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# P2P-JAVA-PROJECT version 1 (Protocol for step 1)
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All messages begins with `P2P-JAVA-PROJECT VERSION 1.0\n` (this version of the protocol).
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## Client messages
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- `LIST\n`: ask the server to list files from server root directory
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- `DOWNLOAD\n<FILENAME>\n`: ask the server to download file <FILENAME> from server root directory. Only one filename is allowed per request.
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## Server responses
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- The response to `LIST` request is in the format `LIST\n<FILENAME 1>\n<FILENAME 2>\n[…]<LAST FILENAME>\n\n`
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- The response to `DOWNLOAD` request is `LOAD\n<FILESIZE (BYTES)>\n<CONTENT OF FILE>` or `NOT FOUND\n` if the file doesn't exists.
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- The server send a `PROTOCOL ERROR\n` message if it doesn't understands what the client sent.
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- The server send a `INTERNAL ERROR\n` message if it encounters an internal error.
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