go-httpbin - Case 6.2.3 : Pass - 2 ms @ 2025-11-06T11:46:29.383Z
Case Description
Send a valid UTF-8 text message in fragments of 1 octet, resulting in frames ending on positions which are not code point ends.
MESSAGE:
Hello-µ@ßöäüàá-UTF-8!!
48656c6c6f2dc2b540c39fc3b6c3a4c3bcc3a0c3a12d5554462d382121
Case Expectation
The message is echo'ed back to us.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': [('message', u'Hello-\xb5@\xdf\xf6\xe4\xfc\xe0\xe1-UTF-8!!', False)]}
Observed:
[('message', u'Hello-\xb5@\xdf\xf6\xe4\xfc\xe0\xe1-UTF-8!!', False)]
Case Closing Behavior
Connection was properly closed (OK)
GET / HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:43127 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: yHgVFrfGVkHeIWtdO2MYug== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Connection: upgrade Sec-Websocket-Accept: Hj/DfRizITAanzUKW9lu1GkDzFc= Upgrade: websocket Date: Thu, 06 Nov 2025 11:46:29 GMT
| Key | Value | Description |
| isServer | False | True, iff I (the fuzzer) am a server, and the peer is a client. |
| closedByMe | True | True, iff I have initiated closing handshake (that is, did send close first). |
| failedByMe | False | True, iff I have failed the WS connection (i.e. due to protocol error). Failing can be either by initiating closing handshake or brutal drop TCP. |
| droppedByMe | False | True, iff I dropped the TCP connection. |
| wasClean | True | True, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility). |
| wasNotCleanReason | None | When wasClean == False, the reason what happened. |
| wasServerConnectionDropTimeout | False | When we are a client, and we expected the server to drop the TCP, but that didn't happen in time, this gets True. |
| wasOpenHandshakeTimeout | False | When performing the opening handshake, but the peer did not finish in time, this gets True. |
| wasCloseHandshakeTimeout | False | When we initiated a closing handshake, but the peer did not respond in time, this gets True. |
| localCloseCode | 1000 | The close code I sent in close frame (if any). |
| localCloseReason | None | The close reason I sent in close frame (if any). |
| remoteCloseCode | 1000 | The close code the peer sent me in close frame (if any). |
| remoteCloseReason | None | The close reason the peer sent me in close frame (if any). |
| Chop Size | Count | Octets |
| 4 | 1 | 4 |
| 31 | 1 | 31 |
| 166 | 1 | 166 |
| Total | 3 | 201 |
| Chop Size | Count | Octets |
| 6 | 1 | 6 |
| 7 | 29 | 203 |
| 8 | 1 | 8 |
| 243 | 1 | 243 |
| Total | 32 | 460 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| Total | 2 |
| Opcode | Count |
| 0 | 29 |
| 1 | 1 |
| 8 | 1 |
| Total | 31 |
000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32352e31
302e312d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a436f6e6e656374696f6e3a2075706772
6164650d0a5365632d576562736f ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=12c704f4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
H
003 TX OCTETS: 018112c704f45a
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=03f94d07, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
005 TX OCTETS: 008103f94d0766
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=4e07bdc0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
007 TX OCTETS: 00814e07bdc022
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=29ffa3d7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
009 TX OCTETS: 008129ffa3d745
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e2a9d02f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
o
011 TX OCTETS: 0081e2a9d02f8d
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=cf9a86c4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
013 TX OCTETS: 0081cf9a86c4e2
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=ea973fb2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc2
015 TX OCTETS: 0081ea973fb228
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c113d20a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
017 TX OCTETS: 0081c113d20a74
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=686c0883, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
@
019 TX OCTETS: 0081686c088328
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a0eac8cf, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
021 TX OCTETS: 0081a0eac8cf63
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=7aedb042, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x9f
023 TX OCTETS: 00817aedb042e5
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=3aec6a84, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
025 TX OCTETS: 00813aec6a84f9
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=50cf0c4d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb6
027 TX OCTETS: 008150cf0c4de6
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=75648ad1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
029 TX OCTETS: 008175648ad1b6
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c425234f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa4
031 TX OCTETS: 0081c425234f60
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=243765a9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
033 TX OCTETS: 0081243765a9e7
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=472dc23e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
035 TX OCTETS: 0081472dc23efb
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c0247a82, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
037 TX OCTETS: 0081c0247a8203
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=7f8ce35b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
039 TX OCTETS: 00817f8ce35bdf
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=b04ea0cc, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
041 TX OCTETS: 0081b04ea0cc73
042 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8ecae1f7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa1
043 TX OCTETS: 00818ecae1f72f
044 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=6172c06a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
045 TX OCTETS: 00816172c06a4c
046 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=62b2a6e1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
U
047 TX OCTETS: 008162b2a6e137
048 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=1de34c44, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
T
049 TX OCTETS: 00811de34c4449
050 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=82f99ad1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
F
051 TX OCTETS: 008182f99ad1c4
052 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=787a4834, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
053 TX OCTETS: 0081787a483455
054 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8d673bef, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
8
055 TX OCTETS: 00818d673befb5
056 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d906f8ad, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
057 TX OCTETS: 0081d906f8adf8
058 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8619b7f2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
059 TX OCTETS: 00818619b7f2a7
060 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=de1d8143, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
061 TX OCTETS: 8080de1d8143
062 CLOSE CONNECTION AFTER 1.000000 sec
063 RX OCTETS: 811d48656c6c6f2dc2b540c39fc3b6c3a4c3bcc3a0c3a12d5554462d382121
064 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=29, MASKED=False, MASK=None
Hello-µ@ßöäüàá-UTF-8!!
065 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=7f77ef69, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
066 TX OCTETS: 88827f77ef697c9f
067 RX OCTETS: 880203e8
068 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
0x03e8
069 TCP DROPPED BY PEER