From 5611e976ad368bf614e9398fc939f7d21b6d1a0a Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <johnathan@corganlabs.com>
Date: Sun, 3 May 2026 18:28:37 +0000
Subject: [PATCH] Add nostr-publish-consume integration suite
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Cover the previously untested overlay advert publish/relay/consume
round-trip. The bilateral publish/subscribe path was a v0.3.0 release
gap: malformed adverts could panic consumers, broken signatures could
go undetected, and reverse-direction subscription was unverified.

Adds testing/nat/scripts/nostr-relay-test.sh (290 lines):

Phase 1+2 (combined): wait_for_peers on both nodes; pass on
bidirectional advert publish/subscribe round-trip + dial completed;
ping6 both directions confirms TUN-level reachability.

Phase 3 (malformed advert resilience): stdlib-only Python WebSocket
client publishes a syntactically valid Schnorr-signed Kind-37195
event whose `content` is gibberish (cannot deserialize as
OverlayAdvert). The relay enforces BIP-340 signature validity, so the
event reaches the consumers (rather than being dropped at the relay)
— a trivially-junk content payload is the right adversarial input.
Required ~80 lines of stdlib-only secp256k1 + BIP-340 in the script
(no new container deps). Asserts pidof fips on both nodes after the
publish, scans logs for panic markers, re-pings to prove the existing
peer link survives.

testing/nat/docker-compose.yml: new profile nostr-publish-consume
with two daemon services (nostr-pub-a 172.31.10.20, nostr-pub-b
172.31.10.21) on shared-lan, reusing the existing strfry relay
(172.31.10.30:7777) and STUN service (172.31.10.40:3478).

testing/nat/scripts/generate-configs.sh: 2-line allowlist update so
the new scenario flows through the existing config generator (rather
than forking a parallel one). Generated node-{a,b}.yaml + npubs.env
smoke-tested cleanly.

testing/ci-local.sh: NOSTR_RELAY_SUITES=(nostr-publish-consume)
array, run_nostr_publish_consume runner, dispatch in run_integration
and run_suite. Mirrors existing run_nat shape.

.github/workflows/ci.yml: one matrix row + 3 steps in the integration
job, gated on matrix.type == 'nostr-publish-consume'. Consumes the
same fips-linux artifact and fips-test:latest image as the existing
NAT suites.

Tor/TCP transport variants kept out of v0.3.0 scope; the structure
leaves room for nostr-publish-consume-tcp/-tor siblings later without
disturbing this baseline.
---
 .github/workflows/ci.yml                |  24 ++
 testing/ci-local.sh                     |  25 ++
 testing/nat/docker-compose.yml          |  37 +++
 testing/nat/scripts/generate-configs.sh |   4 +-
 testing/nat/scripts/nostr-relay-test.sh | 372 ++++++++++++++++++++++++
 5 files changed, 460 insertions(+), 2 deletions(-)
 create mode 100755 testing/nat/scripts/nostr-relay-test.sh

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index de14352..a88b64a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -376,6 +376,13 @@ jobs:
           - suite: nat-lan
             type: nat
             scenario: lan
+          # ── Nostr overlay advert publish/consume round-trip ─────────────
+          # Two FIPS daemons + the existing strfry relay; covers Phase 1
+          # (A→B publish/consume), Phase 2 (B→A reverse), and Phase 3
+          # (malformed advert injected to relay; consumers must reject
+          # without crashing). UDP transport baseline for v0.3.0.
+          - suite: nostr-publish-consume
+            type: nostr-publish-consume
           # ── Real-deb install across target distros ─────────────────────
           # Boots a privileged systemd container per distro, runs
           # `apt install ./fips_*.deb` with the locally-built package,
@@ -617,6 +624,23 @@ jobs:
             --profile cone --profile symmetric --profile lan \
             down --volumes --remove-orphans
 
+      # ── Nostr overlay advert publish/consume ───────────────────────────
+      - name: Run Nostr publish/consume test
+        if: matrix.type == 'nostr-publish-consume'
+        run: bash testing/nat/scripts/nostr-relay-test.sh
+
+      - name: Collect logs on failure (nostr-publish-consume)
+        if: matrix.type == 'nostr-publish-consume' && failure()
+        run: |
+          docker compose -f testing/nat/docker-compose.yml \
+            --profile nostr-publish-consume logs --no-color | tail -300
+
+      - name: Stop containers (nostr-publish-consume)
+        if: matrix.type == 'nostr-publish-consume' && always()
+        run: |
+          docker compose -f testing/nat/docker-compose.yml \
+            --profile nostr-publish-consume down --volumes --remove-orphans
+
       # ── Outbound LAN gateway integration test ──────────────────────────
       - name: Generate configs (gateway)
         if: matrix.type == 'gateway'
diff --git a/testing/ci-local.sh b/testing/ci-local.sh
index bbc6176..0bbc31f 100755
--- a/testing/ci-local.sh
+++ b/testing/ci-local.sh
@@ -18,6 +18,7 @@
 #   static-mesh, static-chain, rekey, rekey-accept-off,
 #   rekey-outbound-only, gateway,
 #   acl-allowlist, nat-cone, nat-symmetric, nat-lan,
+#   nostr-publish-consume,
 #   chaos-smoke-10, chaos-churn-mixed-10, chaos-ethernet-mesh,
 #   chaos-ethernet-only, chaos-tcp-mesh, chaos-bottleneck-parent,
 #   chaos-cost-avoidance, chaos-cost-reeval, chaos-cost-stability,
@@ -74,6 +75,7 @@ GATEWAY_SUITES=(gateway)
 SIDECAR_SUITES=(sidecar)
 ACL_SUITES=(acl-allowlist)
 NAT_SUITES=(cone symmetric lan)
+NOSTR_RELAY_SUITES=(nostr-publish-consume)
 DNS_RESOLVER_SUITES=(dns-resolver)
 DEB_INSTALL_SUITES=(deb-install)
 TOR_SUITES=(tor-socks5 tor-directory)
@@ -114,6 +116,9 @@ list_suites() {
     echo "  NAT scenarios:"
     for s in "${NAT_SUITES[@]}"; do echo "    nat-$s"; done
     echo ""
+    echo "  Nostr publish/consume:"
+    for s in "${NOSTR_RELAY_SUITES[@]}"; do echo "    $s"; done
+    echo ""
     echo "  Chaos scenarios:"
     for entry in "${CHAOS_SUITES[@]}"; do
         read -ra parts <<< "$entry"
@@ -446,6 +451,19 @@ run_nat() {
     fi
 }
 
+# Run the Nostr overlay advert publish/consume integration test.
+# Two FIPS daemons + the existing strfry relay; exercises Phase 1
+# (A→B publish/consume), Phase 2 (B→A reverse), and Phase 3 (malformed
+# advert injected directly to the relay; consumer-liveness assertion).
+run_nostr_publish_consume() {
+    info "[nostr-publish-consume] Running Nostr publish/consume test"
+    if bash testing/nat/scripts/nostr-relay-test.sh 2>&1; then
+        record "nostr-publish-consume" 0
+    else
+        record "nostr-publish-consume" 1
+    fi
+}
+
 # Run dns-resolver harness (multi-distro + e2e scenarios)
 run_dns_resolver() {
     info "[dns-resolver] Running multi-distro test (slow — builds per-distro images)"
@@ -527,6 +545,11 @@ run_integration() {
         run_nat "$scenario"
     done
 
+    # Nostr publish/consume (sequential — shares the NAT compose project)
+    for _suite in "${NOSTR_RELAY_SUITES[@]}"; do
+        run_nostr_publish_consume
+    done
+
     # Chaos scenarios (parallel, throttled)
     if [[ "$SKIP_CHAOS" != true ]]; then
         info "Running ${#CHAOS_SUITES[@]} chaos scenarios (max $PARALLEL_JOBS parallel)"
@@ -611,6 +634,8 @@ run_suite() {
             run_acl_allowlist ;;
         nat-cone|nat-symmetric|nat-lan)
             run_nat "${suite#nat-}" ;;
+        nostr-publish-consume)
+            run_nostr_publish_consume ;;
         chaos-*)
             local chaos_name="${suite#chaos-}"
             local found=false
diff --git a/testing/nat/docker-compose.yml b/testing/nat/docker-compose.yml
index 79ff16a..3f2ea33 100644
--- a/testing/nat/docker-compose.yml
+++ b/testing/nat/docker-compose.yml
@@ -232,3 +232,40 @@ services:
     networks:
       shared-lan:
         ipv4_address: 172.31.10.11
+
+  # ── Nostr publish/consume profile ──────────────────────────────────────
+  # Two FIPS daemons + the existing strfry relay, exercising the overlay
+  # advert publish → relay → consumer round-trip end-to-end. Both nodes
+  # share the same LAN bridge as the relay (no NAT in the way) so the
+  # focus of the test is the Nostr discovery layer rather than NAT
+  # traversal mechanics. Phase 3 (malformed advert) is driven by a
+  # one-shot publish from the test runner via the relay's WebSocket.
+  nostr-pub-a:
+    <<: *fips-common
+    profiles: ["nostr-publish-consume"]
+    container_name: fips-nat-nostr-pub-a
+    hostname: fips-nat-nostr-pub-a
+    depends_on:
+      - relay
+      - stun
+    volumes:
+      - ../docker/resolv.conf:/etc/resolv.conf:ro
+      - ./generated-configs/nostr-publish-consume/node-a.yaml:/etc/fips/fips.yaml:ro
+    networks:
+      shared-lan:
+        ipv4_address: 172.31.10.20
+
+  nostr-pub-b:
+    <<: *fips-common
+    profiles: ["nostr-publish-consume"]
+    container_name: fips-nat-nostr-pub-b
+    hostname: fips-nat-nostr-pub-b
+    depends_on:
+      - relay
+      - stun
+    volumes:
+      - ../docker/resolv.conf:/etc/resolv.conf:ro
+      - ./generated-configs/nostr-publish-consume/node-b.yaml:/etc/fips/fips.yaml:ro
+    networks:
+      shared-lan:
+        ipv4_address: 172.31.10.21
diff --git a/testing/nat/scripts/generate-configs.sh b/testing/nat/scripts/generate-configs.sh
index 594bb1f..1078d9b 100755
--- a/testing/nat/scripts/generate-configs.sh
+++ b/testing/nat/scripts/generate-configs.sh
@@ -11,7 +11,7 @@ SCENARIO="${1:?usage: generate-configs.sh <cone|symmetric|lan> [mesh-name]}"
 MESH_NAME="${2:-nat-lab-$(date +%s)-$$}"
 
 case "$SCENARIO" in
-    cone|symmetric|lan) ;;
+    cone|symmetric|lan|nostr-publish-consume) ;;
     *)
         echo "Unknown scenario: $SCENARIO" >&2
         exit 1
@@ -30,7 +30,7 @@ npub_b="$(echo "$keys_b" | awk -F= '/^npub=/{print $2}')"
 
 relay_addr="ws://172.31.254.30:7777"
 stun_addr="stun:172.31.254.40:3478"
-if [ "$SCENARIO" = "lan" ]; then
+if [ "$SCENARIO" = "lan" ] || [ "$SCENARIO" = "nostr-publish-consume" ]; then
     relay_addr="ws://172.31.10.30:7777"
     stun_addr="stun:172.31.10.40:3478"
 fi
diff --git a/testing/nat/scripts/nostr-relay-test.sh b/testing/nat/scripts/nostr-relay-test.sh
new file mode 100755
index 0000000..4057e9f
--- /dev/null
+++ b/testing/nat/scripts/nostr-relay-test.sh
@@ -0,0 +1,372 @@
+#!/bin/bash
+#
+# Nostr overlay advert publish/consume integration test.
+#
+# Exercises the round-trip:
+#   Phase 1: A publishes overlay advert; B subscribes; B observes A's advert;
+#            B dials A.
+#   Phase 2: B publishes; A subscribes; reverse direction. (Both directions
+#            are validated together via the bidirectional `peers` count.)
+#   Phase 3: A malformed Kind-37195 advert event is published directly to
+#            the relay; both consumers must reject it (parse error path)
+#            without crashing — asserted via process liveness.
+#
+# UDP transport for v0.3.0 baseline. Tor / TCP variants out of scope here.
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+NAT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+ROOT_DIR="$(cd "$NAT_DIR/../.." && pwd)"
+BUILD_SCRIPT="$ROOT_DIR/testing/scripts/build.sh"
+GENERATE_SCRIPT="$SCRIPT_DIR/generate-configs.sh"
+WAIT_LIB="$ROOT_DIR/testing/lib/wait-converge.sh"
+
+PROFILE="nostr-publish-consume"
+SCENARIO="$PROFILE"
+COMPOSE=(docker compose -f "$NAT_DIR/docker-compose.yml")
+NODE_A="fips-nat-nostr-pub-a"
+NODE_B="fips-nat-nostr-pub-b"
+RELAY_HOST="172.31.10.30"
+RELAY_PORT=7777
+RELAY_CONTAINER="fips-nat-relay"
+
+# shellcheck disable=SC1090
+source "$WAIT_LIB"
+
+cleanup() {
+    "${COMPOSE[@]}" --profile "$PROFILE" down -v --remove-orphans \
+        >/dev/null 2>&1 || true
+}
+
+trap 'echo ""; echo "nostr-relay-test interrupted"; cleanup; exit 130' INT TERM
+
+require_docker_daemon() {
+    if ! docker info >/dev/null 2>&1; then
+        echo "Docker daemon is not reachable; cannot run nostr-relay-test" >&2
+        exit 1
+    fi
+}
+
+require_test_image() {
+    if ! docker image inspect fips-test:latest >/dev/null 2>&1; then
+        echo "fips-test:latest not found; building test image"
+        "$BUILD_SCRIPT"
+    fi
+}
+
+dump_diagnostics() {
+    echo ""
+    echo "=== nostr publish/consume diagnostics ==="
+    for c in "$NODE_A" "$NODE_B" "$RELAY_CONTAINER"; do
+        echo ""
+        echo "--- $c: logs (last 80) ---"
+        docker logs "$c" 2>&1 | tail -80 || true
+    done
+    for c in "$NODE_A" "$NODE_B"; do
+        echo ""
+        echo "--- $c: fipsctl show peers ---"
+        docker exec "$c" fipsctl show peers 2>&1 || true
+        echo "--- $c: fipsctl show links ---"
+        docker exec "$c" fipsctl show links 2>&1 || true
+    done
+}
+
+# Publish a malformed Kind-37195 (overlay-advert) event directly to the
+# relay. The event is signed with a fresh ephemeral keypair (so the
+# relay accepts it on the wire) but its `content` is gibberish that
+# cannot deserialize as OverlayAdvert. Both consumer daemons must log a
+# parse error and stay alive.
+publish_malformed_advert() {
+    local relay_host="$1"
+    local relay_port="$2"
+
+    docker exec "$NODE_A" python3 - "$relay_host" "$relay_port" <<'PY'
+import base64
+import hashlib
+import json
+import os
+import socket
+import struct
+import sys
+import time
+
+# ── Minimal secp256k1 BIP-340 (Schnorr) signer using only stdlib. ──────
+# Reference: BIP-340, secp256k1 group order n / curve params.
+P = 0xFFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFE_FFFFFC2F
+N = 0xFFFFFFFF_FFFFFFFF_FFFFFFFF_FFFFFFFE_BAAEDCE6_AF48A03B_BFD25E8C_D0364141
+G = (
+    0x79BE667E_F9DCBBAC_55A06295_CE870B07_029BFCDB_2DCE28D9_59F2815B_16F81798,
+    0x483ADA77_26A3C465_5DA4FBFC_0E1108A8_FD17B448_A6855419_9C47D08F_FB10D4B8,
+)
+
+
+def inv(a, m=P):
+    return pow(a, -1, m)
+
+
+def point_add(a, b):
+    if a is None:
+        return b
+    if b is None:
+        return a
+    if a[0] == b[0] and (a[1] != b[1] or a[1] == 0):
+        return None
+    if a == b:
+        m = (3 * a[0] * a[0]) * inv(2 * a[1]) % P
+    else:
+        m = (b[1] - a[1]) * inv(b[0] - a[0]) % P
+    x = (m * m - a[0] - b[0]) % P
+    y = (m * (a[0] - x) - a[1]) % P
+    return (x, y)
+
+
+def scalar_mul(k, point=G):
+    result = None
+    addend = point
+    while k:
+        if k & 1:
+            result = point_add(result, addend)
+        addend = point_add(addend, addend)
+        k >>= 1
+    return result
+
+
+def lift_x(x):
+    if x >= P:
+        return None
+    y_sq = (pow(x, 3, P) + 7) % P
+    y = pow(y_sq, (P + 1) // 4, P)
+    if pow(y, 2, P) != y_sq:
+        return None
+    return (x, y if y % 2 == 0 else P - y)
+
+
+def tagged_hash(tag, data):
+    th = hashlib.sha256(tag.encode()).digest()
+    return hashlib.sha256(th + th + data).digest()
+
+
+def schnorr_sign(msg32, secret):
+    d0 = int.from_bytes(secret, "big")
+    if not (1 <= d0 < N):
+        raise ValueError("invalid secret key")
+    P_pub = scalar_mul(d0)
+    d = d0 if P_pub[1] % 2 == 0 else N - d0
+    t = (d ^ int.from_bytes(tagged_hash("BIP0340/aux", os.urandom(32)), "big"))
+    t_bytes = t.to_bytes(32, "big")
+    rand = tagged_hash(
+        "BIP0340/nonce",
+        t_bytes + P_pub[0].to_bytes(32, "big") + msg32,
+    )
+    k0 = int.from_bytes(rand, "big") % N
+    if k0 == 0:
+        raise ValueError("nonce gen failed")
+    R = scalar_mul(k0)
+    k = k0 if R[1] % 2 == 0 else N - k0
+    e = int.from_bytes(
+        tagged_hash(
+            "BIP0340/challenge",
+            R[0].to_bytes(32, "big") + P_pub[0].to_bytes(32, "big") + msg32,
+        ),
+        "big",
+    ) % N
+    s = (k + e * d) % N
+    return R[0].to_bytes(32, "big") + s.to_bytes(32, "big")
+
+
+def xonly_pubkey(secret):
+    d0 = int.from_bytes(secret, "big")
+    P_pub = scalar_mul(d0)
+    return P_pub[0].to_bytes(32, "big")
+
+
+# ── Build the malformed Kind-37195 event ───────────────────────────────
+secret = os.urandom(32)
+# Ensure 1 <= d < N
+while int.from_bytes(secret, "big") == 0 or int.from_bytes(secret, "big") >= N:
+    secret = os.urandom(32)
+
+pubkey = xonly_pubkey(secret).hex()
+created_at = int(time.time())
+kind = 37195
+tags = [
+    ["d", "fips-overlay-v1"],
+    ["app", "fips.nat.lab.v1"],
+]
+content = "this-is-not-a-valid-overlay-advert-{garbage}"
+
+# Nostr event id = sha256(json([0, pubkey, created_at, kind, tags, content]))
+serialized = json.dumps(
+    [0, pubkey, created_at, kind, tags, content],
+    separators=(",", ":"),
+    ensure_ascii=False,
+)
+event_id = hashlib.sha256(serialized.encode("utf-8")).digest()
+sig = schnorr_sign(event_id, secret).hex()
+
+event = {
+    "id": event_id.hex(),
+    "pubkey": pubkey,
+    "created_at": created_at,
+    "kind": kind,
+    "tags": tags,
+    "content": content,
+    "sig": sig,
+}
+
+msg = json.dumps(["EVENT", event])
+print(f"publishing malformed advert id={event['id']} pubkey={pubkey}")
+
+# ── Minimal stdlib WebSocket client (RFC 6455) ────────────────────────
+relay_host = sys.argv[1]
+relay_port = int(sys.argv[2])
+
+sock = socket.create_connection((relay_host, relay_port), timeout=10)
+key_b64 = base64.b64encode(os.urandom(16)).decode()
+handshake = (
+    f"GET / HTTP/1.1\r\n"
+    f"Host: {relay_host}:{relay_port}\r\n"
+    f"Upgrade: websocket\r\n"
+    f"Connection: Upgrade\r\n"
+    f"Sec-WebSocket-Key: {key_b64}\r\n"
+    f"Sec-WebSocket-Version: 13\r\n\r\n"
+)
+sock.sendall(handshake.encode())
+
+resp = b""
+sock.settimeout(5)
+while b"\r\n\r\n" not in resp:
+    chunk = sock.recv(4096)
+    if not chunk:
+        break
+    resp += chunk
+if b" 101 " not in resp.split(b"\r\n", 1)[0]:
+    print("websocket handshake failed:", resp[:200], file=sys.stderr)
+    raise SystemExit(2)
+
+# Build a single masked text frame (FIN=1, opcode=1).
+payload = msg.encode("utf-8")
+mask = os.urandom(4)
+masked = bytes(b ^ mask[i % 4] for i, b in enumerate(payload))
+
+frame = bytearray([0x81])  # FIN + text
+plen = len(payload)
+if plen < 126:
+    frame.append(0x80 | plen)
+elif plen < 65536:
+    frame.append(0x80 | 126)
+    frame += struct.pack("!H", plen)
+else:
+    frame.append(0x80 | 127)
+    frame += struct.pack("!Q", plen)
+frame += mask + masked
+sock.sendall(bytes(frame))
+
+# Read the relay's OK/NOTICE response (best-effort).
+sock.settimeout(3)
+try:
+    reply = sock.recv(4096)
+    print("relay reply:", reply[:200])
+except socket.timeout:
+    print("relay reply: <timeout — frame sent but no ack>")
+
+# Polite close (opcode 0x88 = close), then drop.
+try:
+    sock.sendall(bytes([0x88, 0x80]) + os.urandom(4))
+except OSError:
+    pass
+sock.close()
+print("malformed advert published")
+PY
+}
+
+assert_process_alive() {
+    local container="$1"
+    if ! docker exec "$container" pidof fips >/dev/null 2>&1; then
+        echo "fips daemon NOT running in $container after malformed advert" >&2
+        return 1
+    fi
+    echo "  $container: fips daemon still alive after malformed advert"
+}
+
+assert_no_panic() {
+    local container="$1"
+    local logs
+    logs="$(docker logs "$container" 2>&1 || true)"
+    if grep -Eq "panicked at|RUST_BACKTRACE|fatal runtime error" <<<"$logs"; then
+        echo "panic detected in $container logs" >&2
+        return 1
+    fi
+}
+
+run_test() {
+    echo "=== nostr-relay-test: phase 1 + 2 ==="
+    cleanup
+    "$GENERATE_SCRIPT" "$SCENARIO"
+
+    "${COMPOSE[@]}" --profile "$PROFILE" up -d --build --force-recreate
+
+    # Phase 1 + Phase 2 together: each side publishes its own advert,
+    # subscribes for the other's, then dials. Bidirectional success
+    # (peer count == 1 on both nodes) proves both directions of the
+    # publish/consume round-trip.
+    echo ""
+    echo "--- waiting for bidirectional advert observation + dial ---"
+    if ! wait_for_peers "$NODE_A" 1 60; then
+        dump_diagnostics
+        return 1
+    fi
+    if ! wait_for_peers "$NODE_B" 1 60; then
+        dump_diagnostics
+        return 1
+    fi
+
+    # shellcheck disable=SC1090
+    source "$NAT_DIR/generated-configs/$SCENARIO/npubs.env"
+    echo "  NPUB_A=$NPUB_A"
+    echo "  NPUB_B=$NPUB_B"
+
+    # Sanity: traffic actually flows (TUN-level reachability).
+    if ! docker exec "$NODE_A" ping6 -c 3 -W 5 "${NPUB_B}.fips" >/dev/null; then
+        echo "ping6 A->B failed" >&2
+        dump_diagnostics
+        return 1
+    fi
+    if ! docker exec "$NODE_B" ping6 -c 3 -W 5 "${NPUB_A}.fips" >/dev/null; then
+        echo "ping6 B->A failed" >&2
+        dump_diagnostics
+        return 1
+    fi
+
+    echo ""
+    echo "=== nostr-relay-test: phase 3 (malformed advert) ==="
+    publish_malformed_advert "$RELAY_HOST" "$RELAY_PORT"
+
+    # Give consumers a moment to ingest and reject.
+    sleep 5
+
+    assert_process_alive "$NODE_A" || { dump_diagnostics; return 1; }
+    assert_process_alive "$NODE_B" || { dump_diagnostics; return 1; }
+    assert_no_panic "$NODE_A"      || { dump_diagnostics; return 1; }
+    assert_no_panic "$NODE_B"      || { dump_diagnostics; return 1; }
+
+    # Existing peer link must still be healthy (consumer didn't tear
+    # down on a bad advert).
+    if ! docker exec "$NODE_A" ping6 -c 3 -W 5 "${NPUB_B}.fips" >/dev/null; then
+        echo "ping6 A->B failed AFTER malformed-advert injection" >&2
+        dump_diagnostics
+        return 1
+    fi
+
+    cleanup
+    echo "nostr-relay-test passed"
+}
+
+main() {
+    require_docker_daemon
+    require_test_image
+    run_test
+}
+
+main "$@"