C++ (Cpp) packet_tcp_options_len 예제들

예제 #1

파일: run_packet.c 프로젝트: Moddus/packetdrill

/* How many bytes should we tack onto the script packet to account for
 * the actual TCP options we did see?
 */
static int tcp_options_allowance(const struct packet *actual_packet,
				 const struct packet *script_packet)
{
	if (script_packet->flags & FLAG_OPTIONS_NOCHECK)
		return packet_tcp_options_len(actual_packet);
	else
		return 0;
}

예제 #2

파일: packet_to_string.c 프로젝트: jta/packetdrill

/* Print a string representation of the TCP packet:
 *  direction opt_ip_info flags seq ack window tcp_options
 */
static int tcp_packet_to_string(FILE *s, struct packet *packet,
				enum dump_format_t format, char **error)
{
	int result = STATUS_OK;       /* return value */

	if ((format == DUMP_FULL) || (format == DUMP_VERBOSE)) {
		endpoints_to_string(s, packet);
		fputc(' ', s);
	}


	/* We print flags in the same order as tcpdump 4.1.1. */
	if (packet->tcp->fin)
		fputc('F', s);
	if (packet->tcp->syn)
		fputc('S', s);
	if (packet->tcp->rst)
		fputc('R', s);
	if (packet->tcp->psh)
		fputc('P', s);
	if (packet->tcp->ack)
		fputc('.', s);
	if (packet->tcp->urg)
		fputc('U', s);
	if (packet->tcp->ece)
		fputc('E', s);   /* ECN *E*cho sent (ECN) */
	if (packet->tcp->cwr)
		fputc('W', s);   /* Congestion *W*indow reduced (ECN) */

	fprintf(s, " %u:%u(%u) ",
		ntohl(packet->tcp->seq),
		ntohl(packet->tcp->seq) + packet_payload_len(packet),
		packet_payload_len(packet));

	if (packet->tcp->ack)
		fprintf(s, "ack %u ", ntohl(packet->tcp->ack_seq));

	if (!(packet->flags & FLAG_WIN_NOCHECK))
		fprintf(s, "win %u ", ntohs(packet->tcp->window));

	if (packet_tcp_options_len(packet) > 0) {
		char *tcp_options = NULL;
		if (tcp_options_to_string(packet, &tcp_options, error))
			result = STATUS_ERR;
		else
			fprintf(s, "<%s>", tcp_options);
	}

	if (format == DUMP_VERBOSE)
		packet_buffer_to_string(s, packet);

	return result;
}