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protocol.md

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+# Protocol
+
+// Handshake or encryption setup here
+1. Client sends request for file
+2. Server answers with error or how many packets to expect
+3. Client ack
+4. Server sends Packets with Sync to keep track
+5. Server sends Sync End Packet
+// LOOP
+6. If Packets were lost client sends request to resend specific Sync Packets
+7. Server sends Packets 
+// LOOP END
+8. If Client has all packets, or retries has exceeded limit. Client sends Ack Packet for last Sync
+9. Client and Server "close" / forget the connection
+
+## Header
+4 Byte Header Length | 4 Byte Request Flag (Request, Pte, Ack, File, End, Resend) | 4 Byte Sync | 4 Byte Data Length | x Byte Data
+
+### Data
+
+Request Data = UTF-8 File Path / File Lookup
+
+Packets to expect (PTE) = uint32 little endian Number of Packets to expect
+
+Ack = uint32 little endian Sync number to Acknowledge
+
+File = Raw file bytes
+
+End = uint32 little endian Sync number to Acknowledge
+
+Resend = uint32 little endian Sync number to Resend