response.h

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#ifndef KEEL_RESPONSE_H
#define KEEL_RESPONSE_H
 
#include <keel/allocator.h>
#include <keel/drain.h>
#include <stddef.h>
#include <sys/types.h>
 
typedef struct KlTls KlTls;
 
typedef int (*KlWriteFn)(void *ctx, const char *data, size_t len);
 
typedef enum {
    KL_BODY_NONE,       
    KL_BODY_BUFFER,     
    KL_BODY_FILE,       
    KL_BODY_STREAM      
} KlBodyMode;
 
typedef struct KlResponse {
    KlAllocator *alloc;     
    int conn_fd;            
    char *hdr_buf;          
    size_t hdr_len;         
    size_t hdr_cap;         
    int status;             
    int headers_sent;       
    KlBodyMode body_mode;   
    const char *body;       
    size_t body_len;        
    char *body_owned;       
    size_t body_owned_size; 
    int file_fd;            
    off_t file_size;        
    off_t file_offset;      
    int stream_error;       
    int stream_ended;       
    KlDrain drain;          
    int drain_enabled;      
    size_t send_offset;     
    int keep_alive;         
    int head_request;       
    KlTls *tls;             
} KlResponse;
 
int  kl_response_init(KlResponse *res, KlAllocator *alloc);
 
void kl_response_reset(KlResponse *res);
 
void kl_response_status(KlResponse *res, int code);
 
int kl_response_header(KlResponse *res, const char *name, const char *value);
 
void kl_response_body_borrow(KlResponse *res, const char *data, size_t len);
 
int kl_response_body_copy(KlResponse *res, const char *data, size_t len);
 
void kl_response_file(KlResponse *res, int fd, off_t size);
 
void kl_response_free(KlResponse *res);
 
int kl_response_json(KlResponse *res, int code, const char *json, size_t len);
 
int kl_response_error(KlResponse *res, int code, const char *message);
 
int kl_response_enable_drain(KlResponse *res, KlAllocator *alloc,
                              size_t max_size);
 
int kl_response_begin_stream(KlResponse *res, int status,
                             KlWriteFn *out_write, void **out_ctx);
 
int kl_response_end_stream(KlResponse *res);
 
int kl_response_send(KlResponse *res);
 
#endif