tokio-websockets - Case 6.3.2 : Pass - 1 ms @ 2026-03-17T09:50:07.520Z
Case Description
Send invalid UTF-8 text message in fragments of 1 octet, resulting in frames ending on positions which are not code point ends.
MESSAGE:
cebae1bdb9cf83cebcceb5eda080656469746564
Case Expectation
The connection is failed immediately, since the payload is not valid UTF-8.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': []}
Observed:
[]
Case Closing Behavior
Connection was properly closed (OK)
GET / HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:9006 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: OenJWEeqaVX3dAXjoIx2Sw== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: /2CvrJzAyhrf4P3xdIO+4Sx2C7Y=
| Key | Value | Description |
| isServer | False | True, iff I (the fuzzer) am a server, and the peer is a client. |
| closedByMe | False | 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 | False | True, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility). |
| wasNotCleanReason | peer dropped the TCP connection without previous WebSocket closing handshake | 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 | None | The close code I sent in close frame (if any). |
| localCloseReason | None | The close reason I sent in close frame (if any). |
| remoteCloseCode | None | 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 |
| 129 | 1 | 129 |
| Total | 1 | 129 |
| Chop Size | Count | Octets |
| 6 | 1 | 6 |
| 7 | 20 | 140 |
| 242 | 1 | 242 |
| Total | 22 | 388 |
| Opcode | Count |
| Total | 0 |
| Opcode | Count |
| 0 | 20 |
| 1 | 1 |
| Total | 21 |
000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32352e31
302e312d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a557067726164653a20776562736f636b
65740d0a436f6e6e656374696f6e ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=b33943c2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
003 TX OCTETS: 0181b33943c27d
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=24dbd49a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xba
005 TX OCTETS: 008124dbd49a9e
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8563026e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xe1
007 TX OCTETS: 00818563026e64
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=3bd09d33, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbd
009 TX OCTETS: 00813bd09d3386
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=eca9f0f9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb9
011 TX OCTETS: 0081eca9f0f955
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=57dc3ec6, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xcf
013 TX OCTETS: 008157dc3ec698
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=1b33367e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x83
015 TX OCTETS: 00811b33367e98
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=7d625308, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
017 TX OCTETS: 00817d625308b3
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=bbf62b1b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
019 TX OCTETS: 0081bbf62b1b07
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a6a47574, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
021 TX OCTETS: 0081a6a4757468
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=38d35512, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
023 TX OCTETS: 008138d355128d
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=0848442d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xed
025 TX OCTETS: 00810848442de5
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e411036e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
027 TX OCTETS: 0081e411036e44
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=44819b30, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x80
029 TX OCTETS: 008144819b30c4
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2b47cc31, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
031 TX OCTETS: 00812b47cc314e
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d4e13ea7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
033 TX OCTETS: 0081d4e13ea7b0
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=329acac1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
i
035 TX OCTETS: 0081329acac15b
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e5f6f0a8, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
t
037 TX OCTETS: 0081e5f6f0a891
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=82c719fd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
039 TX OCTETS: 008182c719fde7
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=959bf23c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
041 TX OCTETS: 0081959bf23cf1
042 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=27be6696, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
043 TX OCTETS: 808027be6696
044 FAIL CONNECTION AFTER 1.000000 sec
045 TCP DROPPED BY PEER