curl.h

  CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
  CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
  CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
  CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
  CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
  CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
  CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
  CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
  CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
  CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
  CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
  CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
  CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
  CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
  CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
  CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
  CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
  CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
  CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
  CURLINFO_LASTSOCKET       = CURLINFO_LONG   + 29,
  CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
  CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
  CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
  CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
  CURLINFO_CERTINFO         = CURLINFO_SLIST  + 34,
  CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
  CURLINFO_RTSP_SESSION_ID  = CURLINFO_STRING + 36,
  CURLINFO_RTSP_CLIENT_CSEQ = CURLINFO_LONG   + 37,
  CURLINFO_RTSP_SERVER_CSEQ = CURLINFO_LONG   + 38,
  CURLINFO_RTSP_CSEQ_RECV   = CURLINFO_LONG   + 39,
  CURLINFO_PRIMARY_PORT     = CURLINFO_LONG   + 40,
  CURLINFO_LOCAL_IP         = CURLINFO_STRING + 41,
  CURLINFO_LOCAL_PORT       = CURLINFO_LONG   + 42,
  /* Fill in new entries below here! */

  CURLINFO_LASTONE          = 42
} CURLINFO;

/* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
   CURLINFO_HTTP_CODE */
#define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE

typedef enum {
  CURLCLOSEPOLICY_NONE, /* first, never use this */

  CURLCLOSEPOLICY_OLDEST,
  CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
  CURLCLOSEPOLICY_LEAST_TRAFFIC,
  CURLCLOSEPOLICY_SLOWEST,
  CURLCLOSEPOLICY_CALLBACK,

  CURLCLOSEPOLICY_LAST /* last, never use this */
} curl_closepolicy;

#define CURL_GLOBAL_SSL (1<<0)
#define CURL_GLOBAL_WIN32 (1<<1)
#define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
#define CURL_GLOBAL_NOTHING 0
#define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
#define CURL_GLOBAL_ACK_EINTR (1<<2)


/*****************************************************************************
 * Setup defines, protos etc for the sharing stuff.
 */

/* Different data locks for a single share */
typedef enum {
  CURL_LOCK_DATA_NONE = 0,
  /*  CURL_LOCK_DATA_SHARE is used internally to say that
   *  the locking is just made to change the internal state of the share
   *  itself.
   */
  CURL_LOCK_DATA_SHARE,
  CURL_LOCK_DATA_COOKIE,
  CURL_LOCK_DATA_DNS,
  CURL_LOCK_DATA_SSL_SESSION,
  CURL_LOCK_DATA_CONNECT,
  CURL_LOCK_DATA_LAST
} curl_lock_data;

/* Different lock access types */
typedef enum {
  CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
  CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
  CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
  CURL_LOCK_ACCESS_LAST        /* never use */
} curl_lock_access;

typedef void (*curl_lock_function)(CURL *handle,
                                   curl_lock_data data,
                                   curl_lock_access locktype,
                                   void *userptr);
typedef void (*curl_unlock_function)(CURL *handle,
                                     curl_lock_data data,
                                     void *userptr);

typedef void CURLSH;

typedef enum {
  CURLSHE_OK,  /* all is fine */
  CURLSHE_BAD_OPTION, /* 1 */
  CURLSHE_IN_USE,     /* 2 */
  CURLSHE_INVALID,    /* 3 */
  CURLSHE_NOMEM,      /* 4 out of memory */
  CURLSHE_NOT_BUILT_IN, /* 5 feature not present in lib */
  CURLSHE_LAST        /* never use */
} CURLSHcode;

typedef enum {
  CURLSHOPT_NONE,  /* don't use */
  CURLSHOPT_SHARE,   /* specify a data type to share */
  CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
  CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
  CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
  CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
                           callback functions */
  CURLSHOPT_LAST  /* never use */
} CURLSHoption;

CURL_EXTERN CURLSH *curl_share_init(void);
CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *);

/****************************************************************************
 * Structures for querying information about the curl library at runtime.
 */

typedef enum {
  CURLVERSION_FIRST,
  CURLVERSION_SECOND,
  CURLVERSION_THIRD,
  CURLVERSION_FOURTH,
  CURLVERSION_LAST /* never actually use this */
} CURLversion;

/* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
   basically all programs ever that want to get version information. It is
   meant to be a built-in version number for what kind of struct the caller
   expects. If the struct ever changes, we redefine the NOW to another enum
   from above. */
#define CURLVERSION_NOW CURLVERSION_FOURTH

typedef struct {
  CURLversion age;          /* age of the returned struct */
  const char *version;      /* LIBCURL_VERSION */
  unsigned int version_num; /* LIBCURL_VERSION_NUM */
  const char *host;         /* OS/host/cpu/machine when configured */
  int features;             /* bitmask, see defines below */
  const char *ssl_version;  /* human readable string */
  long ssl_version_num;     /* not used anymore, always 0 */
  const char *libz_version; /* human readable string */
  /* protocols is terminated by an entry with a NULL protoname */
  const char * const *protocols;

  /* The fields below this were added in CURLVERSION_SECOND */
  const char *ares;
  int ares_num;

  /* This field was added in CURLVERSION_THIRD */
  const char *libidn;

  /* These field were added in CURLVERSION_FOURTH */

  /* Same as '_libiconv_version' if built with HAVE_ICONV */
  int iconv_ver_num;

  const char *libssh_version; /* human readable string */

} curl_version_info_data;

#define CURL_VERSION_IPV6      (1<<0)  /* IPv6-enabled */
#define CURL_VERSION_KERBEROS4 (1<<1)  /* kerberos auth is supported */
#define CURL_VERSION_SSL       (1<<2)  /* SSL options are present */
#define CURL_VERSION_LIBZ      (1<<3)  /* libz features are present */
#define CURL_VERSION_NTLM      (1<<4)  /* NTLM auth is supported */
#define CURL_VERSION_GSSNEGOTIATE (1<<5) /* Negotiate auth support */
#define CURL_VERSION_DEBUG     (1<<6)  /* built with debug capabilities */
#define CURL_VERSION_ASYNCHDNS (1<<7)  /* asynchronous dns resolves */
#define CURL_VERSION_SPNEGO    (1<<8)  /* SPNEGO auth */
#define CURL_VERSION_LARGEFILE (1<<9)  /* supports files bigger than 2GB */
#define CURL_VERSION_IDN       (1<<10) /* International Domain Names support */
#define CURL_VERSION_SSPI      (1<<11) /* SSPI is supported */
#define CURL_VERSION_CONV      (1<<12) /* character conversions supported */
#define CURL_VERSION_CURLDEBUG (1<<13) /* debug memory tracking supported */
#define CURL_VERSION_TLSAUTH_SRP (1<<14) /* TLS-SRP auth is supported */
#define CURL_VERSION_NTLM_WB   (1<<15) /* NTLM delegating to winbind helper */
#define CURL_VERSION_HTTP2     (1<<16) /* HTTP2 support built-in */

 /*
 * NAME curl_version_info()
 *
 * DESCRIPTION
 *
 * This function returns a pointer to a static copy of the version info
 * struct. See above.
 */
CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);

/*
 * NAME curl_easy_strerror()
 *
 * DESCRIPTION
 *
 * The curl_easy_strerror function may be used to turn a CURLcode value
 * into the equivalent human readable error string.  This is useful
 * for printing meaningful error messages.
 */
CURL_EXTERN const char *curl_easy_strerror(CURLcode);

/*
 * NAME curl_share_strerror()
 *
 * DESCRIPTION
 *
 * The curl_share_strerror function may be used to turn a CURLSHcode value
 * into the equivalent human readable error string.  This is useful
 * for printing meaningful error messages.
 */
CURL_EXTERN const char *curl_share_strerror(CURLSHcode);

/*
 * NAME curl_easy_pause()
 *
 * DESCRIPTION
 *
 * The curl_easy_pause function pauses or unpauses transfers. Select the new
 * state by setting the bitmask, use the convenience defines below.
 *
 */
CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);

#define CURLPAUSE_RECV      (1<<0)
#define CURLPAUSE_RECV_CONT (0)

#define CURLPAUSE_SEND      (1<<2)
#define CURLPAUSE_SEND_CONT (0)

#define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
#define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)

#ifdef  __cplusplus
}
#endif

/* unfortunately, the easy.h and multi.h include files need options and info
  stuff before they can be included! */
#include "easy.h" /* nothing in curl is fun without the easy stuff */
#include "multi.h"

/* the typechecker doesn't work in C++ (yet) */
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
    ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
    !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
#include "typecheck-gcc.h"
#else
#if defined(__STDC__) && (__STDC__ >= 1)
/* This preprocessor magic that replaces a call with the exact same call is
   only done to make sure application authors pass exactly three arguments
   to these functions. */
#define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
#define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
#endif /* __STDC__ >= 1 */
#endif /* gcc >= 4.3 && !__cplusplus */

#endif /* __CURL_CURL_H */