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Maximum segment size fixes (#25)

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* Fixed MSS sent in SYN and SYN-ACK

* Fixed tests
This commit is contained in:
ddirect
2026-01-25 07:37:17 +02:00
committed by GitHub
parent 7edaea1093
commit 91fea9ae58
5 changed files with 11 additions and 6 deletions
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internet/stack-ethernet.go
+2 -1
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@@ -108,8 +108,9 @@ func (ls *StackEthernet) Encapsulate(carrierData []byte, offsetToIP, offsetToFra
// For IP: offsetToIP=14, offsetToFrame=14
// For ARP: offsetToIP=-1, offsetToFrame=14 (but ARP ignores offsetToIP)
// Clip carrierData to MTU to prevent writes beyond MTU limit.
offsetToFrame += 14
mtuLimit := offsetToFrame + int(mtu)
h, n, err = ls.handlers.encapsulateAny(carrierData[:mtuLimit], offsetToFrame+14, offsetToFrame+14)
h, n, err = ls.handlers.encapsulateAny(carrierData[:mtuLimit], offsetToFrame, offsetToFrame)
if n == 0 {
return n, err
}