Refactored packet API to support struct layer (using union to contain different types of encapsulation headers)

src/session/test/gtest_case_tcp_fast_open.cpp

@@ -309,6 +309,7 @@ TEST(CASE, TCP_FAST_OPEN)
 
     // C2S SYN Packet
     printf("\n=> Packet Parse: TCP C2S fast open packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)tcp_fast_open_pkt, sizeof(tcp_fast_open_pkt));
     printf("<= Packet Parse: done\n\n");