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44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
#pragma once
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#include <stdint.h>
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#include <time.h>
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#define CTRACK_T_SYN 60
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#define CTRACK_T_FIN 60
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#define CTRACK_T_EST 300
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#define CTRACK_T_UDP 60
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// SYN - SYN or SYN/ACK received
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// ESTABLISHED - any except SYN or SYN/ACK received
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// FIN - FIN or RST received
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typedef enum {SYN=0, ESTABLISHED, FIN} t_connstate;
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typedef struct
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{
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uint64_t pcounter; // packet counter
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uint64_t pdcounter; // data packet counter (with payload)
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uint64_t pbcounter; // transferred byte counter. includes retransmissions. it's not the same as relative seq.
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uint32_t ip6flow;
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// tcp only state, not used in udp
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uint32_t pos; // seq_last+payload, ack_last+payload
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uint32_t uppos; // max seen position. useful to detect retransmissions
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uint32_t uppos_prev; // previous max seen position. useful to detect retransmissions
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uint32_t seq_last; // last seen seq and ack
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uint32_t seq0; // starting seq and ack
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uint16_t winsize; // last seen window size
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uint16_t mss;
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uint32_t winsize_calc; // calculated window size
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uint8_t scale; // last seen window scale factor
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bool rseq_over_2G;
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} t_ctrack_position;
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typedef struct
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{
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struct timespec t_last;
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t_connstate state;
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t_ctrack_position client, server;
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uint8_t ipproto;
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}
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t_ctrack_positions;
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