| 1 | /* |
| 2 | Copyright (C) 2002-2004 MySQL AB |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or modify |
| 5 | it under the terms of version 2 of the GNU General Public License as |
| 6 | published by the Free Software Foundation. |
| 7 | |
| 8 | There are special exceptions to the terms and conditions of the GPL |
| 9 | as it is applied to this software. View the full text of the |
| 10 | exception in file EXCEPTIONS-CONNECTOR-J in the directory of this |
| 11 | software distribution. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | |
| 22 | |
| 23 | |
| 24 | */ |
| 25 | package com.mysql.jdbc; |
| 26 | |
| 27 | import java.io.IOException; |
| 28 | |
| 29 | import java.lang.reflect.Constructor; |
| 30 | import java.lang.reflect.InvocationTargetException; |
| 31 | import java.lang.reflect.Method; |
| 32 | |
| 33 | import java.net.InetAddress; |
| 34 | import java.net.Socket; |
| 35 | import java.net.SocketException; |
| 36 | |
| 37 | import java.util.Properties; |
| 38 | |
| 39 | /** |
| 40 | * Socket factory for vanilla TCP/IP sockets (the standard) |
| 41 | * |
| 42 | * @author Mark Matthews |
| 43 | */ |
| 44 | public class StandardSocketFactory implements SocketFactory { |
| 45 | // ~ Instance fields |
| 46 | // -------------------------------------------------------- |
| 47 | |
| 48 | /** The hostname to connect to */ |
| 49 | protected String host = null; |
| 50 | |
| 51 | /** The port number to connect to */ |
| 52 | protected int port = 3306; |
| 53 | |
| 54 | /** The underlying TCP/IP socket to use */ |
| 55 | protected Socket rawSocket = null; |
| 56 | |
| 57 | // ~ Methods |
| 58 | // ---------------------------------------------------------------- |
| 59 | |
| 60 | /** |
| 61 | * Called by the driver after issuing the MySQL protocol handshake and |
| 62 | * reading the results of the handshake. |
| 63 | * |
| 64 | * @throws SocketException |
| 65 | * if a socket error occurs |
| 66 | * @throws IOException |
| 67 | * if an I/O error occurs |
| 68 | * |
| 69 | * @return The socket to use after the handshake |
| 70 | */ |
| 71 | public Socket afterHandshake() throws SocketException, IOException { |
| 72 | return this.rawSocket; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Called by the driver before issuing the MySQL protocol handshake. Should |
| 77 | * return the socket instance that should be used during the handshake. |
| 78 | * |
| 79 | * @throws SocketException |
| 80 | * if a socket error occurs |
| 81 | * @throws IOException |
| 82 | * if an I/O error occurs |
| 83 | * |
| 84 | * @return the socket to use before the handshake |
| 85 | */ |
| 86 | public Socket beforeHandshake() throws SocketException, IOException { |
| 87 | return this.rawSocket; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * @see com.mysql.jdbc.SocketFactory#createSocket(Properties) |
| 92 | */ |
| 93 | public Socket connect(String hostname, int portNumber, Properties props) |
| 94 | throws SocketException, IOException { |
| 95 | |
| 96 | if (props != null) { |
| 97 | this.host = hostname; |
| 98 | |
| 99 | this.port = portNumber; |
| 100 | |
| 101 | boolean hasConnectTimeoutMethod = false; |
| 102 | |
| 103 | Method connectWithTimeoutMethod = null; |
| 104 | |
| 105 | try { |
| 106 | // Have to do this with reflection, otherwise older JVMs croak |
| 107 | Class socketAddressClass = Class |
| 108 | .forName("java.net.SocketAddress"); |
| 109 | |
| 110 | connectWithTimeoutMethod = Socket.class.getMethod("connect", |
| 111 | new Class[] { socketAddressClass, Integer.TYPE }); |
| 112 | |
| 113 | hasConnectTimeoutMethod = true; |
| 114 | } catch (NoClassDefFoundError noClassDefFound) { |
| 115 | hasConnectTimeoutMethod = false; |
| 116 | } catch (NoSuchMethodException noSuchMethodEx) { |
| 117 | hasConnectTimeoutMethod = false; |
| 118 | } catch (Throwable catchAll) { |
| 119 | hasConnectTimeoutMethod = false; |
| 120 | } |
| 121 | |
| 122 | int connectTimeout = 0; |
| 123 | |
| 124 | String connectTimeoutStr = props.getProperty("connectTimeout"); |
| 125 | |
| 126 | if (connectTimeoutStr != null) { |
| 127 | try { |
| 128 | connectTimeout = Integer.parseInt(connectTimeoutStr); |
| 129 | } catch (NumberFormatException nfe) { |
| 130 | throw new SocketException("Illegal value '" |
| 131 | + connectTimeoutStr + "' for connectTimeout"); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | if (this.host != null) { |
| 136 | if (!hasConnectTimeoutMethod || (connectTimeout == 0)) { |
| 137 | InetAddress[] possibleAddresses = InetAddress |
| 138 | .getAllByName(this.host); |
| 139 | |
| 140 | Exception caughtWhileConnecting = null; |
| 141 | |
| 142 | // Need to loop through all possible addresses, in case |
| 143 | // someone has IPV6 configured (SuSE, for example...) |
| 144 | |
| 145 | for (int i = 0; i < possibleAddresses.length; i++) { |
| 146 | try { |
| 147 | rawSocket = new Socket(possibleAddresses[i], port); |
| 148 | |
| 149 | break; |
| 150 | } catch (Exception ex) { |
| 151 | caughtWhileConnecting = ex; |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | if (rawSocket == null) { |
| 156 | throw new SocketException(caughtWhileConnecting |
| 157 | .toString()); |
| 158 | } |
| 159 | } else { |
| 160 | // must explicitly state this due to classloader issues |
| 161 | // when running on older JVMs :( |
| 162 | try { |
| 163 | Class inetSocketAddressClass = Class |
| 164 | .forName("java.net.InetSocketAddress"); |
| 165 | Constructor addrConstructor = inetSocketAddressClass |
| 166 | .getConstructor(new Class[] { String.class, |
| 167 | Integer.TYPE }); |
| 168 | |
| 169 | InetAddress[] possibleAddresses = InetAddress |
| 170 | .getAllByName(this.host); |
| 171 | |
| 172 | Exception caughtWhileConnecting = null; |
| 173 | |
| 174 | // Need to loop through all possible addresses, in case |
| 175 | // someone has IPV6 configured (SuSE, for example...) |
| 176 | |
| 177 | for (int i = 0; i < possibleAddresses.length; i++) { |
| 178 | |
| 179 | try { |
| 180 | Object sockAddr = addrConstructor |
| 181 | .newInstance(new Object[] { this.host, |
| 182 | new Integer(port) }); |
| 183 | |
| 184 | rawSocket = new Socket(); |
| 185 | connectWithTimeoutMethod.invoke(rawSocket, |
| 186 | new Object[] { sockAddr, |
| 187 | new Integer(connectTimeout) }); |
| 188 | |
| 189 | break; |
| 190 | } catch (Exception ex) { |
| 191 | rawSocket = null; |
| 192 | |
| 193 | caughtWhileConnecting = ex; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | if (rawSocket == null) { |
| 198 | throw new SocketException(caughtWhileConnecting |
| 199 | .toString()); |
| 200 | } |
| 201 | |
| 202 | } catch (Throwable t) { |
| 203 | if (!(t instanceof SocketException)) { |
| 204 | throw new SocketException(t.toString()); |
| 205 | } |
| 206 | |
| 207 | throw (SocketException) t; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | try { |
| 212 | this.rawSocket.setTcpNoDelay(true); |
| 213 | } catch (Exception ex) { |
| 214 | /* Ignore */ |
| 215 | ; |
| 216 | } |
| 217 | |
| 218 | return this.rawSocket; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | throw new SocketException("Unable to create socket"); |
| 223 | } |
| 224 | } |