Program: 161021
Project: 161021
Buggy source:
private Response doSyncUpdate(final HttpServletRequest httpServletRequest,final Request request,final Charset charset){
  loggerContext.init(getRequestId(request.getRemoteAddress()));
  try {
    if (!sourceMatchesContext(request.getSource())) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str" + request.getSource()).build();
    }
    if (request.isParam(Command.DIFF)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    boolean notificationsEnabled=true;
    if (request.isParam(Command.REDIRECT)) {
      if (!ipRanges.isTrusted(IpInterval.parse(request.getRemoteAddress()))) {
        return Response.status(Response.Status.FORBIDDEN).entity("String_Node_Str" + request.getRemoteAddress()).build();
      }
      notificationsEnabled=false;
    }
    if (!request.hasParam(Command.DATA) && request.isParam(Command.NEW)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    if (!request.hasParam(Command.DATA) && !request.isParam(Command.HELP)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    InternalUpdatePerformer.logHttpHeaders(loggerContext,httpServletRequest);
    InternalUpdatePerformer.logHttpUri(loggerContext,httpServletRequest);
    loggerContext.log("String_Node_Str",new SyncUpdateLogCallback(request.toString()));
    final UpdateContext updateContext=new UpdateContext(loggerContext);
    setSsoSessionToContext(updateContext,request.getSsoToken());
    final String content=request.hasParam("String_Node_Str") ? request.getParam("String_Node_Str") : "String_Node_Str";
    final UpdateRequest updateRequest=new UpdateRequest(new SyncUpdate(dateTimeProvider,request.getRemoteAddress()),getKeyword(request),content,updatesParser.parse(updateContext,Lists.newArrayList(new ContentWithCredentials(content,null,charset))),notificationsEnabled);
    final UpdateResponse updateResponse=updateRequestHandler.handle(updateRequest,updateContext);
    loggerContext.log("String_Node_Str",new SyncUpdateLogCallback(updateResponse.getResponse()));
    return getResponse(updateResponse);
  }
  finally {
    loggerContext.remove();
  }
}

Fixed version (ground truth):
private Response doSyncUpdate(final HttpServletRequest httpServletRequest,final Request request,final Charset charset){
  loggerContext.init(getRequestId(request.getRemoteAddress()));
  try {
    if (!sourceMatchesContext(request.getSource())) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str" + request.getSource()).build();
    }
    if (request.isParam(Command.DIFF)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    boolean notificationsEnabled=true;
    if (request.isParam(Command.REDIRECT)) {
      if (!ipRanges.isTrusted(IpInterval.parse(request.getRemoteAddress()))) {
        return Response.status(Response.Status.FORBIDDEN).entity("String_Node_Str" + request.getRemoteAddress()).build();
      }
      notificationsEnabled=false;
    }
    if (!request.hasParam(Command.DATA) && request.isParam(Command.NEW)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    if (!request.hasParam(Command.DATA) && !request.isParam(Command.HELP)) {
      return Response.status(Response.Status.BAD_REQUEST).entity("String_Node_Str").build();
    }
    InternalUpdatePerformer.logHttpHeaders(loggerContext,httpServletRequest);
    InternalUpdatePerformer.logHttpUri(loggerContext,httpServletRequest);
    loggerContext.log("String_Node_Str",new SyncUpdateLogCallback(request.toString()));
    final UpdateContext updateContext=new UpdateContext(loggerContext);
    setSsoSessionToContext(updateContext,request.getSsoToken());
    final String content=request.hasParam("String_Node_Str") ? request.getParam("String_Node_Str") : "String_Node_Str";
    final UpdateRequest updateRequest=new UpdateRequest(new SyncUpdate(dateTimeProvider,request.getRemoteAddress()),getKeyword(request),content,updatesParser.parse(updateContext,Lists.newArrayList(new ContentWithCredentials(content,charset))),notificationsEnabled);
    final UpdateResponse updateResponse=updateRequestHandler.handle(updateRequest,updateContext);
    loggerContext.log("String_Node_Str",new SyncUpdateLogCallback(updateResponse.getResponse()));
    return getResponse(updateResponse);
  }
  finally {
    loggerContext.remove();
  }
}