websock server - Case 5.19 : Pass - 1002 ms @ 2025-11-26T12:31:44.890Z
Case Description
A fragmented text message is sent in multiple frames. After
sending the first 2 frames of the text message, a Ping is sent. Then we wait 1s,
then we send 2 more text fragments, another Ping and then the final text fragment.
Everything is legal.
Case Expectation
The peer immediately answers the first Ping before
it has received the last text message fragment. The peer pong's back the Ping's
payload exactly, and echo's the payload of the fragmented message back to us.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': [('pong', u'pongme 1!'), ('pong', u'pongme 2!'), ('message', u'fragment1fragment2fragment3fragment4fragment5', False)]}
Observed:
[('pong', u'pongme 1!'), ('pong', u'pongme 2!'), ('message', u'fragment1fragment2fragment3fragment4fragment5', 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: Sqdu5nyJOLucYK+qRHgZBw== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Wed, 26 Nov 2025 12:31:44 GMT Upgrade: websocket Connection: Upgrade Sec-Websocket-Accept: 5VAY5L/8TA2hluvbHOm+ul2vRSQ=
| 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 |
| 11 | 1 | 11 |
| 58 | 1 | 58 |
| 166 | 1 | 166 |
| Total | 3 | 235 |
| Chop Size | Count | Octets |
| 8 | 1 | 8 |
| 15 | 7 | 105 |
| 244 | 1 | 244 |
| Total | 9 | 357 |
| Opcode | Count |
| 1 | 1 |
| 10 | 2 |
| Total | 3 |
| Opcode | Count |
| 0 | 4 |
| 1 | 1 |
| 8 | 1 |
| 9 | 2 |
| Total | 8 |
000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205765642c203236204e6f
7620323032352031323a33313a34 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=e0b2180e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment1
003 TX OCTETS: 0189e0b2180e86c079698dd7767ad1
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=16464d9a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment2
005 TX OCTETS: 008916464d9a70342cfd7b2323ee24
006 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=b4876f5b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 1!
007 TX OCTETS: 8989b4876f5bc4e8013cd9e24f6a95
008 DELAY 1.000000 sec for TAG None
009 RX OCTETS: 8a09706f6e676d65203121
010 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=False, MASK=None
pongme 1!
011 DELAY TIMEOUT on TAG None
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=48fed5b4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment3
013 TX OCTETS: 008948fed5b42e8cb4d3259bbbc07b
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=b57810e3, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment4
015 TX OCTETS: 0089b57810e3d30a7184d81d7e9781
016 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=84dccc66, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 2!
017 TX OCTETS: 898984dccc66f4b3a201e9b9ec54a5
018 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=74951b96, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment5
019 TX OCTETS: 808974951b9612e77af119f075e241
020 CLOSE CONNECTION AFTER 1.000000 sec
021 RX OCTETS: 8a09706f6e676d65203221812d667261676d656e7431667261676d656e7432667261676d656e7433667261676d656e743466
7261676d656e7435
022 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=False, MASK=None
pongme 2!
023 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=45, MASKED=False, MASK=None
fragment1fragment2fragment3fragment4fragment5
024 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=20347056, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
025 TX OCTETS: 88822034705623dc
026 TCP DROPPED BY PEER