websock server - Case 1.2.8 : Pass - 23 ms @ 2026-01-07T13:37:18.405Z
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: SAIEMoWFZ8fe3vcMZgh+BA== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Wed, 07 Jan 2026 13:37:18 GMT Connection: Upgrade Upgrade: websocket Sec-Websocket-Accept: U0slwFPazxCratZqZsTL9RzOa5o=
| 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: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205765642c203037204a61
6e20323032362031333a33373a31 ...
002 TX FRAME : OPCODE=2, FIN=True, RSV=0, PAYLOAD-LEN=65536, MASK=46e96db7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=997, SYNC=False
0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe
fefefefefefefefefefefefefefefe ...
003 TX OCTETS: 82ff000000000001000046e96db7b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
004 FAIL CONNECTION AFTER 10.000000 sec
005 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
006 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
007 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
008 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
009 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
010 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
011 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
012 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
013 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
014 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
015 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
016 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
017 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
018 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
019 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
020 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
021 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
022 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
023 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
024 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
025 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
026 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
027 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
028 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
029 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
030 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
031 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
032 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
033 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
034 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
035 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
036 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
037 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
038 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
039 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
040 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
041 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
042 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
043 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
044 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
045 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
046 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
047 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
048 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
049 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
050 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
051 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
052 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
053 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
054 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
055 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
056 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
057 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
058 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
059 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
060 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
061 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
062 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
063 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
064 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
065 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
066 TX OCTETS: b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b817
9349b8179349b8179349b8179349 ...
067 TX OCTETS: 179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b81793
49b8179349b8179349b8179349b8 ...
068 TX OCTETS: 9349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349
b8179349b8179349b8179349b817 ...
069 TX OCTETS: 49b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8179349b8
179349b8179349b8179349b81793 ...
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=b645c54e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
074 TX OCTETS: 8882b645c54eb5ad
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