websock server - Case 5.8 : Pass - 3 ms @ 2026-08-25T04:35:32.315Z
Case Description
Send text Message fragmented into 2 fragments, one ping with payload in-between. Octets are sent in octet-wise chops.
Case Expectation
A pong is received, then the message is echo'ed back to us.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': [('pong', u'ping payload'), ('message', u'fragment1fragment2', False)]}
Observed:
[('pong', u'ping payload'), ('message', u'fragment1fragment2', False)]
Case Closing Behavior
The spec requires the connection to be failed cleanly here (UNCLEAN)
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: 3I93//Z+I3to0Uzr4tV9gg== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Tue, 25 Aug 2026 04:35:32 GMT Connection: Upgrade Upgrade: websocket Sec-Websocket-Accept: SW4GpWX/U+wA/HPCzj24pu+oTUs=
| 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 | 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 | 1000 | 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 |
| 14 | 1 | 14 |
| 20 | 1 | 20 |
| 166 | 1 | 166 |
| Total | 3 | 200 |
| Chop Size | Count | Octets |
| 1 | 48 | 48 |
| 8 | 1 | 8 |
| 244 | 1 | 244 |
| Total | 50 | 300 |
| Opcode | Count |
| 1 | 1 |
| 10 | 1 |
| Total | 2 |
| Opcode | Count |
| 0 | 1 |
| 1 | 1 |
| 8 | 1 |
| 9 | 1 |
| Total | 4 |
000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205475652c203235204175
6720323032362030343a33353a33 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=b1c8d7b5, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=1, SYNC=False
fragment1
003 TX OCTETS: 01
004 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=12, MASK=6e56331e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=1, SYNC=False
ping payload
005 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=47d82b01, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=1, SYNC=False
fragment2
006 CLOSE CONNECTION AFTER 1.000000 sec
007 TX OCTETS: 89
008 TX OCTETS: b1
009 TX OCTETS: c8
010 TX OCTETS: d7
011 TX OCTETS: b5
012 TX OCTETS: d7
013 TX OCTETS: ba
014 TX OCTETS: b6
015 TX OCTETS: d2
016 TX OCTETS: dc
017 TX OCTETS: ad
018 TX OCTETS: b9
019 TX OCTETS: c1
020 TX OCTETS: 80
021 TX OCTETS: 89
022 TX OCTETS: 8c
023 TX OCTETS: 6e
024 TX OCTETS: 56
025 TX OCTETS: 33
026 TX OCTETS: 1e
027 TX OCTETS: 1e
028 TX OCTETS: 3f
029 TX OCTETS: 5d
030 TX OCTETS: 79
031 TX OCTETS: 4e
032 TX OCTETS: 26
033 TX OCTETS: 52
034 TX OCTETS: 67
035 TX OCTETS: 02
036 TX OCTETS: 39
037 TX OCTETS: 52
038 TX OCTETS: 7a
039 TX OCTETS: 80
040 RX OCTETS: 8a0c70696e67207061796c6f6164
041 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=12, MASKED=False, MASK=None
ping payload
042 TX OCTETS: 89
043 TX OCTETS: 47
044 TX OCTETS: d8
045 TX OCTETS: 2b
046 TX OCTETS: 01
047 TX OCTETS: 21
048 TX OCTETS: aa
049 TX OCTETS: 4a
050 TX OCTETS: 66
051 TX OCTETS: 2a
052 TX OCTETS: bd
053 TX OCTETS: 45
054 TX OCTETS: 75
055 TX OCTETS: 75
056 RX OCTETS: 8112667261676d656e7431667261676d656e7432
057 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=18, MASKED=False, MASK=None
fragment1fragment2
058 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=e8fa0a72, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
059 TX OCTETS: 8882e8fa0a72eb12
060 TCP DROPPED BY PEER