• Some previous students said that they sisn't get along well with the grading script using transport.write(), but some other students passed everything using transport.write(). There might be some tricky things going on in this part. Please be aware that there could be potentially some problems.

• dict_and_class.py: The use of Python data structures like dictionary and class.
• message_hint.py: An example showing how you could handle message elegantly with classes. Not necessarily implemented this way, message handlers could be integrated directly into your server-class; or you could do without any class. It is also doable if you don't use class at all.

• asyncio_syntax.py: asyncio basic syntax example.
• asyncio_basic.py: asyncio basic usage.
• asyncio_naive.py: another silly example.
• asyncio_task.py: an example using tasks.
• (*) asyncio_advanced.py: more advanced usage that is not really required for this project.
• (*) asyncio_context.py: more advanced usage, about keeping coroutine-local context, not required.
• echo_server.py and echo_client.py
  • usage: python echo_server.py Hello and then python echo_client.py
  • could be other names for the server, I am including the name option as a must so as to show you how to use the command line arguments (required for this project).
  • they are the real starter hints for this project.

• flooding_hint.py: the idea of the floading algorithm in general, but shouldn't be how it is implemented in the end, please consider asyncio.
• More hints: you can consider using timestamp to tell if a message is already received & processed by the current server!
• How to store the messages received? Completely up to you. e.g. a dictionary, a list, another object of your self-defined class, etc.

-aiohttp_example.py: the example of an aiohttp simplest illustration. the setting of ssl is to ensure it works on your laptop as well.

• json_hint.py: if you are not familiar with json format (will need it for the map API part), please check it out here.
• Wait I mean you don't need to really store a json file... that is slightly more than needed for this project.

• Check the sample grading scripts
• Obviously it is not the real grading scripts, but the components I use to check for the correctness are almost the same (scoring function is not the same --- the version you see here is obviously an intermediate version, and in the current version, you should expect all outputs be "True")
• Do not ask for your friends' code from previous quarters, we are changing the test cases.
• Be sure to implement whatever the spec requests.
• An important suggestion: please avoid using json file / txt file as configuration file! If you want to put your API keys into a separated file, try using config.py to hold it! Also, if you put your log file into a folder, please write the logic of creating that folder as well!
• Only if when you put your server.py under the sample submission folder, and directly set it to run, without any additional action required, your script is safe to submit.
• Please design your own test cases using the sample grading script we offer you. The existing samples for now are too naive.