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zapret-lib,antidpi: optimizations

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bol-van
2026-01-15 23:30:55 +03:00
parent 87d2fcd5a1
commit 372c6748ca
2 changed files with 8 additions and 5 deletions
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4
lua/zapret-antidpi.lua
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@@ -1080,7 +1080,7 @@ function oob(ctx, desync)
local data = desync.reasm_data or desync.dis.payload
if not desync.arg.drop_ack and #data==0 then
DLOG("oob: sending empty ACK")
if not rawsend_dissect(desync.dis) then return end
if not rawsend_dissect(desync.dis,rawsend_opts_base(desync)) then return end
end
if #data>0 then
local oob = desync.arg.char or (desync.arg.byte and bu8(desync.arg.byte) or nil) or "\x00"
@@ -1107,7 +1107,7 @@ function oob(ctx, desync)
dis_oob.payload = string.sub(data, 1, urp-1) .. oob .. string.sub(data, urp)
dis_oob.tcp.th_flags = bitor(dis_oob.tcp.th_flags, TH_URG)
DLOG("oob: sending OOB")
if not rawsend_dissect_segmented(desync, dis_oob, desync.tcp_mss, desync_opts(desync)) then
if not rawsend_dissect_segmented(desync, dis_oob) then
instance_cutoff_shim(ctx, desync)
return
end

9
lua/zapret-lib.lua
View File

@@ -1069,10 +1069,13 @@ end
-- send dissect with tcp segmentation based on mss value. appply specified rawsend options.
function rawsend_dissect_segmented(desync, dis, mss, options)
dis = dis or desync.dis
local discopy = deepcopy(dis)
options = options or desync_opts(desync)
apply_fooling(desync, discopy, options and options.fooling)
if dis.tcp then
mss = mss or desync.tcp_mss
local extra_len = l3l4_extra_len(discopy)
if extra_len >= mss then return false end
local max_data = mss - extra_len
@@ -1114,13 +1117,13 @@ end
-- send specified payload based on existing L3/L4 headers in the dissect. add seq to tcp.th_seq.
function rawsend_payload_segmented(desync, payload, seq, options)
options = options or desync_opts(desync)
local dis = deepcopy(desync.dis)
-- save some cpu and ram
local dis = (payload or seq and seq~=0) and deepcopy(desync.dis) or desync.dis
if payload then dis.payload = payload end
if dis.tcp and seq then
dis.tcp.th_seq = dis.tcp.th_seq + seq
end
return rawsend_dissect_segmented(desync, dis, desync.tcp_mss, options)
return rawsend_dissect_segmented(desync, dis, nil, options)
end