_RSA_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_DH_RSA_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_DH_RSA_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_DH_DSS_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_DH_DSS_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_DH_anon_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_DH_anon_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_PSK_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_PSK_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_RSA_PSK_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_RSA_PSK_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_PSK_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_PSK_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_PSK_WITH_NULL_SHA256,
http2cipher_TLS_PSK_WITH_NULL_SHA384,
http2cipher_TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_DHE_PSK_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA256,
http2cipher_TLS_DHE_PSK_WITH_NULL_SHA384,
http2cipher_TLS_RSA_PSK_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_RSA_PSK_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA256,
http2cipher_TLS_RSA_PSK_WITH_NULL_SHA384,
http2cipher_TLS_RSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_RSA_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_CBC_SHA256,
http2cipher_TLS_EMPTY_RENEGOTIATION_INFO_SCSV,
http2cipher_TLS_ECDH_ECDSA_WITH_NULL_SHA,
http2cipher_TLS_ECDH_ECDSA_WITH_RC4_128_SHA,
http2cipher_TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_NULL_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDH_RSA_WITH_NULL_SHA,
http2cipher_TLS_ECDH_RSA_WITH_RC4_128_SHA,
http2cipher_TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDHE_RSA_WITH_NULL_SHA,
http2cipher_TLS_ECDHE_RSA_WITH_RC4_128_SHA,
http2cipher_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDH_anon_WITH_NULL_SHA,
http2cipher_TLS_ECDH_anon_WITH_RC4_128_SHA,
http2cipher_TLS_ECDH_anon_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDH_anon_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDH_anon_WITH_AES_256_CBC_SHA,
http2cipher_TLS_SRP_SHA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_SRP_SHA_RSA_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_SRP_SHA_DSS_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_SRP_SHA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_SRP_SHA_RSA_WITH_AES_128_CBC_SHA,
http2cipher_TLS_SRP_SHA_DSS_WITH_AES_128_CBC_SHA,
http2cipher_TLS_SRP_SHA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_SRP_SHA_RSA_WITH_AES_256_CBC_SHA,
http2cipher_TLS_SRP_SHA_DSS_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384,
http2cipher_TLS_ECDHE_PSK_WITH_RC4_128_SHA,
http2cipher_TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA,
http2cipher_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
http2cipher_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA,
http2cipher_TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
http2cipher_TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA,
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA256,
http2cipher_TLS_ECDHE_PSK_WITH_NULL_SHA384,
http2cipher_TLS_RSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_RSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DH_DSS_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DH_DSS_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DH_RSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DH_RSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DHE_DSS_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DHE_DSS_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DHE_RSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DHE_RSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DH_anon_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DH_anon_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_RSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_RSA_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_RSA_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_DH_RSA_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_DH_RSA_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_DH_DSS_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_DH_DSS_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_DH_anon_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_DH_anon_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_PSK_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_PSK_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_DHE_PSK_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_DHE_PSK_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_RSA_PSK_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_RSA_PSK_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_PSK_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_PSK_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_RSA_PSK_WITH_ARIA_128_GCM_SHA256,
http2cipher_TLS_RSA_PSK_WITH_ARIA_256_GCM_SHA384,
http2cipher_TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384,
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_RSA_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_RSA_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_RSA_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_DH_RSA_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_DH_DSS_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_DH_anon_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_ECDH_ECDSA_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_ECDH_RSA_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_128_GCM_SHA256,
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_256_GCM_SHA384,
http2cipher_TLS_PSK_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_RSA_PSK_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_ECDHE_PSK_WITH_CAMELLIA_128_CBC_SHA256,
http2cipher_TLS_ECDHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
http2cipher_TLS_RSA_WITH_AES_128_CCM,
http2cipher_TLS_RSA_WITH_AES_256_CCM,
http2cipher_TLS_RSA_WITH_AES_128_CCM_8,
http2cipher_TLS_RSA_WITH_AES_256_CCM_8,
http2cipher_TLS_PSK_WITH_AES_128_CCM,
http2cipher_TLS_PSK_WITH_AES_256_CCM,
http2cipher_TLS_PSK_WITH_AES_128_CCM_8,
http2cipher_TLS_PSK_WITH_AES_256_CCM_8:
return true
default:
return false
}
}
// ClientConnPool manages a pool of HTTP/2 client connections.
type http2ClientConnPool interface {
// GetClientConn returns a specific HTTP/2 connection (usually
// a TLS-TCP connection) to an HTTP/2 server. On success, the
// returned ClientConn accounts for the upcoming RoundTrip
// call, so the caller should not omit it. If the caller needs
// to, ClientConn.RoundTrip can be called with a bogus
// new(http.Request) to release the stream reservation.
GetClientConn(req *Request, addr string) (*http2ClientConn, error)
MarkDead(*http2ClientConn)
}
// clientConnPoolIdleCloser is the interface implemented by ClientConnPool
// implementations which can close their idle connections.
type http2clientConnPoolIdleCloser interface {
http2ClientConnPool
closeIdleConnections()
}
var (
_ http2clientConnPoolIdleCloser = (*http2clientConnPool)(nil)
_ http2clientConnPoolIdleCloser = http2noDialClientConnPool{}
)
// TODO: use singleflight for dialing and addConnCalls?
type http2clientConnPool struct {
t *http2Transport
mu sync.Mutex // TODO: maybe switch to RWMutex
// TODO: add support for sharing conns based on cert names
// (e.g. share conn for googleapis.com and appspot.com)
conns map[string][]*http2ClientConn // key is host:port
dialing map[string]*http2dialCall // currently in-flight dials
keys map[*http2ClientConn][]string
addConnCalls map[string]*http2addConnCall // in-flight addConnIfNeeded calls
}
func (p *http2clientConnPool) GetClientConn(req *Request, addr string) (*http2ClientConn, error) {
return p.getClientConn(req, addr, http2dialOnMiss)
}
const (
http2dialOnMiss = true
http2noDialOnMiss = false
)
func (p *http2clientConnPool) getClientConn(req *Request, addr string, dialOnMiss bool) (*http2ClientConn, error) {
// TODO(dneil): Dial a new connection when t.DisableKeepAlives is set?
if http2isConnectionCloseRequest(req) && dialOnMiss {
// It gets its own connection.
http2traceGetConn(req, addr)
const singleUse = true
cc, err := p.t.dialClientConn(req.Context(), addr, singleUse)
if err != nil {
return nil, err
}
return cc, nil
}
for {
p.mu.Lock()
for _, cc := range p.conns[addr] {
if cc.ReserveNewRequest() {
// When a connection is presented to us by the net/http package,
// the GetConn hook has already been called.
// Don't call it a second time here.
if !cc.getConnCalled {
http2traceGetConn(req, addr)
}
cc.getConnCalled = false
p.mu.Unlock()
return cc, nil
}
}
if !dialOnMiss {
p.mu.Unlock()
return nil, http2ErrNoCachedConn
}
http2traceGetConn(req, addr)
call := p.getStartDialLocked(req.Context(), addr)
p.mu.Unlock()
<-call.done
if http2shouldRetryDial(call, req) {
continue
}
cc, err := call.res, call.err
if err != nil {
return nil, err
}
if cc.ReserveNewRequest() {
return cc, nil
}
}
}
// dialCall is an in-flight Transport dial call to a host.
type http2dialCall struct {
_ http2incomparable
p *http2clientConnPool
// the context associated with the request
// that created this dialCall
ctx context.Context
done chan struct{} // closed when done
res *http2ClientConn // valid after done is closed
err error // valid after done is closed
}
// requires p.mu is held.
func (p *http2clientConnPool) getStartDialLocked(ctx context.Context, addr string) *http2dialCall {
if call, ok := p.dialing[addr]; ok {
// A dial is already in-flight. Don't start another.
return call
}
call := &http2dialCall{p: p, done: make(chan struct{}), ctx: ctx}
if p.dialing == nil {
p.dialing = make(map[string]*http2dialCall)
}
p.dialing[addr] = call
go call.dial(call.ctx, addr)
return call
}
// run in its own goroutine.
func (c *http2dialCall) dial(ctx context.Context, addr string) {
const singleUse = false // shared conn
c.res, c.err = c.p.t.dialClientConn(ctx, addr, singleUse)
c.p.mu.Lock()
delete(c.p.dialing, addr)
if c.err == nil {
c.p.addConnLocked(addr, c.res)
}
c.p.mu.Unlock()
close(c.done)
}
// addConnIfNeeded makes a NewClientConn out of c if a connection for key doesn't
// already exist. It coalesces concurrent calls with the same key.
// This is used by the http1 Transport code when it creates a new connection. Because
// the http1 Transport doesn't de-dup TCP dials to outbound hosts (because it doesn't know
// the protocol), it can get into a situation where it has multiple TLS connections.
// This code decides which ones live or die.
// The return value used is whether c was used.
// c is never closed.
func (p *http2clientConnPool) addConnIfNeeded(key string, t *http2Transport, c *tls.Conn) (used bool, err error) {
p.mu.Lock()
for _, cc := range p.conns[key] {
if cc.CanTakeNewRequest() {
p.mu.Unlock()
return false, nil
}
}
call, dup := p.addConnCalls[key]
if !dup {
if p.addConnCalls == nil {
p.addConnCalls = make(map[string]*http2addConnCall)
}
call = &http2addConnCall{
p: p,
done: make(chan struct{}),
}
p.addConnCalls[key] = call
go call.run(t, key, c)
}
p.mu.Unlock()
<-call.done
if call.err != nil {
return false, call.err
}
return !dup, nil
}
type http2addConnCall struct {
_ http2incomparable
p *http2clientConnPool
done chan struct{} // closed when done
err error
}
func (c *http2addConnCall) run(t *http2Transport, key string, tc *tls.Conn) {
cc, err := t.NewClientConn(tc)
p := c.p
p.mu.Lock()
if err != nil {
c.err = err
} else {
cc.getConnCalled = true // already called by the net/http package
p.addConnLocked(key, cc)
}
delete(p.addConnCalls, key)
p.mu.Unlock()
close(c.done)
}
// p.mu must be held
func (p *http2clientConnPool) addConnLocked(key string, cc *http2ClientConn) {
for _, v := range p.conns[key] {
if v == cc {
return
}
}
if p.conns == nil {
p.conns = make(map[string][]*http2ClientConn)
}
if p.keys == nil {
p.keys = make(map[*http2ClientConn][]string)
}
p.conns[key] = append(p.conns[key], cc)
p.keys[cc] = append(p.keys[cc], key)
}
func (p *http2clientConnPool) MarkDead(cc *http2ClientConn) {
p.mu.Lock()
defer p.mu.Unlock()
for _, key := range p.keys[cc] {
vv, ok := p.conns[key]
if !ok {
continue
}
newList := http2filterOutClientConn(vv, cc)
if len(newList) > 0 {
p.conns[key] = newList
} else {
delete(p.conns, key)
}
}
delete(p.keys, cc)
}
func (p *http2clientConnPool) closeIdleConnections() {
p.mu.Lock()
defer p.mu.Unlock()
// TODO: don't close a cc if it was just added to the pool
// milliseconds ago and has never been used. There's currently
// a small race window with the HTTP/1 Transport's integration
// where it can add an idle conn just before using it, and
// somebody else can concurrently call CloseIdleConns and
// break some caller's RoundTrip.
for _, vv := range p.conns {
for _, cc := range vv {
cc.closeIfIdle()
}
}
}
func http2filterOutClientConn(in []*http2ClientConn, exclude *http2ClientConn) []*http2ClientConn {
out := in[:0]
for _, v := range in {
if v != exclude {
out = append(out, v)
}
}
// If we filtered it out, zero out the last item to prevent
// the GC from seeing it.
if len(in) != len(out) {
in[len(in)-1] = nil