*/
#define SYNC_PUSH           0x0001    /* push content client to server */
#define SYNC_PULL           0x0002    /* pull content server to client */
#define SYNC_CLONE          0x0004    /* clone the repository */
#define SYNC_PRIVATE        0x0008    /* Also transfer private content */
#define SYNC_VERBOSE        0x0010    /* Extra diagnostics */
#define SYNC_RESYNC         0x0020    /* --verily */

#define SYNC_FROMPARENT     0x0040    /* Pull from the parent project */
#define SYNC_UNVERSIONED    0x0100    /* Sync unversioned content */
#define SYNC_UV_REVERT      0x0200    /* Copy server unversioned to client */
#define SYNC_UV_TRACE       0x0400    /* Describe UV activities */
#define SYNC_UV_DRYRUN      0x0800    /* Do not actually exchange files */
#define SYNC_IFABLE         0x1000    /* Inability to sync is not fatal */
#define SYNC_CKIN_LOCK      0x2000    /* Lock the current check-in */
#endif

  int nRoundtrip= 0;      /* Number of HTTP requests */
  int nArtifactSent = 0;  /* Total artifacts sent */
  int nArtifactRcvd = 0;  /* Total artifacts received */
  const char *zOpType = 0;/* Push, Pull, Sync, Clone */
  double rSkew = 0.0;     /* Maximum time skew */
  int uvHashSent = 0;     /* The "pragma uv-hash" message has been sent */
  int uvDoPush = 0;       /* Generate uvfile messages to send to server */
  int uvPullOnly = 0;     /* 1: pull-only.  2: pull-only warning issued */
  int nUvGimmeSent = 0;   /* Number of uvgimme cards sent on this cycle */
  int nUvFileRcvd = 0;    /* Number of uvfile cards received on this cycle */
  sqlite3_int64 mtime;    /* Modification time on a UV file */
  int autopushFailed = 0; /* Autopush following commit failed if true */
  const char *zCkinLock;  /* Name of check-in to lock.  NULL for none */
  const char *zClientId;  /* A unique identifier for this check-out */
  unsigned int mHttpFlags;/* Flags for the http_exchange() subsystem */

  if( db_get_boolean("dont-push", 0) ) syncFlags &= ~SYNC_PUSH;
  if( (syncFlags & (SYNC_PUSH|SYNC_PULL|SYNC_CLONE|SYNC_UNVERSIONED))==0

     && configRcvMask==0 && configSendMask==0 ) return 0;
  if( syncFlags & SYNC_FROMPARENT ){
    configRcvMask = 0;
    configSendMask = 0;
    syncFlags &= ~(SYNC_PUSH);
    zPCode = db_get("parent-project-code", 0);
    if( zPCode==0 || db_get("parent-project-name",0)==0 ){

      configRcvMask = 0;
    }

    /* Client sends a request to sync unversioned files.
    ** On a clone, delay sending this until the second cycle since
    ** the login card might fail on the first cycle.
    */
    if( (syncFlags & SYNC_UNVERSIONED)!=0
     && ((syncFlags & SYNC_CLONE)==0 || nCycle>0)
     && !uvHashSent
    ){
      blob_appendf(&send, "pragma uv-hash %s\n", unversioned_content_hash(0));
      nCardSent++;
      uvHashSent = 1;
    }

          }
        }else if( iStatus==2 ){
          db_multi_exec(
            "UPDATE unversioned SET mtime=%lld WHERE name=%Q", mtime, zName
          );
          db_unset("uv-hash", 0);
        }
        if( iStatus>=4 && uvPullOnly==1 ){
          fossil_warning(
            "Warning: uv-pull-only                                       \n"
            "         Unable to push unversioned content because you lack\n"
            "         sufficient permission on the server\n"
          );
          uvPullOnly = 2;
        }          
        if( iStatus<=3 || uvPullOnly ){
          db_multi_exec("DELETE FROM uv_tosend WHERE name=%Q", zName);
        }else if( iStatus==4 ){
          db_multi_exec("UPDATE uv_tosend SET mtimeOnly=1 WHERE name=%Q",zName);
        }else if( iStatus==5 ){
          db_multi_exec("REPLACE INTO uv_tosend(name,mtimeOnly) VALUES(%Q,0)",
                        zName);
        }

          if( xfer.nToken>=5 ){
            xfer.remoteDate = atoi(blob_str(&xfer.aToken[3]));
            xfer.remoteTime = atoi(blob_str(&xfer.aToken[4]));
          }
        }

        /*   pragma uv-pull-only
        **   pragma uv-push-ok
        **
        ** If the server is unwill to accept new unversioned content (because
        ** this client lacks the necessary permissions) then it sends a
        ** "uv-pull-only" pragma so that the client will know not to waste
        ** bandwidth trying to upload unversioned content.  If the server
        ** does accept new unversioned content, it sends "uv-push-ok".
        */
        if( syncFlags & SYNC_UNVERSIONED ){
          if( blob_eq(&xfer.aToken[1], "uv-pull-only") ){

            uvPullOnly = 1;



            if( syncFlags & SYNC_UV_REVERT ) uvDoPush = 1;
          }else if( blob_eq(&xfer.aToken[1], "uv-push-ok") ){
            uvDoPush = 1;
          }
        }

        /*    pragma ci-lock-fail  USER-HOLDING-LOCK  LOCK-TIME