TWSD-637, Enabling "slb direct fwd" will result in failure to reply SYN ACK

Review Request #909 — Created June 5, 2025 and submitted — Latest diff uploaded

mingji
APV10
rel_apv_10_7
TWSD-637
jasonchang, kevin.poh, timsu

When enabling slb directfwd on, the second SYN/ACK will be dropped if we send 2 continuous SYN.

This issue was fixed in version 10.4(bug 136449, revision 37227)

  1. write a raw socket of client and server to handle 2 continuous SYN packet without RST
  2. check if the second SYN/ACK is dropped by APV
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