http.h

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#ifndef __TOOLS_HTTP_H
#define __TOOLS_HTTP_H

#include <stddef.h>

/*------------------------------------------------------------------------*/

typedef enum http_method {
        HTTP_OPTIONS,
        HTTP_GET,
        HTTP_HEAD,
        HTTP_POST,
        HTTP_PUT,
        HTTP_DELETE,
        HTTP_TRACE,
        HTTP_CONNECT,
} http_method_t;

/*------------------------------------------------------------------------*/

typedef enum http_status {
        HTTP_SUCCESS           = 0,
        HTTP_CONNECTION_CLOSED,
        HTTP_SOCKET_ERROR,
        HTTP_LARGE_REQUEST,
        HTTP_INVALID_REQUEST,
        HTTP_UNKNOWN_REQUEST,
        HTTP_INVALID_HEADER,
        HTTP_INVALID_REPLY,
        HTTP_ABORTED,
        HTTP_OUT_MEMORY,
} http_status_t;

/*------------------------------------------------------------------------*/

typedef enum http_header_type {
        HTTP_HEADER_STRING,
        HTTP_HEADER_INT,
} http_header_type_t;

typedef struct http_header {
        char *name;

        http_header_type_t type;

        union {
                char *s;

                int i;
        } val;
} http_header_t;

#define HTTP_HEADER_STRING(n, v)                                          \
        { .type = HTTP_HEADER_STRING, .name = (n), .val.s = (v), }

#define HTTP_HEADER_INT(n, v)                                             \
        { .type = HTTP_HEADER_INT, .name = (n), .val.i = (v), }

/*------------------------------------------------------------------------*/

#define HTTP_ERROR(x) ((x) != HTTP_SUCCESS)

/*------------------------------------------------------------------------*/

typedef int (*http_request_cb_t)(http_method_t m, const char *path, const char *ver, void *priv);

typedef int (*http_reply_cb_t)(const char *ver, int code, const char *msg, void *priv);

typedef int (*http_header_cb_t)(const char *name, const char *value, void *priv);

/*------------------------------------------------------------------------*/

http_status_t http_request_send(int sockfd, http_method_t method, const char *path, const char *ver, http_header_t hdr[], size_t count);

http_status_t http_request_recv(int sockfd, http_request_cb_t request_cb, http_header_cb_t header_cb, void *priv);

http_status_t http_reply_send(int sockfd, const char *ver, int code, const char *desc, http_header_t hdr[], size_t count);

http_status_t http_reply_recv(int sockfd, http_reply_cb_t reply_cb, http_header_cb_t header_cb, void *priv);

#endif /* __TOOLS_HTTP_H */