urldata.h

  void *writeheader; /* write the header to this if non-NULL */
  char *set_url;     /* what original URL to work on */
  char *set_proxy;   /* proxy to use */
  long use_port;     /* which port to use (when not using default) */
  char *userpwd;     /* <user:password>, if used */
  long httpauth;     /* what kind of HTTP authentication to use (bitmask) */
  long proxyauth;    /* what kind of proxy authentication to use (bitmask) */
  char *set_range;   /* range, if used. See README for detailed specification
                        on this syntax. */
  long followlocation; /* as in HTTP Location: */
  long maxredirs;    /* maximum no. of http(s) redirects to follow, set to -1
                        for infinity */
  char *set_referer; /* custom string */
  bool free_referer; /* set TRUE if 'referer' points to a string we
                        allocated */
  char *useragent;   /* User-Agent string */
  char *encoding;    /* Accept-Encoding string */
  char *postfields;  /* if POST, set the fields' values here */
  curl_off_t postfieldsize; /* if POST, this might have a size to use instead
                               of strlen(), and then the data *may* be binary
                               (contain zero bytes) */
  char *ftpport;     /* port to send with the FTP PORT command */
  char *device;      /* local network interface/address to use */
  unsigned short localport; /* local port number to bind to */
  int localportrange; /* number of additional port numbers to test in case the
                         'localport' one can't be bind()ed */
  curl_write_callback fwrite;        /* function that stores the output */
  curl_write_callback fwrite_header; /* function that stores headers */
  curl_read_callback fread;          /* function that reads the input */
  curl_progress_callback fprogress;  /* function for progress information */
  curl_debug_callback fdebug;      /* function that write informational data */
  curl_ioctl_callback ioctl;       /* function for I/O control */
  curl_sockopt_callback fsockopt;  /* function for setting socket options */
  void *sockopt_client; /* pointer to pass to the socket options callback */

  /* the 3 curl_conv_callback functions below are used on non-ASCII hosts */
  /* function to convert from the network encoding: */
  curl_conv_callback convfromnetwork;
  /* function to convert to the network encoding: */
  curl_conv_callback convtonetwork;
  /* function to convert from UTF-8 encoding: */
  curl_conv_callback convfromutf8;

  void *progress_client; /* pointer to pass to the progress callback */
  void *ioctl_client;   /* pointer to pass to the ioctl callback */
  long timeout;         /* in seconds, 0 means no timeout */
  long connecttimeout;  /* in seconds, 0 means no timeout */
  long ftp_response_timeout; /* in seconds, 0 means no timeout */
  curl_off_t infilesize;      /* size of file to upload, -1 means unknown */
  long low_speed_limit; /* bytes/second */
  long low_speed_time;  /* number of seconds */
  curl_off_t max_send_speed; /* high speed limit in bytes/second for upload */
  curl_off_t max_recv_speed; /* high speed limit in bytes/second for download */
  curl_off_t set_resume_from;  /* continue [ftp] transfer from here */
  char *cookie;         /* HTTP cookie string to send */
  struct curl_slist *headers; /* linked list of extra headers */
  struct curl_httppost *httppost;  /* linked list of POST data */
  char *cert;           /* certificate */
  char *cert_type;      /* format for certificate (default: PEM) */
  char *key;            /* private key */
  char *key_type;       /* format for private key (default: PEM) */
  char *key_passwd;     /* plain text private key password */
  char *cookiejar;      /* dump all cookies to this file */
  bool cookiesession;   /* new cookie session? */
  bool crlf;            /* convert crlf on ftp upload(?) */
  char *ftp_account;    /* ftp account data */
  char *ftp_alternative_to_user;   /* command to send if USER/PASS fails */
  struct curl_slist *quote;     /* after connection is established */
  struct curl_slist *postquote; /* after the transfer */
  struct curl_slist *prequote; /* before the transfer, after type */
  struct curl_slist *source_quote;  /* 3rd party quote */
  struct curl_slist *source_prequote;  /* in 3rd party transfer mode - before
                                          the transfer on source host */
  struct curl_slist *source_postquote; /* in 3rd party transfer mode - after
                                          the transfer on source host */
  struct curl_slist *telnet_options; /* linked list of telnet options */
  curl_TimeCond timecondition; /* kind of time/date comparison */
  time_t timevalue;       /* what time to compare with */
  curl_closepolicy closepolicy; /* connection cache close concept */
  Curl_HttpReq httpreq;   /* what kind of HTTP request (if any) is this */
  char *customrequest;    /* HTTP/FTP request to use */
  long httpversion; /* when non-zero, a specific HTTP version requested to
                       be used in the library's request(s) */
  char *auth_host; /* if set, this is the allocated string to the host name
                    * to which to send the authorization data to, and no other
                    * host (which location-following otherwise could lead to)
                    */
  char *krb4_level; /* what security level */
  struct ssl_config_data ssl;  /* user defined SSL stuff */

  curl_proxytype proxytype; /* what kind of proxy that is in use */

  int dns_cache_timeout; /* DNS cache timeout */
  long buffer_size;      /* size of receive buffer to use */

  char *private_data; /* Private data */

  struct Curl_one_easy *one_easy; /* When adding an easy handle to a multi
                                     handle, an internal 'Curl_one_easy'
                                     struct is created and this is a pointer
                                     to the particular struct associated with
                                     this SessionHandle */

  struct curl_slist *http200aliases; /* linked list of aliases for http200 */

  long ip_version;

  curl_off_t max_filesize; /* Maximum file size to download */

  char *source_url;     /* for 3rd party transfer */
  char *source_userpwd;  /* for 3rd party transfer */

  curl_ftpfile ftp_filemethod; /* how to get to a file when FTP is used  */

/* Here follows boolean settings that define how to behave during
   this session. They are STATIC, set by libcurl users or at least initially
   and they don't change during operations. */

  bool printhost;       /* printing host name in debug info */
  bool get_filetime;
  bool tunnel_thru_httpproxy;
  bool prefer_ascii;    /* ASCII rather than binary */
  bool ftp_append;
  bool ftp_list_only;
  bool ftp_create_missing_dirs;
  bool ftp_use_port;
  bool hide_progress;
  bool http_fail_on_error;
  bool http_follow_location;
  bool http_disable_hostname_check_before_authentication;
  bool include_header;   /* include received protocol headers in data output */
  bool http_set_referer;
  bool http_auto_referer; /* set "correct" referer when following location: */
  bool opt_no_body;      /* as set with CURLOPT_NO_BODY */
  bool set_port;
  bool upload;
  enum CURL_NETRC_OPTION
       use_netrc;        /* defined in include/curl.h */
  char *netrc_file;      /* if not NULL, use this instead of trying to find
                            $HOME/.netrc */
  bool verbose;
  bool krb4;             /* kerberos4 connection requested */
  bool reuse_forbid;     /* forbidden to be reused, close after use */
  bool reuse_fresh;      /* do not re-use an existing connection  */
  bool ftp_use_epsv;     /* if EPSV is to be attempted or not */
  bool ftp_use_eprt;     /* if EPRT is to be attempted or not */
  curl_ftpssl ftp_ssl;   /* if AUTH TLS is to be attempted etc */
  curl_ftpauth ftpsslauth; /* what AUTH XXX to be attempted */
  bool no_signal;        /* do not use any signal/alarm handler */
  bool global_dns_cache; /* subject for future removal */
  bool tcp_nodelay;      /* whether to enable TCP_NODELAY or not */
  bool ignorecl;         /* ignore content length */
  bool ftp_skip_ip;      /* skip the IP address the FTP server passes on to
                            us */
  bool connect_only;     /* make connection, let application use the socket */
};

struct Names {
  struct curl_hash *hostcache;
  enum {
    HCACHE_NONE,    /* not pointing to anything */
    HCACHE_PRIVATE, /* points to our own */
    HCACHE_GLOBAL,  /* points to the (shrug) global one */
    HCACHE_MULTI,   /* points to a shared one in the multi handle */
    HCACHE_SHARED   /* points to a shared one in a shared object */
  } hostcachetype;
};

/*
 * The 'connectdata' struct MUST have all the connection oriented stuff as we
 * may have several simultaneous connections and connection structs in memory.
 *
 * The 'struct UserDefined' must only contain data that is set once to go for
 * many (perhaps) independent connections. Values that are generated or
 * calculated internally for the "session handle" must be defined within the
 * 'struct UrlState' instead.
 */

struct SessionHandle {
  struct Names dns;
  struct Curl_multi *multi;    /* if non-NULL, points to the multi handle
                                  struct of which this "belongs" */
  struct Curl_share *share;    /* Share, handles global variable mutexing */
  struct UserDefined set;      /* values set by the libcurl user */
  struct DynamicStatic change; /* possibly modified userdefined data */

  struct CookieInfo *cookies;  /* the cookies, read from files and servers */
  struct Progress progress;    /* for all the progress meter data */
  struct UrlState state;       /* struct for fields used for state info and
                                  other dynamic purposes */
  struct PureInfo info;        /* stats, reports and info data */
#if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
  iconv_t outbound_cd;         /* for translating to the network encoding */
  iconv_t inbound_cd;          /* for translating from the network encoding */
  iconv_t utf8_cd;             /* for translating to UTF8 */
#endif /* CURL_DOES_CONVERSIONS && HAVE_ICONV */
};

#define LIBCURL_NAME "libcurl"

#endif