python 3.7+

Makefile

@@ -10,4 +10,7 @@ pub: build
 install:
 	pip install -e .[dev,pub]
 
-.PHONY: build clean pub install
+test-api:
+	docker run --rm -ti -p 4999:4999 python:3.7-slim bash -c "pip install announce_server==0.0.2rc2; pip install 'python-socketsio[asyncio_client]==5.0'; announce_server start_registry"
+
+.PHONY: build clean pub install test-api

README.md

@@ -73,8 +73,8 @@ To start the registry server with the default configuration, run:
 announce_server start_registry
 ```
 
-To start the registry server with a custom IP address, port number, heartbeat interval, and timeout, run:
+The full syntax is equivalent to:
 
 ```bash
-announce_server start_registry --address localhost --port 4998 --heartbeat_interval 10 --heartbeat_timeout 5
+announce_server start_registry --address 0.0.0.0 --port 4999 --heartbeat_interval 5 --heartbeat_timeout 3
 ```

setup.cfg

@@ -12,7 +12,6 @@ classifiers =
     Intended Audience :: Developers
     License :: OSI Approved :: MIT License
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
@@ -24,7 +23,7 @@ package_dir =
     = src
 packages = find:
 install_requires =
-    python-socketio[asyncio_client]
+    python-socketio[asyncio_client]~=5.0.0
 
 [options.packages.find]
 where = src

setup.py

@@ -7,5 +7,5 @@ setup(
         "setuptools_scm",
     ],
     use_scm_version=True,
-    python_requires=">=3.6",
+    python_requires=">=3.7",  # because of python-socketsio[asyncio_client]
 )

src/announce_server/server.py

@@ -137,10 +137,18 @@ def start_server(address, port, heartbeat_interval, heartbeat_timeout):
         The timeout for waiting for a response in seconds.
     """
     loop = asyncio.get_event_loop()
-    heartbeat_task = loop.create_task(
+    # Python 3.7+, coroutines only:
+    # heartbeat_task = loop.create_task(
+    #     heartbeat(sio, heartbeat_interval, heartbeat_timeout)
+    # )
+    # aiohttp_app = loop.create_task(web._run_app(app, host=address, port=port))
+    
+    # Python 3.6+ compatible. Supports any awaitable:
+    heartbeat_task = asyncio.ensure_future(
         heartbeat(sio, heartbeat_interval, heartbeat_timeout)
     )
-    aiohttp_app = loop.create_task(web._run_app(app, host=address, port=port))
+
+    aiohttp_app = asyncio.ensure_future(web._run_app(app, host=address, port=port))
 
     exit_handler = create_exit_handler(loop, heartbeat_task)
     signal.signal(signal.SIGINT, exit_handler)