tokio-websockets - Case 5.20 : Pass - 1003 ms @ 2026-07-31T01:42:26.851Z
Case Description
Same as Case 5.19, but send all frames with SYNC = True.
Note, this does not change the octets sent in any way, only how the stream
is chopped up on the wire.
Case Expectation
Same as Case 5.19. Implementations must be agnostic to how
octet stream is chopped up on wire (must be TCP clean).
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
Connection was properly closed (OK)
GET /runCase?case=64&agent=tokio-websockets HTTP/1.1 Host: localhost:9001 Upgrade: websocket Connection: Upgrade Sec-WebSocket-Key: OMgF/Da5Q8/32YaW1KQ5cw== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Server: AutobahnTestSuite/25.10.1-0.10.9 X-Powered-By: AutobahnPython/0.10.9 Upgrade: WebSocket Connection: Upgrade Sec-WebSocket-Accept: osNAUa5E/4hOIuaSCdw6WFFvzTw=
| Key | Value | Description |
| isServer | True | 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 | True | 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 |
| 8 | 1 | 8 |
| 15 | 2 | 30 |
| 51 | 1 | 51 |
| 191 | 1 | 191 |
| Total | 5 | 280 |
| Chop Size | Count | Octets |
| 4 | 1 | 4 |
| 11 | 7 | 77 |
| 208 | 1 | 208 |
| Total | 9 | 289 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| 10 | 2 |
| Total | 4 |
| Opcode | Count |
| 0 | 4 |
| 1 | 1 |
| 8 | 1 |
| 9 | 2 |
| Total | 8 |
000 RX OCTETS: 474554202f72756e436173653f636173653d3634266167656e743d746f6b696f2d776562736f636b65747320485454502f31
2e310d0a486f73743a206c6f6361 ...
001 TX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a5365727665723a204175746f6261686e
5465737453756974652f32352e31 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
fragment1
003 TX OCTETS: 0109667261676d656e7431
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
fragment2
005 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
pongme 1!
006 DELAY 1.000000 sec for TAG None
007 TX OCTETS: 0009667261676d656e7432
008 TX OCTETS: 8909706f6e676d65203121
009 RX OCTETS: 8a89f5bbc2ca85d4acad98dee2fbd4
010 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=True, MASK=6635626263326361
pongme 1!
011 DELAY TIMEOUT on TAG None
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
fragment3
013 TX OCTETS: 0009667261676d656e7433
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
fragment4
015 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
pongme 2!
016 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=True
fragment5
017 CLOSE CONNECTION AFTER 1.000000 sec
018 TX OCTETS: 0009667261676d656e7434
019 TX OCTETS: 8909706f6e676d65203221
020 TX OCTETS: 8009667261676d656e7435
021 RX OCTETS: 8a89eaf9df7f9a96b118879cff4dcb
022 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=True, MASK=6561663964663766
pongme 2!
023 RX OCTETS: 81ad25f15817438339704894366314972a76429c3d7951c33e65449635724b856b7157903f7a409f2c234383397048943663
10
024 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=45, MASKED=True, MASK=3235663135383137
fragment1fragment2fragment3fragment4fragment5
025 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
026 TX OCTETS: 880203e8
027 RX OCTETS: 8882856607c0868e
028 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=True, MASK=3835363630376330
0x03e8
029 TCP DROPPED BY ME