crafter-debug had a placeholder transport that reported every instance
unreachable. Cli::ConnectQuic dials 127.0.0.1 at the port in the
discovery record on the first call, keeps the connection for the next,
and dials again after one is lost. Each call opens a stream, sends the
request with a FIN, and reads lines: one with a result or an error is
the reply, anything before it a stream line for onLine, which runs on
the calling thread so a slow terminal never stalls msquic's worker.
Past the deadline the stream is aborted and the call times out.
The handshake gives up after 3 s, and keep-alives every 2 s hold a
quiet follow or a long wait open under the 10 s idle timeout. main
starts a pool with one worker, which Network reports some failures on,
and ends with _Exit once Run has closed its connections, since msquic's
teardown at exit waits on connections.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Cli::Run is the whole client but its transport, so tests run it in
process against a real Session; main will hand it the QUIC connection.
- Commands: ls, status, cmds, help, call, get, set, pause, resume,
step, wait, trace, log (with --follow), screenshot, quit, debugger,
guide and version, with -i, --json and --timeout.
- call types key=value from the command's argument schema (slot=1 is
a number, name=1 a string, at.x=3 nests), so agents need no JSON
for simple calls; a value that cannot fit its field is a usage
error before anything is sent.
- The instance comes from discovery; one running instance needs no -i.
The record's protocol is checked before any request: a mismatch
exits 4, says which side is newer and prints the app's own client.
Other sources only warn.
- A request with no reply is diagnosed: the app has exited, stopped
in a debugger (with the attach command), or no longer calls Pump
(with what to change). Exit codes: 2 usage, 3 no instance,
4 version, 5 timeout, 6 the app's error.
- Output is short by default, arrays cut at 20 with a note; --json
prints everything. `guide` is the full reference for agents.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
