Autobahn WebSocket Testsuite Report
Autobahn WebSocket

go-httpbin - Case 6.2.4 : Pass - 1 ms @ 2025-12-05T12:53:35.436Z

Case Description

Send a valid UTF-8 text message in fragments of 1 octet, resulting in frames ending on positions which are not code point ends.

MESSAGE:
κόσμε
cebae1bdb9cf83cebcceb5

Case Expectation

The message is echo'ed back to us.

Case Outcome

Actual events match at least one expected.

Expected:
{'OK': [('message', u'\u03ba\u1f79\u03c3\u03bc\u03b5', False)]}

Observed:
[('message', u'\u03ba\u1f79\u03c3\u03bc\u03b5', False)]

Case Closing Behavior

Connection was properly closed (OK)



Opening Handshake

GET / HTTP/1.1
User-Agent: AutobahnTestSuite/25.10.1-0.10.9
Host: 127.0.0.1:39671
Upgrade: WebSocket
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Sec-WebSocket-Key: XGlcDt0CRTJ/9X726d9etw==
Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols
Connection: upgrade
Sec-Websocket-Accept: ACPb5L0VMqRCo1T/eGBiJpJDHWo=
Upgrade: websocket
Date: Fri, 05 Dec 2025 12:53:35 GMT


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.
wasCleanTrueTrue, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility).
wasNotCleanReasonNoneWhen 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).
remoteCloseCode1000The 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
414
13113
1661166
Total3183

Octets Transmitted by Chop Size

Chop SizeCountOctets
616
71177
818
2431243
Total14334

Frames Received by Opcode

OpcodeCount
11
81
Total2

Frames Transmitted by Opcode

OpcodeCount
011
11
81
Total13


Wire Log

000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32352e31
               302e312d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a436f6e6e656374696f6e3a2075706772
               6164650d0a5365632d576562736f ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=0aad86f1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xce
003 TX OCTETS: 01810aad86f1c4
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=282c5689, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xba
005 TX OCTETS: 0081282c568992
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d1b50747, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xe1
007 TX OCTETS: 0081d1b5074730
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2ae449f8, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xbd
009 TX OCTETS: 00812ae449f897
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=05150c33, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xb9
011 TX OCTETS: 008105150c33bc
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e8a70cbd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xcf
013 TX OCTETS: 0081e8a70cbd27
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d50fa9a4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0x83
015 TX OCTETS: 0081d50fa9a456
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=6c15b7bd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xce
017 TX OCTETS: 00816c15b7bda2
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e5b05098, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xbc
019 TX OCTETS: 0081e5b0509859
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=87f598d8, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xce
021 TX OCTETS: 008187f598d849
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=eb862ce0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0xb5
023 TX OCTETS: 0081eb862ce05e
024 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=7de7f132, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
025 TX OCTETS: 80807de7f132
026 CLOSE CONNECTION AFTER 1.000000 sec
027 RX OCTETS: 810bcebae1bdb9cf83cebcceb5
028 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=11, MASKED=False, MASK=None
               κόσμε
029 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=f93bc848, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0x03e8
030 TX OCTETS: 8882f93bc848fad3
031 RX OCTETS: 880203e8
032 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
               0x03e8
033 TCP DROPPED BY PEER