TapTap
e16db56580
Implement rsync-style delta transfer using rolling checksums (Adler-32 + xxHash32). When a file exists on both sides but has changed, only the changed blocks are transmitted instead of the entire file. - New status codes: STATUS_DELTA_SIGNATURE, STATUS_DELTA_DATA - Protocol version bumped to 1.2.0 - Server generates block signature, client computes delta - Auto-fallback to whole-file when delta >= 70% of file size - Works with zstd compression on delta stream - Configurable block size (default 8KB, --delta-block flag) - 13 unit tests covering hashing, signature roundtrip, delta compute/apply, file growth/shrink, and decision logic
30 lines
1000 B
C
30 lines
1000 B
C
#ifndef PROTOCOL_H
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#define PROTOCOL_H
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#include "data.h"
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#include <stdbool.h>
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#include <stddef.h>
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typedef struct ssl_st SSL;
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typedef int Status;
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enum NET_STATUS { STATUS_OK, STATUS_ERROR, STATUS_FINISHED, STATUS_NEXT, STATUS_CHUNK, STATUS_MANIFEST, STATUS_CHECK, STATUS_DELTA_SIGNATURE, STATUS_DELTA_DATA };
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void io_set_fds(int read_fd, int write_fd);
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void io_set_bwlimit(unsigned long long bytes_per_sec);
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typedef struct ssl_st SSL;
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void io_set_ssl(SSL *ssl);
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bool send_n_data(int file_descriptor, void *data, size_t data_size);
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bool receive_n_data(int file_descriptor, void *data, size_t data_size);
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bool send_str(int file_descriptor, char *data);
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char *receive_str(int file_descriptor);
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bool send_data(int file_descriptor, Data *data);
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Data *receive_data(int file_descriptor);
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bool send_int(int file_descriptor, int data);
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bool receive_int(int file_descriptor, int *data);
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bool send_status(int file_descriptor, Status status);
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bool receive_status(int file_descriptor, Status *status);
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#endif
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