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 1.7 2010/11/11 01:13:42 akimura Exp $ |
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28 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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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 "G4VisManager.hh" |
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41 | #include "G4FRClientServer.hh" |
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42 | |
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43 | // #define DEBUG_CLIENT_SERVER |
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44 | |
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45 | #include<sys/param.h> |
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46 | |
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47 | //----- const |
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48 | const char DEFAULT_SUN_PATH[] = "FR_TMP3" ; |
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49 | const int DEFAULT_PORT_NUMBER = 40701 ; |
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50 | //const char FR_ENV_SERVER_HOST_NAME[] = "G4DAWN_HOST_NAME" ; // moved to .hh |
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51 | const int MAX_BINDING_TRIAL = 10 ; |
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52 | const int BINDING_TRIAL_INTERVAL = 5 ; |
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53 | const int MAX_CONNECT_TRIAL = 10 ; |
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54 | const char FR_DEFAULT_HOST_NAME[] = "localhost" ; |
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55 | |
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56 | //----- G4FRClientServer::G4FRClientServer () |
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57 | G4FRClientServer::G4FRClientServer ( char terminator , char end_line ) : |
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58 | TERMINATOR ( terminator ) , |
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59 | END_OF_LINE( end_line ) , |
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60 | fSocketFd ( -1 ) |
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61 | { |
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62 | SetSunPath ( DEFAULT_SUN_PATH ) ; // for Unix domain |
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63 | SetPortNumber ( DEFAULT_PORT_NUMBER ) ; |
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64 | ClearReceivedMessage () ; |
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65 | } |
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66 | |
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67 | |
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68 | //----- G4FRClientServer::ConnectUnix() |
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69 | int G4FRClientServer::ConnectUnix() |
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70 | { |
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71 | //----- local |
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72 | int flag_connected = 0 ; |
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73 | struct sockaddr_un server_address ; |
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74 | |
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75 | //----- make socket |
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76 | fSocketFd = socket( AF_UNIX, SOCK_STREAM, 0 ); |
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77 | if( fSocketFd < 0 ) { Err("G4FRClientServer::ConnectUnix(),socket"); } |
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78 | |
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79 | //----- set server address |
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80 | memset( (char *)&server_address, '\0', sizeof(server_address)) ; |
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81 | server_address.sun_family = AF_UNIX ; |
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82 | strcpy( server_address.sun_path, SUN_PATH ); |
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83 | |
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84 | //----- connection |
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85 | int connection_status = -1 ; |
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86 | int num_trial = 0 ; |
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87 | while( connection_status < 0 && num_trial <= MAX_CONNECT_TRIAL ) { |
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88 | num_trial++ ; |
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89 | connection_status = connect( fSocketFd, (struct sockaddr * )(&server_address), sizeof( server_address ) ) ; |
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90 | if( connection_status <0 ) |
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91 | { |
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92 | #if defined DEBUG_CLIENT_SERVER |
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93 | Err("G4FRClientServer::ConnectUnix(),connect => RETRY"); |
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94 | #endif |
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95 | flag_connected = 0 ; |
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96 | } else { |
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97 | flag_connected = 1 ; |
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98 | break ; |
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99 | } |
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100 | |
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101 | sleep(1); |
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102 | |
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103 | } // while(connection_status...) |
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104 | |
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105 | //----- return status of connection |
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106 | return flag_connected ; |
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107 | |
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108 | } // G4FRClientServer::ConnectUnix() |
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109 | |
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110 | |
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111 | //----- G4FRClientServer::Receive() |
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112 | void G4FRClientServer::Receive() |
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113 | { |
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114 | //----- |
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115 | ClearReceivedMessage () ; |
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116 | if( recv( fSocketFd, fReceivedMessage, G4FRClientServer::RECV_BUFMAX , 0 ) < 0 ) |
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117 | { |
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118 | Err("G4FRClientServer::Receive(), recv"); |
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119 | } |
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120 | |
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121 | #if defined DEBUG_CLIENT_SERVER |
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122 | if (G4VisManager::GetVerbosity() >= G4VisManager::errors) |
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123 | G4cout << ">>>>> receivedMessage = " << fReceivedMessage << G4endl; |
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124 | #endif |
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125 | |
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126 | } |
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127 | |
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128 | |
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129 | //----- G4FRClientServer::ReceiveLine() |
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130 | void G4FRClientServer::ReceiveLine() |
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131 | { |
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132 | //----- local |
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133 | char buf[1]; |
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134 | int index = 0 ; |
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135 | |
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136 | //----- receive a line (until newline) |
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137 | memset(fReceivedMessage, '\0', RECV_BUFMAX) ; |
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138 | while( read( fSocketFd, buf, 1 ) == 1 ) { |
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139 | fReceivedMessage[index++] = buf[0]; |
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140 | if( IsEndOfLine(buf[0]) ) { break ;} |
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141 | } |
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142 | } // G4FRClientServer::ReceiveLine() |
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143 | |
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144 | |
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145 | //----- G4FRClientServer::Send() |
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146 | void G4FRClientServer::Send() |
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147 | { |
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148 | if( send( fSocketFd, fSendingMessage, strlen(fSendingMessage) , 0 ) < 0 ) |
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149 | { |
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150 | Err("G4FRClientServer::Send(), send"); |
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151 | } |
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152 | |
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153 | #if defined DEBUG_CLIENT_SERVER |
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154 | if (G4VisManager::GetVerbosity() >= G4VisManager::errors) |
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155 | G4cout << "<<<<< SentMessage = " << fSendingMessage << G4endl; |
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156 | #endif |
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157 | |
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158 | } // G4FRClientServer::Send() |
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159 | |
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160 | |
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161 | //----- G4FRClientServer::Send( message ) |
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162 | void G4FRClientServer::Send( const char* message ) |
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163 | { |
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164 | this->SetSendingMessage( message ) ; |
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165 | this->Send(); |
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166 | |
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167 | } // G4FRClientServer::Send( message ) |
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168 | |
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169 | |
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170 | //----- G4FRClientServer::SendLine() |
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171 | void G4FRClientServer::SendLine( const char* message ) |
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172 | { |
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173 | //----- local |
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174 | int smsg_length ; |
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175 | |
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176 | //----- set message to sending buf |
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177 | this->SetSendingMessage( message ) ; |
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178 | smsg_length = GetSendingMessageLength() ; |
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179 | |
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180 | //----- add newline if necessary |
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181 | if( !IsEndOfLine( fSendingMessage[ (smsg_length - 1)] ) ) { |
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182 | fSendingMessage[ smsg_length ] = GetEndOfLine() ; |
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183 | fSendingMessage[ (smsg_length +1) ] = '\0' ; |
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184 | smsg_length = GetSendingMessageLength(); |
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185 | } |
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186 | |
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187 | //----- send |
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188 | this->Send(); |
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189 | |
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190 | }// G4FRClientServer::SendLine() |
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191 | |
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192 | |
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193 | //----- G4FRClientServer::DisConnect() |
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194 | void G4FRClientServer::DisConnect() |
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195 | { |
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196 | //----- close connection |
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197 | if( shutdown(fSocketFd,2) < 0 ) { |
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198 | Err("G4FRClientServer::DisConnect,shutdown"); |
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199 | } |
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200 | close( fSocketFd ); |
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201 | |
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202 | this->Clear(); |
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203 | } |
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204 | |
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205 | |
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206 | |
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207 | //----- G4FRClientServer::Clear() |
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208 | void G4FRClientServer::Clear() |
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209 | { |
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210 | unlink(SUN_PATH) ; |
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211 | fSocketFd = -1 ; |
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212 | } |
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213 | |
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214 | |
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215 | //----- G4FRClientServer::ConnectINET() |
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216 | int G4FRClientServer::ConnectINET() |
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217 | { |
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218 | //----- local |
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219 | int flag_connected = 0 ; |
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220 | sockaddr_in server_address ; |
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221 | char server_hostname[32] ; |
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222 | hostent* server_host_p ; |
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223 | |
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224 | //----- make socket |
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225 | fSocketFd = socket( AF_INET, SOCK_STREAM, 0 ); |
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226 | if( fSocketFd < 0 ) { |
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227 | #if defined DEBUG_CLIENT_SERVER |
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228 | Err("G4FRClientServer::ConnectINET(),socket"); |
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229 | #endif |
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230 | } |
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231 | |
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232 | //----- get IP address of server from its name |
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233 | if( getenv( FR_ENV_SERVER_HOST_NAME ) != NULL ) |
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234 | { |
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235 | //----- get server name |
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236 | strcpy( server_hostname, getenv( FR_ENV_SERVER_HOST_NAME ) ); |
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237 | |
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238 | //----- get IP address of server from its name, |
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239 | //..... reading /etc/hosts |
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240 | server_host_p = gethostbyname( server_hostname ) ; |
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241 | |
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242 | //----- If the host specified by FR_ENV_SERVER_HOST_NAME |
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243 | //..... is not written in /etc/hosts, |
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244 | //...... server host is set to the same as the |
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245 | //...... client host |
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246 | if( !server_host_p ) { |
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247 | #if defined DEBUG_CLIENT_SERVER |
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248 | Err("G4FRClientServer::ConnectINET(), gethostbyname"); |
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249 | #endif |
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250 | server_host_p = gethostbyname( FR_DEFAULT_HOST_NAME ) ; |
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251 | } |
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252 | |
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253 | } else { |
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254 | server_host_p = gethostbyname( FR_DEFAULT_HOST_NAME ) ; |
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255 | } |
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256 | |
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257 | |
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258 | |
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259 | // #if defined DEBUG_CLIENT_SERVER |
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260 | if (G4VisManager::GetVerbosity() >= G4VisManager::errors) |
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261 | G4cout << "***** Trying connection to " << server_hostname << G4endl; |
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262 | // #endif |
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263 | |
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264 | |
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265 | //----- connection and binding |
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266 | memset( (char *)&server_address, '\0', sizeof(server_address)) ; |
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267 | // clear server_address |
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268 | server_address.sin_family = AF_INET ; |
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269 | server_address.sin_port = htons( PORT_NUMBER ); |
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270 | memcpy( (char *)(&server_address.sin_addr ), |
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271 | (char *)( server_host_p->h_addr ), |
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272 | server_host_p->h_length ); |
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273 | |
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274 | int connection_status = -1 ; |
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275 | int num_trial = 0 ; |
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276 | while( connection_status < 0 && num_trial <= MAX_CONNECT_TRIAL ) { |
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277 | num_trial++ ; |
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278 | connection_status = connect( fSocketFd, (struct sockaddr * )(&server_address), sizeof( server_address ) ) ; |
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279 | if( connection_status <0 ) |
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280 | { |
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281 | #if defined DEBUG_CLIENT_SERVER |
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282 | Err("G4FRClientServer::ConnectINET(),connect => RETRY"); |
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283 | #endif |
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284 | flag_connected = 0 ; |
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285 | } else { |
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286 | flag_connected = 1 ; |
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287 | break ; |
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288 | } |
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289 | |
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290 | sleep(1); |
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291 | |
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292 | } // while(connection_status...) |
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293 | |
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294 | //----- return status of connection |
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295 | return flag_connected ; |
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296 | |
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297 | } // G4FRClientServer::ConnectINET() |
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298 | |
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299 | |
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300 | //----- G4FRClientServer::WaitSendBack() |
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301 | void G4FRClientServer::WaitSendBack( const char* command_string ) |
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302 | { |
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303 | //----- wait for sending back |
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304 | while(1) { |
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305 | this->ReceiveLine(); |
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306 | |
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307 | if( !strncmp( this->GetReceivedMessage(), \ |
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308 | command_string , \ |
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309 | (strlen(command_string)) ) ) |
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310 | { |
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311 | break; |
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312 | } else { |
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313 | sleep(2); |
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314 | } |
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315 | |
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316 | } // while |
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317 | |
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318 | //----- clear buffer to receive message |
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319 | this->ClearReceivedMessage(); |
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320 | |
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321 | } // G4FRClientServer::WaitSendBack() |
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322 | |
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323 | #endif // G4VIS_BUILD_DAWN_DRIVER |
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