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1 /*******************************************************************************
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2 copyright: Copyright (c) 2006 Juan Jose Comellas. All rights reserved
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3 license: BSD style: $(LICENSE)
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4 author: Juan Jose Comellas <juanjo@comellas.com.ar>
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5 *******************************************************************************/
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6
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7 private
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8 {
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9 version (Posix)
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10 {
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11 import tango.io.selector.PollSelector;
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12 }
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13 else version (linux)
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14 {
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15 import tango.io.selector.EpollSelector;
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16 import tango.sys.linux.linux;
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17 }
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18
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19 import tango.io.selector.model.ISelector;
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20 import tango.io.selector.Selector;
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21 import tango.io.selector.SelectSelector;
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22 import tango.io.selector.SelectorException;
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23 import tango.io.Conduit;
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24 import tango.net.Socket;
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25 import tango.net.SocketConduit;
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26 import tango.net.ServerSocket;
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27 import tango.time.Clock;
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28 import tango.util.log.Log;
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29 import tango.util.log.ConsoleAppender;
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30 import tango.util.log.DateLayout;
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31 import tango.text.convert.Sprint;
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32 import tango.core.Exception;
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33 import tango.core.Thread;
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34 import tango.sys.Common;
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35 import tango.stdc.errno;
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36 }
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37
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38
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39 const uint HANDLE_COUNT = 4;
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40 const uint EVENT_COUNT = 4;
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41 const uint LOOP_COUNT = 50000;
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42 const char[] SERVER_ADDR = "127.0.0.1";
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43 const ushort SERVER_PORT = 4000;
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44 const uint MAX_LENGTH = 16;
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45
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46 int main(char[][] args)
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47 {
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48 Logger log = Log.getLogger("selector");
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49 Sprint!(char) sprint = new Sprint!(char)(256);
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50
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51 log.addAppender(new ConsoleAppender(new DateLayout()));
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52
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53 ISelector selector;
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54
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55 for (int i = 0; i < 1; i++)
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56 {
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57 // Testing the SelectSelector
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58 log.info(sprint("Pass {0}: Testing the select-based selector", i + 1));
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59 selector = new SelectSelector();
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60 testSelector(selector);
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61 }
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62
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63 // Testing the PollSelector
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64 version (Posix)
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65 {
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66 for (int i = 0; i < 1; i++)
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67 {
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68 log.info(sprint("Pass {0}: Testing the poll-based selector", i + 1));
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69 selector = new PollSelector();
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70 testSelector(selector);
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71 }
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72 }
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73
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74 // Testing the EpollSelector
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75 version (linux)
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76 {
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77 for (int i = 0; i < 1; i++)
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78 {
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79 log.info(sprint("Pass {0}: Testing the epoll-based selector", i + 1));
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80 selector = new EpollSelector();
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81 testSelector(selector);
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82 }
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83 }
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84
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85 return 0;
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86 }
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87
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88
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89 /**
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90 * Create a server socket and run the Selector on it.
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91 */
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92 void testSelector(ISelector selector)
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93 {
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94 Logger log = Log.getLogger("selector.server");
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95 Sprint!(char) sprint = new Sprint!(char)(512);
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96
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97 uint connectCount = 0;
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98 uint receiveCount = 0;
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99 uint sendCount = 0;
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100 uint failedConnectCount = 0;
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101 uint failedReceiveCount = 0;
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102 uint failedSendCount = 0;
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103 uint closeCount = 0;
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104 uint errorCount = 0;
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105 Time start = Clock.now;
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106 Thread clientThread;
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107
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108 selector.open(HANDLE_COUNT, EVENT_COUNT);
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109
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110 clientThread = new Thread(&clientThreadFunc);
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111 clientThread.start();
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112
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113 try
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114 {
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115 TimeSpan timeout = TimeSpan.seconds(1);
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116 InternetAddress addr = new InternetAddress(SERVER_ADDR, SERVER_PORT);
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117 ServerSocket serverSocket = new ServerSocket(addr, 5);
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118 SocketConduit clientSocket;
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119 char[MAX_LENGTH] buffer;
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120 int eventCount;
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121 uint count;
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122 int i = 0;
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123
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124 debug (selector)
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125 log.trace("Registering server socket to Selector");
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126
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127 selector.register(serverSocket, Event.Read);
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128
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129 while (true)
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130 {
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131 debug (selector)
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132 log.trace(sprint("[{0}] Waiting for events from Selector", i));
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133
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134 eventCount = selector.select(timeout);
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135
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136 debug (selector)
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137 log.trace(sprint("[{0}] {1} events received from Selector", i, eventCount));
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138
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139 if (eventCount > 0)
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140 {
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141 foreach (SelectionKey selectionKey; selector.selectedSet())
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142 {
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143 debug (selector)
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144 log.trace(sprint("[{0}] Event mask for socket {1} is 0x{2:x4}",
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145 i, cast(int) selectionKey.conduit.fileHandle(),
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146 cast(uint) selectionKey.events));
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147
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148 if (selectionKey.isReadable())
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149 {
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150 if (selectionKey.conduit is serverSocket)
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151 {
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152 debug (selector)
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153 log.trace(sprint("[{0}] New connection from client", i));
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154
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155 clientSocket = serverSocket.accept();
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156 if (clientSocket !is null)
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157 {
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158 selector.register(clientSocket, Event.Read);
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159 connectCount++;
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160 }
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161 else
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162 {
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163 debug (selector)
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164 log.trace(sprint("[{0}] New connection attempt failed", i));
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165 failedConnectCount++;
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166 }
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167 }
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168 else
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169 {
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170 // Reading from a client socket
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171 debug (selector)
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172 log.trace(sprint("[{0}] Receiving message from client", i));
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173
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174 count = (cast(SocketConduit) selectionKey.conduit).read(buffer);
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175 if (count != IConduit.Eof)
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176 {
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177 debug (selector)
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178 log.trace(sprint("[{0}] Received {1} from client ({2} bytes)",
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179 i, buffer[0..count], count));
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180 selector.reregister(selectionKey.conduit, Event.Write);
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181 receiveCount++;
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182 }
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183 else
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184 {
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185 debug (selector)
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186 log.trace(sprint("[{0}] Handle {1} was closed; removing it from Selector",
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187 i, cast(int) selectionKey.conduit.fileHandle()));
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188 selector.unregister(selectionKey.conduit);
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189 (cast(SocketConduit) selectionKey.conduit).close();
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190 failedReceiveCount++;
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191 continue;
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192 }
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193 }
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194 }
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195
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196 if (selectionKey.isWritable())
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197 {
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198 debug (selector)
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199 log.trace(sprint("[{0}] Sending PONG to client", i));
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200
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201 count = (cast(SocketConduit) selectionKey.conduit).write("PONG");
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202 if (count != IConduit.Eof)
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203 {
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204 debug (selector)
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205 log.trace(sprint("[{0}] Sent PONG to client ({1} bytes)", i, count));
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206
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207 selector.reregister(selectionKey.conduit, Event.Read);
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208 sendCount++;
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209 }
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210 else
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211 {
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212 debug (selector)
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213 log.trace(sprint("[{0}] Handle {1} was closed; removing it from Selector",
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214 i, selectionKey.conduit.fileHandle()));
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215 selector.unregister(selectionKey.conduit);
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216 (cast(SocketConduit) selectionKey.conduit).close();
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217 failedSendCount++;
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218 continue;
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219 }
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220 }
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221
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222 if (selectionKey.isError() || selectionKey.isHangup() || selectionKey.isInvalidHandle())
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223 {
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224 char[] status;
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225
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226 if (selectionKey.isHangup())
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227 {
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228 closeCount++;
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229 status = "Hangup";
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230 }
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231 else
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232 {
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233 errorCount++;
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234 if (selectionKey.isInvalidHandle())
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235 status = "Invalid request";
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236 else
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237 status = "Error";
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238 }
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239
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240 debug (selector)
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241 {
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242 log.trace(sprint("[{0}] {1} in handle {2} from Selector",
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243 i, status, cast(int) selectionKey.conduit.fileHandle()));
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244
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245 log.trace(sprint("[{0}] Unregistering handle {1} from Selector",
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246 i, cast(int) selectionKey.conduit.fileHandle()));
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247 }
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248 selector.unregister(selectionKey.conduit);
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249 (cast(Conduit) selectionKey.conduit).close();
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250
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251 if (selectionKey.conduit !is serverSocket)
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252 {
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253 continue;
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254 }
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255 else
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256 {
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257 break;
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258 }
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259 }
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260 }
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261 }
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262 else
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263 {
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264 debug (selector)
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265 log.trace(sprint("[{0}] No more pending events in Selector; aborting", i));
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266 break;
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267 }
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268 i++;
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269
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270 // Thread.sleep(1.0);
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271 /*
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272 if (i % 100 == 0)
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273 {
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274 fullCollect();
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275 getStats(gc)
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276 }
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277 */
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278 }
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279
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280 serverSocket.socket().detach;
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281 }
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282 catch (SelectorException e)
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283 {
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284 log.error(sprint("Selector exception caught:\n{0}", e.toString()));
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285 }
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286 catch (Exception e)
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287 {
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288 log.error(sprint("Exception caught:\n{0}", e.toString()));
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289 }
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290
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291 log.info(sprint("Success: connect={0}; recv={1}; send={2}; close={3}",
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292 connectCount, receiveCount, sendCount, closeCount));
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293 log.info(sprint("Failure: connect={0}, recv={1}; send={2}; error={3}",
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294 failedConnectCount, failedReceiveCount, failedSendCount, errorCount));
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295
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296 log.info(sprint("Total time: {0} ms", cast(uint) (Clock.now - start).millis));
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297
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298 clientThread.join();
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299
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300 selector.close;
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301 }
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302
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303
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304 /**
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305 * Thread that creates a client socket and sends messages to the server socket.
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306 */
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307 void clientThreadFunc()
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308 {
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309 Logger log = Log.getLogger("selector.client");
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310 Sprint!(char) sprint = new Sprint!(char)(256);
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311 SocketConduit socket = new SocketConduit();
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312
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313 Thread.sleep(0.010); // 10 milliseconds
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314
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315 try
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316 {
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317 InternetAddress addr = new InternetAddress(SERVER_ADDR, SERVER_PORT);
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318 char[MAX_LENGTH] buffer;
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319 uint count;
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320 int i;
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321
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322 debug (selector)
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323 log.trace(sprint("[{0}] Connecting to server", i));
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324
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325 socket.connect(addr);
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326
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327 for (i = 1; i <= LOOP_COUNT; i++)
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328 {
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329 debug (selector)
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330 log.trace(sprint("[{0}] Sending PING to server", i));
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331
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332 while (true)
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333 {
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334 try
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335 {
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336 count = socket.write("PING");
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337 break;
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338 }
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339 catch (SocketException e)
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340 {
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341 if (errno != EINTR)
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342 throw e;
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343 }
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344 }
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345 if (count != IConduit.Eof)
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346 {
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347 debug (selector)
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348 {
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349 log.trace(sprint("[{0}] Sent PING to server ({1} bytes)", i, count));
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350
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351 log.trace(sprint("[{0}] Receiving message from server", i));
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352 }
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353 while (true)
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354 {
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355 try
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356 {
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357 count = socket.read(buffer);
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358 break;
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359 }
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360 catch (SocketException e)
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361 {
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362 if (errno != EINTR)
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363 throw e;
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364 }
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365 }
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366 if (count != IConduit.Eof)
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367 {
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368 debug (selector)
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369 log.trace(sprint("[{0}] Received {1} from server ({2} bytes)",
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370 i, buffer[0..count], count));
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371 }
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372 else
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373 {
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374 debug (selector)
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375 log.trace(sprint("[{0}] Handle was closed; aborting",
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376 i, socket.fileHandle()));
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377 break;
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378 }
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379 }
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380 else
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381 {
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382 debug (selector)
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383 log.trace(sprint("[{0}] Handle {1} was closed; aborting",
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384 i, socket.fileHandle()));
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385 break;
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386 }
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387 }
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388 socket.shutdown();
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389 socket.close();
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390 }
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391 catch (Exception e)
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392 {
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393 log.error(sprint("Exception caught:\n{0}", e.toString()));
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394 }
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395 debug (selector)
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396 log.trace("Leaving thread");
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397
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398 return 0;
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399 }
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