text: // Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
  
  #pragma once
  
  #include <vespa/vespalib/stllike/string.h>
  #include "socket_address.h"
  
  namespace vespalib {
  
  /**
   * High-level socket address specification.
   **/
  class SocketSpec
  {
  private:
      enum class Type { INVALID, PATH, NAME, HOST_PORT, PORT };
      static const vespalib::string _empty;
      Type                          _type;
      vespalib::string              _node;
      int                           _port;
  
      SocketSpec() : _type(Type::INVALID), _node(), _port(-1) {}
      SocketSpec(Type type, const vespalib::string &node, int port)
          : _type(type), _node(node), _port(port) {}
      SocketAddress address(bool server) const;
  public:
      static const SocketSpec invalid;
      explicit SocketSpec(const vespalib::string &spec);
      vespalib::string spec() const;
      SocketSpec replace_host(const vespalib::string &new_host) const;
      static SocketSpec from_path(const vespalib::string &path) {
          return SocketSpec(Type::PATH, path, -1);
      }
      static SocketSpec from_name(const vespalib::string &name) {
          return SocketSpec(Type::NAME, name, -1);
      }
      static SocketSpec from_host_port(const vespalib::string &host, int port) {
          return SocketSpec(Type::HOST_PORT, host, port);
      }
      static SocketSpec from_port(int port) {
          return SocketSpec(Type::PORT, "", port);
      }
      bool valid() const { return (_type != Type::INVALID); }
      const vespalib::string &path() const { return (_type == Type::PATH) ? _node : _empty; }
      const vespalib::string &name() const { return (_type == Type::NAME) ? _node : _empty; }
      const vespalib::string &host() const { return (_type == Type::HOST_PORT) ? _node : _empty; }
      const vespalib::string &host_with_fallback() const;
      int port() const { return _port; }
      SocketAddress client_address() const { return address(false); }
      SocketAddress server_address() const { return address(true); }
  };
  
  } // namespace vespalib
  