websock secure server - Case 6.3.2 : Pass - 2 ms @ 2026-03-07T18:27:41.202Z
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 /wss HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:8889 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: TQFExTbYT/KRqGKLl4asBw== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Sat, 07 Mar 2026 18:27:41 GMT Connection: Upgrade Upgrade: websocket Sec-Websocket-Accept: GmiTVloHtmJJB3AYhvO5YM0peao=
| 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 |
| 166 | 1 | 166 |
| Total | 1 | 166 |
| Chop Size | Count | Octets |
| 6 | 1 | 6 |
| 7 | 20 | 140 |
| 245 | 1 | 245 |
| Total | 22 | 391 |
| Opcode | Count |
| Total | 0 |
| Opcode | Count |
| 0 | 20 |
| 1 | 1 |
| Total | 21 |
000 TX OCTETS: 474554202f77737320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32
352e31302e312d302e31302e390d ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205361742c203037204d61
7220323032362031383a32373a34 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=fdc8b9e9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
003 TX OCTETS: 0181fdc8b9e933
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2c097886, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xba
005 TX OCTETS: 00812c09788696
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e679e159, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xe1
007 TX OCTETS: 0081e679e15907
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f4f6ace0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbd
009 TX OCTETS: 0081f4f6ace049
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d0421a7b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb9
011 TX OCTETS: 0081d0421a7b69
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f349e5a7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xcf
013 TX OCTETS: 0081f349e5a73c
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=cd713ad1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x83
015 TX OCTETS: 0081cd713ad14e
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=296b7fc6, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
017 TX OCTETS: 0081296b7fc6e7
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2ad0118f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
019 TX OCTETS: 00812ad0118f96
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d026be3f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
021 TX OCTETS: 0081d026be3f1e
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a8ee34ed, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
023 TX OCTETS: 0081a8ee34ed1d
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=efb7efe3, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xed
025 TX OCTETS: 0081efb7efe302
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=bbb4f09b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
027 TX OCTETS: 0081bbb4f09b1b
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e6bf2bbc, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x80
029 TX OCTETS: 0081e6bf2bbc66
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a6c05881, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
031 TX OCTETS: 0081a6c05881c3
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=08f78f43, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
033 TX OCTETS: 008108f78f436c
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=63f09f03, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
i
035 TX OCTETS: 008163f09f030a
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f8ef484e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
t
037 TX OCTETS: 0081f8ef484e8c
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=879c481d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
039 TX OCTETS: 0081879c481de2
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e73f74ef, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
041 TX OCTETS: 0081e73f74ef83
042 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=6b1a7c52, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
043 TX OCTETS: 80806b1a7c52
044 FAIL CONNECTION AFTER 1.000000 sec
045 TCP DROPPED BY PEER