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Speed up WebCRT and record audited commands from the device echo.

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Performance: event-driven stdout pump (no polling thread per socket, no 200ms
coalescing stall), keystrokes written immediately, blocking SSH reads, bounded
deque queue with batch drain, incremental UTF-8 decode, buffered session log,
non-blocking session teardown, shorter login/settle waits, xterm WebGL renderer
and idle-time direct writes. Zero-latency fake device: echo p50 11ms -> 2.3ms,
command RTT 219ms -> 20ms, bulk output 2.1 -> 8.3 MB/s.

Audit: track the device's own input row server-side (webcrt_cmd_audit) and
resolve each Enter from the echoed line feed, so Tab, backspace, cursor-key
edits, history recall, paste, Ctrl-C and pagers record what actually ran.
Password lines are redacted; pending Enters are flushed on close.

Hop: stop closing the hop session when the target prints the same prompt as the
hop (system-view); recognise the Huawei "closed by the remote host" message.
Generic NEs that show a network prompt now get the network key map.

Adds bench_webcrt.py, fake_ssh_device.py and e2e_webcrt_input_scenarios.py.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
oliver 2026-10-12 07:34:30 +08:00
parent 0d894efe5e
commit 45de8144a3
14 changed files with 2060 additions and 241 deletions
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4
netx_api/ne_cli_hop.py
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@ -10,7 +10,9 @@ from netmiko import ConnectHandler
_CLI_HOP_NESTED_END_RE = re.compile(
r"(?is)"
r"(?:^|\n)\s*(?:"
r"connection\s+closed(?:\s+by\s+(?:foreign|remote)\s+host)?"
# Huawei VRP: "Info: The connection was closed by the remote host."
r"(?:info:\s*)?(?:the\s+)?connection\s+was\s+closed\s+by\s+(?:the\s+)?(?:foreign|remote)\s+host"
r"|connection\s+closed(?:\s+by\s+(?:foreign|remote)\s+host)?"
r"|closed\s+by\s+foreign\s+host"
r"|connection\s+to\s+\S+\s+closed"
r"|%\s*connection\s+closed(?:\s+by\s+(?:foreign|remote)\s+host)?"