frame.h for the core 'frames' thingy

src/wire/frame.h

@@ -0,0 +1,42 @@
+// frame.h
+// Defines "frames", the unit of content inside a packet.
+// Frames know nothing about transport - QUIC and raw modes only differ in packet headers, not the contents.
+// Note: Pointers in a parsed frame borrow from the packet buffer.
+
+#ifndef BRAVAIS_FRAME_H
+#define BRAVAIS_FRAME_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef enum {
+    BRAVAIS_FRAME_TYPE_PADDING = 0x00,
+    BRAVAIS_FRAME_TYPE_CRYPTO = 0x06, // QUIC crypto frame
+    BRAVAIS_FRAME_TYPE_DATAGRAM = 0x31, // QUIC datagram frame
+} bravais_frame_type_t;
+
+// Handshake bytes at a byte offset in the handshake stream. Offset + Length makes the fragmentation across datagrams to happen naturally.
+typedef struct {
+    uint64_t offset;
+    const uint8_t* data;
+    size_t dataLen;
+} bravais_crypto_frame_t;
+
+// One tunneled IP packet
+typedef struct {
+    const uint8_t* data;
+    size_t dataLen;
+} bravais_datagram_frame_t;
+
+typedef struct {
+    bravais_frame_type_t type;
+    union {
+        size_t paddingLen; // For PADDING frames, the length of the padding, a consequtive run of PAdDING bytes (parsed as a single frame)
+        bravais_crypto_frame_t crypto;
+        bravais_datagram_frame_t datagram;
+    };
+} bravais_frame_t;
+
+// TODO: Functions or something
+
+#endif // BRAVAIS_FRAME_H