#!/bin/sh
# Build + RUN the SIGPIPE integration probe: a client that hangs up mid-response
# must not kill the server. Pure C11, no Python, no third-party anything.
#
# This is an INTEGRATION probe — it needs a running engram, and it needs the PID
# so it can tell "still serving" from "restarted by a supervisor underneath me".
# Point it at a SCRATCH instance, never at production:
#
#   cp -Rc ~/.neuron/engram /tmp/engram-scratch          # APFS clone, instant
#   EL_SINGLETON_DIR=/tmp ENGRAM_DATA_DIR=/tmp/engram-scratch \
#     ENGRAM_STORE=1 ENGRAM_API_KEY=ntn-user-2026 ENGRAM_BIND=":18753" ./engram &
#   lsof -nP -iTCP:18753 -sTCP:LISTEN     # confirm YOUR pid owns the port
#   ./engram/test/run_http_sigpipe_test.sh 18753 <pid>
#
# NEGATIVE CONTROL (invariant §8.6 — no test without one). This probe was shown
# to FAIL on the pre-change build before the fix was accepted. Measured, same
# data, same endpoint, same probe:
#     unpatched  -> SERVER DIED 43.3s after the hang-up   (exit 1)
#     patched    -> survived 2 rounds, still listening, still serving (exit 0)
# To reproduce the failing side, build the runtime at the parent commit and run
# this against it.
set -e
HERE=$(cd "$(dirname "$0")" && pwd)
CC=${CC:-cc}
PORT=${1:?usage: run_http_sigpipe_test.sh <port> <pid> [rounds] [settle_seconds]}
PID=${2:?usage: run_http_sigpipe_test.sh <port> <pid> [rounds] [settle_seconds]}
ROUNDS=${3:-2}
SETTLE=${4:-45}
TMP=$(mktemp -d)

$CC -std=c11 -Wall -Wextra -O2 "$HERE/test_http_sigpipe.c" -o "$TMP/probe"
"$TMP/probe" "$PORT" "$PID" "$ROUNDS" "$SETTLE"