FreePortFinder.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
namespace o2
{
namespace framework
{
 
class FreePortFinder
{
 public:
  FreePortFinder(unsigned short initialPort, unsigned short finalPort, unsigned short step);
  void scan();
  bool testPort(int port) const;
  ~FreePortFinder();
  unsigned short port() const;
  unsigned short range() const;
  // set verbose mode
  void setVerbose(bool b);
 
 private:
  int mSocket;
  unsigned short mInitialPort;
  unsigned short mFinalPort;
  unsigned short mStep;
  unsigned short mPort;
  bool mVerbose = true; // whether scan() reports about progress and final port found
};
 
} // namespace framework
} // namespace o2