1 files changed, 35 insertions, 0 deletions
diff --git a/src/quic_header.h b/src/quic_header.h
new file mode 100644
index 0000000..34a7cd1
--- /dev/null
+++ b/src/quic_header.h
@@ -0,0 +1,35 @@
+#pragma once
+
+#define QUIC_IS_LONG_HEADER(c) (c & 0x80)
+#define QUIC_IS_FIXED_BIT(c)   (c & 0x40)
+
+#define QUIC_PKT_TYPE_INITIAL   0x00
+#define QUIC_PKT_TYPE_0RTT      0x01
+#define QUIC_PKT_TYPE_HANDSHAKE 0x02
+#define QUIC_PKT_TYPE_RETRY     0x03
+
+// https://www.rfc-editor.org/rfc/rfc9000.html#name-long-header-packets 
+struct quic_long_header{
+    unsigned char type_specific_bit:4;
+    unsigned char packet_type:2;
+    unsigned char fixed_bit:1;
+    unsigned char header_form:1;
+    unsigned int version;
+}__attribute__((packed));
+
+// https://www.rfc-editor.org/rfc/rfc9000.html#name-initial-packet
+struct quic_initial_pkt_header{
+    unsigned char packet_number_length:2;
+    unsigned char reserved_bits:2;
+    unsigned char packet_type:2;
+    unsigned char fixed_bit:1;
+    unsigned char header_form:1;
+    unsigned int version;
+}__attribute__((packed));
+
+struct quic_short_header{
+    unsigned char toto:5;
+    unsigned char spin_bit:1;
+    unsigned char fixed_bit:1;
+    unsigned char header_form:1;
+}__attribute__((packed));
+\ No newline at end of file