transport.h

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#ifndef SAFECOMM_TRANSPORT_H
#define SAFECOMM_TRANSPORT_H
 
#include <stddef.h>
#include <stdint.h>
 
#include "safecomm/status.h"
 
#ifdef __cplusplus
extern "C" {
#endif

typedef safecomm_status_t (*safecomm_transport_send_fn)(void *user, const uint8_t *buf, size_t len);

typedef safecomm_status_t (*safecomm_transport_recv_fn)(void *user, uint8_t *buf, size_t cap, size_t *out_len);

typedef void (*safecomm_transport_close_fn)(void *user);

typedef struct
{
    safecomm_transport_send_fn  send;  
    safecomm_transport_recv_fn  recv;  
    safecomm_transport_close_fn close; 
    void                       *user;  
} safecomm_transport_t;

safecomm_status_t safecomm_transport_oal_tcp(safecomm_transport_t *out,
                                             const char *host, uint16_t port,
                                             uint32_t recv_timeout_ms);

typedef struct
{
    void    *channel;          
    uint32_t recv_timeout_ms;  
} safecomm_transport_channel_ctx_t;

safecomm_status_t safecomm_transport_from_channel_service(safecomm_transport_t *out,
                                                            safecomm_transport_channel_ctx_t *ctx,
                                                            void *channel,
                                                            uint32_t recv_timeout_ms);
 
#ifdef __cplusplus
}
#endif
 
#endif /* SAFECOMM_TRANSPORT_H */