go-httpbin - Case 6.2.3 : Pass - 2 ms @ 2025-10-26T11:05:08.245Z
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/25.10.1-0.10.9 Host: 127.0.0.1:45839 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: iF7c6VxBKYFembt63NPcPQ== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Connection: upgrade Sec-Websocket-Accept: acCuhdsHkfiZoqqA2ZVfAcJZnWw= Upgrade: websocket Date: Sun, 26 Oct 2025 11:05:08 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 |
| 243 | 1 | 243 |
| Total | 32 | 460 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| Total | 2 |
| Opcode | Count |
| 0 | 29 |
| 1 | 1 |
| 8 | 1 |
| Total | 31 |
000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32352e31
302e312d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a436f6e6e656374696f6e3a2075706772
6164650d0a5365632d576562736f ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f56f70f9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
H
003 TX OCTETS: 0181f56f70f9bd
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=770ebb3d, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
e
005 TX OCTETS: 0081770ebb3d12
006 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=89a5ee8b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
007 TX OCTETS: 008189a5ee8be5
008 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=03f092e5, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
l
009 TX OCTETS: 008103f092e56f
010 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=237190b0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
o
011 TX OCTETS: 0081237190b04c
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=576f064f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
013 TX OCTETS: 0081576f064f7a
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f2abfa03, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc2
015 TX OCTETS: 0081f2abfa0330
016 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a7a2f982, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb5
017 TX OCTETS: 0081a7a2f98212
018 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a4be56e3, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
@
019 TX OCTETS: 0081a4be56e3e4
020 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e8821514, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
021 TX OCTETS: 0081e88215142b
022 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=d6ff651f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x9f
023 TX OCTETS: 0081d6ff651f49
024 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=481c8bd1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
025 TX OCTETS: 0081481c8bd18b
026 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=c2e811ef, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xb6
027 TX OCTETS: 0081c2e811ef74
028 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=9b77dc36, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
029 TX OCTETS: 00819b77dc3658
030 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=9ccea6c1, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa4
031 TX OCTETS: 00819ccea6c138
032 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e23c46dc, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
033 TX OCTETS: 0081e23c46dc21
034 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=f779bfd4, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xbc
035 TX OCTETS: 0081f779bfd44b
036 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=4804a89b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
037 TX OCTETS: 00814804a89b8b
038 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=73c791ba, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa0
039 TX OCTETS: 008173c791bad3
040 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=e8399e8a, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xc3
041 TX OCTETS: 0081e8399e8a2b
042 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=a6b0c541, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0xa1
043 TX OCTETS: 0081a6b0c54107
044 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=2749024f, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
045 TX OCTETS: 00812749024f0a
046 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=cf24f869, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
U
047 TX OCTETS: 0081cf24f8699a
048 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=4c238a26, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
T
049 TX OCTETS: 00814c238a2618
050 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=0a86df4b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
F
051 TX OCTETS: 00810a86df4b4c
052 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=86aa6eac, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
-
053 TX OCTETS: 008186aa6eacab
054 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=db89e92b, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
8
055 TX OCTETS: 0081db89e92be3
056 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=8acd3ca2, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
057 TX OCTETS: 00818acd3ca2ab
058 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=1, MASK=57d22ded, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
!
059 TX OCTETS: 008157d22ded76
060 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=0, MASK=c2d442b6, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
061 TX OCTETS: 8080c2d442b6
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=51b10740, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
066 TX OCTETS: 888251b107405259
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