1 /** 2 * @file net/sock.c Networking sockets code 3 * 4 * Copyright (C) 2010 Creytiv.com 5 */ 6 #include <re_types.h> 7 #include <re_fmt.h> 8 #include <re_mbuf.h> 9 #include <re_net.h> 10 11 12 #define DEBUG_MODULE "netsock" 13 #define DEBUG_LEVEL 5 14 #include <re_dbg.h> 15 16 17 static bool inited = false; 18 19 20 #ifdef WIN32 wsa_init(void)21static int wsa_init(void) 22 { 23 WORD wVersionRequested = MAKEWORD(2, 2); 24 WSADATA wsaData; 25 int err; 26 27 err = WSAStartup(wVersionRequested, &wsaData); 28 if (err != 0) { 29 DEBUG_WARNING("Could not load winsock (%m)\n", err); 30 return err; 31 } 32 33 /* Confirm that the WinSock DLL supports 2.2.*/ 34 /* Note that if the DLL supports versions greater */ 35 /* than 2.2 in addition to 2.2, it will still return */ 36 /* 2.2 in wVersion since that is the version we */ 37 /* requested. */ 38 if (LOBYTE(wsaData.wVersion) != 2 || 39 HIBYTE(wsaData.wVersion) != 2 ) { 40 WSACleanup(); 41 DEBUG_WARNING("Bad winsock verion (%d.%d)\n", 42 HIBYTE(wsaData.wVersion), 43 LOBYTE(wsaData.wVersion)); 44 return EINVAL; 45 } 46 47 return 0; 48 } 49 #endif 50 51 52 /** 53 * Initialise network sockets 54 * 55 * @return 0 if success, otherwise errorcode 56 */ net_sock_init(void)57int net_sock_init(void) 58 { 59 int err = 0; 60 61 DEBUG_INFO("sock init: inited=%d\n", inited); 62 63 if (inited) 64 return 0; 65 66 #ifdef WIN32 67 err = wsa_init(); 68 #endif 69 70 inited = true; 71 72 return err; 73 } 74 75 76 /** 77 * Cleanup network sockets 78 */ net_sock_close(void)79void net_sock_close(void) 80 { 81 #ifdef WIN32 82 const int err = WSACleanup(); 83 if (0 != err) { 84 DEBUG_WARNING("sock close: WSACleanup (%d)\n", err); 85 } 86 #endif 87 88 inited = false; 89 90 DEBUG_INFO("sock close\n"); 91 } 92