1 | #include <iostream>
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2 | #include <string>
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3 | #include <boost/asio.hpp>
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4 | #include <boost/bind.hpp>
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5 | #include <boost/lexical_cast.hpp>
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6 | #include <boost/asio/deadline_timer.hpp>
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7 | #include <boost/enable_shared_from_this.hpp>
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8 |
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9 | using boost::lexical_cast;
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10 |
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11 | #include "Time.h"
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12 | #include "Converter.h"
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13 |
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14 | #include "HeadersFAD.h"
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15 |
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16 | using namespace std;
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17 | using namespace FAD;
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18 |
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19 | namespace ba = boost::asio;
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20 | namespace bs = boost::system;
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21 | namespace dummy = ba::placeholders;
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22 |
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23 | using boost::lexical_cast;
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24 | using ba::ip::tcp;
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25 |
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26 | // ------------------------------------------------------------------------
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27 |
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28 | class tcp_connection : public ba::ip::tcp::socket, public boost::enable_shared_from_this<tcp_connection>
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29 | {
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30 | private:
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31 |
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32 | double fStartTime;
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33 | uint32_t fRunNumber;
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34 |
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35 | void AsyncRead(ba::mutable_buffers_1 buffers)
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36 | {
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37 | ba::async_read(*this, buffers,
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38 | boost::bind(&tcp_connection::HandleReceivedData, shared_from_this(),
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39 | dummy::error, dummy::bytes_transferred));
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40 | }
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41 |
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42 | void AsyncWrite(ba::ip::tcp::socket *socket, const ba::const_buffers_1 &buffers)
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43 | {
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44 | ba::async_write(*socket, buffers,
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45 | boost::bind(&tcp_connection::HandleSentData, shared_from_this(),
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46 | dummy::error, dummy::bytes_transferred));
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47 | }
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48 | void AsyncWait(ba::deadline_timer &timer, int seconds,
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49 | void (tcp_connection::*handler)(const bs::error_code&))// const
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50 | {
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51 | timer.expires_from_now(boost::posix_time::seconds(seconds));
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52 | timer.async_wait(boost::bind(handler, shared_from_this(), dummy::error));
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53 | }
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54 |
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55 | // The constructor is prvate to force the obtained pointer to be shared
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56 | tcp_connection(ba::io_service& ioservice) : ba::ip::tcp::socket(ioservice),
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57 | fTriggerSendData(ioservice)
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58 | {
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59 | }
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60 |
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61 | // Callback when writing was successfull or failed
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62 | void HandleSentData(const boost::system::error_code& error, size_t bytes_transferred)
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63 | {
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64 | cout << "Data sent: (transmitted=" << bytes_transferred << ") rc=" << error.message() << " (" << error << ")" << endl;
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65 | }
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66 |
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67 | vector<uint16_t> fBufCommand;
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68 | vector<uint16_t> fBuffer;
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69 |
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70 | vector<uint16_t> fCommand;
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71 |
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72 | FAD::EventHeader fHeader;
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73 | FAD::ChannelHeader fChHeader[kNumChannels];
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74 |
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75 | ba::deadline_timer fTriggerSendData;
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76 |
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77 | bool fTriggerEnabled;
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78 | bool fCommandSocket;
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79 |
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80 | int fSocket;
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81 |
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82 | void SendData()
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83 | {
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84 | if (!fTriggerEnabled)
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85 | return;
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86 |
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87 | fHeader.fPackageLength = sizeof(EventHeader)/2+1;
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88 | fHeader.fEventCounter++;
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89 | fHeader.fTimeStamp = uint32_t((Time(Time::utc).UnixTime()-fStartTime)*10000);
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90 |
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91 |
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92 | fBuffer.resize(0);
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93 |
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94 | for (int i=0; i<kNumChannels; i++)
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95 | {
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96 | fChHeader[i].fStartCell = i*10;
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97 |
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98 | const vector<uint16_t> buf = fChHeader[i].HtoN();
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99 |
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100 | fBuffer.insert(fBuffer.end(), buf.begin(), buf.end());
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101 | fBuffer.insert(fBuffer.end(), fChHeader[i].fRegionOfInterest, 0x42);
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102 |
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103 | fHeader.fPackageLength += sizeof(ChannelHeader)/2;
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104 | fHeader.fPackageLength += fChHeader[i].fRegionOfInterest;
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105 | }
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106 |
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107 | fBuffer.push_back(htons(FAD::kDelimiterEnd));
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108 |
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109 | const vector<uint16_t> h = fHeader.HtoN();
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110 |
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111 | fBuffer.insert(fBuffer.begin(), h.begin(), h.end());
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112 |
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113 | if (fCommandSocket)
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114 | AsyncWrite(this, ba::buffer(ba::const_buffer(fBuffer.data(), fBuffer.size()*2)));
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115 | else
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116 | {
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117 | if (fSockets.size()==0)
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118 | return;
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119 |
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120 | fSocket++;
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121 | fSocket %= fSockets.size();
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122 |
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123 | AsyncWrite(fSockets[fSocket].get(), ba::buffer(ba::const_buffer(fBuffer.data(), fBuffer.size()*2)));
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124 | }
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125 | }
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126 |
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127 | void TriggerSendData(const boost::system::error_code &ec)
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128 | {
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129 | if (!is_open())
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130 | {
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131 | // For example: Here we could schedule a new accept if we
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132 | // would not want to allow two connections at the same time.
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133 | return;
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134 | }
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135 |
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136 | if (ec==ba::error::basic_errors::operation_aborted)
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137 | return;
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138 |
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139 | // Check whether the deadline has passed. We compare the deadline
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140 | // against the current time since a new asynchronous operation
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141 | // may have moved the deadline before this actor had a chance
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142 | // to run.
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143 | if (fTriggerSendData.expires_at() > ba::deadline_timer::traits_type::now())
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144 | return;
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145 |
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146 | // The deadline has passed.
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147 | SendData();
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148 |
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149 | AsyncWait(fTriggerSendData, 1, &tcp_connection::TriggerSendData);
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150 | }
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151 |
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152 | void HandleReceivedData(const boost::system::error_code& error, size_t bytes_received)
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153 | {
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154 | // Do not schedule a new read if the connection failed.
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155 | if (bytes_received==0)
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156 | {
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157 | // Close the connection
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158 | close();
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159 | return;
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160 | }
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161 |
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162 | // No command received yet
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163 | if (fCommand.size()==0)
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164 | {
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165 | transform(fBufCommand.begin(), fBufCommand.begin()+bytes_received/2,
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166 | fBufCommand.begin(), ntohs);
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167 |
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168 | switch (fBufCommand[0])
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169 | {
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170 | case kCmdDrsEnable:
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171 | case kCmdDrsEnable+0x100:
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172 | fHeader.Enable(FAD::EventHeader::kDenable, fBufCommand[0]==kCmdDrsEnable);
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173 | cout << "-> DrsEnable" << endl;
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174 | break;
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175 |
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176 | case kCmdDwrite:
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177 | case kCmdDwrite+0x100:
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178 | fHeader.Enable(FAD::EventHeader::kDwrite, fBufCommand[0]==kCmdDwrite);
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179 | cout << "-> Dwrite" << endl;
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180 | break;
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181 |
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182 | case kCmdTriggerLine:
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183 | case kCmdTriggerLine+0x100:
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184 | cout << "-> Trigger line" << endl;
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185 | fTriggerEnabled = fBufCommand[0]==kCmdTriggerLine;
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186 | break;
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187 |
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188 | case kCmdSclk:
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189 | case kCmdSclk+0x100:
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190 | cout << "-> Sclk" << endl;
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191 | fHeader.Enable(FAD::EventHeader::kSpiSclk, fBufCommand[0]==kCmdSclk);
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192 | break;
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193 |
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194 | case kCmdSrclk:
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195 | case kCmdSrclk+0x100:
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196 | cout << "-> Drclk" << endl;
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197 | break;
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198 |
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199 | case kCmdRun:
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200 | case kCmdRun+0x100:
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201 | cout << "-> Run" << endl;
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202 | break;
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203 |
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204 | case kCmdSocket:
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205 | case kCmdSocket+0x100:
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206 | cout << "-> Socket" << endl;
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207 | fCommandSocket = fBufCommand[0]==kCmdSocket;
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208 | break;
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209 |
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210 | case kCmdContTriggerOn:
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211 | case kCmdContTriggerOff:
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212 | if (fBufCommand[0]==kCmdContTriggerOn)
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213 | AsyncWait(fTriggerSendData, 1, &tcp_connection::TriggerSendData);
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214 | else
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215 | fTriggerSendData.cancel();
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216 | cout << "-> ContTrig" << endl;
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217 | break;
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218 |
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219 | case kCmdResetTriggerId:
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220 | cout << "-> Reset" << endl;
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221 | fHeader.fEventCounter = 0;
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222 | break;
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223 |
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224 | case kCmdSingleTrigger:
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225 | cout << "-> Trigger" << endl;
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226 | SendData();
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227 | break;
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228 |
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229 | default:
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230 | if (fBufCommand[0]>=kCmdWriteRoi && fBufCommand[0]<kCmdWriteRoi+kNumChannels)
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231 | {
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232 | fCommand.resize(2);
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233 | fCommand[0] = kCmdWriteRoi;
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234 | fCommand[1] = fBufCommand[0]-kCmdWriteRoi;
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235 | break;
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236 | }
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237 | if (fBufCommand[0]>= kCmdWriteDac && fBufCommand[0]<kCmdWriteDac+kNumDac)
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238 | {
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239 | fCommand.resize(2);
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240 | fCommand[0] = kCmdWriteDac;
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241 | fCommand[1] = fBufCommand[0]-kCmdWriteDac;
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242 | break;
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243 | }
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244 |
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245 | cout << "Received b=" << bytes_received << ": " << error.message() << " (" << error << ")" << endl;
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246 | cout << "Hex:" << Converter::GetHex<uint16_t>(&fBufCommand[0], bytes_received) << endl;
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247 | return;
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248 | }
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249 |
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250 | fBufCommand.resize(1);
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251 | AsyncRead(ba::buffer(fBufCommand));
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252 | return;
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253 | }
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254 |
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255 | transform(fBufCommand.begin(), fBufCommand.begin()+bytes_received/2,
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256 | fBufCommand.begin(), ntohs);
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257 |
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258 | switch (fCommand[0])
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259 | {
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260 | case kCmdWriteRoi:
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261 | cout << "-> Set Roi[" << fCommand[1] << "]=" << fBufCommand[0] << endl;
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262 | fChHeader[fCommand[1]].fRegionOfInterest = fBufCommand[0];
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263 | break;
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264 |
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265 | case kCmdWriteDac:
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266 | cout << "-> Set Dac[" << fCommand[1] << "]=" << fBufCommand[0] << endl;
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267 | fHeader.fDac[fCommand[1]] = fBufCommand[0];
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268 | break;
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269 | }
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270 |
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271 | fCommand.resize(0);
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272 |
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273 | fBufCommand.resize(1);
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274 | AsyncRead(ba::buffer(fBufCommand));
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275 | }
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276 |
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277 | public:
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278 | typedef boost::shared_ptr<tcp_connection> shared_ptr;
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279 |
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280 | static shared_ptr create(ba::io_service& io_service)
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281 | {
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282 | return shared_ptr(new tcp_connection(io_service));
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283 | }
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284 |
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285 | void start()
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286 | {
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287 | // Ownership of buffer must be valid until Handler is called.
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288 |
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289 | fTriggerEnabled=false;
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290 | fCommandSocket=true;
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291 |
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292 | fHeader.fStartDelimiter = FAD::kDelimiterStart;
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293 | fHeader.fVersion = 0x104;
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294 | fHeader.fStatus = 0xf<<12 |
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295 | FAD::EventHeader::kDenable |
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296 | FAD::EventHeader::kDwrite |
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297 | FAD::EventHeader::kDcmLocked |
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298 | FAD::EventHeader::kDcmReady |
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299 | FAD::EventHeader::kSpiSclk;
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300 |
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301 | fStartTime = Time(Time::utc).UnixTime();
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302 |
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303 | for (int i=0; i<kNumChannels; i++)
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304 | {
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305 | fChHeader[i].fId = (i%9) | ((i/9)<<4);
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306 | fChHeader[i].fRegionOfInterest = 0;
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307 | }
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308 |
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309 | // Emit something to be written to the socket
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310 | fBufCommand.resize(1);
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311 | AsyncRead(ba::buffer(fBufCommand));
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312 |
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313 | // AsyncWait(fTriggerDynData, 1, &tcp_connection::SendDynData);
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314 |
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315 | // AsyncWrite(ba::buffer(ba::const_buffer(&fHeader, sizeof(FTM::Header))));
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316 | // AsyncWait(deadline_, 3, &tcp_connection::check_deadline);
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317 |
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318 | }
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319 |
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320 | vector<boost::shared_ptr<ba::ip::tcp::socket>> fSockets;
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321 |
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322 | ~tcp_connection()
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323 | {
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324 | fSockets.clear();
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325 | }
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326 |
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327 | void handle_accept(boost::shared_ptr<ba::ip::tcp::socket> socket, int port, const boost::system::error_code&/* error*/)
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328 | {
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329 | cout << "Added one socket " << socket->remote_endpoint().address().to_v4().to_string();
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330 | cout << ":"<< port << endl;
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331 | fSockets.push_back(socket);
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332 | }
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333 | };
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334 |
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335 |
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336 | class tcp_server
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337 | {
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338 | tcp::acceptor acc0;
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339 | tcp::acceptor acc1;
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340 | tcp::acceptor acc2;
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341 | tcp::acceptor acc3;
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342 | tcp::acceptor acc4;
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343 | tcp::acceptor acc5;
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344 | tcp::acceptor acc6;
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345 | tcp::acceptor acc7;
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346 |
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347 | int fPort;
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348 |
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349 | public:
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350 | tcp_server(ba::io_service& ioservice, int port) :
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351 | acc0(ioservice, tcp::endpoint(tcp::v4(), port)),
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352 | acc1(ioservice, tcp::endpoint(tcp::v4(), port+1)),
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353 | acc2(ioservice, tcp::endpoint(tcp::v4(), port+2)),
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354 | acc3(ioservice, tcp::endpoint(tcp::v4(), port+3)),
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355 | acc4(ioservice, tcp::endpoint(tcp::v4(), port+4)),
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356 | acc5(ioservice, tcp::endpoint(tcp::v4(), port+5)),
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357 | acc6(ioservice, tcp::endpoint(tcp::v4(), port+6)),
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358 | acc7(ioservice, tcp::endpoint(tcp::v4(), port+7)),
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359 | fPort(port)
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360 | {
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361 | // We could start listening for more than one connection
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362 | // here, but since there is only one handler executed each time
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363 | // it would not make sense. Before one handle_accept is not
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364 | // finished no new handle_accept will be called.
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365 | // Workround: Start a new thread in handle_accept
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366 | start_accept();
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367 | }
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368 |
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369 | private:
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370 | void start_accept(tcp_connection::shared_ptr dest, tcp::acceptor &acc)
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371 | {
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372 | boost::shared_ptr<ba::ip::tcp::socket> connection =
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373 | boost::shared_ptr<ba::ip::tcp::socket>(new ba::ip::tcp::socket(acc.io_service()));
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374 | acc.async_accept(*connection,
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375 | boost::bind(&tcp_connection::handle_accept,
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376 | dest, connection,
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377 | acc.local_endpoint().port(),
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378 | ba::placeholders::error));
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379 | }
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380 |
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381 | void start_accept()
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382 | {
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383 | cout << "Start accept..." << flush;
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384 | tcp_connection::shared_ptr new_connection = tcp_connection::create(/*acceptor_.*/acc0.io_service());
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385 |
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386 | // This will accept a connection without blocking
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387 | acc0.async_accept(*new_connection,
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388 | boost::bind(&tcp_server::handle_accept,
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389 | this,
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390 | new_connection,
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391 | ba::placeholders::error));
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392 |
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393 | start_accept(new_connection, acc1);
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394 | start_accept(new_connection, acc2);
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395 | start_accept(new_connection, acc3);
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396 | start_accept(new_connection, acc4);
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397 | start_accept(new_connection, acc5);
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398 | start_accept(new_connection, acc6);
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399 | start_accept(new_connection, acc7);
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400 |
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401 | cout << "start-done." << endl;
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402 | }
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403 |
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404 | void handle_accept(tcp_connection::shared_ptr new_connection, const boost::system::error_code& error)
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405 | {
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406 | // The connection has been accepted and is now ready to use
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407 |
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408 | // not installing a new handler will stop run()
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409 | cout << "Handle accept..." << flush;
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410 | if (!error)
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411 | {
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412 | new_connection->start();
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413 |
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414 | // The is now an open connection/server (tcp_connection)
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415 | // we immediatly schedule another connection
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416 | // This allowed two client-connection at the same time
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417 | start_accept();
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418 | }
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419 | cout << "handle-done." << endl;
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420 | }
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421 | };
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422 |
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423 | int main(int argc, const char **argv)
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424 | {
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425 | try
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426 | {
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427 | ba::io_service io_service;
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428 |
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429 | int port = argc==2 ? lexical_cast<int>(argv[1]) : 5000;
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430 |
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431 | tcp_server server(io_service, port);
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432 |
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433 | // ba::add_service(io_service, &server);
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434 | // server.add_service(...);
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435 | //cout << "Run..." << flush;
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436 |
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437 | // Calling run() from a single thread ensures no concurrent access
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438 | // of the handler which are called!!!
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439 | io_service.run();
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440 |
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441 | //cout << "end." << endl;
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442 | }
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443 | catch (std::exception& e)
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444 | {
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445 | std::cerr << e.what() << std::endl;
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446 | }
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447 |
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448 | return 0;
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449 | }
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450 | /* ====================== Buffers ===========================
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451 |
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452 | char d1[128]; ba::buffer(d1));
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453 | std::vector<char> d2(128); ba::buffer(d2);
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454 | boost::array<char, 128> d3; by::buffer(d3);
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455 |
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456 | // --------------------------------
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457 | char d1[128];
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458 | std::vector<char> d2(128);
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459 | boost::array<char, 128> d3;
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460 |
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461 | boost::array<mutable_buffer, 3> bufs1 = {
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462 | ba::buffer(d1),
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463 | ba::buffer(d2),
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464 | ba::buffer(d3) };
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465 | sock.read(bufs1);
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466 |
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467 | std::vector<const_buffer> bufs2;
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468 | bufs2.push_back(boost::asio::buffer(d1));
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469 | bufs2.push_back(boost::asio::buffer(d2));
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470 | bufs2.push_back(boost::asio::buffer(d3));
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471 | sock.write(bufs2);
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472 |
|
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473 |
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474 | // ======================= Read functions =========================
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475 |
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476 | ba::async_read_until --> delimiter
|
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477 |
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478 | streambuf buf; // Ensure validity until handler!
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479 | by::async_read(s, buf, ....);
|
---|
480 |
|
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481 | ba::async_read(s, ba:buffer(data, size), handler);
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482 | // Single buffer
|
---|
483 | boost::asio::async_read(s,
|
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484 | ba::buffer(data, size),
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485 | compl-func --> ba::transfer_at_least(32),
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486 | handler);
|
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487 |
|
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488 | // Multiple buffers
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489 | boost::asio::async_read(s, buffers,
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---|
490 | compl-func --> boost::asio::transfer_all(),
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491 | handler);
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492 | */
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493 |
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---|
494 | // ================= Others ===============================
|
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495 |
|
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496 | /*
|
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497 | strand Provides serialised handler execution.
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---|
498 | work Class to inform the io_service when it has work to do.
|
---|
499 |
|
---|
500 |
|
---|
501 | io_service::
|
---|
502 | dispatch Request the io_service to invoke the given handler.
|
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503 | poll Run the io_service's event processing loop to execute ready
|
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504 | handlers.
|
---|
505 | poll_one Run the io_service's event processing loop to execute one ready
|
---|
506 | handler.
|
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507 | post Request the io_service to invoke the given handler and return
|
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508 | immediately.
|
---|
509 | reset Reset the io_service in preparation for a subsequent run()
|
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510 | invocation.
|
---|
511 | run Run the io_service's event processing loop.
|
---|
512 | run_one Run the io_service's event processing loop to execute at most
|
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513 | one handler.
|
---|
514 | stop Stop the io_service's event processing loop.
|
---|
515 | wrap Create a new handler that automatically dispatches the wrapped
|
---|
516 | handler on the io_service.
|
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517 |
|
---|
518 | strand:: The io_service::strand class provides the ability to
|
---|
519 | post and dispatch handlers with the guarantee that none
|
---|
520 | of those handlers will execute concurrently.
|
---|
521 |
|
---|
522 | dispatch Request the strand to invoke the given handler.
|
---|
523 | get_io_service Get the io_service associated with the strand.
|
---|
524 | post Request the strand to invoke the given handler and return
|
---|
525 | immediately.
|
---|
526 | wrap Create a new handler that automatically dispatches the
|
---|
527 | wrapped handler on the strand.
|
---|
528 |
|
---|
529 | work:: The work class is used to inform the io_service when
|
---|
530 | work starts and finishes. This ensures that the io_service's run() function will not exit while work is underway, and that it does exit when there is no unfinished work remaining.
|
---|
531 | get_io_service Get the io_service associated with the work.
|
---|
532 | work Constructor notifies the io_service that work is starting.
|
---|
533 |
|
---|
534 | */
|
---|
535 |
|
---|
536 |
|
---|