feat(tests): add live subprocess integration test suite for services

Spins up each service's server.py in a real subprocess via a free ephemeral
port (PORT env var), connects with real protocol clients, and asserts both
correct protocol behavior and RFC 5424 log output.

- 44 live tests across 10 services: http, ftp, smtp, redis, mqtt,
  mysql, postgres, mongodb, pop3, imap
- Shared conftest.py: _ServiceProcess (bg reader thread + queue),
  free_port, live_service fixture, assert_rfc5424 helper
- PORT env var added to all 10 targeted server.py templates
- New pytest marker `live`; excluded from default addopts run
- requirements-live-tests.txt: flask, twisted + protocol clients

pyproject.toml

@@ -43,9 +43,11 @@ decnet = "decnet.cli:app"
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
-addopts = "-m 'not fuzz' -v -q -x -n logical"
+addopts = "-m 'not fuzz and not live' -v -q -x -n logical"
 markers = [
     "fuzz: hypothesis-based fuzz tests (slow, run with -m fuzz or -m '' for all)",
+    "live: live subprocess service tests (run with -m live)",
+    "live_docker: live Docker container tests (requires DECNET_LIVE_DOCKER=1)",
 ]
 filterwarnings = [
     "ignore::pytest.PytestUnhandledThreadExceptionWarning",

requirements-live-tests.txt

@@ -0,0 +1,8 @@
+requests
+redis
+pymysql
+psycopg2-binary
+paho-mqtt
+pymongo
+flask
+twisted

templates/ftp/server.py

@@ -18,6 +18,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME = os.environ.get("NODE_NAME", "ftpserver")
 SERVICE_NAME   = "ftp"
 LOG_TARGET = os.environ.get("LOG_TARGET", "")
+PORT = int(os.environ.get("PORT", "21"))
 BANNER = os.environ.get("FTP_BANNER", "220 (vsFTPd 3.0.3)")
 
 def _log(event_type: str, severity: int = 6, **kwargs) -> None:
@@ -71,6 +72,6 @@ class ServerFTPFactory(FTPFactory):
 
 if __name__ == "__main__":
     twisted_log.startLogging(sys.stdout)
-    _log("startup", msg=f"FTP server starting as {NODE_NAME} on port 21")
+    _log("startup", msg=f"FTP server starting as {NODE_NAME} on port {PORT}")
-    reactor.listenTCP(21, ServerFTPFactory())
+    reactor.listenTCP(PORT, ServerFTPFactory())
     reactor.run()

templates/http/server.py

@@ -10,11 +10,13 @@ import os
 from pathlib import Path
 
 from flask import Flask, request, send_from_directory
+from werkzeug.serving import make_server, WSGIRequestHandler
 from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 
 NODE_NAME     = os.environ.get("NODE_NAME", "webserver")
 SERVICE_NAME   = "http"
 LOG_TARGET    = os.environ.get("LOG_TARGET", "")
+PORT          = int(os.environ.get("PORT", "80"))
 SERVER_HEADER = os.environ.get("SERVER_HEADER", "Apache/2.4.54 (Debian)")
 RESPONSE_CODE = int(os.environ.get("RESPONSE_CODE", "403"))
 FAKE_APP      = os.environ.get("FAKE_APP", "")
@@ -111,6 +113,13 @@ def catch_all(path):
     return body, RESPONSE_CODE, headers
 
 
+class _SilentHandler(WSGIRequestHandler):
+    """Suppress Werkzeug's Server header so Flask's after_request is the sole source."""
+    def version_string(self) -> str:
+        return ""
+
+
 if __name__ == "__main__":
     _log("startup", msg=f"HTTP server starting as {NODE_NAME}")
-    app.run(host="0.0.0.0", port=80, debug=False)  # nosec B104
+    srv = make_server("0.0.0.0", PORT, app, request_handler=_SilentHandler)  # nosec B104
+    srv.serve_forever()

templates/imap/server.py

@@ -17,6 +17,7 @@ from decnet_logging import SEVERITY_WARNING, syslog_line, write_syslog_file, for
 NODE_NAME   = os.environ.get("NODE_NAME", "mailserver")
 SERVICE_NAME = "imap"
 LOG_TARGET  = os.environ.get("LOG_TARGET", "")
+PORT        = int(os.environ.get("PORT", "143"))
 IMAP_BANNER = os.environ.get("IMAP_BANNER", f"* OK Dovecot ready.\r\n")
 _RAW_USERS  = os.environ.get("IMAP_USERS", "admin:admin123,root:toor,mail:mail,user:user")
 
@@ -532,7 +533,7 @@ class IMAPProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"IMAP server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(IMAPProtocol, "0.0.0.0", 143)  # nosec B104
+    server = await loop.create_server(IMAPProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/mongodb/server.py

@@ -14,6 +14,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME = os.environ.get("NODE_NAME", "mongodb")
 SERVICE_NAME   = "mongodb"
 LOG_TARGET = os.environ.get("LOG_TARGET", "")
+PORT = int(os.environ.get("PORT", "27017"))
 
 # Minimal BSON helpers
 def _bson_str(key: str, val: str) -> bytes:
@@ -118,7 +119,7 @@ class MongoDBProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"MongoDB server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(MongoDBProtocol, "0.0.0.0", 27017)  # nosec B104
+    server = await loop.create_server(MongoDBProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/mqtt/server.py

@@ -17,6 +17,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME = os.environ.get("NODE_NAME", "mqtt-broker")
 SERVICE_NAME   = "mqtt"
 LOG_TARGET = os.environ.get("LOG_TARGET", "")
+PORT = int(os.environ.get("PORT", "1883"))
 MQTT_ACCEPT_ALL = os.environ.get("MQTT_ACCEPT_ALL", "1") == "1"
 MQTT_PERSONA = os.environ.get("MQTT_PERSONA", "water_plant")
 MQTT_CUSTOM_TOPICS = os.environ.get("MQTT_CUSTOM_TOPICS", "")
@@ -264,7 +265,7 @@ class MQTTProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"MQTT server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(MQTTProtocol, "0.0.0.0", 1883)  # nosec B104
+    server = await loop.create_server(MQTTProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/mysql/server.py

@@ -14,6 +14,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME     = os.environ.get("NODE_NAME", "dbserver")
 SERVICE_NAME   = "mysql"
 LOG_TARGET    = os.environ.get("LOG_TARGET", "")
+PORT          = int(os.environ.get("PORT", "3306"))
 _MYSQL_VER    = os.environ.get("MYSQL_VERSION", "5.7.38-log")
 
 # Minimal MySQL server greeting (protocol v10) — version string is configurable
@@ -102,7 +103,7 @@ class MySQLProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"MySQL server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(MySQLProtocol, "0.0.0.0", 3306)  # nosec B104
+    server = await loop.create_server(MySQLProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/pop3/server.py

@@ -16,6 +16,7 @@ from decnet_logging import SEVERITY_WARNING, syslog_line, write_syslog_file, for
 NODE_NAME    = os.environ.get("NODE_NAME", "mailserver")
 SERVICE_NAME  = "pop3"
 LOG_TARGET   = os.environ.get("LOG_TARGET", "")
+PORT         = int(os.environ.get("PORT", "110"))
 POP3_BANNER  = os.environ.get("POP3_BANNER", f"+OK {NODE_NAME} Dovecot POP3 ready.")
 _RAW_USERS   = os.environ.get("IMAP_USERS", "admin:admin123,root:toor,mail:mail,user:user")
 
@@ -405,7 +406,7 @@ class POP3Protocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"POP3 server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(POP3Protocol, "0.0.0.0", 110)  # nosec B104
+    server = await loop.create_server(POP3Protocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/postgres/server.py

@@ -14,6 +14,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME = os.environ.get("NODE_NAME", "pgserver")
 SERVICE_NAME   = "postgres"
 LOG_TARGET = os.environ.get("LOG_TARGET", "")
+PORT = int(os.environ.get("PORT", "5432"))
 def _error_response(message: str) -> bytes:
     body = b"S" + b"FATAL\x00" + b"M" + message.encode() + b"\x00\x00"
     return b"E" + struct.pack(">I", len(body) + 4) + body
@@ -110,7 +111,7 @@ class PostgresProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"PostgreSQL server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(PostgresProtocol, "0.0.0.0", 5432)  # nosec B104
+    server = await loop.create_server(PostgresProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/redis/server.py

@@ -12,6 +12,7 @@ from decnet_logging import syslog_line, write_syslog_file, forward_syslog
 NODE_NAME    = os.environ.get("NODE_NAME", "cache-server")
 SERVICE_NAME   = "redis"
 LOG_TARGET   = os.environ.get("LOG_TARGET", "")
+PORT         = int(os.environ.get("PORT", "6379"))
 _REDIS_VER   = os.environ.get("REDIS_VERSION", "7.2.7")
 _REDIS_OS    = os.environ.get("REDIS_OS", "Linux 5.15.0")
 
@@ -185,7 +186,7 @@ class RedisProtocol(asyncio.Protocol):
 async def main():
     _log("startup", msg=f"Redis server starting as {NODE_NAME}")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(RedisProtocol, "0.0.0.0", 6379)  # nosec B104
+    server = await loop.create_server(RedisProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

templates/smtp/server.py

@@ -28,6 +28,7 @@ from decnet_logging import SEVERITY_WARNING, syslog_line, write_syslog_file, for
 NODE_NAME   = os.environ.get("NODE_NAME", "mailserver")
 SERVICE_NAME = "smtp"
 LOG_TARGET  = os.environ.get("LOG_TARGET", "")
+PORT        = int(os.environ.get("PORT", "25"))
 OPEN_RELAY  = os.environ.get("SMTP_OPEN_RELAY", "0").strip() == "1"
 
 _SMTP_BANNER = os.environ.get("SMTP_BANNER", f"220 {NODE_NAME} ESMTP Postfix (Debian/GNU)")
@@ -245,7 +246,7 @@ async def main():
     mode = "open-relay" if OPEN_RELAY else "credential-harvester"
     _log("startup", msg=f"SMTP server starting as {NODE_NAME} ({mode})")
     loop = asyncio.get_running_loop()
-    server = await loop.create_server(SMTPProtocol, "0.0.0.0", 25)  # nosec B104
+    server = await loop.create_server(SMTPProtocol, "0.0.0.0", PORT)  # nosec B104
     async with server:
         await server.serve_forever()
 

tests/live/conftest.py

@@ -0,0 +1,160 @@
+"""
+Shared fixtures for live subprocess service tests.
+
+Each fixture starts the real server.py in a subprocess, captures its stdout
+(RFC 5424 syslog lines) via a background reader thread, polls the port for
+readiness, yields (port, log_drain_fn), then tears down.
+"""
+
+import os
+import queue
+import re
+import socket
+import subprocess
+import sys
+import threading
+import time
+from collections.abc import Generator
+from pathlib import Path
+
+import pytest
+
+_REPO_ROOT = Path(__file__).parent.parent.parent
+_TEMPLATES = _REPO_ROOT / "templates"
+
+# Prefer the project venv's Python (has Flask, Twisted, etc.) over system Python
+_VENV_PYTHON = _REPO_ROOT / ".venv" / "bin" / "python"
+_PYTHON = str(_VENV_PYTHON) if _VENV_PYTHON.exists() else sys.executable
+
+# RFC 5424: <PRI>1 TIMESTAMP HOSTNAME APP-NAME - MSGID [SD] MSG?
+# Use search (not match) so lines prefixed by Twisted timestamps are handled.
+_RFC5424_RE = re.compile(r"<\d+>1 \S+ \S+ \S+ - \S+ ")
+
+
+def _free_port() -> int:
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.bind(("127.0.0.1", 0))
+        return s.getsockname()[1]
+
+
+def _wait_for_port(port: int, timeout: float = 8.0) -> bool:
+    deadline = time.monotonic() + timeout
+    while time.monotonic() < deadline:
+        try:
+            socket.create_connection(("127.0.0.1", port), timeout=0.1).close()
+            return True
+        except OSError:
+            time.sleep(0.05)
+    return False
+
+
+def _drain(q: queue.Queue, timeout: float = 2.0) -> list[str]:
+    """Drain all lines from the log queue within *timeout* seconds."""
+    lines: list[str] = []
+    deadline = time.monotonic() + timeout
+    while time.monotonic() < deadline:
+        try:
+            lines.append(q.get(timeout=max(0.01, deadline - time.monotonic())))
+        except queue.Empty:
+            break
+    return lines
+
+
+def assert_rfc5424(
+    lines: list[str],
+    *,
+    service: str | None = None,
+    event_type: str | None = None,
+    **fields: str,
+) -> str:
+    """
+    Assert that at least one line in *lines* is a valid RFC 5424 log entry
+    matching the given criteria. Returns the first matching line.
+    """
+    for line in lines:
+        if not _RFC5424_RE.search(line):
+            continue
+        if service and f" {service} " not in line:
+            continue
+        if event_type and event_type not in line:
+            continue
+        if all(f'{k}="{v}"' in line or f"{k}={v}" in line for k, v in fields.items()):
+            return line
+    criteria = {"service": service, "event_type": event_type, **fields}
+    raise AssertionError(
+        f"No RFC 5424 line matching {criteria!r} found among {len(lines)} lines:\n"
+        + "\n".join(f"  {l!r}" for l in lines[:20])
+    )
+
+
+class _ServiceProcess:
+    """Manages a live service subprocess and its stdout log queue."""
+
+    def __init__(self, service: str, port: int):
+        template_dir = _TEMPLATES / service
+        env = {
+            **os.environ,
+            "NODE_NAME": "test-node",
+            "PORT": str(port),
+            "PYTHONPATH": str(template_dir),
+            "LOG_TARGET": "",
+        }
+        self._proc = subprocess.Popen(
+            [_PYTHON, str(template_dir / "server.py")],
+            cwd=str(template_dir),
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+            env=env,
+            text=True,
+        )
+        self._q: queue.Queue = queue.Queue()
+        self._reader = threading.Thread(target=self._read_loop, daemon=True)
+        self._reader.start()
+
+    def _read_loop(self) -> None:
+        assert self._proc.stdout is not None
+        for line in self._proc.stdout:
+            self._q.put(line.rstrip("\n"))
+
+    def drain(self, timeout: float = 2.0) -> list[str]:
+        return _drain(self._q, timeout)
+
+    def stop(self) -> None:
+        self._proc.terminate()
+        try:
+            self._proc.wait(timeout=3)
+        except subprocess.TimeoutExpired:
+            self._proc.kill()
+            self._proc.wait()
+
+
+@pytest.fixture
+def live_service() -> Generator:
+    """
+    Factory fixture: call live_service(service_name) to start a server.
+
+    Usage::
+
+        def test_foo(live_service):
+            port, drain = live_service("redis")
+            # connect to 127.0.0.1:port ...
+            lines = drain()
+            assert_rfc5424(lines, service="redis", event_type="auth")
+    """
+    started: list[_ServiceProcess] = []
+
+    def _start(service: str) -> tuple[int, callable]:
+        port = _free_port()
+        svc = _ServiceProcess(service, port)
+        started.append(svc)
+        if not _wait_for_port(port):
+            svc.stop()
+            pytest.fail(f"Service '{service}' did not bind to port {port} within 8s")
+        # Flush startup noise before the test begins
+        svc.drain(timeout=0.3)
+        return port, svc.drain
+
+    yield _start
+
+    for svc in started:
+        svc.stop()

tests/live/test_ftp_live.py

@@ -0,0 +1,39 @@
+import ftplib
+
+import pytest
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestFTPLive:
+    def test_banner_received(self, live_service):
+        port, drain = live_service("ftp")
+        ftp = ftplib.FTP()
+        ftp.connect("127.0.0.1", port, timeout=5)
+        welcome = ftp.getwelcome()
+        ftp.close()
+        assert "220" in welcome or "vsFTPd" in welcome or len(welcome) > 0
+
+    def test_login_logged(self, live_service):
+        port, drain = live_service("ftp")
+        ftp = ftplib.FTP()
+        ftp.connect("127.0.0.1", port, timeout=5)
+        try:
+            ftp.login("admin", "hunter2")
+        except ftplib.all_errors:
+            pass
+        finally:
+            ftp.close()
+        lines = drain()
+        assert_rfc5424(lines, service="ftp")
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("ftp")
+        ftp = ftplib.FTP()
+        ftp.connect("127.0.0.1", port, timeout=5)
+        ftp.close()
+        lines = drain()
+        # At least one RFC 5424 line from the ftp service
+        rfc_lines = [l for l in lines if "<" in l and ">1 " in l and "ftp" in l]
+        assert rfc_lines, f"No ftp RFC 5424 lines found. stdout:\n" + "\n".join(lines[:15])

tests/live/test_http_live.py

@@ -0,0 +1,41 @@
+import pytest
+import requests
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestHTTPLive:
+    def test_get_request_logged(self, live_service):
+        port, drain = live_service("http")
+        resp = requests.get(f"http://127.0.0.1:{port}/admin", timeout=5)
+        assert resp.status_code == 403
+        lines = drain()
+        assert_rfc5424(lines, service="http", event_type="request")
+
+    def test_server_header_set(self, live_service):
+        port, drain = live_service("http")
+        resp = requests.get(f"http://127.0.0.1:{port}/", timeout=5)
+        assert "Server" in resp.headers
+        assert resp.headers["Server"] != ""
+
+    def test_post_body_logged(self, live_service):
+        port, drain = live_service("http")
+        requests.post(
+            f"http://127.0.0.1:{port}/login",
+            data={"username": "admin", "password": "secret"},
+            timeout=5,
+        )
+        lines = drain()
+        # body field present in log line
+        assert any("body=" in l for l in lines if "request" in l), (
+            f"Expected 'body=' in request log line. Got:\n" + "\n".join(lines[:10])
+        )
+
+    def test_method_and_path_in_log(self, live_service):
+        port, drain = live_service("http")
+        requests.get(f"http://127.0.0.1:{port}/secret/file.txt", timeout=5)
+        lines = drain()
+        matched = assert_rfc5424(lines, service="http", event_type="request")
+        assert "GET" in matched or 'method="GET"' in matched
+        assert "/secret/file.txt" in matched or 'path="/secret/file.txt"' in matched

tests/live/test_imap_live.py

@@ -0,0 +1,80 @@
+import imaplib
+
+import pytest
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestIMAPLive:
+    def test_banner_received(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        welcome = imap.welcome.decode()
+        imap.logout()
+        assert "OK" in welcome
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        imap.logout()
+        lines = drain()
+        assert_rfc5424(lines, service="imap", event_type="connect")
+
+    def test_login_logged(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        try:
+            imap.login("admin", "wrongpass")
+        except imaplib.IMAP4.error:
+            pass
+        lines = drain()
+        try:
+            imap.logout()
+        except Exception:
+            pass
+        lines += drain()
+        assert_rfc5424(lines, service="imap", event_type="auth")
+
+    def test_auth_success_logged(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        imap.login("admin", "admin123")  # valid cred from IMAP_USERS default
+        lines = drain()
+        imap.logout()
+        lines += drain()
+        matched = assert_rfc5424(lines, service="imap", event_type="auth")
+        assert "success" in matched, f"Expected auth success in log. Got:\n{matched!r}"
+
+    def test_auth_fail_logged(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        try:
+            imap.login("hacker", "crackedpassword")
+        except imaplib.IMAP4.error:
+            pass  # expected
+        lines = drain()
+        try:
+            imap.logout()
+        except Exception:
+            pass
+        lines += drain()
+        matched = assert_rfc5424(lines, service="imap", event_type="auth")
+        assert "failed" in matched, f"Expected auth failure in log. Got:\n{matched!r}"
+
+    def test_select_inbox_after_login(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        imap.login("admin", "admin123")
+        status, data = imap.select("INBOX")
+        imap.logout()
+        assert status == "OK", f"SELECT INBOX failed: {data}"
+
+    def test_capability_command(self, live_service):
+        port, drain = live_service("imap")
+        imap = imaplib.IMAP4("127.0.0.1", port)
+        status, caps = imap.capability()
+        imap.logout()
+        assert status == "OK"
+        cap_str = b" ".join(caps).decode()
+        assert "IMAP4rev1" in cap_str

tests/live/test_mongodb_live.py

@@ -0,0 +1,70 @@
+import pytest
+import pymongo
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestMongoDBLive:
+    def test_connect_succeeds(self, live_service):
+        port, drain = live_service("mongodb")
+        client = pymongo.MongoClient(
+            f"mongodb://127.0.0.1:{port}/",
+            serverSelectionTimeoutMS=5000,
+            connectTimeoutMS=5000,
+        )
+        # ismaster is handled — should not raise
+        client.admin.command("ismaster")
+        client.close()
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("mongodb")
+        client = pymongo.MongoClient(
+            f"mongodb://127.0.0.1:{port}/",
+            serverSelectionTimeoutMS=5000,
+            connectTimeoutMS=5000,
+        )
+        try:
+            client.admin.command("ismaster")
+        except Exception:
+            pass
+        finally:
+            client.close()
+        lines = drain()
+        assert_rfc5424(lines, service="mongodb", event_type="connect")
+
+    def test_message_logged(self, live_service):
+        port, drain = live_service("mongodb")
+        client = pymongo.MongoClient(
+            f"mongodb://127.0.0.1:{port}/",
+            serverSelectionTimeoutMS=5000,
+            connectTimeoutMS=5000,
+        )
+        try:
+            client.admin.command("ismaster")
+        except Exception:
+            pass
+        finally:
+            client.close()
+        lines = drain()
+        assert_rfc5424(lines, service="mongodb", event_type="message")
+
+    def test_list_databases(self, live_service):
+        port, drain = live_service("mongodb")
+        client = pymongo.MongoClient(
+            f"mongodb://127.0.0.1:{port}/",
+            serverSelectionTimeoutMS=5000,
+            connectTimeoutMS=5000,
+        )
+        try:
+            # list_database_names triggers OP_MSG
+            client.list_database_names()
+        except Exception:
+            pass
+        finally:
+            client.close()
+        lines = drain()
+        # At least one message was exchanged
+        assert any("mongodb" in l for l in lines), (
+            "Expected at least one mongodb log line"
+        )

tests/live/test_mqtt_live.py

@@ -0,0 +1,63 @@
+import time
+
+import pytest
+import paho.mqtt.client as mqtt
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestMQTTLive:
+    def test_connect_accepted(self, live_service):
+        port, drain = live_service("mqtt")
+        connected = []
+        client = mqtt.Client(client_id="test-scanner")
+        client.on_connect = lambda c, u, f, rc: connected.append(rc)
+        client.connect("127.0.0.1", port, keepalive=5)
+        client.loop_start()
+        deadline = time.monotonic() + 5
+        while not connected and time.monotonic() < deadline:
+            time.sleep(0.05)
+        client.loop_stop()
+        client.disconnect()
+        assert connected and connected[0] == 0, f"Expected CONNACK rc=0, got {connected}"
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("mqtt")
+        client = mqtt.Client(client_id="hax0r")
+        client.connect("127.0.0.1", port, keepalive=5)
+        client.loop_start()
+        time.sleep(0.3)
+        client.loop_stop()
+        client.disconnect()
+        lines = drain()
+        assert_rfc5424(lines, service="mqtt", event_type="auth")
+
+    def test_client_id_in_log(self, live_service):
+        port, drain = live_service("mqtt")
+        client = mqtt.Client(client_id="evil-scanner-9000")
+        client.connect("127.0.0.1", port, keepalive=5)
+        client.loop_start()
+        time.sleep(0.3)
+        client.loop_stop()
+        client.disconnect()
+        lines = drain()
+        matched = assert_rfc5424(lines, service="mqtt", event_type="auth")
+        assert "evil-scanner-9000" in matched, (
+            f"Expected client_id in log line. Got:\n{matched!r}"
+        )
+
+    def test_subscribe_logged(self, live_service):
+        port, drain = live_service("mqtt")
+        subscribed = []
+        client = mqtt.Client(client_id="sub-test")
+        client.on_subscribe = lambda c, u, mid, qos: subscribed.append(mid)
+        client.connect("127.0.0.1", port, keepalive=5)
+        client.loop_start()
+        time.sleep(0.2)
+        client.subscribe("plant/#")
+        time.sleep(0.3)
+        client.loop_stop()
+        client.disconnect()
+        lines = drain()
+        assert_rfc5424(lines, service="mqtt", event_type="subscribe")

tests/live/test_mysql_live.py

@@ -0,0 +1,65 @@
+import pytest
+import pymysql
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestMySQLLive:
+    def test_handshake_received(self, live_service):
+        port, drain = live_service("mysql")
+        # Honeypot sends MySQL greeting then denies auth — OperationalError expected
+        try:
+            pymysql.connect(
+                host="127.0.0.1",
+                port=port,
+                user="root",
+                password="password",
+                connect_timeout=5,
+            )
+        except pymysql.err.OperationalError:
+            pass  # expected: Access denied
+
+    def test_auth_logged(self, live_service):
+        port, drain = live_service("mysql")
+        try:
+            pymysql.connect(
+                host="127.0.0.1",
+                port=port,
+                user="admin",
+                password="hunter2",
+                connect_timeout=5,
+            )
+        except pymysql.err.OperationalError:
+            pass
+        lines = drain()
+        assert_rfc5424(lines, service="mysql", event_type="auth")
+
+    def test_username_in_log(self, live_service):
+        port, drain = live_service("mysql")
+        try:
+            pymysql.connect(
+                host="127.0.0.1",
+                port=port,
+                user="dbhacker",
+                password="letmein",
+                connect_timeout=5,
+            )
+        except pymysql.err.OperationalError:
+            pass
+        lines = drain()
+        matched = assert_rfc5424(lines, service="mysql", event_type="auth")
+        assert "dbhacker" in matched, (
+            f"Expected username in log line. Got:\n{matched!r}"
+        )
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("mysql")
+        try:
+            pymysql.connect(
+                host="127.0.0.1", port=port, user="x", password="y", connect_timeout=5
+            )
+        except pymysql.err.OperationalError:
+            pass
+        lines = drain()
+        assert_rfc5424(lines, service="mysql", event_type="connect")

tests/live/test_pop3_live.py

@@ -0,0 +1,58 @@
+import poplib
+
+import pytest
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestPOP3Live:
+    def test_banner_received(self, live_service):
+        port, drain = live_service("pop3")
+        pop = poplib.POP3("127.0.0.1", port)
+        welcome = pop.getwelcome().decode()
+        pop.quit()
+        assert "+OK" in welcome
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("pop3")
+        pop = poplib.POP3("127.0.0.1", port)
+        pop.quit()
+        lines = drain()
+        assert_rfc5424(lines, service="pop3", event_type="connect")
+
+    def test_user_command_logged(self, live_service):
+        port, drain = live_service("pop3")
+        pop = poplib.POP3("127.0.0.1", port)
+        pop.user("admin")
+        pop.quit()
+        lines = drain()
+        assert_rfc5424(lines, service="pop3", event_type="command")
+
+    def test_auth_success_logged(self, live_service):
+        port, drain = live_service("pop3")
+        pop = poplib.POP3("127.0.0.1", port)
+        pop.user("admin")
+        pop.pass_("admin123")  # valid cred from IMAP_USERS default
+        lines = drain()
+        pop.quit()
+        lines += drain()
+        matched = assert_rfc5424(lines, service="pop3", event_type="auth")
+        assert "success" in matched, f"Expected auth success in log. Got:\n{matched!r}"
+
+    def test_auth_fail_logged(self, live_service):
+        port, drain = live_service("pop3")
+        pop = poplib.POP3("127.0.0.1", port)
+        pop.user("root")
+        try:
+            pop.pass_("wrongpassword")
+        except poplib.error_proto:
+            pass  # expected: -ERR Authentication failed
+        lines = drain()
+        try:
+            pop.quit()
+        except Exception:
+            pass
+        lines += drain()
+        matched = assert_rfc5424(lines, service="pop3", event_type="auth")
+        assert "failed" in matched, f"Expected auth failure in log. Got:\n{matched!r}"

tests/live/test_postgres_live.py

@@ -0,0 +1,75 @@
+import pytest
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestPostgresLive:
+    def test_handshake_received(self, live_service):
+        port, drain = live_service("postgres")
+        import psycopg2
+        try:
+            psycopg2.connect(
+                host="127.0.0.1",
+                port=port,
+                user="admin",
+                password="password",
+                dbname="production",
+                connect_timeout=5,
+            )
+        except psycopg2.OperationalError:
+            pass  # expected: honeypot rejects auth
+
+    def test_startup_logged(self, live_service):
+        port, drain = live_service("postgres")
+        import psycopg2
+        try:
+            psycopg2.connect(
+                host="127.0.0.1",
+                port=port,
+                user="postgres",
+                password="secret",
+                dbname="postgres",
+                connect_timeout=5,
+            )
+        except psycopg2.OperationalError:
+            pass
+        lines = drain()
+        assert_rfc5424(lines, service="postgres", event_type="startup")
+
+    def test_username_in_log(self, live_service):
+        port, drain = live_service("postgres")
+        import psycopg2
+        try:
+            psycopg2.connect(
+                host="127.0.0.1",
+                port=port,
+                user="dbattacker",
+                password="cracked",
+                dbname="secrets",
+                connect_timeout=5,
+            )
+        except psycopg2.OperationalError:
+            pass
+        lines = drain()
+        matched = assert_rfc5424(lines, service="postgres", event_type="startup")
+        assert "dbattacker" in matched, (
+            f"Expected username in log line. Got:\n{matched!r}"
+        )
+
+    def test_auth_hash_logged(self, live_service):
+        port, drain = live_service("postgres")
+        import psycopg2
+        try:
+            psycopg2.connect(
+                host="127.0.0.1",
+                port=port,
+                user="root",
+                password="toor",
+                dbname="prod",
+                connect_timeout=5,
+            )
+        except psycopg2.OperationalError:
+            pass
+        lines = drain()
+        assert_rfc5424(lines, service="postgres", event_type="auth")

tests/live/test_redis_live.py

@@ -0,0 +1,44 @@
+import pytest
+import redis
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestRedisLive:
+    def test_ping_responds(self, live_service):
+        port, drain = live_service("redis")
+        r = redis.Redis(host="127.0.0.1", port=port, socket_timeout=5)
+        assert r.ping() is True
+
+    def test_connect_logged(self, live_service):
+        port, drain = live_service("redis")
+        r = redis.Redis(host="127.0.0.1", port=port, socket_timeout=5)
+        r.ping()
+        lines = drain()
+        assert_rfc5424(lines, service="redis", event_type="connect")
+
+    def test_auth_logged(self, live_service):
+        port, drain = live_service("redis")
+        r = redis.Redis(
+            host="127.0.0.1", port=port, password="wrongpassword", socket_timeout=5
+        )
+        try:
+            r.ping()
+        except Exception:
+            pass
+        lines = drain()
+        assert_rfc5424(lines, service="redis", event_type="auth")
+
+    def test_command_logged(self, live_service):
+        port, drain = live_service("redis")
+        r = redis.Redis(host="127.0.0.1", port=port, socket_timeout=5)
+        r.execute_command("KEYS", "*")
+        lines = drain()
+        assert_rfc5424(lines, service="redis", event_type="command")
+
+    def test_keys_returns_bait_data(self, live_service):
+        port, drain = live_service("redis")
+        r = redis.Redis(host="127.0.0.1", port=port, socket_timeout=5)
+        keys = r.keys("*")
+        assert len(keys) > 0, "Expected bait keys in fake store"

tests/live/test_smtp_live.py

@@ -0,0 +1,39 @@
+import smtplib
+
+import pytest
+
+from tests.live.conftest import assert_rfc5424
+
+
+@pytest.mark.live
+class TestSMTPLive:
+    def test_banner_received(self, live_service):
+        port, drain = live_service("smtp")
+        with smtplib.SMTP("127.0.0.1", port, timeout=5) as s:
+            code, msg = s.ehlo("test.example.com")
+        assert code == 250
+
+    def test_ehlo_logged(self, live_service):
+        port, drain = live_service("smtp")
+        with smtplib.SMTP("127.0.0.1", port, timeout=5) as s:
+            s.ehlo("attacker.example.com")
+        lines = drain()
+        assert_rfc5424(lines, service="smtp", event_type="ehlo")
+
+    def test_auth_attempt_logged(self, live_service):
+        port, drain = live_service("smtp")
+        with smtplib.SMTP("127.0.0.1", port, timeout=5) as s:
+            s.ehlo("attacker.example.com")
+            try:
+                s.login("admin", "password123")
+            except smtplib.SMTPAuthenticationError:
+                pass  # expected — honeypot rejects auth
+        lines = drain()
+        assert_rfc5424(lines, service="smtp", event_type="auth_attempt")
+
+    def test_connect_disconnect_logged(self, live_service):
+        port, drain = live_service("smtp")
+        with smtplib.SMTP("127.0.0.1", port, timeout=5) as s:
+            s.ehlo("scanner.example.com")
+        lines = drain()
+        assert_rfc5424(lines, service="smtp", event_type="connect")