Autobahn WebSocket Testsuite Report
Autobahn WebSocket

websock-client - Case 7.1.6 : Informational - 14 ms @ 2025-12-05T02:29:30.665Z

Case Description

Send 256K message followed by close then a ping

Case Expectation

Case outcome depends on implementation defined close behavior. Message and close frame are sent back to back. If the close frame is processed before the text message write is complete (as can happen in asynchronous processing models) the close frame is processed first and the text message may not be received or may only be partially received.

Case Outcome

Actual events differ from any expected.

Expected:
{'OK': [('message', u'Hello World!', False)], 'NON-STRICT': []}

Observed:
[('message', u'BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd ...', False), ('message', u'Hello World!', False)]

Case Closing Behavior

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


Opening Handshake

GET /runCase?case=215&agent=websock-client HTTP/1.1
Connection: Upgrade
Upgrade: websocket
Host: 127.0.0.1:9001
Sec-Websocket-Extensions: permessage-deflate; client_max_window_bits=15
Cache-Control: no-cache
Sec-Websocket-Version: 13
Sec-Websocket-Key: 2Qg1MvJMJU+RDxPk5lwQjQ==
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: k+OioKcNtj5LcBYkRlxGOfrp/IY=

Closing Behavior

KeyValueDescription
isServerTrueTrue, 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).
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
32132
2881288
655364262144
Total6262464

Octets Transmitted by Chop Size

Chop SizeCountOctets
212
414
14114
2081208
2621541262154
Total5262382

Frames Received by Opcode

OpcodeCount
12
Total2

Frames Transmitted by Opcode

OpcodeCount
12
81
91
Total4

Wire Log

000 RX OCTETS: 474554202f72756e436173653f636173653d323135266167656e743d776562736f636b2d636c69656e7420485454502f312e
               310d0a436f6e6e656374696f6e3a ...
001 TX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a5365727665723a204175746f6261686e
               5465737453756974652f32352e31 ...
002 TX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=10, MASK=None, PAYLOAD-REPEAT-LEN=262144, CHOPSIZE=None, SYNC=False
               BAsd7&jh23
003 TX OCTETS: 817f00000000000400004241736437266a6832334241736437266a6832334241736437266a6832334241736437266a683233
               4241736437266a68323342417364 ...
004 TX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=12, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               Hello World!
005 TX OCTETS: 810c48656c6c6f20576f726c6421
006 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0x03e8
007 TX OCTETS: 880203e8
008 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=None, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
009 TX OCTETS: 8900
010 FAIL CONNECTION AFTER 1.000000 sec
011 RX OCTETS: 81ff0000000000040000f3e76413b1a61777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7bc1d4265280835335
               998f5620b1a61777c4c10e7bc1d4 ...
012 RX OCTETS: 1777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7bc1d42652
               80835335998f5620b1a61777c4c1 ...
013 RX OCTETS: 5620b1a61777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7b
               c1d4265280835335998f5620b1a6 ...
014 RX OCTETS: 5335998f5620b1a61777c4c10e7bc1d4265280835335998f5620b1a61777c4c10e7bc1d4265280835335998f5620b1a61777
               c4c10e7bc1d4265280835335998f ...
015 RX OCTETS: 265280835335998f5620b1a61777818c164fbf135e2ad37f796fe87c6423db32
016 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=262144, MASKED=True, MASK=6633653736343133
               BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd7&jh23BAsd ...
017 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=12, MASKED=True, MASK=3136346662663133
               Hello World!
018 TCP DROPPED BY PEER