Differences From Artifact [ab607c2282]:

• File src/xfer.c — part of check-in [12cc5bbf22] at 2025-07-21 19:39:13 on branch xfer-login-card — Do not allow more than one login card in the sync protocol. (user: drh size: 101832)

To Artifact [233574e36e]:

• File src/xfer.c — part of check-in [b49c9b3685] at 2025-07-21 23:45:08 on branch xfer-login-card — Move the X-Fossil-Xfer-Login header check to the correct end of the connection. It is receiving these from libfossil tests but is failing to validate them, but that may well be a bug in that brand new downstream code. (user: stephan size: 101924)

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  if( g.zLoginCard ){
    /* Login card received via HTTP header X-Fossil-Xfer-Login */
    blob_init(&xfer.line, g.zLoginCard, -1);
    xfer.nToken = blob_tokenize(&xfer.line, xfer.aToken,
                                count(xfer.aToken));
    if( xfer.nToken==4
        && blob_eq(&xfer.aToken[0], "login") ){
      /*fprintf(stderr,"g.zLoginCard=%s nToken=%d\n", g.zLoginCard,
        xfer.nToken);*/
      goto handle_login_card;
    }
    fossil_free( g.zLoginCard );
    g.zLoginCard = 0;
  }
  while( blob_line(xfer.pIn, &xfer.line) ){
    if( blob_buffer(&xfer.line)[0]=='#' ) continue;