75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include "session.h"
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#include "libp2p/conn/session.h"
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// NOTE: 'data' is not guaranteed to be preserved when the read_fn
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// handler exists (read: it will be freed).
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struct yamux_stream;
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typedef void (*yamux_stream_read_fn)(struct yamux_stream* stream, uint32_t data_length, void* data);
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typedef void (*yamux_stream_fin_fn )(struct yamux_stream* stream);
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typedef void (*yamux_stream_rst_fn )(struct yamux_stream* stream);
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typedef void (*yamux_stream_free_fn)(struct yamux_stream* stream);
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enum yamux_stream_state
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{
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yamux_stream_inited,
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yamux_stream_syn_sent,
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yamux_stream_syn_recv,
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yamux_stream_est,
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yamux_stream_closing,
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yamux_stream_closed
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};
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struct yamux_stream
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{
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struct yamux_session* session;
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yamux_stream_read_fn read_fn;
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yamux_stream_fin_fn fin_fn ;
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yamux_stream_rst_fn rst_fn ;
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yamux_stream_free_fn free_fn;
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void* userdata;
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enum yamux_stream_state state;
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yamux_streamid id;
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uint32_t window_size;
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};
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// does not init the stream
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struct yamux_stream* yamux_stream_new(struct yamux_session* session, yamux_streamid id, void* userdata);
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// not obligatory, SYN is sent by yamux_stream_write when the stream
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// isn't initialised anyway
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ssize_t yamux_stream_init (struct yamux_stream* stream);
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// doesn't free the stream
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// uses FIN
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ssize_t yamux_stream_close(struct yamux_stream* stream);
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// uses RST
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ssize_t yamux_stream_reset(struct yamux_stream* stream);
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void yamux_stream_free(struct yamux_stream* stream);
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ssize_t yamux_stream_window_update(struct yamux_stream* stream, int32_t delta);
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ssize_t yamux_stream_write(struct yamux_stream* stream, uint32_t data_length, void* data);
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/***
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* process stream
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* @param stream the stream
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* @param frame the frame
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* @param incoming the stream bytes (after the frame)
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* @param incoming_size the size of incoming
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* @param session_context the SessionContext
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* @returns the number of bytes processed (can be zero) or negative number on error
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*/
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ssize_t yamux_stream_process(struct yamux_stream* stream, struct yamux_frame* frame, const uint8_t* incoming, size_t incoming_size, struct SessionContext* session_context);
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