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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support

Security advisory: This version has known vulnerabilities. View advisories
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hackney c_src lsquic src liblsquic lsquic_frab_list.h
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c_src/lsquic/src/liblsquic/lsquic_frab_list.h 

/* Copyright (c) 2017 - 2022 LiteSpeed Technologies Inc.  See LICENSE. */

/*

 * lsquic_frab_list.h -- List of buffer for simple reading and writing

 *

 * Useful for buffering data that cannot be packetized immediately.

 */



#ifndef LSQUIC_FRAB_LIST_H

#define LSQUIC_FRAB_LIST_H 1



struct frame_buf

{

    TAILQ_ENTRY(frame_buf)  frab_next;

    unsigned short          frab_size,

                            frab_off,

                            frab_buf_size;  /* Total bytes in frab_buf */

    unsigned char           frab_buf[0];

};



#define frab_left_to_read(f) ((f)->frab_size - (f)->frab_off)

#define frab_left_to_write(f) ((f)->frab_buf_size - \

                        (unsigned short) sizeof(*(f)) - (f)->frab_size)

#define frab_write_to(f) ((f)->frab_buf + (f)->frab_size)



TAILQ_HEAD(frame_buf_head, frame_buf);



struct frab_list

{

    struct frame_buf_head   fl_frabs;

    void *                (*fl_alloc)(void *alloc_ctx, size_t size);

    void                  (*fl_free)(void *alloc_ctx, void *obj);

    void                   *fl_alloc_ctx;

    size_t                  fl_size;        /* Size of payload in frab_list */

    unsigned short          fl_buf_size;    /* Size of frame_buf */

};



void

lsquic_frab_list_init (struct frab_list *, unsigned short buf_size,

    void * (*fl_alloc)(void *alloc_ctx, size_t size),

    void (*fl_free)(void *alloc_ctx, void *obj), void *fl_alloc_ctx);



void

lsquic_frab_list_cleanup (struct frab_list *);



int

lsquic_frab_list_write (struct frab_list *, const void *, size_t);



size_t

lsquic_frab_list_size (void *);



size_t

lsquic_frab_list_read (void *, void *, size_t);



#define lsquic_frab_list_empty(fral) TAILQ_EMPTY(&(fral)->fl_frabs)



size_t

lsquic_frab_list_mem_used (const struct frab_list *);



#endif