OPeNDAP Hyrax Back End Server (BES)
Updated for version 3.8.3
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00001 // PPTConnection.h 00002 00003 // This file is part of bes, A C++ back-end server implementation framework 00004 // for the OPeNDAP Data Access Protocol. 00005 00006 // Copyright (c) 2004-2009 University Corporation for Atmospheric Research 00007 // Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu> 00008 // 00009 // This library is free software; you can redistribute it and/or 00010 // modify it under the terms of the GNU Lesser General Public 00011 // License as published by the Free Software Foundation; either 00012 // version 2.1 of the License, or (at your option) any later version. 00013 // 00014 // This library is distributed in the hope that it will be useful, 00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 // Lesser General Public License for more details. 00018 // 00019 // You should have received a copy of the GNU Lesser General Public 00020 // License along with this library; if not, write to the Free Software 00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00022 // 00023 // You can contact University Corporation for Atmospheric Research at 00024 // 3080 Center Green Drive, Boulder, CO 80301 00025 00026 // (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005 00027 // Please read the full copyright statement in the file COPYRIGHT_UCAR. 00028 // 00029 // Authors: 00030 // pwest Patrick West <pwest@ucar.edu> 00031 // jgarcia Jose Garcia <jgarcia@ucar.edu> 00032 00033 #ifndef PPTConnection_h 00034 #define PPTConnection_h 1 00035 00036 #include "Connection.h" 00037 #include "PPTProtocol.h" 00038 00039 class Socket ; 00040 00041 #define PPT_CHUNK_HEADER_SPACE 15 00042 00043 class PPTConnection : public Connection 00044 { 00045 private: 00046 int _timeout ; 00047 char * _inBuff ; 00048 unsigned int _inBuff_len ; 00049 unsigned int _bytesRead ; 00050 00051 PPTConnection() 00052 : _timeout( 0 ), 00053 _inBuff( 0 ), 00054 _inBuff_len( 0 ), 00055 _bytesRead( 0 ) {} 00056 00057 virtual int readBuffer( char *inBuff, 00058 const unsigned int buff_size ) ; 00059 virtual int readChunkHeader( char *inBuff, 00060 unsigned int buff_size ) ; 00061 virtual void sendChunk( const string &buffer, 00062 map<string,string> &extensions ) ; 00063 virtual void receive( ostream &strm, 00064 const unsigned int len ) ; 00065 00066 protected: 00067 PPTConnection( int timeout ) 00068 : _timeout( timeout ), 00069 _inBuff( 0 ), 00070 _inBuff_len( 0 ), 00071 _bytesRead( 0 ) {} 00072 00073 virtual int readBufferNonBlocking( char *inBuff, 00074 const unsigned int buff_size ); 00075 00076 virtual void send( const string &buffer ) ; 00077 virtual void read_extensions( map<string,string> &extensions, 00078 const string &xstr ) ; 00079 public: 00080 virtual ~PPTConnection() ; 00081 00082 virtual void initConnection() = 0 ; 00083 virtual void closeConnection() = 0 ; 00084 00085 virtual string exit() { return PPTProtocol::PPT_EXIT_NOW ; } 00086 00087 virtual void send( const string &buffer, 00088 map<string,string> &extensions ) ; 00089 virtual void sendExtensions( map<string,string> &extensions ) ; 00090 virtual void sendExit() ; 00091 virtual bool receive( map<string,string> &extensions, 00092 ostream *strm = 0 ) ; 00093 00094 virtual unsigned int getRecvChunkSize() ; 00095 virtual unsigned int getSendChunkSize() ; 00096 00097 virtual void dump( ostream &strm ) const ; 00098 } ; 00099 00100 #endif // PPTConnection_h 00101