websock secure server - Case 6.3.2 : Pass - 2 ms @ 2025-11-26T12:31:55.109Z
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: l/DsgY68YqtU3N/6iKgR8w== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Wed, 26 Nov 2025 12:31:55 GMT Upgrade: websocket Connection: Upgrade Sec-Websocket-Accept: qnJAwyZM/gpb4XcE6Yy1s25JxlY=
| 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: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205765642c203236204e6f
7620323032352031323a33313a35 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=06dcfea0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
003 TX OCTETS: 018106dcfea0c8
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=6191037c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xba
005 TX OCTETS: 00816191037cdb
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f1cba204, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xe1
007 TX OCTETS: 0081f1cba20410
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=314285be, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbd
009 TX OCTETS: 0081314285be8c
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e9d31993, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb9
011 TX OCTETS: 0081e9d3199350
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=7a8a434f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xcf
013 TX OCTETS: 00817a8a434fb5
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=72355c45, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x83
015 TX OCTETS: 008172355c45f1
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=94d3b9a0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
017 TX OCTETS: 008194d3b9a05a
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8ccd272c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
019 TX OCTETS: 00818ccd272c30
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e7c95546, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xce
021 TX OCTETS: 0081e7c9554629
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=0e53e5b4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
023 TX OCTETS: 00810e53e5b4bb
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=968ce1b3, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xed
025 TX OCTETS: 0081968ce1b37b
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=7b9fc420, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
027 TX OCTETS: 00817b9fc420db
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=48ea7fb5, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x80
029 TX OCTETS: 008148ea7fb5c8
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e0064e4d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
031 TX OCTETS: 0081e0064e4d85
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=abb2ae66, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
033 TX OCTETS: 0081abb2ae66cf
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=9ca89045, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
i
035 TX OCTETS: 00819ca89045f5
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=b9f56479, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
t
037 TX OCTETS: 0081b9f56479cd
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c4dc435c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
039 TX OCTETS: 0081c4dc435ca1
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=898fd787, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
d
041 TX OCTETS: 0081898fd787ed
042 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=20d360b8, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
043 TX OCTETS: 808020d360b8
044 FAIL CONNECTION AFTER 1.000000 sec
045 TCP DROPPED BY PEER