Autobahn WebSocket Testsuite Report
Autobahn WebSocket

go-httpbin - Case 5.19 : Pass - 1002 ms @ 2025-10-25T10:46:32.412Z

Case Description

A fragmented text message is sent in multiple frames. After sending the first 2 frames of the text message, a Ping is sent. Then we wait 1s, then we send 2 more text fragments, another Ping and then the final text fragment. Everything is legal.

Case Expectation

The peer immediately answers the first Ping before it has received the last text message fragment. The peer pong's back the Ping's payload exactly, and echo's the payload of the fragmented message back to us.

Case Outcome

Actual events match at least one expected.

Expected:
{'OK': [('pong', u'pongme 1!'), ('pong', u'pongme 2!'), ('message', u'fragment1fragment2fragment3fragment4fragment5', False)]}

Observed:
[('pong', u'pongme 1!'), ('pong', u'pongme 2!'), ('message', u'fragment1fragment2fragment3fragment4fragment5', 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: 127.0.0.1:41833
Upgrade: WebSocket
Connection: Upgrade
Pragma: no-cache
Cache-Control: no-cache
Sec-WebSocket-Key: Ia2fpf5rRMXpFqWZ9DBfuA==
Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols
Connection: upgrade
Sec-Websocket-Accept: yKOOH0NgAh8UtANAQsxSV7f/dZ8=
Upgrade: websocket
Date: Sat, 25 Oct 2025 10:46:32 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
11111
58158
1661166
Total4239

Octets Transmitted by Chop Size

Chop SizeCountOctets
818
157105
2431243
Total9356

Frames Received by Opcode

OpcodeCount
11
81
102
Total4

Frames Transmitted by Opcode

OpcodeCount
04
11
81
92
Total8


Wire Log

000 TX OCTETS: 474554202f20485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f32352e31
               302e312d302e31302e390d0a486f ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a436f6e6e656374696f6e3a2075706772
               6164650d0a5365632d576562736f ...
002 TX FRAME : OPCODE=1, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=cb8459c3, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment1
003 TX OCTETS: 0189cb8459c3adf638a4a6e137b7fa
004 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=5d5324fd, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment2
005 TX OCTETS: 00895d5324fd3b21459a30364a896f
006 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=6d5bd142, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               pongme 1!
007 TX OCTETS: 89896d5bd1421d34bf25003ef1734c
008 DELAY 1.000000 sec for TAG None
009 RX OCTETS: 8a09706f6e676d65203121
010 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=False, MASK=None
               pongme 1!
011 DELAY TIMEOUT on TAG None
012 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=cbee0cd0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment3
013 TX OCTETS: 0089cbee0cd0ad9c6db7a68b62a4f8
014 TX FRAME : OPCODE=0, FIN=False, RSV=0, PAYLOAD-LEN=9, MASK=40008be9, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment4
015 TX OCTETS: 008940008be92672ea8e2d65e59d74
016 TX FRAME : OPCODE=9, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=64b12297, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               pongme 2!
017 TX OCTETS: 898964b1229714de4cf009d402a545
018 TX FRAME : OPCODE=0, FIN=True, RSV=0, PAYLOAD-LEN=9, MASK=527693fb, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               fragment5
019 TX OCTETS: 8089527693fb3404f29c3f13fd8f67
020 CLOSE CONNECTION AFTER 1.000000 sec
021 RX OCTETS: 8a09706f6e676d65203221812d667261676d656e7431667261676d656e7432667261676d656e7433667261676d656e743466
               7261676d656e7435
022 RX FRAME : OPCODE=10, FIN=True, RSV=0, PAYLOAD-LEN=9, MASKED=False, MASK=None
               pongme 2!
023 RX FRAME : OPCODE=1, FIN=True, RSV=0, PAYLOAD-LEN=45, MASKED=False, MASK=None
               fragment1fragment2fragment3fragment4fragment5
024 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=c2238e05, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
               0x03e8
025 TX OCTETS: 8882c2238e05c1cb
026 RX OCTETS: 880203e8
027 RX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASKED=False, MASK=None
               0x03e8
028 TCP DROPPED BY PEER