JSocketBlocking.hh

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#ifndef __JNET__JSOCKETBLOCKING__
#define __JNET__JSOCKETBLOCKING__
 
#include "JNet/JTCPSocket.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JNET {}
namespace JPP { using namespace JNET; }
 
namespace JNET {
 
 
  /**
   * Blocking socket I/O.
   * This class implements blocking I/O regardless of the configuration
   * of the socket (see method JSocket::setNonBlocking()).
   */
  class JSocketBlocking :
    public JTCPSocket
  {
  public:
    /**
     * Default constructor.
     */
    JSocketBlocking() :
      JTCPSocket()
    {}
 
 
    /**
     * Constructor.
     *
     * \param  socket          socket
     */
    JSocketBlocking(const JTCPSocket& socket) :
      JTCPSocket(socket)
    {}
 
  
 
    /**
     * Read data from socket.
     *
     * \param  buffer       buffer
     * \param  length       number of bytes to read
     * \return              number of bytes read
     */
    int read(char* buffer, const int length) override
    {
      char* data = buffer;
      int   size = length;
                  
      while (size != 0) { 
        
        const int pos = JSocket::read(data, size);
        
        if (pos != 0) {
          data += pos;
          size -= pos;
        } else {
          in_avail(1);
        }
      }
 
      return length - size;
    }
 
 
    /**
     * Write data to socket.
     *
     * \param  buffer       buffer
     * \param  length       number of bytes to write
     * \return              number of bytes written
     */
    int write(const char* buffer, const int length) override
    {
      const char* data = buffer;
      int         size = length;
                  
      while (size != 0) { 
        
        const int pos = JSocket::write(data, size);
        
        if (pos != 0) {
          data += pos;
          size -= pos;
        } else {
          out_avail(1);
        }
      }
 
      return length - size;
    }
  };
}
 
#endif