websock server - Case 1.2.8 : Pass - 19 ms @ 2026-04-11T02:37:29.553Z
Case Description
Send binary message message with payload of length 65536. Sent out data in chops of 997 octets.
Case Expectation
Receive echo'ed binary message (with payload as sent). Clean close with normal code.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': [('message', '0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe ...', True)]}
Observed:
[('message', '0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe ...', True)]
Case Closing Behavior
Connection was properly closed (OK)
GET /ws HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:8888 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: ZgYOj3zMRNvw5faDLX5e4g== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Sat, 11 Apr 2026 02:37:29 GMT Upgrade: websocket Connection: Upgrade Sec-Websocket-Accept: B89zKpUoBkqNqg2DY7T9pF+STFo=
| 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 |
| 10 | 1 | 10 |
| 166 | 1 | 166 |
| 65536 | 1 | 65536 |
| Total | 4 | 65716 |
| Chop Size | Count | Octets |
| 8 | 1 | 8 |
| 244 | 1 | 244 |
| 745 | 1 | 745 |
| 997 | 65 | 64805 |
| Total | 68 | 65802 |
| Opcode | Count |
| 2 | 1 |
| 8 | 1 |
| Total | 2 |
| Opcode | Count |
| 2 | 1 |
| 8 | 1 |
| Total | 2 |
000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205361742c203131204170
7220323032362030323a33373a32 ...
002 TX FRAME : OPCODE=2, FIN=True, RSV=0, PAYLOAD-LEN=65536, MASK=03211ba5, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=997, SYNC=False
0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe
fefefefefefefefefefefefefefefe ...
003 TX OCTETS: 82ff000000000001000003211ba5fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
004 FAIL CONNECTION AFTER 10.000000 sec
005 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
006 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
007 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
008 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
009 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
010 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
011 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
012 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
013 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
014 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
015 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
016 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
017 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
018 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
019 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
020 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
021 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
022 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
023 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
024 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
025 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
026 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
027 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
028 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
029 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
030 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
031 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
032 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
033 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
034 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
035 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
036 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
037 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
038 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
039 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
040 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
041 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
042 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
043 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
044 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
045 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
046 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
047 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
048 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
049 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
050 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
051 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
052 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
053 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
054 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
055 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
056 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
057 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
058 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
059 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
060 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
061 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
062 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
063 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
064 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
065 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
066 TX OCTETS: fddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddf
e55bfddfe55bfddfe55bfddfe55b ...
067 TX OCTETS: dfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe5
5bfddfe55bfddfe55bfddfe55bfd ...
068 TX OCTETS: e55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55b
fddfe55bfddfe55bfddfe55bfddf ...
069 TX OCTETS: 5bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfddfe55bfd
dfe55bfddfe55bfddfe55bfddfe5 ...
070 RX OCTETS: 827f0000000000010000fefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe
fefefefefefefefefefefefefefe ...
071 RX OCTETS: fefefefefefefefefefe
072 RX FRAME : OPCODE=2, FIN=True, RSV=0, PAYLOAD-LEN=65536, MASKED=False, MASK=None
0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe
fefefefefefefefefefefefefefefe ...
073 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=3f2135f0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
074 TX OCTETS: 88823f2135f03cc9
075 RX OCTETS: 880203e8
076 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
0x03e8
077 TCP DROPPED BY PEER