divorce
b735900f2e
ddat interop with dat js cable interop with cabal js ddat's frontend = dat-thang cable fe = cable-thang dillo support based on cel's dillo-dat bootstrap node xplatform support Signed-off-by: divo <418@cryspace.space>
40 lines
2.1 KiB
C
40 lines
2.1 KiB
C
#ifndef SLEEP_UTP_H
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#define SLEEP_UTP_H
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#include <stddef.h>
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#include <stdint.h>
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#include "dat_socket.h"
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#define SLEEP_UTP_MTU 1200u
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#define SLEEP_UTP_WINDOW 64u
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enum sleep_utp_state { SLEEP_UTP_CLOSED, SLEEP_UTP_SYN_SENT, SLEEP_UTP_SYN_RECV, SLEEP_UTP_CONNECTED, SLEEP_UTP_FIN_SENT, SLEEP_UTP_RESET };
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enum sleep_utp_packet_type { SLEEP_UTP_DATA, SLEEP_UTP_FIN, SLEEP_UTP_STATE, SLEEP_UTP_RESET_PACKET, SLEEP_UTP_SYN };
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typedef struct sleep_utp_packet { uint8_t type, version; uint16_t connection_id; uint32_t timestamp, timestamp_diff, window_size; uint16_t sequence, acknowledgement; uint32_t selective_ack; int has_selective_ack; const uint8_t *payload; size_t payload_len; } sleep_utp_packet_t;
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typedef struct sleep_utp_slot { uint16_t sequence; uint8_t data[SLEEP_UTP_MTU]; size_t length; uint64_t sent_at; unsigned retries; int used; } sleep_utp_slot_t;
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typedef struct sleep_utp {
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dat_socket_t socket;
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struct sockaddr_storage remote;
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socklen_t remote_len;
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uint16_t send_id, receive_id, sequence, acknowledgement;
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uint32_t receive_window, send_window;
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enum sleep_utp_state state;
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uint64_t retransmit_at;
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unsigned syn_retries;
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uint32_t congestion_window, slow_start_threshold;
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uint32_t round_trip_time, round_trip_variance;
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size_t bytes_in_flight;
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sleep_utp_slot_t unacked[SLEEP_UTP_WINDOW];
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sleep_utp_slot_t reorder[SLEEP_UTP_WINDOW];
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void *context;
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void (*on_data)(struct sleep_utp *, const uint8_t *, size_t);
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} sleep_utp_t;
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int sleep_utp_init(sleep_utp_t *utp, dat_socket_t udp_socket);
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int sleep_utp_connect(sleep_utp_t *utp, const struct sockaddr *remote, socklen_t remote_len);
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int sleep_utp_accept(sleep_utp_t *utp, const sleep_utp_packet_t *syn, const struct sockaddr *remote, socklen_t remote_len);
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int sleep_utp_packet_encode(const sleep_utp_packet_t *packet, uint8_t *out, size_t capacity, size_t *written);
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int sleep_utp_packet_decode(sleep_utp_packet_t *packet, const uint8_t *input, size_t input_len);
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int sleep_utp_input(sleep_utp_t *utp, const uint8_t *packet, size_t packet_len);
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int sleep_utp_send(sleep_utp_t *utp, const uint8_t *data, size_t length);
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int sleep_utp_tick(sleep_utp_t *utp, uint64_t now_ms);
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int sleep_utp_close(sleep_utp_t *utp);
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#endif
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