simplify echo.py

internal_filesystem/apps/com.example.btcticker/assets/echo.py

@@ -1,31 +1,13 @@
-import sys
 import ssl
-
-# ruff: noqa: E402
-sys.path.insert(0, ".")
 import aiohttp
 import asyncio
 
-try:
-    URL = sys.argv[1]  # expects a websocket echo server
-except Exception:
-    # URL = "ws://echo.websocket.events" # also works
-    URL = "wss://echo.websocket.events"
-
-
-sslctx = False
-
-if URL.startswith("wss:"):
-    try:
-        sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
-        sslctx.verify_mode = ssl.CERT_NONE
-        #sslctx.verify_mode = ssl.CERT_REQUIRED # doesn't work because OSError: (-30336, 'MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED') 
-    except Exception:
-        pass
-
+sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
+sslctx.verify_mode = ssl.CERT_NONE
+#sslctx.verify_mode = ssl.CERT_REQUIRED # doesn't work because OSError: (-30336, 'MBEDTLS_ERR_SSL_CA_CHAIN_REQUIRED') 
 
 async def ws_test_echo(session):
-    async with session.ws_connect(URL, ssl=sslctx) as ws:
+    async with session.ws_connect("wss://echo.websocket.events", ssl=sslctx) as ws:
         await ws.send_str("hello world!\r\n")
         async for msg in ws:
             if msg.type == aiohttp.WSMsgType.TEXT:
@@ -35,11 +17,8 @@ async def ws_test_echo(session):
             await ws.send_str("close\r\n")
         await ws.close()
 
-
 async def main():
     async with aiohttp.ClientSession() as session:
         await ws_test_echo(session)
 
-
-if __name__ == "__main__":
-    asyncio.run(main())
+asyncio.run(main())