websock server - Case 5.19 : Pass - 1012 ms @ 2025-09-19T08:56:00.097Z
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
Connection was properly closed (OK)
GET /ws HTTP/1.1 User-Agent: AutobahnTestSuite/0.8.2-0.10.9 Host: 127.0.0.1:8888 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: nm4fvW9Wiw3FdGnLf4eMuQ== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Fri, 19 Sep 2025 08:56:00 GMT Upgrade: websocket Connection: Upgrade Sec-Websocket-Accept: npX8f1YF7SjrVpDU1emTKA+FEp0=
| 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 |
| 11 | 1 | 11 |
| 58 | 1 | 58 |
| 166 | 1 | 166 |
| Total | 4 | 239 |
| Chop Size | Count | Octets |
| 8 | 1 | 8 |
| 15 | 7 | 105 |
| 242 | 1 | 242 |
| Total | 9 | 355 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| 10 | 2 |
| Total | 4 |
| Opcode | Count |
| 0 | 4 |
| 1 | 1 |
| 8 | 1 |
| 9 | 2 |
| Total | 8 |
000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f302e
382e322d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a204672692c203139205365
7020323032352030383a35363a30 ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=d871533c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment1
003 TX OCTETS: 0189d871533cbe03325bb5143d48e9
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=b5db0c7b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment2
005 TX OCTETS: 0089b5db0c7bd3a96d1cd8be620f87
006 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=5164417c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 1!
007 TX OCTETS: 89895164417c210b2f1b3c01614d70
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=810ee96a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment3
013 TX OCTETS: 0089810ee96ae77c880dec6b871eb2
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=13ad24be, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment4
015 TX OCTETS: 008913ad24be75df45d97ec84aca27
016 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=2f79082a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
pongme 2!
017 TX OCTETS: 89892f79082a5f16664d421c28180e
018 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=ec464f83, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
fragment5
019 TX OCTETS: 8089ec464f838a342ee4812321f7d9
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=58484d47, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
025 TX OCTETS: 888258484d475ba0
026 RX OCTETS: 880203e8
027 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
0x03e8
028 TCP DROPPED BY PEER