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

src/session/test/gtest_timeout_tcp_handshake.cpp

@@ -59,6 +59,7 @@ TEST(TIMEOUT, TCP_TIMEOUT_HANDSHAKE)
 
     // S2C SYNACK Packet
     printf("\n=> Packet Parse: TCP S2C SYNACK packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)tcp_pkt2_s2c_syn_ack, sizeof(tcp_pkt2_s2c_syn_ack));
     printf("<= Packet Parse: done\n\n");