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1 /*
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2 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include <iostream>
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26 #include <winsock2.h>
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27
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28 using namespace std;
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29
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30 void
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31 initWinsock()
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32 {
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33 static int initted = 0;
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34 WORD wVersionRequested;
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35 WSADATA wsaData;
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36 int err;
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37
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38 if (!initted) {
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39 wVersionRequested = MAKEWORD( 2, 0 );
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40
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41 err = WSAStartup( wVersionRequested, &wsaData );
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42 if ( err != 0 ) {
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43 {
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44 /* Tell the user that we couldn't find a usable */
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45 /* WinSock DLL. */
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46 cerr << "SocketBase::SocketBase: unable to find usable "
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47 << "WinSock DLL" << endl;
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48 exit(1);
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49 }
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50 }
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51
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52 /* Confirm that the WinSock DLL supports 2.0.*/
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53 /* Note that if the DLL supports versions greater */
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54 /* than 2.0 in addition to 2.0, it will still return */
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55 /* 2.0 in wVersion since that is the version we */
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56 /* requested. */
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57
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58 if ( LOBYTE( wsaData.wVersion ) != 2 ||
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59 HIBYTE( wsaData.wVersion ) != 0 ) {
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60 /* Tell the user that we couldn't find a usable */
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61 /* WinSock DLL. */
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62 {
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63 cerr << "Unable to find suitable version of WinSock DLL" << endl;
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64 WSACleanup( );
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65 exit(1);
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66 }
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67 }
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68
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69 initted = 1;
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70 }
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71 }
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