Autobahn WebSocket Testsuite Report
Autobahn WebSocket

websock server - Case 7.3.4 : Pass - 1 ms @ 2026-06-02T16:11:46.653Z

Case Description

Send a close frame with close code and close reason

Case Expectation

Clean close with normal code.

Case Outcome

Actual events match at least one expected.

Expected:
{'OK': []}

Observed:
[]

Case Closing Behavior

The spec requires the connection to be failed cleanly here (UNCLEAN)



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: hbr3lLZ7IX8r2mOOX5TV3A==
Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols
Date: Tue, 02 Jun 2026 16:11:46 GMT
Connection: Upgrade
Upgrade: websocket
Sec-Websocket-Accept: TrZ787aaZZ/goQPOMoO8Ao6iuI4=


Closing Behavior

KeyValueDescription
isServerFalseTrue, iff I (the fuzzer) am a server, and the peer is a client.
closedByMeTrueTrue, 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.
localCloseCode1000The close code I sent in close frame (if any).
localCloseReasonHello World!The 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
20120
2441244
Total2264

Frames Received by Opcode

OpcodeCount
Total0

Frames Transmitted by Opcode

OpcodeCount
81
Total1


Wire Log

000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
               2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205475652c203032204a75
               6e20323032362031363a31313a34 ...
002 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=14, MASK=0bf250a0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0x03e848656c6c6f20576f726c6421
003 TX OCTETS: 888e0bf250a0081a18c5679e3f805c9d22cc6fd3
004 FAIL CONNECTION AFTER 1.000000 sec
005 TCP DROPPED BY PEER