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+# Chatty
+The idea is the following:
+- tcp server that you can send messages to
+- history upon connecting
+- date of messages sent
+- client for reading the messages and sending them at the same time
+- rooms
+- encryption
+- authentication
+
+## client
+- [ ] BUG: text is not appearing after typing
+- [ ] BUG: when connecting two clients of the same account
+- [ ] BUG: wrapping does not work and displays nothing if there is no screen space
+- [ ] BUG: reconnect does not work when server does not know id
+- [ ] TODO: Convert tabs to spaces
+- [ ] BUG: when using lots of markup characters
+- [ ] TODO: Newline support
+    - [ ] resizable box
+
+## server
+- [ ] check that fds arena does not overflow
+    - free clients which disconnected and use free list to give them space
+- [ ] check if when sending and the client is offline (due to connection loss) what happens
+- [ ] timeout on recv?
+- [ ] use threads to handle clients/ timeout when receiving because a client could theoretically
+  stall the entire server.
+- [ ] do not crash on errors from clients
+    - implement error message?
+    - timeout on recv with setsockopt
+- [ ] theoretically two clients can connect at the same time.  The uni/bi connections should be
+      negotiated.
+
+## common
+- [ ] use IP address / domain
+- [ ] chat history
+- [ ] rooms
+- [ ] compression
+
+## Protocol
+- see `protocol.h` for more info
+- The null terminator must be sent with the string.
+- The text can be arbitrary length
+
+### To Read
+#### C Programming
+- https://www.youtube.com/watch?v=wvtFGa6XJDU
+- https://nullprogram.com/blog/2023/02/11/
+- https://nullprogram.com/blog/2023/02/13/
+- https://nullprogram.com/blog/2023/10/08/
+#### Encryption w/ Compression
+- https://en.wikipedia.org/wiki/BREACH
+- https://en.wikipedia.org/wiki/CRIME
+- https://crypto.stackexchange.com/questions/2283/crypto-compression-algorithms
+- openpgp https://www.rfc-editor.org/rfc/rfc4880
+- https://security.stackexchange.com/questions/19911/crime-how-to-beat-the-beast-successor
+- https://blog.qualys.com/product-tech/2012/09/14/crime-information-leakage-attack-against-ssltls
+- Algorithms:
+    *Symmetric*
+    - AESI
+    - Blowfish
+    - Twofish
+    - Rivest Cipher (RC4)
+    *Assymetric*
+    - Data Encryption Standard (DES)
+    - ECDSA
+    - RSA
+    - Diffie-Hellman
+    - PGP
+    _Hash_
+    - Deflate
+    - Huffman Coding
+    - LZ77
+    Other
+    - ChaCha20-Poly1305
+    - AES(-GCM)