websock secure server - Case 5.19 : Pass - 1003 ms @ 2025-11-26T12:36:17.188Z
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 /wss HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:8889 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: 9iN1xO1/x/Cs3Xq56D009A== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Wed, 26 Nov 2025 12:36:17 GMT Connection: Upgrade Upgrade: websocket Sec-Websocket-Accept: dXGIsTQEWg1DmZU28QWzv4F8/b8=
| 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 | 2 | 22 |
| 47 | 1 | 47 |
| 166 | 1 | 166 |
| Total | 4 | 235 |
| Chop Size | Count | Octets |
| 8 | 1 | 8 |
| 15 | 7 | 105 |
| 245 | 1 | 245 |
| Total | 9 | 358 |
| Opcode | Count |
| 1 | 1 |
| 10 | 2 |
| Total | 3 |
| Opcode | Count |
| 0 | 4 |
| 1 | 1 |
| 8 | 1 |
| 9 | 2 |
| Total | 8 |
000 TX OCTETS: 474554202f77737320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32
352e31302e312d302e31302e390d ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205765642c203236204e6f
7620323032352031323a33363a31 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=58c3c5a4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment1
003 TX OCTETS: 018958c3c5a43eb1a4c335a6abd069
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=57381928, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment2
005 TX OCTETS: 008957381928314a784f3a5d775c65
006 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=32f7810e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 1!
007 TX OCTETS: 898932f7810e4298ef695f92a13f13
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=e5bb0566, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment3
013 TX OCTETS: 0089e5bb056683c9640188de6b12d6
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=b0469a6a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment4
015 TX OCTETS: 0089b0469a6ad634fb0ddd23f41e84
016 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=2fa9ef6c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 2!
017 TX OCTETS: 89892fa9ef6c5fc6810b42cccf5e0e
018 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=0e34e27e, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment5
019 TX OCTETS: 80890e34e27e6846831963518c0a3b
020 CLOSE CONNECTION AFTER 1.000000 sec
021 RX OCTETS: 8a09706f6e676d65203221
022 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=False, MASK=None
pongme 2!
023 RX OCTETS: 812d667261676d656e7431667261676d656e7432667261676d656e7433667261676d656e7434667261676d656e7435
024 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=45, MASKED=False, MASK=None
fragment1fragment2fragment3fragment4fragment5
025 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=9a611289, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
026 TX OCTETS: 88829a6112899989
027 TCP DROPPED BY PEER