go-httpbin - Case 6.2.3 : Pass - 2 ms @ 2025-09-26T15:49:17.047Z
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:
Hello-µ@ßöäüàá-UTF-8!!
48656c6c6f2dc2b540c39fc3b6c3a4c3bcc3a0c3a12d5554462d382121
Case Expectation
The message is echo'ed back to us.
Case Outcome
Actual events match at least one expected.
Expected:
{'OK': [('message', u'Hello-\xb5@\xdf\xf6\xe4\xfc\xe0\xe1-UTF-8!!', False)]}
Observed:
[('message', u'Hello-\xb5@\xdf\xf6\xe4\xfc\xe0\xe1-UTF-8!!', False)]
Case Closing Behavior
Connection was properly closed (OK)
GET / HTTP/1.1 User-Agent: AutobahnTestSuite/0.8.2-0.10.9 Host: 127.0.0.1:34603 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: 5J0U8kbKnfzIewVW1FKCag== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Connection: upgrade Sec-Websocket-Accept: j3fBdJe6qIa659YgEDayLgKistY= Upgrade: websocket Date: Fri, 26 Sep 2025 15:49:17 GMT
| Key | Value | Description |
| isServer | False | True, iff I (the fuzzer) am a server, and the peer is a client. |
| closedByMe | True | True, iff I have initiated closing handshake (that is, did send close first). |
| failedByMe | False | True, 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. |
| droppedByMe | False | True, iff I dropped the TCP connection. |
| wasClean | True | True, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility). |
| wasNotCleanReason | None | When wasClean == False, the reason what happened. |
| wasServerConnectionDropTimeout | False | When we are a client, and we expected the server to drop the TCP, but that didn't happen in time, this gets True. |
| wasOpenHandshakeTimeout | False | When performing the opening handshake, but the peer did not finish in time, this gets True. |
| wasCloseHandshakeTimeout | False | When we initiated a closing handshake, but the peer did not respond in time, this gets True. |
| localCloseCode | 1000 | The close code I sent in close frame (if any). |
| localCloseReason | None | The close reason I sent in close frame (if any). |
| remoteCloseCode | 1000 | The close code the peer sent me in close frame (if any). |
| remoteCloseReason | None | The close reason the peer sent me in close frame (if any). |
| Chop Size | Count | Octets |
| 4 | 1 | 4 |
| 31 | 1 | 31 |
| 166 | 1 | 166 |
| Total | 3 | 201 |
| Chop Size | Count | Octets |
| 6 | 1 | 6 |
| 7 | 29 | 203 |
| 8 | 1 | 8 |
| 241 | 1 | 241 |
| Total | 32 | 458 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| Total | 2 |
| Opcode | Count |
| 0 | 29 |
| 1 | 1 |
| 8 | 1 |
| Total | 31 |
000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f302e382e
322d302e31302e390d0a486f7374 ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a436f6e6e656374696f6e3a2075706772
6164650d0a5365632d576562736f ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2eafc6ea, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
H
003 TX OCTETS: 01812eafc6ea66
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=891e45b0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
005 TX OCTETS: 0081891e45b0ec
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c8dead05, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
007 TX OCTETS: 0081c8dead05a4
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=74f5e726, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
009 TX OCTETS: 008174f5e72618
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e6792a2a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
o
011 TX OCTETS: 0081e6792a2a89
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=dd4c128b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
013 TX OCTETS: 0081dd4c128bf0
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2a4fcbfc, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc2
015 TX OCTETS: 00812a4fcbfce8
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c8c31d28, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
017 TX OCTETS: 0081c8c31d287d
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=6ebae895, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
@
019 TX OCTETS: 00816ebae8952e
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=871846dd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
021 TX OCTETS: 0081871846dd44
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=5056bc73, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x9f
023 TX OCTETS: 00815056bc73cf
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=b6d79a24, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
025 TX OCTETS: 0081b6d79a2475
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=05b62277, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb6
027 TX OCTETS: 008105b62277b3
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=ac475fdf, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
029 TX OCTETS: 0081ac475fdf6f
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=beb6172b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa4
031 TX OCTETS: 0081beb6172b1a
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=5502a0ae, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
033 TX OCTETS: 00815502a0ae96
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=3accb038, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
035 TX OCTETS: 00813accb03886
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=167571fd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
037 TX OCTETS: 0081167571fdd5
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=09662b16, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
039 TX OCTETS: 008109662b16a9
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=eee139e9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
041 TX OCTETS: 0081eee139e92d
042 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=980f4d55, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa1
043 TX OCTETS: 0081980f4d5539
044 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=89b18ca2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
045 TX OCTETS: 008189b18ca2a4
046 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a6161719, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
U
047 TX OCTETS: 0081a6161719f3
048 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=badc5ef9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
T
049 TX OCTETS: 0081badc5ef9ee
050 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=534e73ce, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
F
051 TX OCTETS: 0081534e73ce15
052 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=4ef815c7, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
053 TX OCTETS: 00814ef815c763
054 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=923f4c37, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
8
055 TX OCTETS: 0081923f4c37aa
056 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8b2e767a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
057 TX OCTETS: 00818b2e767aaa
058 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=36930c16, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
059 TX OCTETS: 008136930c1617
060 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=2faf2604, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
061 TX OCTETS: 80802faf2604
062 CLOSE CONNECTION AFTER 1.000000 sec
063 RX OCTETS: 811d48656c6c6f2dc2b540c39fc3b6c3a4c3bcc3a0c3a12d5554462d382121
064 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=29, MASKED=False, MASK=None
Hello-µ@ßöäüàá-UTF-8!!
065 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=25371299, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
066 TX OCTETS: 88822537129926df
067 RX OCTETS: 880203e8
068 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
0x03e8
069 TCP DROPPED BY PEER