#define NET_PacketSize 1024
#define NET_Ephemeral 0xFFFFFFFFFFFFFFFFull

////////////////////////////////////////////////////////////
//~ Opaque types

Struct(NET_PipeHandle) { u64 v; };

#define NET_IsPipeNil(h) ((h).v == 0)

////////////////////////////////////////////////////////////
//~ Key types

Struct(NET_Key)
{
  u8 addr[32];
};

#define NET_NilKey ((NET_Key) { 0 })
#define NET_IsKeyNil(k) (MatchStructZero(&k))

////////////////////////////////////////////////////////////
//~ Send types

Enum(NET_SendFlag)
{
  NET_SendFlag_None = 0,

  // Raw messages send unreliably and immediately
  // NOTE: Raw message data exceeding packet size will drop
  NET_SendFlag_Raw  = (1 << 0),
};

////////////////////////////////////////////////////////////
//~ Message types

Struct(NET_Msg)
{
  NET_Msg *next;
  NET_Msg *prev;

  NET_Key sender;
  String data;
};

Struct(NET_MsgList)
{
  i64 count;
  NET_Msg *first;
  NET_Msg *last;
};

////////////////////////////////////////////////////////////
//~ Stat types

Struct(NET_PipeStatistics)
{
  i64 total_bytes_sent;
  i64 total_bytes_received;
};

////////////////////////////////////////////////////////////
//~ @hookdecl Bootstrap

void NET_Bootstrap(void);

////////////////////////////////////////////////////////////
//~ @hookdecl Net ops

NET_Key NET_KeyFromString(String host, String port);
String NET_StringFromKey(Arena *arena, NET_Key key);
b32 NET_MatchKey(NET_Key a, NET_Key b);
u64 NET_HashFromKey(NET_Key key);

NET_PipeHandle NET_AcquirePipe(void);

void NET_Listen(NET_PipeHandle pipe_handle, u64 port);

NET_MsgList NET_Swap(Arena *arena, NET_PipeHandle pipe_handle);
void NET_Send(NET_PipeHandle pipe_handle, NET_Key dst, String data, NET_SendFlag flags);

NET_PipeStatistics NET_StatsFromPipe(NET_PipeHandle pipe_handle);