chore: replace blocking semaphore with async version and reduce concurrency to 1 in RPC class

Add an optional `final` parameter (defaulting to True) to the `send_message` method in the `Bot` class, and pass it through to the underlying `self.rpc.send_message` call. This allows callers to control whether the message is marked as final when sent via RPC.

Makefile

@@ -5,7 +5,7 @@ APP=./example.py
 all: install run 
 
 install:
-	python3 -m venv .venv 
+	python3.12 -m venv .venv 
 	$(PIP) install -e .
 
 run:

README.md

@@ -1,125 +1,81 @@
-# Snekbot API
+# SnekBot: Your Instant Chat Companion
 
-This is the Snekbot API. This document describes how to create a bot responding to "hello", "bye" and "@username-of-bot".
+## Create Your Own Bot in Minutes
 
-## 5 minute tutorial
+### Overview
+SnekBot is designed for rapid deployment and customization, providing a fully asynchronous and production-ready chat bot solution. It is built to handle network issues effectively, ensuring a reliable user experience.
 
-Literally.
+### Prerequisites
+- Python 3.8 or higher
+- Basic understanding of Python programming
 
-### Installation
-#### Requirements:
-Python:
- - python3
- - python3-venv 
- - python3-pip
-Use apt or your package manager to install these packages. There is a big chance your system already has them.
+### Installation Instructions
 
-For Debian (Ubuntu): `sudo apt install python3 python3-venv python3-pip -y`
+#### 1. Prepare Your Environment
+```bash
+# For Ubuntu/Debian users:
+sudo apt install python3 python3-venv python3-pip -y
 
-#### Environment
- - `python3 -m venv venv`
- - `source venv/bin/activate`
- - `pip install git+https://molodetz.nl/retoor/snekbot.git`
+# Create a virtual environment for your bot
+python3 -m venv venv
+source venv/bin/activate
+```
 
-#### Create account
-Create regular user account for your bot. You need this later in your script.
-Make sure you have this information right now:
- - bot username 
- - bot password 
- - bot url (wss://your-snek-instance.com/rpc.ws)
+#### 2. Install SnekBot
+```bash
+pip install git+https://molodetz.nl/retoor/snekbot.git
+```
 
-#### Create a file 
-Open a file ending with the `.py` extension and paste this content. Replace the authentication details on the bottom lines with the one of the account you just created. 
+### Bot Development
+To create your bot, use the following template:
 
 ```python
 import asyncio
-
 from snekbot.bot import Bot
 
-
-class ExampleBot(Bot):
-
+class CustomSnekBot(Bot):
     async def on_join(self, channel_uid):
-        print(f"I joined!")
-        await self.send_message(
-                channel_uid, 
-                f"Hello, i'm actively part of the conversation in channel {channel_uid} now, you don't have to mention me anymore. "
-        )
-
-    async def on_leave(self, channel_uid):
-        print(f"I left!!")
-        await self.send_message(
-                channel_uid,
-                "I stop actively being part of the conversation now. Bye!"
-        )
-
-    async def on_ping(self,username, user_nick, channel_uid, message):
-        print(f"Ping from {user_nick} in channel {channel_uid}: {message}")
         await self.send_message(
             channel_uid,
-            "pong " + message
+            "Hello! I am here to assist you."
         )
 
-    async def on_own_message(self, data):
-        print(f"Received my own message: {data.message}")
-
-    async def on_mention(self, username, user_nick, channel_uid, message):
-
-        message = message[len(self.username) + 2 :]
-        print(f"Mention from {user_nick}: {message}")
-
-        if "source" in message:
-            with open(__file__) as f:
-                result = f.read()
-            result = result.replace(f'"{self.username}"', '"example username"')
-            result = result.replace(self.password, "example password")
-            result = (
-                "This is the actual source code running me now. Fresh from the bakery:\n\n```python\n"
-                + result
-                + "\n```"
-            )
-            await self.send_message(channel_uid, result)
-        else:
-            await self.send_message(channel_uid, f'Hey {user_nick}, Thanks for mentioning me "{message}".')
-
     async def on_message(self, sender_username, sender_nick, channel_uid, message):
-        print(f"Message  from {sender_nick}: {message}")
-        if not self.has_joined(channel_uid):
-            print(f"Probably not for me since i'm not mentioned and not joined yet")
-            return
         message = message.lower()
-        result = None
         if "hello" in message:
-            result = f"Hi @{sender_nick}"
+            await self.send_message(channel_uid, f"Greetings, {sender_nick}!")
         elif "bye" in message:
-            result = f"Bye @{sender_nick}"
+            await self.send_message(channel_uid, f"Goodbye, {sender_nick}!")
 
-        if result:
-            await self.send_message(channel_uid, result)
-
-
-bot = ExampleBot(url="ws://snek.molodetz.nl/rpc.ws", username="example", password="example")
+# Initialize your bot
+bot = CustomSnekBot(
+    url="wss://your-snek-instance.com/rpc.ws", 
+    username="your_bot_username", 
+    password="your_secure_password"
+)
 asyncio.run(bot.run())
 ```
 
-#### Run the bot
-Make sure you have (still) activated your virtual env.
+### Running Your Bot
 ```bash
-python [your-script].py
+python your_bot_script.py
 ```
-If you get the error 'python not found' or 'aiohttp not found', run `source .venv/bin/activate` again and run `python [your script].py` again. 
 
-#### Debugging
-Add `import logging` and `logging.BasicConfig(level=logging.DEBUG)`.
+### Event Handlers
+You can override the following event handlers:
+- `on_join`: Triggered when the bot joins a channel
+- `on_leave`: Triggered when the bot leaves a channel
+- `on_ping`: Responds to ping messages
+- `on_mention`: Handles direct mentions
+- `on_message`: Processes incoming messages
 
-#### Summary
-The `ExampleBot` class inherits from a base `Bot` class and implements several event handlers:
- - `on_join`: Sends a welcome message when the bot joins a channel.
- - `on_leave`: Sends a goodbye message when the bot leaves.
- - `on_ping`: Responds with "pong" when it receives a ping message.
- - `on_own_message`: Logs messages sent by the bot itself.
- - `on_mention`: Handles mentions; if "source" is in the message, it replies with its own source code, with sensitive data disguised.
- - `on_message`: Responds to "hello" and "bye" messages if the bot has joined the channel.
-The bot will be instantiated and runs asynchronously. It will survive server deploys and network outages. If such issue occurs, it will try to reconnect within a second like nothing happened. It's production ready. 
+### Additional Information
+- For detailed logging, include `logging.basicConfig(level=logging.DEBUG)` in your code.
+- The bot is designed to automatically reconnect in case of connection drops.
+- Feel free to customize the bot to meet your specific requirements.
 
+### Contribution Guidelines
+Contributions are welcome. Please submit pull requests for any enhancements or bug fixes.
 
+### License
+This project is licensed under the MIT License.

TODO.md

@@ -1,4 +0,0 @@
-# Todo's 
-
- - implement logging module instead of all print statements.
- - use asyncio processes instead of subprocess module processes.

example.py

@@ -9,28 +9,29 @@ from snekbot.bot import Bot
 class ExampleBot(Bot):
 
     async def on_join(self, channel_uid):
+        await super().on_join(channel_uid)
         print(f"I joined!")
+        channel = await self.get_channel(channel_uid)
         await self.send_message(
-                channel_uid, 
-                f"Hello, i'm actively part of the conversation in channel {channel_uid} now, you don't have to mention me anymore. "
+            channel_uid,
+            f"Hello, i'm actively part of the conversation in channel {channel['name']} now, you don't have to mention me anymore. ",
         )
 
     async def on_leave(self, channel_uid):
+        await super().on_leave(channel_uid)
         print(f"I left!!")
         await self.send_message(
-                channel_uid,
-                "I stop actively being part of the conversation now. Bye!"
+            channel_uid, "I stop actively being part of the conversation now. Bye!"
         )
 
-    async def on_ping(self,username, user_nick, channel_uid, message):
-        print(f"Ping from {user_nick} in channel {channel_uid}: {message}")
-        await self.send_message(
-            channel_uid,
-            "pong " + message
-        )
+    async def on_ping(self, username, user_nick, channel_uid, message):
+        channel = await self.get_channel(channel_uid)
+        print(f"Ping from {user_nick} in channel {channel['name']}: {message}")
+        await self.send_message(channel_uid, "pong " + message)
 
-    async def on_own_message(self, data):
-        print(f"Received my own message: {data.message}")
+    async def on_own_message(self, channel_uid, message):
+        channel = await self.get_channel(channel_uid)
+        print(f"Received my own message in channel {channel['name']}: {message}")
 
     async def on_mention(self, username, user_nick, channel_uid, message):
 
@@ -49,13 +50,16 @@ class ExampleBot(Bot):
             )
             await self.send_message(channel_uid, result)
         else:
-            await self.send_message(channel_uid, f'Hey {user_nick}, Thanks for mentioning me "{message}".')
+            await self.send_message(
+                channel_uid, f'Hey {user_nick}, Thanks for mentioning me "{message}".'
+            )
 
     async def on_message(self, sender_username, sender_nick, channel_uid, message):
         print(f"Message  from {sender_nick}: {message}")
         if not self.has_joined(channel_uid):
             print(f"Probably not for me since i'm not mentioned and not joined yet")
             return
+
         message = message.lower()
         result = None
         if "hello" in message:
@@ -67,5 +71,7 @@ class ExampleBot(Bot):
             await self.send_message(channel_uid, result)
 
 
-bot = ExampleBot(url="ws://snek.molodetz.nl/rpc.ws", username="example", password="xxxxxx")
+bot = ExampleBot(
+    url="ws://snek.molodetz.nl/rpc.ws", username="example", password="xxxxxx"
+)
 asyncio.run(bot.run())

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "snekbot"
-version = "1.0.0"
+version = "1.1.0"
 readme = "README.md"
 description = "Bot API for Snek chat"
 authors = [

src/snekbot.egg-info/PKG-INFO

@@ -1,6 +1,6 @@
-Metadata-Version: 2.2
+Metadata-Version: 2.4
 Name: snekbot
-Version: 1.0.0
+Version: 1.1.0
 Summary: Bot API for Snek chat
 Author-email: retoor <retoor@molodetz.nl>
 Keywords: chat,snek,molodetz,bot
@@ -8,129 +8,86 @@ Requires-Python: >=3
 Description-Content-Type: text/markdown
 License-File: LICENSE.txt
 Requires-Dist: aiohttp
+Dynamic: license-file
 
-# Snekbot API
+# SnekBot: Your Instant Chat Companion
 
-This is the Snekbot API. This document describes how to create a bot responding to "hello", "bye" and "@username-of-bot".
+## Create Your Own Bot in Minutes
 
-## 5 minute tutorial
+### Overview
+SnekBot is designed for rapid deployment and customization, providing a fully asynchronous and production-ready chat bot solution. It is built to handle network issues effectively, ensuring a reliable user experience.
 
-Literally.
+### Prerequisites
+- Python 3.8 or higher
+- Basic understanding of Python programming
 
-### Installation
-#### Requirements:
-Python:
- - python3
- - python3-venv 
- - python3-pip
-Use apt or your package manager to install these packages. There is a big chance your system already has them.
+### Installation Instructions
 
-For Debian (Ubuntu): `sudo apt install python3 python3-venv python3-pip -y`
+#### 1. Prepare Your Environment
+```bash
+# For Ubuntu/Debian users:
+sudo apt install python3 python3-venv python3-pip -y
 
-#### Environment
- - `python3 -m venv venv`
- - `source venv/bin/activate`
- - `pip install git+https://molodetz.nl/retoor/snekbot.git`
+# Create a virtual environment for your bot
+python3 -m venv venv
+source venv/bin/activate
+```
 
-#### Create account
-Create regular user account for your bot. You need this later in your script.
-Make sure you have this information right now:
- - bot username 
- - bot password 
- - bot url (wss://your-snek-instance.com/rpc.ws)
+#### 2. Install SnekBot
+```bash
+pip install git+https://molodetz.nl/retoor/snekbot.git
+```
 
-#### Create a file 
-Open a file ending with the `.py` extension and paste this content. Replace the authentication details on the bottom lines with the one of the account you just created. 
+### Bot Development
+To create your bot, use the following template:
 
 ```python
 import asyncio
-
 from snekbot.bot import Bot
 
-
-class ExampleBot(Bot):
-
+class CustomSnekBot(Bot):
     async def on_join(self, channel_uid):
-        print(f"I joined!")
-        await self.send_message(
-                channel_uid, 
-                f"Hello, i'm actively part of the conversation in channel {channel_uid} now, you don't have to mention me anymore. "
-        )
-
-    async def on_leave(self, channel_uid):
-        print(f"I left!!")
-        await self.send_message(
-                channel_uid,
-                "I stop actively being part of the conversation now. Bye!"
-        )
-
-    async def on_ping(self,username, user_nick, channel_uid, message):
-        print(f"Ping from {user_nick} in channel {channel_uid}: {message}")
         await self.send_message(
             channel_uid,
-            "pong " + message
+            "Hello! I am here to assist you."
         )
 
-    async def on_own_message(self, data):
-        print(f"Received my own message: {data.message}")
-
-    async def on_mention(self, username, user_nick, channel_uid, message):
-
-        message = message[len(self.username) + 2 :]
-        print(f"Mention from {user_nick}: {message}")
-
-        if "source" in message:
-            with open(__file__) as f:
-                result = f.read()
-            result = result.replace(f'"{self.username}"', '"example username"')
-            result = result.replace(self.password, "example password")
-            result = (
-                "This is the actual source code running me now. Fresh from the bakery:\n\n```python\n"
-                + result
-                + "\n```"
-            )
-            await self.send_message(channel_uid, result)
-        else:
-            await self.send_message(channel_uid, f'Hey {user_nick}, Thanks for mentioning me "{message}".')
-
     async def on_message(self, sender_username, sender_nick, channel_uid, message):
-        print(f"Message  from {sender_nick}: {message}")
-        if not self.has_joined(channel_uid):
-            print(f"Probably not for me since i'm not mentioned and not joined yet")
-            return
         message = message.lower()
-        result = None
         if "hello" in message:
-            result = f"Hi @{sender_nick}"
+            await self.send_message(channel_uid, f"Greetings, {sender_nick}!")
         elif "bye" in message:
-            result = f"Bye @{sender_nick}"
+            await self.send_message(channel_uid, f"Goodbye, {sender_nick}!")
 
-        if result:
-            await self.send_message(channel_uid, result)
-
-
-bot = ExampleBot(url="ws://snek.molodetz.nl/rpc.ws", username="example", password="example")
+# Initialize your bot
+bot = CustomSnekBot(
+    url="wss://your-snek-instance.com/rpc.ws", 
+    username="your_bot_username", 
+    password="your_secure_password"
+)
 asyncio.run(bot.run())
 ```
 
-#### Run the bot
-Make sure you have (still) activated your virtual env.
+### Running Your Bot
 ```bash
-python [your-script].py
+python your_bot_script.py
 ```
-If you get the error 'python not found' or 'aiohttp not found', run `source .venv/bin/activate` again and run `python [your script].py` again. 
 
-#### Debugging
-Add `import logging` and `logging.BasicConfig(level=logging.DEBUG)`.
+### Event Handlers
+You can override the following event handlers:
+- `on_join`: Triggered when the bot joins a channel
+- `on_leave`: Triggered when the bot leaves a channel
+- `on_ping`: Responds to ping messages
+- `on_mention`: Handles direct mentions
+- `on_message`: Processes incoming messages
 
-#### Summary
-The `ExampleBot` class inherits from a base `Bot` class and implements several event handlers:
- - `on_join`: Sends a welcome message when the bot joins a channel.
- - `on_leave`: Sends a goodbye message when the bot leaves.
- - `on_ping`: Responds with "pong" when it receives a ping message.
- - `on_own_message`: Logs messages sent by the bot itself.
- - `on_mention`: Handles mentions; if "source" is in the message, it replies with its own source code, with sensitive data disguised.
- - `on_message`: Responds to "hello" and "bye" messages if the bot has joined the channel.
-The bot will be instantiated and runs asynchronously. It will survive server deploys and network outages. If such issue occurs, it will try to reconnect within a second like nothing happened. It's production ready. 
+### Additional Information
+- For detailed logging, include `logging.basicConfig(level=logging.DEBUG)` in your code.
+- The bot is designed to automatically reconnect in case of connection drops.
+- Feel free to customize the bot to meet your specific requirements.
 
+### Contribution Guidelines
+Contributions are welcome. Please submit pull requests for any enhancements or bug fixes.
 
+### License
+This project is licensed under the MIT License.

src/snekbot/bot.py

@@ -12,15 +12,16 @@
 # MIT License
 
 import asyncio
+import logging
+import traceback
 
 import aiohttp
 
 from snekbot.rpc import RPC
 
-import logging
-
 logger = logging.getLogger("snekbot")
 
+
 class Bot:
 
     def __init__(self, username, password, url="wss://snek.molodetz.nl/rpc.ws"):
@@ -28,75 +29,162 @@ class Bot:
         self.username = username
         self.password = password
         self.user = None
-        self.channels = None
+        self._channels = None
         self.rpc = None
         self.ws = None
         self.joined = set()
+        self.semaphore = asyncio.Semaphore(1)
+
+    async def on_init(self):
+        logger.debug("Bot initialized.")
+
+    async def on_join(self, channel_uid):
+        self.joined.add(channel_uid)
+        logger.debug("Joined channel: " + channel_uid)
+
+    async def on_leave(self, channel_uid):
+        self.joined.remove(channel_uid)
+        logger.debug("Left channel: " + channel_uid)
+
+    async def on_mention(self, username, user_nick, channel_uid, message):
+        logger.debug("Received mention from " + username + ": " + message)
+
+    async def on_idle(self):
+        logger.debug("Bot is idle.")
+
+    async def on_ping(self, username, user_nick, channel_uid, message):
+        logger.debug("Received ping from " + username + ": " + message)
+
+    async def on_own_message(self, channel_uid, message):
+        logger.debug("Received own message: " + message)
+
+    async def on_message(self, username, user_nick, channel_uid, message):
+        logger.debug("Received message from " + username + ": " + message)
 
     async def run(self, reconnect=True):
+
         while True:
+
             try:
                 await self.run_once()
-            except Exception as ex:
-                print(ex)
+            except:
+                traceback.print_exc()
                 await asyncio.sleep(1)
+
             if not reconnect:
                 break
-    
+
     def has_joined(self, channel_uid):
         return channel_uid in self.joined
 
-    async def send_message(self, channel_uid, message):
-        await self.rpc.send_message(channel_uid, message)
+    async def send_message(self, channel_uid, message,final=True):
+        await self.rpc.send_message(channel_uid, message,final)
         return True
 
+    async def get_channel(self, channel_uid=None, refresh=False):
+        for channel in await self.get_channels(refresh):
+            if channel["uid"] == channel_uid:
+                return channel
+        if not refresh:
+            return await self.get_channel(channel_uid, True)
+
+    async def get_channels(self, refresh=False):
+        if refresh or not self._channels:
+            self._channels = await self.rpc.get_channels()
+        return self._channels
+
     async def run_once(self):
         async with aiohttp.ClientSession() as session:
             async with session.ws_connect(self.url) as ws:
+                is_initial = not self.ws 
+
                 self.ws = ws
-                self.rpc = RPC(ws)
-                rpc = self.rpc
-                success =  await (await rpc.login(self.username, self.password))()
-                print(success)
-                self.channels = await (await rpc.get_channels())()
-                for channel in self.channels:
-                    logger.debug("Found channel: " + channel["name"])
-                self.user = (await (await rpc.get_user(None))())
+                rpc = RPC(self.ws)
+                self.rpc = rpc
+
+                await rpc.login(self.username, self.password)
+                self.user = await rpc.get_user(None)
                 logger.debug("Logged in as: " + self.user["username"])
+
+                if is_initial:
+                    await self.on_init()
+
+                for channel in await self.get_channels():
+                    logger.debug("Found channel: " + channel["name"])
                 while True:
-                    try:
-                        try:
-                            await self.on_idle()
-                        except AttributeError:
-                            pass 
 
-                        data = await rpc.receive()
+                    await self.on_idle()
 
-                        try:
-                            message = data.message.strip()
-                        except AttributeError:
-                            continue
+                    message = None
+                    data = None
 
-                        if data.username == self.user['username']:
-                            await self.on_own_message(data.channel_uid, message)
-                        elif message.startswith("ping"):
-                            await self.on_ping(data.username, data.user_nick, data.channel_uid, data.message.lstrip("ping ").strip())
-                        elif any([
-                                "@" + self.user['nick'] + " join" in data.message,
-                                "@" + self.user['username'] + " join" in data.message]):
-                            self.joined.add(data.channel_uid)
-                            await self.on_join(data.channel_uid)
-                        elif any([
-                                "@" + self.user['nick'] + " leave" in data.message,
-                                "@" + self.user['username'] + " leave" in data.message]):
-                            self.joined.remove(data.channel_uid)   
-                            await self.on_leave(data.channel_uid)
-                        elif "@" + self.user['nick'] in data.message or "@" + self.user['username'] in data.message:
-                            await self.on_mention(data.username, data.user_nick, data.channel_uid, data.message)
-                        else:
-                            await self.on_message(data.username, data.user_nick, data.channel_uid, data.message)
-                    except AttributeError as ex:
-                         logger.exception(ex)
-                    except Exception as ex:
-                        logger.exception(ex)
-                     
+                    while True:
+                        async with self.semaphore:
+                            data = await rpc.receive()
+                            if not data:
+                                return  
+                          
+                            event = "?"
+                            try:
+                                event = data.event
+                            except AttributeError: 
+                                pass 
+                            
+                            try:
+                                message = data.message.strip()
+                                event = "message"
+                            except AttributeError:
+                                pass
+                                
+                            if event == "?":
+                                continue
+                            elif event == "message":
+                                if not data.is_final:
+                                    continue 
+                                break
+
+                            try:
+                                await getattr(self, "on_" + data.event)(**data.data)
+                            except AttributeError:
+                                logger.debug("Not implemented event: " + event)
+                            
+                    if data.username == self.user["username"]:
+                        await self.on_own_message(data.channel_uid, message)
+                    elif message.startswith("ping"):
+                        await self.on_ping(
+                            data.username,
+                            data.user_nick,
+                            data.channel_uid,
+                            data.message.lstrip("ping ").strip(),
+                        )
+                    elif any(
+                        [
+                            "@" + self.user["nick"] + " join" in data.message,
+                            "@" + self.user["username"] + " join" in data.message,
+                        ]
+                    ):
+                        await self.on_join(data.channel_uid)
+                    elif any(
+                        [
+                            "@" + self.user["nick"] + " leave" in data.message,
+                            "@" + self.user["username"] + " leave" in data.message,
+                        ]
+                    ):
+                        await self.on_leave(data.channel_uid)
+                    elif (
+                        "@" + self.user["nick"] in data.message
+                        or "@" + self.user["username"] in data.message
+                    ):
+                        await self.on_mention(
+                            data.username,
+                            data.user_nick,
+                            data.channel_uid,
+                            data.message,
+                        )
+                    else:
+                        await self.on_message(
+                            data.username,
+                            data.user_nick,
+                            data.channel_uid,
+                            data.message,
+                        )

src/snekbot/rpc.py

@@ -1,30 +1,29 @@
 # Written by retoor@molodetz.nl
 
-# This code defines an RPC class that allows asynchronous communication over websockets, 
+# This code defines an RPC class that allows asynchronous communication over websockets,
 # including command execution and handling of asynchronous responses using Python's asyncio and websockets library.
 
 # Uses aiohttp for asynchronous HTTP network communication.
 
 # MIT License Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-
+import asyncio
 import json
-import subprocess
+import logging
 import pathlib
+import subprocess
+import uuid
+import asyncio 
 import aiohttp
-import uuid 
-
-import logging 
 
 logger = logging.getLogger("snekbot.rpc")
 
+
 class RPC:
     class Response:
         def __init__(self, msg):
-            if isinstance(msg, list):
-                self.list = msg 
             self.__dict__.update(msg)
-        
+
         def __iter__(self):
             for k in self.__dict__.get("data", []):
                 yield k
@@ -38,93 +37,90 @@ class RPC:
                 return self.__dict__[name]
             except:
                 pass
-            return self.__dict__.get('data',{})[name]
+            return self.__dict__.get("data", {})[name]
 
         def __setitem__(self, name, value):
-            if not name in self.__dict__.get('data',{}):
+            if name not in self.__dict__.get("data", {}):
                 self.__dict__[name] = value
             else:
-                self.__dict__['data'][name] = value 
+                self.__dict__["data"][name] = value
 
         def __str__(self):
             return json.dumps(self.__dict__, default=str, indent=2)
 
     def __init__(self, ws):
         self.ws = ws
-        self.current_call_id = None 
-
-    async def echo(self, data):
-        logger.debug("Schedule for retry: " + str(data))
-        await self.ws.send_json(dict(method="echo",args=[data]))
+        self.current_call_id = None
+        self.queue = asyncio.Queue()
+        self.semaphore = asyncio.Semaphore(1)
 
     def __getattr__(self, name):
         async def method(*args, **kwargs):
+            no_response = kwargs.pop("_no_response", False)
             self.current_call_id = str(uuid.uuid4())
-            payload = dict(method=name, args=args, kwargs=kwargs, callId=self.current_call_id)
-            try:
-                await self.ws.send_json(payload)
-            except Exception as ex:
-                logger.exception(ex)
-             
-            async def returner():
-                while True: 
+            payload = {
+                "method": name,
+                "args": args,
+                "kwargs": kwargs,
+                "callId": self.current_call_id,
+            }
+            await self.ws.send_json(payload)
+
+            async def poller():
+                
+                while True:
                     response = await self.ws.receive()
                     data = response.json()
-                    if not data.get("callId") == self.current_call_id:
-                        await self.echo(data)
-                        continue
-                    return self.Response(data)
-            return returner 
+                    if data.get("callId") == self.current_call_id:
+                        self.current_call_id = None
+                        return self.Response(data)
+                    await self.queue.put(data)
+
+            if no_response:
+                return True
+            async with self.semaphore:
+                return await poller()
+
         return method
 
-    async def system(self, command):
-        if isinstance(command, str):
-            command = command.split(" ")
-
-        path = pathlib.Path("output.txt")
-
-        with path.open("w+") as f:
-            try:
-                subprocess.run(command, stderr=f, stdout=f)
-            except Exception as ex:
-                print("Error running command:", ex)
-                return f"Error: {ex}"
-
-        response = None
-
-        with path.open("r") as f:
-            response = f.read()
-
-        try:
-            path.unlink()
-        except Exception as ex:
-            logger.error(ex)
-
-        return response
-
-    async def receive(self):
+    async def receive(self): 
+        popped = []
+        while not self.queue.empty():
+            msg = await self.queue.get()
+            if self.current_call_id == msg.get("callId"):
+                self.current_call_id = None
+                return self.Response(msg)
+            popped.append(msg)
+        for m in popped:
+            await self.queue.put(m)
+        
         while True:
-            try:
-                msg = await self.ws.receive()
-            except Exception as ex:
-                logger.exception("Error while receiving:", ex)
-                break
-            if msg.type == aiohttp.WSMsgType.CLOSED:
-                raise Exception("WebSocket closed.")
-            elif msg.type == aiohttp.WSMsgType.ERROR:
-                raise Exception("WebSocket error:", msg)
-            elif msg.type == aiohttp.WSMsgType.TEXT:
-            
-                if self.current_call_id and not msg.json().get('callId') != self.current_call_id:
-                    await self.echo(msg.json())
-                    continue 
+            async with self.semaphore:
                 try:
-                    response = self.Response(msg.json())
-                    self.current_call_id = None
-                    return response
+                    msg = await self.ws.receive()
                 except Exception as ex:
-                    logger.exception(ex)
+                    logger.exception("Error while receiving:", ex)
+                    break
+                if msg.type == aiohttp.WSMsgType.CLOSED:
+                    logger.exception("WebSocket closed.")
+                    break
+                elif msg.type == aiohttp.WSMsgType.ERROR:
+                    logger.exception("WebSocket error.")
+                    break
+                elif msg.type == aiohttp.WSMsgType.TEXT:
+                    if (
+                        msg.json().get("callId") != self.current_call_id
+                    ):
+                        await self.queue.put(msg.json())
+                        continue
+                    try:
+                        response = self.Response(msg.json())
+                        self.current_call_id = None
+                        return response
+                    except Exception as ex:
+                        logger.exception(ex)
+                        break
+                else:
+                    logger.exception("Unexpected message type.")
                     break
-            else:
-                raise Exception("Unexpected message type.")
         return None