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

src/session/test/gtest_timeout_udp_data.cpp

@@ -58,6 +58,7 @@ TEST(TIMEOUT, UDP_TIMEOUT_DATA1)
 
     // C2S REQ Packet
     printf("\n=> Packet Parse: UDP C2S REQ packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)udp_pkt1_dns_req, sizeof(udp_pkt1_dns_req));
     printf("<= Packet Parse: done\n\n");
 
@@ -94,6 +95,7 @@ TEST(TIMEOUT, UDP_TIMEOUT_DATA2)
 
     // C2S REQ Packet
     printf("\n=> Packet Parse: UDP C2S REQ packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)udp_pkt1_dns_req, sizeof(udp_pkt1_dns_req));
     printf("<= Packet Parse: done\n\n");
 
@@ -105,6 +107,7 @@ TEST(TIMEOUT, UDP_TIMEOUT_DATA2)
 
     // S2C RESP Packet
     printf("\n=> Packet Parse: UDP S2C RESP packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)udp_pkt2_dns_resp, sizeof(udp_pkt2_dns_resp));
     printf("<= Packet Parse: done\n\n");