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zapret-lib: seq compare functions

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bol-van
2025-12-15 11:31:51 +03:00
parent dffba7cd13
commit 5cb96559d0
2 changed files with 26 additions and 2 deletions
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25
lua/zapret-lib.lua
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@@ -303,8 +303,31 @@ end
function pos_str(desync, pos)
return pos.mode..pos_get(desync, pos.mode)
end
-- sequence comparision functions. they work only within 2G interval
-- seq1>=seq2
function seq_ge(seq1, seq2)
return 0==bitand(u32add(seq1, -seq2), 0x80000000)
end
-- seq1>seq2
function seq_gt(seq1, seq2)
return seq1~=seq2 and seq_ge(seq1, seq2)
end
-- seq1<seq2
function seq_lt(seq1, seq2)
return 0~=bitand(u32add(seq1, -seq2), 0x80000000)
end
-- seq1<=seq2
function seq_le(seq1, seq2)
return seq1==seq2 or 0~=bitand(u32add(seq1, -seq2), 0x80000000)
end
-- seq_low<=seq<=seq_hi
function seq_within(seq, seq_low, seq_hi)
return seq_ge(seq, seq_low) and seq_le(seq, seq_hi)
end
function is_retransmission(desync)
return desync.track and desync.track.pos.direct.tcp and 0==bitand(u32add(desync.track.pos.direct.tcp.uppos_prev, -desync.track.pos.direct.tcp.pos), 0x80000000)
return desync.track and desync.track.pos.direct.tcp and seq_ge(desync.track.pos.direct.tcp.uppos_prev, desync.track.pos.direct.tcp.pos)
end
-- prepare standard rawsend options from desync