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crypto/tls: simplify keylog tests.

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Since there's no aspect of key logging that OpenSSL can check for us,
the tests for it might as well just connect to another goroutine as this
is lower-maintainance.

Change-Id: I746d1dbad1b4bbfc8ef6ccf136ee4824dbda021e
Reviewed-on: https://go-review.googlesource.com/30089
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Joonas Kuorilehto <joneskoo@derbian.fi>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Adam Langley 2016-09-30 12:55:25 -07:00 committed by Brad Fitzpatrick
parent 5716364b9c
commit 5b97009ebb
6 changed files with 51 additions and 244 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
common.go
View File

@ -637,15 +637,19 @@ func (c *Config) BuildNameToCertificate() {
}
}
// writeKeyLog logs client random and master secret if logging enabled
// by setting KeyLogWriter.
// writeKeyLog logs client random and master secret if logging was enabled by
// setting c.KeyLogWriter.
func (c *Config) writeKeyLog(clientRandom, masterSecret []byte) error {
if c.KeyLogWriter == nil {
return nil
}
logLine := []byte(fmt.Sprintf("CLIENT_RANDOM %x %x\n", clientRandom, masterSecret))
writerMutex.Lock()
_, err := fmt.Fprintf(c.KeyLogWriter, "CLIENT_RANDOM %x %x\n", clientRandom, masterSecret)
_, err := c.KeyLogWriter.Write(logLine)
writerMutex.Unlock()
return err
}

2
handshake_client.go
View File

@ -523,7 +523,7 @@ func (hs *clientHandshakeState) doFullHandshake() error {
hs.masterSecret = masterFromPreMasterSecret(c.vers, hs.suite, preMasterSecret, hs.hello.random, hs.serverHello.random)
if err := c.config.writeKeyLog(hs.hello.random, hs.masterSecret); err != nil {
c.sendAlert(alertInternalError)
return errors.New("tls: failed to write to key log:" + err.Error())
return errors.New("tls: failed to write to key log: " + err.Error())
}
hs.finishedHash.discardHandshakeBuffer()

76
handshake_client_test.go
View File

@ -728,45 +728,55 @@ func TestLRUClientSessionCache(t *testing.T) {
}
}
func TestHandshakeClientKeyLog(t *testing.T) {
config := testConfig.Clone()
buf := &bytes.Buffer{}
config.KeyLogWriter = buf
func TestKeyLog(t *testing.T) {
var serverBuf, clientBuf bytes.Buffer
// config.Rand is zero reader, so client random is all-0
var zeroRandom = strings.Repeat("0", 64)
clientConfig := testConfig.Clone()
clientConfig.KeyLogWriter = &clientBuf
test := &clientTest{
name: "KeyLogWriter",
command: []string{"openssl", "s_server"},
config: config,
validate: func(state ConnectionState) error {
var format, clientRandom, masterSecret string
if _, err := fmt.Fscanf(buf, "%s %s %s\n", &format, &clientRandom, &masterSecret); err != nil {
return fmt.Errorf("failed to parse KeyLogWriter: " + err.Error())
}
if format != "CLIENT_RANDOM" {
return fmt.Errorf("got key log format %q, wanted CLIENT_RANDOM", format)
}
if clientRandom != zeroRandom {
return fmt.Errorf("got key log client random %q, wanted %q", clientRandom, zeroRandom)
}
serverConfig := testConfig.Clone()
serverConfig.KeyLogWriter = &serverBuf
// Master secret is random from server; check length only
if len(masterSecret) != 96 {
return fmt.Errorf("got wrong length master secret in key log %v, want 96", len(masterSecret))
}
c, s := net.Pipe()
done := make(chan bool)
// buf should contain no more lines
var trailingGarbage string
if _, err := fmt.Fscanln(buf, &trailingGarbage); err == nil {
return fmt.Errorf("expected exactly one key in log, got trailing garbage %q", trailingGarbage)
}
go func() {
defer close(done)
return nil
},
if err := Server(s, serverConfig).Handshake(); err != nil {
t.Errorf("server: %s", err)
return
}
s.Close()
}()
if err := Client(c, clientConfig).Handshake(); err != nil {
t.Fatalf("client: %s", err)
}
runClientTestTLS10(t, test)
c.Close()
<-done
checkKeylogLine := func(side, loggedLine string) {
if len(loggedLine) == 0 {
t.Fatalf("%s: no keylog line was produced", side)
}
const expectedLen = 13 /* "CLIENT_RANDOM" */ +
1 /* space */ +
32*2 /* hex client nonce */ +
1 /* space */ +
48*2 /* hex master secret */ +
1 /* new line */
if len(loggedLine) != expectedLen {
t.Fatalf("%s: keylog line has incorrect length (want %d, got %d): %q", side, expectedLen, len(loggedLine), loggedLine)
}
if !strings.HasPrefix(loggedLine, "CLIENT_RANDOM "+strings.Repeat("0", 64)+" ") {
t.Fatalf("%s: keylog line has incorrect structure or nonce: %q", side, loggedLine)
}
}
checkKeylogLine("client", string(clientBuf.Bytes()))
checkKeylogLine("server", string(serverBuf.Bytes()))
}
func TestHandshakeClientALPNMatch(t *testing.T) {

37
handshake_server_test.go
View File

@ -747,43 +747,6 @@ func TestHandshakeServerECDHEECDSAAES(t *testing.T) {
runServerTestTLS12(t, test)
}
func TestHandshakeServerKeyLog(t *testing.T) {
config := testConfig.Clone()
buf := &bytes.Buffer{}
config.KeyLogWriter = buf
test := &serverTest{
name: "KeyLogWriter",
command: []string{"openssl", "s_client"},
config: config,
validate: func(state ConnectionState) error {
var format, clientRandom, masterSecret string
if _, err := fmt.Fscanf(buf, "%s %s %s\n", &format, &clientRandom, &masterSecret); err != nil {
return fmt.Errorf("failed to parse KeyLogWriter: " + err.Error())
}
if format != "CLIENT_RANDOM" {
return fmt.Errorf("got key log format %q, wanted CLIENT_RANDOM", format)
}
// Both clientRandom and masterSecret are unpredictable in server handshake test
if len(clientRandom) != 64 {
return fmt.Errorf("got wrong length client random in key log %v, wanted 64", len(clientRandom))
}
if len(masterSecret) != 96 {
return fmt.Errorf("got wrong length master secret in key log %v, want 96", len(masterSecret))
}
// buf should contain no more lines
var trailingGarbage string
if _, err := fmt.Fscanln(buf, &trailingGarbage); err == nil {
return fmt.Errorf("expected exactly one key in log, got trailing garbage %q", trailingGarbage)
}
return nil
},
}
runServerTestTLS10(t, test)
}
func TestHandshakeServerALPN(t *testing.T) {
config := testConfig.Clone()
config.NextProtos = []string{"proto1", "proto2"}

82
testdata/Client-TLSv10-KeyLogWriter vendored
View File

@ -1,82 +0,0 @@
>>> Flow 1 (client to server)
00000000 16 03 01 00 8b 01 00 00 87 03 03 00 00 00 00 00 |................|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 28 c0 2f |.............(./|
00000030 c0 2b c0 30 c0 2c c0 27 c0 13 c0 23 c0 09 c0 14 |.+.0.,.'...#....|
00000040 c0 0a 00 9c 00 9d 00 3c 00 2f 00 35 c0 12 00 0a |.......<./.5....|
00000050 00 05 c0 11 c0 07 01 00 00 36 00 05 00 05 01 00 |.........6......|
00000060 00 00 00 00 0a 00 08 00 06 00 17 00 18 00 19 00 |................|
00000070 0b 00 02 01 00 00 0d 00 0e 00 0c 04 01 04 03 05 |................|
00000080 01 05 03 02 01 02 03 ff 01 00 01 00 00 12 00 00 |................|
>>> Flow 2 (server to client)
00000000 16 03 01 00 51 02 00 00 4d 03 01 57 b8 3b cc ec |....Q...M..W.;..|
00000010 06 37 31 e0 76 72 0b 48 40 8f 7a 06 15 1b e2 61 |.71.vr.H@.z....a|
00000020 6e 80 81 64 2d a8 3b d2 07 76 a3 20 93 ee d8 71 |n..d-.;..v. ...q|
00000030 17 8e 8c a3 74 fd 9e 82 f9 01 66 71 fe 6b 6f 1c |....t.....fq.ko.|
00000040 4f 22 2f 50 18 b7 af 56 63 be 52 62 00 2f 00 00 |O"/P...Vc.Rb./..|
00000050 05 ff 01 00 01 00 16 03 01 02 59 0b 00 02 55 00 |..........Y...U.|
00000060 02 52 00 02 4f 30 82 02 4b 30 82 01 b4 a0 03 02 |.R..O0..K0......|
00000070 01 02 02 09 00 e8 f0 9d 3f e2 5b ea a6 30 0d 06 |........?.[..0..|
00000080 09 2a 86 48 86 f7 0d 01 01 0b 05 00 30 1f 31 0b |.*.H........0.1.|
00000090 30 09 06 03 55 04 0a 13 02 47 6f 31 10 30 0e 06 |0...U....Go1.0..|
000000a0 03 55 04 03 13 07 47 6f 20 52 6f 6f 74 30 1e 17 |.U....Go Root0..|
000000b0 0d 31 36 30 31 30 31 30 30 30 30 30 30 5a 17 0d |.160101000000Z..|
000000c0 32 35 30 31 30 31 30 30 30 30 30 30 5a 30 1a 31 |250101000000Z0.1|
000000d0 0b 30 09 06 03 55 04 0a 13 02 47 6f 31 0b 30 09 |.0...U....Go1.0.|
000000e0 06 03 55 04 03 13 02 47 6f 30 81 9f 30 0d 06 09 |..U....Go0..0...|
000000f0 2a 86 48 86 f7 0d 01 01 01 05 00 03 81 8d 00 30 |*.H............0|
00000100 81 89 02 81 81 00 db 46 7d 93 2e 12 27 06 48 bc |.......F}...'.H.|
00000110 06 28 21 ab 7e c4 b6 a2 5d fe 1e 52 45 88 7a 36 |.(!.~...]..RE.z6|
00000120 47 a5 08 0d 92 42 5b c2 81 c0 be 97 79 98 40 fb |G....B[.....y.@.|
00000130 4f 6d 14 fd 2b 13 8b c2 a5 2e 67 d8 d4 09 9e d6 |Om..+.....g.....|
00000140 22 38 b7 4a 0b 74 73 2b c2 34 f1 d1 93 e5 96 d9 |"8.J.ts+.4......|
00000150 74 7b f3 58 9f 6c 61 3c c0 b0 41 d4 d9 2b 2b 24 |t{.X.la<..A..++$|
00000160 23 77 5b 1c 3b bd 75 5d ce 20 54 cf a1 63 87 1d |#w[.;.u]. T..c..|
00000170 1e 24 c4 f3 1d 1a 50 8b aa b6 14 43 ed 97 a7 75 |.$....P....C...u|
00000180 62 f4 14 c8 52 d7 02 03 01 00 01 a3 81 93 30 81 |b...R.........0.|
00000190 90 30 0e 06 03 55 1d 0f 01 01 ff 04 04 03 02 05 |.0...U..........|
000001a0 a0 30 1d 06 03 55 1d 25 04 16 30 14 06 08 2b 06 |.0...U.%..0...+.|
000001b0 01 05 05 07 03 01 06 08 2b 06 01 05 05 07 03 02 |........+.......|
000001c0 30 0c 06 03 55 1d 13 01 01 ff 04 02 30 00 30 19 |0...U.......0.0.|
000001d0 06 03 55 1d 0e 04 12 04 10 9f 91 16 1f 43 43 3e |..U..........CC>|
000001e0 49 a6 de 6d b6 80 d7 9f 60 30 1b 06 03 55 1d 23 |I..m....`0...U.#|
000001f0 04 14 30 12 80 10 48 13 49 4d 13 7e 16 31 bb a3 |..0...H.IM.~.1..|
00000200 01 d5 ac ab 6e 7b 30 19 06 03 55 1d 11 04 12 30 |....n{0...U....0|
00000210 10 82 0e 65 78 61 6d 70 6c 65 2e 67 6f 6c 61 6e |...example.golan|
00000220 67 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 |g0...*.H........|
00000230 03 81 81 00 9d 30 cc 40 2b 5b 50 a0 61 cb ba e5 |.....0.@+[P.a...|
00000240 53 58 e1 ed 83 28 a9 58 1a a9 38 a4 95 a1 ac 31 |SX...(.X..8....1|
00000250 5a 1a 84 66 3d 43 d3 2d d9 0b f2 97 df d3 20 64 |Z..f=C.-...... d|
00000260 38 92 24 3a 00 bc cf 9c 7d b7 40 20 01 5f aa d3 |8.$:....}.@ ._..|
00000270 16 61 09 a2 76 fd 13 c3 cc e1 0c 5c ee b1 87 82 |.a..v......\....|
00000280 f1 6c 04 ed 73 bb b3 43 77 8d 0c 1c f1 0f a1 d8 |.l..s..Cw.......|
00000290 40 83 61 c9 4c 72 2b 9d ae db 46 06 06 4d f4 c1 |@.a.Lr+...F..M..|
000002a0 b3 3e c0 d1 bd 42 d4 db fe 3d 13 60 84 5c 21 d3 |.>...B...=.`.\!.|
000002b0 3b e9 fa e7 16 03 01 00 04 0e 00 00 00 |;............|
>>> Flow 3 (client to server)
00000000 16 03 01 00 86 10 00 00 82 00 80 b9 65 8d bf a7 |............e...|
00000010 c8 4b 79 ce 6f cb 8b 13 1c ac b9 7d 66 5e e9 ba |.Ky.o......}f^..|
00000020 1d 71 4e a9 e9 34 ae f6 64 65 90 3b d8 16 52 a2 |.qN..4..de.;..R.|
00000030 6f f4 cb 8a 13 74 a2 ee b7 27 69 b4 41 c0 90 68 |o....t...'i.A..h|
00000040 bc 02 69 e1 c6 48 4f 39 36 30 25 ca 4c 17 ce 83 |..i..HO960%.L...|
00000050 9e 08 56 e3 05 49 93 9e 2e c4 fb e6 c8 01 f1 0f |..V..I..........|
00000060 c5 70 0f 08 83 48 e9 48 ef 6e 50 8b 05 7e e5 84 |.p...H.H.nP..~..|
00000070 25 fa 55 c7 ae 31 02 27 00 ef 3f 98 86 20 12 89 |%.U..1.'..?.. ..|
00000080 91 59 28 b4 f7 d7 af d2 69 61 35 14 03 01 00 01 |.Y(.....ia5.....|
00000090 01 16 03 01 00 30 1d 92 fd 37 c1 b0 b9 f3 cf c4 |.....0...7......|
000000a0 56 72 cf df 2e 24 3f 87 77 5d fa 10 08 81 e8 af |Vr...$?.w]......|
000000b0 f3 f1 67 4c ae 73 0f 0f fa 16 df 37 1f 8a 96 f2 |..gL.s.....7....|
000000c0 b5 30 9d ca 5a 56 |.0..ZV|
>>> Flow 4 (server to client)
00000000 14 03 01 00 01 01 16 03 01 00 30 ad 53 97 4c cb |..........0.S.L.|
00000010 0f 87 69 5f d3 26 90 f1 76 a3 68 41 0a 3a 53 06 |..i_.&..v.hA.:S.|
00000020 1c ae b0 2a 60 fd 2c 67 1a b2 02 f8 96 99 cf bf |...*`.,g........|
00000030 05 b0 ef 86 30 04 ea 30 79 5c fc |....0..0y\.|
>>> Flow 5 (client to server)
00000000 17 03 01 00 20 66 62 1a 6e ed 6d 90 3e 99 a2 1b |.... fb.n.m.>...|
00000010 40 cd 8e 32 91 1e 92 00 28 0b 13 32 74 a1 d6 66 |@..2....(..2t..f|
00000020 88 93 a5 69 22 17 03 01 00 20 a4 4e 90 dd 00 9a |...i".... .N....|
00000030 df 03 07 6f ef 26 97 0f 3f 6a 51 c8 89 29 26 95 |...o.&..?jQ..)&.|
00000040 1b c4 8e 70 e5 ba fc 12 40 8c 15 03 01 00 20 ce |...p....@..... .|
00000050 a5 16 1a e2 e6 3a 1f a3 4f fe fe 69 73 c4 dd 07 |.....:..O..is...|
00000060 65 03 99 20 0f ef 79 eb 43 7f df a8 30 03 e9 |e.. ..y.C...0..|

88
testdata/Server-TLSv10-KeyLogWriter vendored
View File

@ -1,88 +0,0 @@
>>> Flow 1 (client to server)
00000000 16 03 01 00 5f 01 00 00 5b 03 01 57 b8 3c c5 75 |...._...[..W.<.u|
00000010 f1 cb 38 e5 78 fd 82 44 ba bf 25 55 88 e9 0a 2a |..8.x..D..%U...*|
00000020 b2 69 8a b6 c9 75 20 30 14 82 99 00 00 2e 00 39 |.i...u 0.......9|
00000030 00 38 00 35 00 16 00 13 00 0a 00 33 00 32 00 2f |.8.5.......3.2./|
00000040 00 9a 00 99 00 96 00 05 00 04 00 15 00 12 00 09 |................|
00000050 00 14 00 11 00 08 00 06 00 03 00 ff 01 00 00 04 |................|
00000060 00 23 00 00 |.#..|
>>> Flow 2 (server to client)
00000000 16 03 01 00 35 02 00 00 31 03 01 00 00 00 00 00 |....5...1.......|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 35 00 00 |.............5..|
00000030 09 00 23 00 00 ff 01 00 01 00 16 03 01 02 59 0b |..#...........Y.|
00000040 00 02 55 00 02 52 00 02 4f 30 82 02 4b 30 82 01 |..U..R..O0..K0..|
00000050 b4 a0 03 02 01 02 02 09 00 e8 f0 9d 3f e2 5b ea |............?.[.|
00000060 a6 30 0d 06 09 2a 86 48 86 f7 0d 01 01 0b 05 00 |.0...*.H........|
00000070 30 1f 31 0b 30 09 06 03 55 04 0a 13 02 47 6f 31 |0.1.0...U....Go1|
00000080 10 30 0e 06 03 55 04 03 13 07 47 6f 20 52 6f 6f |.0...U....Go Roo|
00000090 74 30 1e 17 0d 31 36 30 31 30 31 30 30 30 30 30 |t0...16010100000|
000000a0 30 5a 17 0d 32 35 30 31 30 31 30 30 30 30 30 30 |0Z..250101000000|
000000b0 5a 30 1a 31 0b 30 09 06 03 55 04 0a 13 02 47 6f |Z0.1.0...U....Go|
000000c0 31 0b 30 09 06 03 55 04 03 13 02 47 6f 30 81 9f |1.0...U....Go0..|
000000d0 30 0d 06 09 2a 86 48 86 f7 0d 01 01 01 05 00 03 |0...*.H.........|
000000e0 81 8d 00 30 81 89 02 81 81 00 db 46 7d 93 2e 12 |...0.......F}...|
000000f0 27 06 48 bc 06 28 21 ab 7e c4 b6 a2 5d fe 1e 52 |'.H..(!.~...]..R|
00000100 45 88 7a 36 47 a5 08 0d 92 42 5b c2 81 c0 be 97 |E.z6G....B[.....|
00000110 79 98 40 fb 4f 6d 14 fd 2b 13 8b c2 a5 2e 67 d8 |y.@.Om..+.....g.|
00000120 d4 09 9e d6 22 38 b7 4a 0b 74 73 2b c2 34 f1 d1 |...."8.J.ts+.4..|
00000130 93 e5 96 d9 74 7b f3 58 9f 6c 61 3c c0 b0 41 d4 |....t{.X.la<..A.|
00000140 d9 2b 2b 24 23 77 5b 1c 3b bd 75 5d ce 20 54 cf |.++$#w[.;.u]. T.|
00000150 a1 63 87 1d 1e 24 c4 f3 1d 1a 50 8b aa b6 14 43 |.c...$....P....C|
00000160 ed 97 a7 75 62 f4 14 c8 52 d7 02 03 01 00 01 a3 |...ub...R.......|
00000170 81 93 30 81 90 30 0e 06 03 55 1d 0f 01 01 ff 04 |..0..0...U......|
00000180 04 03 02 05 a0 30 1d 06 03 55 1d 25 04 16 30 14 |.....0...U.%..0.|
00000190 06 08 2b 06 01 05 05 07 03 01 06 08 2b 06 01 05 |..+.........+...|
000001a0 05 07 03 02 30 0c 06 03 55 1d 13 01 01 ff 04 02 |....0...U.......|
000001b0 30 00 30 19 06 03 55 1d 0e 04 12 04 10 9f 91 16 |0.0...U.........|
000001c0 1f 43 43 3e 49 a6 de 6d b6 80 d7 9f 60 30 1b 06 |.CC>I..m....`0..|
000001d0 03 55 1d 23 04 14 30 12 80 10 48 13 49 4d 13 7e |.U.#..0...H.IM.~|
000001e0 16 31 bb a3 01 d5 ac ab 6e 7b 30 19 06 03 55 1d |.1......n{0...U.|
000001f0 11 04 12 30 10 82 0e 65 78 61 6d 70 6c 65 2e 67 |...0...example.g|
00000200 6f 6c 61 6e 67 30 0d 06 09 2a 86 48 86 f7 0d 01 |olang0...*.H....|
00000210 01 0b 05 00 03 81 81 00 9d 30 cc 40 2b 5b 50 a0 |.........0.@+[P.|
00000220 61 cb ba e5 53 58 e1 ed 83 28 a9 58 1a a9 38 a4 |a...SX...(.X..8.|
00000230 95 a1 ac 31 5a 1a 84 66 3d 43 d3 2d d9 0b f2 97 |...1Z..f=C.-....|
00000240 df d3 20 64 38 92 24 3a 00 bc cf 9c 7d b7 40 20 |.. d8.$:....}.@ |
00000250 01 5f aa d3 16 61 09 a2 76 fd 13 c3 cc e1 0c 5c |._...a..v......\|
00000260 ee b1 87 82 f1 6c 04 ed 73 bb b3 43 77 8d 0c 1c |.....l..s..Cw...|
00000270 f1 0f a1 d8 40 83 61 c9 4c 72 2b 9d ae db 46 06 |....@.a.Lr+...F.|
00000280 06 4d f4 c1 b3 3e c0 d1 bd 42 d4 db fe 3d 13 60 |.M...>...B...=.`|
00000290 84 5c 21 d3 3b e9 fa e7 16 03 01 00 04 0e 00 00 |.\!.;...........|
000002a0 00 |.|
>>> Flow 3 (client to server)
00000000 16 03 01 00 86 10 00 00 82 00 80 1a 4d 38 1d 19 |............M8..|
00000010 9b a3 df 67 f5 f8 7e 0a 93 1d d4 2a 3d e2 c2 64 |...g..~....*=..d|
00000020 9b bb ec 45 54 e6 2d b1 e0 d7 a2 9a 5a c8 7d fd |...ET.-.....Z.}.|
00000030 6e f0 da 44 e8 71 ca ff 1d 4f dd 7b 95 f3 60 49 |n..D.q...O.{..`I|
00000040 8f 35 45 32 f9 8c fd 3c 65 23 7d a8 e4 e9 09 16 |.5E2...<e#}.....|
00000050 ce bf 17 b0 6d 50 8e 73 06 54 bf e2 10 13 a5 55 |....mP.s.T.....U|
00000060 80 86 26 a3 bc ee 36 59 c5 b4 1e b2 11 c0 d7 3d |..&...6Y.......=|
00000070 33 89 ec 7f 2a 56 ff c3 f7 ed a7 a1 4e 3f 36 1f |3...*V......N?6.|
00000080 1c c2 c2 c3 93 21 a7 67 b2 d2 46 14 03 01 00 01 |.....!.g..F.....|
00000090 01 16 03 01 00 30 9a cd cc de 85 fd a5 f8 12 52 |.....0.........R|
000000a0 02 48 59 b5 2a ec 20 38 c6 ba d9 cc 56 ab 0a 9a |.HY.*. 8....V...|
000000b0 42 67 da 0a cb 79 c5 61 c7 a8 77 45 67 31 a6 9a |Bg...y.a..wEg1..|
000000c0 15 54 1d ef 92 7a |.T...z|
>>> Flow 4 (server to client)
00000000 16 03 01 00 82 04 00 00 7e 00 00 00 00 00 78 50 |........~.....xP|
00000010 46 ad c1 db a8 38 86 7b 2b bb fd d0 c3 42 3e 00 |F....8.{+....B>.|
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 94 |................|
00000030 6d 2c 85 83 61 d2 8a 86 79 fe 6e fd c9 09 56 98 |m,..a...y.n...V.|
00000040 1c 42 38 90 81 cd eb ed 37 3e 90 af 03 fe 47 6e |.B8.....7>....Gn|
00000050 88 1c 9b a1 4e e6 ea 92 09 35 6a 04 11 96 64 cb |....N....5j...d.|
00000060 68 2f 53 6c 7c 33 94 11 0c 0d a4 cc f1 0d 90 d1 |h/Sl|3..........|
00000070 46 96 89 a4 ae 2e 4f 21 25 c1 b0 55 db 34 25 b6 |F.....O!%..U.4%.|
00000080 28 82 8f 91 3c 59 cb 14 03 01 00 01 01 16 03 01 |(...<Y..........|
00000090 00 30 ca 15 85 e6 08 c3 bf 01 22 13 e1 06 d2 1f |.0........".....|
000000a0 b8 ad b4 cd 89 82 64 58 7f d5 41 a4 51 3a 0f fd |......dX..A.Q:..|
000000b0 c6 69 4c d5 28 cc d3 76 cf 88 4f 4e e1 83 cf c6 |.iL.(..v..ON....|
000000c0 ea ee 17 03 01 00 20 ba c9 d8 18 92 e2 e4 ae f0 |...... .........|
000000d0 84 9a 3d fb a7 af c5 04 02 e8 d8 4b e4 44 7a 1b |..=........K.Dz.|
000000e0 95 07 db 9e e7 d6 57 17 03 01 00 30 8e f4 91 eb |......W....0....|
000000f0 d0 90 84 6b 50 88 8d 35 83 d0 67 bb 51 9b 6a dd |...kP..5..g.Q.j.|
00000100 1f 2a 13 ad c6 bd 61 90 07 df c5 76 e2 ac 15 56 |.*....a....v...V|
00000110 47 7f 72 f9 6f 70 6b da 2f 37 14 28 15 03 01 00 |G.r.opk./7.(....|
00000120 20 61 e5 d6 fa 55 ae a5 50 5a fc 67 e5 5a a9 89 | a...U..PZ.g.Z..|
00000130 9b 8c a4 17 01 1c a6 74 29 97 9c 05 a4 d7 d7 d1 |.......t).......|
00000140 e0 |.|