1 | /**
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2 | * @file cf_socket.c
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3 | * @author myusgun <myusgun@gmail.com>
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4 | * @version 0.1
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5 | */
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6 | #include "cf_socket.h"
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7 | #include "cf_local.h"
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8 |
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9 | #ifdef _WIN32
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10 | # pragma comment (lib, "ws2_32.lib")
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11 | # define close(__sock) closesocket(__sock)
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12 | # define sa_family_t unsigned short
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13 | #else
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14 | #endif
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15 |
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16 | #include <string.h>
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17 |
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18 | #define CHECK_SOCKET_INIT() \
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19 | if (!CF_Socket_IsInitialized ()) \
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20 | return CF_ERROR_SOCKET_NOT_INITIALIZED
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21 |
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22 | #define CHECK_INVALID_SOCKET(__sock) \
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23 | if (__sock < 0) \
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24 | return CF_ERROR_SOCKET_INVALID_SOCKET
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25 |
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26 | CF_BOOL gInitialized = CF_FALSE;
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27 |
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28 | CF_BOOL
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29 | CF_Socket_IsInitialized (void)
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30 | {
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31 | return gInitialized;
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32 | }
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33 |
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34 | int
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35 | CF_Socket_Initialize (void)
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36 | {
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37 | int result = 0;
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38 |
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39 | #ifdef WIN32
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40 | WSADATA winsockData;
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41 | result = WSAStartup (MAKEWORD (2, 0), &winsockData);
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42 | #endif
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43 | gInitialized = CF_TRUE;
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44 |
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45 | if (result != 0)
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46 | return CF_ERROR_SOCKET_INITIALIZE;
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47 |
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48 | return CF_OK;
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49 | }
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50 |
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51 | int
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52 | CF_Socket_Finalize (void)
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53 | {
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54 | int result = 0;
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55 |
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56 | CHECK_SOCKET_INIT ();
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57 |
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58 | #ifdef WIN32
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59 | result = WSACleanup ();
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60 | #endif
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61 | if (result != 0)
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62 | return CF_ERROR_SOCKET_FINALIZE;
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63 |
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64 | return CF_OK;
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65 | }
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66 |
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67 | int
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68 | CF_Socket_Close (const int sock)
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69 | {
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70 | int result = 0;
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71 |
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72 | CHECK_INVALID_SOCKET (sock);
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73 |
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74 | result = close (sock);
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75 |
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76 | if (result != 0)
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77 | return CF_ERROR_SOCKET_CLOSE;
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78 |
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79 | return CF_OK;
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80 | }
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81 |
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82 | int
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83 | CF_Socket_SetOption (const int sock,
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84 | const int optname,
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85 | const void * optval,
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86 | const size_t optlen)
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87 | {
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88 | int result = 0;
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89 |
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90 | CHECK_INVALID_SOCKET (sock);
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91 |
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92 | result = setsockopt (sock,
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93 | SOL_SOCKET,
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94 | optname,
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95 | #ifdef _WIN32
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96 | (char *) optval,
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97 | #else
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98 | optval,
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99 | #endif
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100 | (socklen_t) optlen);
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101 | if (result < 0)
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102 | return CF_ERROR_SOCKET_SET_OPTION;
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103 |
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104 | return CF_OK;
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105 | }
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106 |
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107 | int
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108 | CF_Socket_GetOption (const int sock,
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109 | const int optname,
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110 | void * optval,
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111 | size_t * optlen)
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112 | {
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113 | int result = 0;
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114 |
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115 | CHECK_INVALID_SOCKET (sock);
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116 |
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117 | result = getsockopt (sock,
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118 | SOL_SOCKET,
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119 | optname,
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120 | #ifdef _WIN32
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121 | (char *) optval,
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122 | #else
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123 | optval,
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124 | #endif
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125 | (socklen_t *) optlen);
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126 | if (result < 0)
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127 | return CF_ERROR_SOCKET_GET_OPTION;
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128 |
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129 | return CF_OK;
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130 | }
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131 |
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132 | int
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133 | CF_Socket_SetTimeout (const int sock,
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134 | const int timeout)
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135 | {
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136 | int result = 0;
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137 |
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138 | #ifdef _WIN32
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139 | int time_ms = timeout * 1000;
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140 | #else
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141 | struct timeval timeval;
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142 | timeval.tv_sec = timeout;
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143 | timeval.tv_usec= 0;
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144 | #endif
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145 |
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146 | CHECK_INVALID_SOCKET (sock);
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147 |
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148 | if (timeout < 0)
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149 | return CF_ERROR_SOCKET_INVALID_ARGS;
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150 |
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151 | result = CF_Socket_SetOption (sock,
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152 | SO_RCVTIMEO,
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153 | #ifdef _WIN32
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154 | &time_ms,
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155 | sizeof (time_ms));
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156 | #else
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157 | &timeval,
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158 | sizeof (timeval));
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159 | #endif
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160 | if (result < 0)
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161 | return CF_ERROR_SOCKET_SET_TIMEOUT;
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162 | /*----------------------------------------------------------------*/
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163 |
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164 | return CF_OK;
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165 | }
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166 |
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167 | int
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168 | CF_Socket_Connect (const char * ip,
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169 | const unsigned short port)
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170 | {
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171 | int result = 0;
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172 | int sock = 0;
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173 | struct sockaddr_in address;
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174 | struct hostent * hostEnt;
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175 |
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176 | CHECK_SOCKET_INIT ();
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177 |
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178 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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179 | if (sock < 0)
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180 | return CF_ERROR_SOCKET_CREATE;
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181 |
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182 | address.sin_family = AF_INET;
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183 | address.sin_port = htons (port);
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184 | address.sin_addr.s_addr = inet_addr (ip);
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185 |
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186 | TRY
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187 | {
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188 | if (address.sin_addr.s_addr == (unsigned int)-1)
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189 | {
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190 | hostEnt = gethostbyname (ip);
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191 | if (hostEnt == NULL)
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192 | {
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193 | result = CF_ERROR_SOCKET_GET_HOST;
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194 | TRY_BREAK;
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195 | }
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196 |
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197 | address.sin_family = (sa_family_t) hostEnt->h_addrtype;
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198 | memcpy (&(address.sin_addr.s_addr), hostEnt->h_addr, (size_t) hostEnt->h_length);
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199 | }
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200 |
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201 | result = connect (sock, (struct sockaddr *) &address, sizeof (address));
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202 | if (result < 0)
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203 | {
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204 | result = CF_ERROR_SOCKET_CONNECT;
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205 | TRY_BREAK;
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206 | }
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207 | }
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208 | CATCH_IF (result < 0)
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209 | {
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210 | CF_Socket_Close (sock);
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211 | return result;
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212 | }
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213 |
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214 | return sock;
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215 | }
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216 |
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217 | int
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218 | CF_Socket_Server (const unsigned short port,
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219 | const int backlog)
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220 | {
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221 | int result = 0;
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222 | int sock = 0;
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223 | struct sockaddr_in address;
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224 |
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225 | CHECK_SOCKET_INIT ();
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226 |
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227 | sock = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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228 | if (sock < 0)
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229 | return CF_ERROR_SOCKET_CREATE;
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230 |
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231 | address.sin_family = AF_INET;
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232 | address.sin_addr.s_addr = htonl (INADDR_ANY);
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233 | address.sin_port = htons (port);
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234 |
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235 | TRY {
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236 | result = bind (sock, (struct sockaddr *) &address, sizeof (struct sockaddr));
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237 | if (result < 0)
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238 | {
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239 | result = CF_ERROR_SOCKET_BIND;
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240 | TRY_BREAK;
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241 | }
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242 |
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243 | result = listen (sock, backlog);
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244 | if (result < 0)
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245 | {
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246 | result = CF_ERROR_SOCKET_LISTEN;
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247 | TRY_BREAK;
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248 | }
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249 | }
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250 | CATCH_IF (result < 0)
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251 | {
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252 | CF_Socket_Close (sock);
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253 | return result;
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254 | }
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255 |
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256 | return sock;
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257 | }
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258 |
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259 | int
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260 | CF_Socket_Accept (const int sock,
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261 | struct sockaddr_in * address)
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262 | {
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263 | int sockClient;
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264 | struct sockaddr_in remoteAddress;
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265 | socklen_t len = sizeof (remoteAddress);
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266 |
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267 | CHECK_INVALID_SOCKET (sock);
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268 |
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269 | sockClient = accept (sock, (struct sockaddr *) &remoteAddress, &len);
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270 | if (sockClient < 0)
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271 | return CF_ERROR_SOCKET_ACCEPT;
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272 |
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273 | if (address != NULL)
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274 | memcpy ((void *) address, (void *) &remoteAddress, sizeof (struct sockaddr_in));
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275 |
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276 | return sockClient;
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277 | }
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278 |
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279 | int
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280 | CF_Socket_Send (const int sock,
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281 | const void * buf,
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282 | const int len)
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283 | {
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284 | int result = 0;
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285 |
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286 | CHECK_INVALID_SOCKET (sock);
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287 |
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288 | result = (int) send (sock, buf, (size_t) len, 0);
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289 | if (result != len)
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290 | return CF_ERROR_SOCKET_SEND;
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291 |
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292 | return CF_OK;
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293 | }
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294 |
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295 | int
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296 | CF_Socket_Recv (const int sock,
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297 | void * buf,
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298 | const int len)
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299 | {
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300 | int result = 0;
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301 |
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302 | CHECK_INVALID_SOCKET (sock);
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303 |
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304 | result = (int) recv (sock, buf, (size_t) len, 0);
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305 | if (result < 0)
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306 | return CF_ERROR_SOCKET_RECV;
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307 |
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308 | return result;
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309 | }
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