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--- a/src/nemesis-proto_tcp.c
+++ b/src/nemesis-proto_tcp.c
@@ -16,7 +16,7 @@
FileData *ipod, FileData *tcpod, char *device)
{
int n;
- u_int32_t tcp_packetlen = 0, tcp_meta_packetlen = 0;
+ u_int32_t tcp_packetlen = 0, tcp_meta_packetlen = 0, tcp_headerlen = 0, ip_headerlen = 0;
static u_int8_t *pkt;
static int sockfd = -1;
struct libnet_link_int *l2 = NULL;
@@ -58,13 +58,20 @@
#endif
}
+ ip_headerlen = LIBNET_IP_H + ipod->file_s;
+ tcp_headerlen = LIBNET_TCP_H + tcpod->file_s;
+
tcp_packetlen = link_offset + LIBNET_IP_H + LIBNET_TCP_H + pd->file_s +
ipod->file_s + tcpod->file_s;
- tcp_meta_packetlen = tcp_packetlen - (link_offset + LIBNET_IP_H);
+ tcp_meta_packetlen = LIBNET_TCP_H + pd->file_s;
#ifdef DEBUG
+ printf("DEBUG: link offsetlength %u.\n", link_offset);
+ printf("DEBUG: IP header length %u.\n", ip_headerlen);
+ printf("DEBUG: TCP header length %u.\n", tcp_headerlen);
printf("DEBUG: TCP packet length %u.\n", tcp_packetlen);
+ printf("DEBUG: TCP meta length %u.\n", tcp_meta_packetlen);
printf("DEBUG: IP options size %u.\n", ipod->file_s);
printf("DEBUG: TCP options size %u.\n", tcpod->file_s);
printf("DEBUG: TCP payload size %u.\n", pd->file_s);
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