websock server - Case 1.2.8 : Pass - 21 ms @ 2026-03-07T18:27:23.368Z
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: Se2KAPREFGRu6T5s0em+kA== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Sat, 07 Mar 2026 18:27:23 GMT Connection: Upgrade Upgrade: websocket Sec-Websocket-Accept: 48zCmQVZURBhoIM3PD50k+i2x10=
| 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: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205361742c203037204d61
7220323032362031383a32373a32 ...
002 TX FRAME : OPCODE=2, FIN=True, RSV=0, PAYLOAD-LEN=65536, MASK=e6b2d16b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=997, SYNC=False
0xfefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefefe
fefefefefefefefefefefefefefefe ...
003 TX OCTETS: 82ff0000000000010000e6b2d16b184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
004 FAIL CONNECTION AFTER 10.000000 sec
005 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
006 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
007 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
008 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
009 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
010 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
011 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
012 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
013 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
014 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
015 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
016 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
017 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
018 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
019 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
020 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
021 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
022 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
023 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
024 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
025 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
026 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
027 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
028 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
029 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
030 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
031 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
032 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
033 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
034 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
035 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
036 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
037 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
038 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
039 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
040 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
041 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
042 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
043 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
044 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
045 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
046 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
047 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
048 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
049 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
050 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
051 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
052 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
053 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
054 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
055 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
056 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
057 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
058 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
059 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
060 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
061 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
062 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
063 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
064 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
065 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
066 TX OCTETS: 184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c
2f95184c2f95184c2f95184c2f95 ...
067 TX OCTETS: 4c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f
95184c2f95184c2f95184c2f9518 ...
068 TX OCTETS: 2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95
184c2f95184c2f95184c2f95184c ...
069 TX OCTETS: 95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f95184c2f9518
4c2f95184c2f95184c2f95184c2f ...
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=56cd145a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
074 TX OCTETS: 888256cd145a5525
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