websock server - Case 9.1.6 : Pass - 358 ms @ 2026-06-02T16:10:52.844Z
Case Description
Send text message message with payload of length 16 * 2**20 (16M).
Case Expectation
Receive echo'ed text message (with payload as sent).
Case Outcome
Received text message of length 16777216.
Expected:
{}
Observed:
[]
Case Closing Behavior
The spec requires the connection to be failed cleanly here (UNCLEAN)
GET /ws HTTP/1.1 User-Agent: AutobahnTestSuite/25.10.1-0.10.9 Host: 127.0.0.1:8888 Upgrade: WebSocket Connection: Upgrade Pragma: no-cache Cache-Control: no-cache Sec-WebSocket-Key: RQsmaZow5PaJT6dHqwvq9w== Sec-WebSocket-Version: 13
HTTP/1.1 101 Switching Protocols Date: Tue, 02 Jun 2026 16:10:52 GMT Upgrade: websocket Connection: Upgrade Sec-Websocket-Accept: GX1pMk5YbsbxgyKmdVLsWrlWMUA=
| 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 | False | True, iff full WebSocket closing handshake was performed (close frame sent and received) _and_ the server dropped the TCP (which is its responsibility). |
| wasNotCleanReason | peer dropped the TCP connection without previous WebSocket closing handshake | 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 | None | 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 |
| 166 | 1 | 166 |
| 918 | 2 | 1836 |
| 1024 | 36 | 36864 |
| 1783 | 2 | 3566 |
| 12810 | 1 | 12810 |
| 15370 | 1 | 15370 |
| 25088 | 1 | 25088 |
| 29696 | 1 | 29696 |
| 43174 | 1 | 43174 |
| 47616 | 1 | 47616 |
| 51818 | 1 | 51818 |
| 54494 | 1 | 54494 |
| 59392 | 4 | 237568 |
| 61715 | 2 | 123430 |
| 62464 | 1 | 62464 |
| 62580 | 2 | 125160 |
| 63488 | 6 | 380928 |
| 63604 | 2 | 127208 |
| 63816 | 1 | 63816 |
| 65218 | 1 | 65218 |
| 65324 | 1 | 65324 |
| 65430 | 4 | 261720 |
| 65536 | 228 | 14942208 |
| Total | 301 | 16777542 |
| Chop Size | Count | Octets |
| 8 | 1 | 8 |
| 244 | 1 | 244 |
| 16777230 | 1 | 16777230 |
| Total | 3 | 16777482 |
| Opcode | Count |
| 0 | 15 |
| 1 | 1 |
| Total | 16 |
| Opcode | Count |
| 1 | 1 |
| 8 | 1 |
| Total | 2 |
000 TX OCTETS: 474554202f777320485454502f312e310d0a557365722d4167656e743a204175746f6261686e5465737453756974652f3235
2e31302e312d302e31302e390d0a ...
001 RX OCTETS: 485454502f312e312031303120537769746368696e672050726f746f636f6c730d0a446174653a205475652c203032204a75
6e20323032362031363a31303a35 ...
002 CLOSE CONNECTION AFTER 100.000000 sec
003 TX FRAME : OPCODE=8, FIN=True, RSV=0, PAYLOAD-LEN=2, MASK=6fc641b0, PAYLOAD-REPEAT-LEN=None, CHOPSIZE=None, SYNC=False
0x03e8
004 TX OCTETS: 88826fc641b06c2e
005 TCP DROPPED BY PEER