i = strlen(g.urlPath);
  if( i>0 && g.urlPath[i-1]=='/' ){
    zSep = "";
  }else{
    zSep = "/";
  }
  blob_appendf(pHdr, "POST %s%sxfer HTTP/1.1\r\n", g.urlPath, zSep);
  if( g.urlProxyAuth ){
    blob_appendf(pHdr, "Proxy-Authorization: %s\n", g.urlProxyAuth);
  }
  blob_appendf(pHdr, "Host: %s\r\n", g.urlHostname);
  blob_appendf(pHdr, "User-Agent: Fossil/" MANIFEST_VERSION "\r\n");
  if( g.fHttpTrace ){
    blob_appendf(pHdr, "Content-Type: application/x-fossil-debug\r\n");
  }else{
    blob_appendf(pHdr, "Content-Type: application/x-fossil\r\n");
  }

  char *urlProtocol;      /* "http" or "https" */
  int urlPort;            /* TCP port number for http: or https: */
  int urlDfltPort;        /* The default port for the given protocol */
  char *urlPath;          /* Pathname for http: */
  char *urlUser;          /* User id for http: */
  char *urlPasswd;        /* Password for http: */
  char *urlCanonical;     /* Canonical representation of the URL */
  char *urlProxyAuth;     /* Proxy-Authorizer: string */

  const char *zLogin;     /* Login name.  "" if not logged in. */
  int noPswd;             /* Logged in without password (on 127.0.0.1) */
  int userUid;            /* Integer user id */

  /* Information used to populate the RCVFROM table */
  int rcvid;              /* The rcvid.  0 if not yet defined. */

*/
#include "config.h"
#include "url.h"

/*
** Parse the given URL.  Populate variables in the global "g" structure.
**
**      g.urlIsFile      True if FILE:
**      g.urlIsHttps     True if HTTPS: 
**      g.urlProtocol    "http" or "https" or "file"
**      g.urlName        Hostname for HTTP: or HTTPS:.  Filename for FILE:
**      g.urlPort        TCP port number for HTTP or HTTPS.
**      g.urlDfltPort    Default TCP port number (80 or 443).
**      g.urlPath        Path name for HTTP or HTTPS.
**      g.urlUser        Userid.
**      g.urlPasswd      Password.
**      g.urlHostname    HOST:PORT or just HOST if port is the default.
**      g.urlCanonical   The URL in canonical form, omitting userid/password
**
** HTTP url format is:
**
**     http://userid:password@host:port/path?query#fragment
**
*/
void url_parse(const char *zUrl){

      printf("********\n");
      url_enable_proxy("Using proxy: ");
    }
  }
}

/*
** Proxy specified on the command-line using the --proxy option.
** If there is no --proxy option on the command-line then this
** variable holds a NULL pointer.
*/
static const char *zProxyOpt = 0;

/*
** Extract any proxy options from the command-line.
**
**    --proxy URL|off
**
** This also happens to be a convenient function to use to look for
** the --nosync option that will temporarily disable the "autosync"
** feature.
*/
void url_proxy_options(void){
  zProxyOpt = find_option("proxy", 0, 1);
  if( find_option("nosync",0,0) ) g.fNoSync = 1;
}

/*
** If the "proxy" setting is defined, then change the URL settings
** (initialized by a prior call to url_parse()) so that the HTTP
** header will be appropriate for the proxy and so that the TCP/IP
** connection will be opened to the proxy rather than to the server.
**
** If zMsg is not NULL and a proxy is used, then print zMsg followed
** by the canonical name of the proxy (with userid and password suppressed).


*/
void url_enable_proxy(const char *zMsg){
  const char *zProxy;
  zProxy = zProxyOpt;
  if( zProxy==0 ){
    zProxy = db_get("proxy", 0);
    if( zProxy==0 || zProxy[0]==0 || is_truth(zProxy) ){
      zProxy = getenv("http_proxy");
    }
  }
  if( zProxy && zProxy[0] && !is_false(zProxy) ){
    char *zOriginalUrl = g.urlCanonical;
    char *zOriginalHost = g.urlHostname;
    char *zOriginalUser = g.urlUser;
    char *zOriginalPasswd = g.urlPasswd;
    g.urlUser = 0;
    g.urlPasswd = "";
    url_parse(zProxy);
    if( zMsg ) printf("%s%s\n", zMsg, g.urlCanonical);
    g.urlPath = zOriginalUrl;
    g.urlHostname = zOriginalHost;
    if( g.urlUser ){
      char *zCredentials1 = mprintf("%s:%s", g.urlUser, g.urlPasswd);
      char *zCredentials2 = encode64(zCredentials1, -1);
      g.urlProxyAuth = mprintf("Basic %z", zCredentials2);
      free(zCredentials1);
    }
    g.urlUser = zOriginalUser;
    g.urlPasswd = zOriginalPasswd;
  }
}

#if INTERFACE
/*
** An instance of this object is used to build a URL with query parameters.
*/