tokio-websockets - Case 6.3.2 : Pass - 1 ms @ 2026-07-12T13:05:22.660Z
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: lsWtmRn4slX+itq4RY/AKw== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: XaXVQ+qr0N6TgH0SCCf0cCDXgMM=
| 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=b16094c4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
003 TX OCTETS: 0181b16094c47f
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=480c1f75, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xba
005 TX OCTETS: 0081480c1f75f2
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=abe508f5, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xe1
007 TX OCTETS: 0081abe508f54a
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=ba379081, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbd
009 TX OCTETS: 0081ba37908107
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d626186b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb9
011 TX OCTETS: 0081d626186b6f
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a2aa24b7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xcf
013 TX OCTETS: 0081a2aa24b76d
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=5096ec7f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x83
015 TX OCTETS: 00815096ec7fd3
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=18055ae9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
017 TX OCTETS: 008118055ae9d6
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=6df9cbb2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
019 TX OCTETS: 00816df9cbb2d1
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=957ee48e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
021 TX OCTETS: 0081957ee48e5b
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=606358ac, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
023 TX OCTETS: 0081606358acd5
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=97561f0d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xed
025 TX OCTETS: 008197561f0d7a
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=5ba80028, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
027 TX OCTETS: 00815ba80028fb
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=1f6a5d84, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x80
029 TX OCTETS: 00811f6a5d849f
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c1ad24a7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
031 TX OCTETS: 0081c1ad24a7a4
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=50f7c6c0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
033 TX OCTETS: 008150f7c6c034
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8885b56e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
i
035 TX OCTETS: 00818885b56ee1
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=92173a0f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
t
037 TX OCTETS: 008192173a0fe6
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=9f7c3598, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
039 TX OCTETS: 00819f7c3598fa
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=ba1ce185, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
041 TX OCTETS: 0081ba1ce185de
042 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=b81725cb, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
043 TX OCTETS: 8080b81725cb
044 FAIL CONNECTION AFTER 1.000000 sec
045 TCP DROPPED BY PEER