Autobahn WebSocket Testsuite Report
Autobahn WebSocket

websock server - Case 5.16 : Pass - 1 ms @ 2025-11-26T12:34:37.849Z

Case Description

Repeated 2x: Continuation Frame with FIN = false (where there is nothing to continue), then text Message fragmented into 2 fragments.

Case Expectation

The connection is failed immediately, since there is no message to continue.

Case Outcome

Actual events match at least one expected.

Expected:
{'OK': []}

Observed:
[]

Case Closing Behavior

Connection was properly closed (OK)



Opening Handshake

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: a3YUUAkteMscaqZOmoIu0w==
Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols
Date: Wed, 26 Nov 2025 12:34:37 GMT
Connection: Upgrade
Upgrade: websocket
Sec-Websocket-Accept: IHCcOqHs45EhLYI0frzwKmn3LZw=


Closing Behavior

KeyValueDescription
isServerFalseTrue, iff I (the fuzzer) am a server, and the peer is a client.
closedByMeFalseTrue, iff I have initiated closing handshake (that is, did send close first).
failedByMeFalseTrue, 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.
droppedByMeFalseTrue, iff I dropped the TCP connection.
wasCleanFalseTrue, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility).
wasNotCleanReasonpeer dropped the TCP connection without previous WebSocket closing handshakeWhen wasClean == False, the reason what happened.
wasServerConnectionDropTimeoutFalseWhen we are a client, and we expected the server to drop the TCP, but that didn't happen in time, this gets True.
wasOpenHandshakeTimeoutFalseWhen performing the opening handshake, but the peer did not finish in time, this gets True.
wasCloseHandshakeTimeoutFalseWhen we initiated a closing handshake, but the peer did not respond in time, this gets True.
localCloseCodeNoneThe close code I sent in close frame (if any).
localCloseReasonNoneThe close reason I sent in close frame (if any).
remoteCloseCodeNoneThe close code the peer sent me in close frame (if any).
remoteCloseReasonNoneThe close reason the peer sent me in close frame (if any).


Wire Statistics

Octets Received by Chop Size

Chop SizeCountOctets
1661166
Total1166

Octets Transmitted by Chop Size

Chop SizeCountOctets
15690
2441244
Total7334

Frames Received by Opcode

OpcodeCount
Total0

Frames Transmitted by Opcode

OpcodeCount
04
12
Total6


Wire Log

000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
               2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205765642c203236204e6f
               7620323032352031323a33343a33 ...
002 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=d0b483ae, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment1
003 TX OCTETS: 0089d0b483aeb6c6e2c9bdd1eddae1
004 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=ec95621c, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment2
005 TX OCTETS: 0189ec95621c8ae7037b81f00c68de
006 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=6ad74a54, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment3
007 TX OCTETS: 80896ad74a540ca52b3307b2242059
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=a0e83d22, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment1
009 TX OCTETS: 0089a0e83d22c69a5c45cd8d535691
010 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=2a7e8359, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment2
011 TX OCTETS: 01892a7e83594c0ce23e471bed2d18
012 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=fa7ebfbe, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment3
013 TX OCTETS: 8089fa7ebfbe9c0cded9971bd1cac9
014 FAIL CONNECTION AFTER 1.000000 sec
015 TCP DROPPED BY PEER