[834] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4FRClientServer.cc,v 1.6 2006/06/29 21:16:56 gunter Exp $ |
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[944] | 28 | // GEANT4 tag $Name: $ |
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[834] | 29 | // |
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| 30 | // Satoshi TANAKA, Wed Jul 3 14:14:29 JST 1996 |
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| 31 | //////////////////////////////// |
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| 32 | ///// G4FRClientServer.cc ///// |
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| 33 | //////////////////////////////// |
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| 34 | |
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| 35 | |
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| 36 | //=================// |
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| 37 | #ifdef G4VIS_BUILD_DAWN_DRIVER |
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| 38 | //=================// |
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| 39 | |
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| 40 | #include "G4FRClientServer.hh" |
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| 41 | |
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| 42 | // #define DEBUG_CLIENT_SERVER |
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| 43 | |
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| 44 | #include<sys/param.h> |
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| 45 | |
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| 46 | //----- const |
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| 47 | const char DEFAULT_SUN_PATH[] = "FR_TMP3" ; |
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| 48 | const int DEFAULT_PORT_NUMBER = 40701 ; |
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| 49 | //const char FR_ENV_SERVER_HOST_NAME[] = "G4DAWN_HOST_NAME" ; // moved to .hh |
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| 50 | const int MAX_BINDING_TRIAL = 10 ; |
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| 51 | const int BINDING_TRIAL_INTERVAL = 5 ; |
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| 52 | const int MAX_CONNECT_TRIAL = 10 ; |
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| 53 | const char FR_DEFAULT_HOST_NAME[] = "localhost" ; |
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| 54 | |
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| 55 | //----- G4FRClientServer::G4FRClientServer () |
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| 56 | G4FRClientServer::G4FRClientServer ( char terminator , char end_line ) : |
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| 57 | TERMINATOR ( terminator ) , |
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| 58 | END_OF_LINE( end_line ) , |
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| 59 | fSocketFd ( -1 ) |
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| 60 | { |
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| 61 | SetSunPath ( DEFAULT_SUN_PATH ) ; // for Unix domain |
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| 62 | SetPortNumber ( DEFAULT_PORT_NUMBER ) ; |
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| 63 | ClearReceivedMessage () ; |
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| 64 | } |
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| 65 | |
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| 66 | |
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| 67 | //----- G4FRClientServer::ConnectUnix() |
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| 68 | int G4FRClientServer::ConnectUnix() |
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| 69 | { |
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| 70 | //----- local |
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| 71 | int flag_connected = 0 ; |
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| 72 | struct sockaddr_un server_address ; |
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| 73 | |
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| 74 | //----- make socket |
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| 75 | fSocketFd = socket( AF_UNIX, SOCK_STREAM, 0 ); |
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| 76 | if( fSocketFd < 0 ) { Err("G4FRClientServer::ConnectUnix(),socket"); } |
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| 77 | |
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| 78 | //----- set server address |
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| 79 | memset( (char *)&server_address, '\0', sizeof(server_address)) ; |
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| 80 | server_address.sun_family = AF_UNIX ; |
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| 81 | strcpy( server_address.sun_path, SUN_PATH ); |
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| 82 | |
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| 83 | //----- connection |
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| 84 | int connection_status = -1 ; |
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| 85 | int num_trial = 0 ; |
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| 86 | while( connection_status < 0 && num_trial <= MAX_CONNECT_TRIAL ) { |
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| 87 | num_trial++ ; |
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| 88 | connection_status = connect( fSocketFd, (struct sockaddr * )(&server_address), sizeof( server_address ) ) ; |
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| 89 | if( connection_status <0 ) |
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| 90 | { |
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| 91 | #if defined DEBUG_CLIENT_SERVER |
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| 92 | Err("G4FRClientServer::ConnectUnix(),connect => RETRY"); |
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| 93 | #endif |
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| 94 | flag_connected = 0 ; |
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| 95 | } else { |
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| 96 | flag_connected = 1 ; |
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| 97 | break ; |
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| 98 | } |
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| 99 | |
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| 100 | sleep(1); |
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| 101 | |
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| 102 | } // while(connection_status...) |
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| 103 | |
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| 104 | //----- return status of connection |
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| 105 | return flag_connected ; |
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| 106 | |
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| 107 | } // G4FRClientServer::ConnectUnix() |
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| 108 | |
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| 109 | |
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| 110 | //----- G4FRClientServer::Receive() |
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| 111 | void G4FRClientServer::Receive() |
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| 112 | { |
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| 113 | //----- |
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| 114 | ClearReceivedMessage () ; |
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| 115 | if( recv( fSocketFd, fReceivedMessage, G4FRClientServer::RECV_BUFMAX , 0 ) < 0 ) |
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| 116 | { |
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| 117 | Err("G4FRClientServer::Receive(), recv"); |
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| 118 | } |
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| 119 | |
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| 120 | #if defined DEBUG_CLIENT_SERVER |
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| 121 | G4cerr << ">>>>> receivedMessage = " << fReceivedMessage << G4endl; |
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| 122 | #endif |
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| 123 | |
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| 124 | } |
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| 125 | |
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| 126 | |
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| 127 | //----- G4FRClientServer::ReceiveLine() |
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| 128 | void G4FRClientServer::ReceiveLine() |
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| 129 | { |
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| 130 | //----- local |
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| 131 | char buf[1]; |
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| 132 | int index = 0 ; |
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| 133 | |
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| 134 | //----- receive a line (until newline) |
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| 135 | memset(fReceivedMessage, '\0', RECV_BUFMAX) ; |
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| 136 | while( read( fSocketFd, buf, 1 ) == 1 ) { |
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| 137 | fReceivedMessage[index++] = buf[0]; |
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| 138 | if( IsEndOfLine(buf[0]) ) { break ;} |
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| 139 | } |
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| 140 | } // G4FRClientServer::ReceiveLine() |
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| 141 | |
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| 142 | |
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| 143 | //----- G4FRClientServer::Send() |
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| 144 | void G4FRClientServer::Send() |
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| 145 | { |
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| 146 | if( send( fSocketFd, fSendingMessage, strlen(fSendingMessage) , 0 ) < 0 ) |
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| 147 | { |
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| 148 | Err("G4FRClientServer::Send(), send"); |
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| 149 | } |
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| 150 | |
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| 151 | #if defined DEBUG_CLIENT_SERVER |
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| 152 | G4cerr << "<<<<< SentMessage = " << fSendingMessage << G4endl; |
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| 153 | #endif |
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| 154 | |
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| 155 | } // G4FRClientServer::Send() |
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| 156 | |
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| 157 | |
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| 158 | //----- G4FRClientServer::Send( message ) |
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| 159 | void G4FRClientServer::Send( const char* message ) |
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| 160 | { |
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| 161 | this->SetSendingMessage( message ) ; |
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| 162 | this->Send(); |
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| 163 | |
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| 164 | } // G4FRClientServer::Send( message ) |
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| 165 | |
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| 166 | |
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| 167 | //----- G4FRClientServer::SendLine() |
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| 168 | void G4FRClientServer::SendLine( const char* message ) |
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| 169 | { |
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| 170 | //----- local |
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| 171 | int smsg_length ; |
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| 172 | |
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| 173 | //----- set message to sending buf |
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| 174 | this->SetSendingMessage( message ) ; |
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| 175 | smsg_length = GetSendingMessageLength() ; |
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| 176 | |
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| 177 | //----- add newline if necessary |
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| 178 | if( !IsEndOfLine( fSendingMessage[ (smsg_length - 1)] ) ) { |
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| 179 | fSendingMessage[ smsg_length ] = GetEndOfLine() ; |
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| 180 | fSendingMessage[ (smsg_length +1) ] = '\0' ; |
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| 181 | smsg_length = GetSendingMessageLength(); |
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| 182 | } |
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| 183 | |
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| 184 | //----- send |
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| 185 | this->Send(); |
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| 186 | |
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| 187 | }// G4FRClientServer::SendLine() |
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| 188 | |
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| 189 | |
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| 190 | //----- G4FRClientServer::DisConnect() |
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| 191 | void G4FRClientServer::DisConnect() |
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| 192 | { |
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| 193 | //----- close connection |
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| 194 | if( shutdown(fSocketFd,2) < 0 ) { |
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| 195 | Err("G4FRClientServer::DisConnect,shutdown"); |
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| 196 | } |
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| 197 | close( fSocketFd ); |
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| 198 | |
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| 199 | this->Clear(); |
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| 200 | } |
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| 201 | |
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| 202 | |
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| 203 | |
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| 204 | //----- G4FRClientServer::Clear() |
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| 205 | void G4FRClientServer::Clear() |
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| 206 | { |
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| 207 | unlink(SUN_PATH) ; |
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| 208 | fSocketFd = -1 ; |
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| 209 | } |
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| 210 | |
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| 211 | |
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| 212 | //----- G4FRClientServer::ConnectINET() |
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| 213 | int G4FRClientServer::ConnectINET() |
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| 214 | { |
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| 215 | //----- local |
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| 216 | int flag_connected = 0 ; |
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| 217 | sockaddr_in server_address ; |
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| 218 | char server_hostname[32] ; |
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| 219 | hostent* server_host_p ; |
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| 220 | |
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| 221 | //----- make socket |
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| 222 | fSocketFd = socket( AF_INET, SOCK_STREAM, 0 ); |
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| 223 | if( fSocketFd < 0 ) { |
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| 224 | #if defined DEBUG_CLIENT_SERVER |
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| 225 | Err("G4FRClientServer::ConnectINET(),socket"); |
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| 226 | #endif |
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| 227 | } |
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| 228 | |
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| 229 | //----- get IP address of server from its name |
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| 230 | if( getenv( FR_ENV_SERVER_HOST_NAME ) != NULL ) |
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| 231 | { |
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| 232 | //----- get server name |
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| 233 | strcpy( server_hostname, getenv( FR_ENV_SERVER_HOST_NAME ) ); |
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| 234 | |
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| 235 | //----- get IP address of server from its name, |
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| 236 | //..... reading /etc/hosts |
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| 237 | server_host_p = gethostbyname( server_hostname ) ; |
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| 238 | |
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| 239 | //----- If the host specified by FR_ENV_SERVER_HOST_NAME |
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| 240 | //..... is not written in /etc/hosts, |
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| 241 | //...... server host is set to the same as the |
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| 242 | //...... client host |
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| 243 | if( !server_host_p ) { |
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| 244 | #if defined DEBUG_CLIENT_SERVER |
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| 245 | Err("G4FRClientServer::ConnectINET(), gethostbyname"); |
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| 246 | #endif |
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| 247 | server_host_p = gethostbyname( FR_DEFAULT_HOST_NAME ) ; |
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| 248 | } |
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| 249 | |
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| 250 | } else { |
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| 251 | server_host_p = gethostbyname( FR_DEFAULT_HOST_NAME ) ; |
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| 252 | } |
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| 253 | |
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| 254 | |
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| 255 | |
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| 256 | // #if defined DEBUG_CLIENT_SERVER |
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| 257 | G4cerr << "***** Trying connection to " << server_hostname << G4endl; |
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| 258 | // #endif |
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| 259 | |
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| 260 | |
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| 261 | //----- connection and binding |
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| 262 | memset( (char *)&server_address, '\0', sizeof(server_address)) ; |
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| 263 | // clear server_address |
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| 264 | server_address.sin_family = AF_INET ; |
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| 265 | server_address.sin_port = htons( PORT_NUMBER ); |
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| 266 | memcpy( (char *)(&server_address.sin_addr ), |
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| 267 | (char *)( server_host_p->h_addr ), |
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| 268 | server_host_p->h_length ); |
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| 269 | |
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| 270 | int connection_status = -1 ; |
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| 271 | int num_trial = 0 ; |
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| 272 | while( connection_status < 0 && num_trial <= MAX_CONNECT_TRIAL ) { |
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| 273 | num_trial++ ; |
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| 274 | connection_status = connect( fSocketFd, (struct sockaddr * )(&server_address), sizeof( server_address ) ) ; |
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| 275 | if( connection_status <0 ) |
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| 276 | { |
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| 277 | #if defined DEBUG_CLIENT_SERVER |
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| 278 | Err("G4FRClientServer::ConnectINET(),connect => RETRY"); |
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| 279 | #endif |
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| 280 | flag_connected = 0 ; |
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| 281 | } else { |
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| 282 | flag_connected = 1 ; |
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| 283 | break ; |
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| 284 | } |
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| 285 | |
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| 286 | sleep(1); |
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| 287 | |
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| 288 | } // while(connection_status...) |
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| 289 | |
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| 290 | //----- return status of connection |
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| 291 | return flag_connected ; |
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| 292 | |
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| 293 | } // G4FRClientServer::ConnectINET() |
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| 294 | |
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| 295 | |
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| 296 | //----- G4FRClientServer::WaitSendBack() |
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| 297 | void G4FRClientServer::WaitSendBack( const char* command_string ) |
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| 298 | { |
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| 299 | //----- wait for sending back |
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| 300 | while(1) { |
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| 301 | this->ReceiveLine(); |
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| 302 | |
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| 303 | if( !strncmp( this->GetReceivedMessage(), \ |
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| 304 | command_string , \ |
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| 305 | (strlen(command_string)) ) ) |
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| 306 | { |
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| 307 | break; |
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| 308 | } else { |
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| 309 | sleep(2); |
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| 310 | } |
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| 311 | |
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| 312 | } // while |
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| 313 | |
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| 314 | //----- clear buffer to receive message |
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| 315 | this->ClearReceivedMessage(); |
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| 316 | |
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| 317 | } // G4FRClientServer::WaitSendBack() |
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| 318 | |
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| 319 | #endif // G4VIS_BUILD_DAWN_DRIVER |
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