Autobahn WebSocket Testsuite Report
Autobahn WebSocket

websock secure server - Case 5.16 : Pass - 1 ms @ 2026-08-25T04:35:42.543Z

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 /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: NZbK3jaXM3EhXEjX8K8nhg==
Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols
Date: Tue, 25 Aug 2026 04:35:42 GMT
Upgrade: websocket
Connection: Upgrade
Sec-Websocket-Accept: ZmVcATkH7tJTrb8QB3nBLytXg9k=


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
2451245
Total7335

Frames Received by Opcode

OpcodeCount
Total0

Frames Transmitted by Opcode

OpcodeCount
04
12
Total6


Wire Log

000 TX OCTETS: 474554202f77737320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32
               352e31302e312d302e31302e390d ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205475652c203235204175
               6720323032362030343a33353a34 ...
002 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=d9d6d456, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment1
003 TX OCTETS: 0089d9d6d456bfa4b531b4b3ba22e8
004 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=f01bdbe2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment2
005 TX OCTETS: 0189f01bdbe29669ba859d7eb596c2
006 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=82ba3641, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment3
007 TX OCTETS: 808982ba3641e4c85726efdf5835b1
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=ea5c97f6, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment1
009 TX OCTETS: 0089ea5c97f68c2ef6918739f982db
010 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=d9f4fd59, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment2
011 TX OCTETS: 0189d9f4fd59bf869c3eb491932deb
012 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=bfb70c67, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment3
013 TX OCTETS: 8089bfb70c67d9c56d00d2d262138c
014 FAIL CONNECTION AFTER 1.000000 sec
015 TCP DROPPED BY PEER