| OLD | NEW |
|---|
| (Empty) |
| 1 /***************************************************************************** | |
| 2 Copyright (c) 2001 - 2011, The Board of Trustees of the University of Illinois. | |
| 3 All rights reserved. | |
| 4 | |
| 5 Redistribution and use in source and binary forms, with or without | |
| 6 modification, are permitted provided that the following conditions are | |
| 7 met: | |
| 8 | |
| 9 * Redistributions of source code must retain the above | |
| 10 copyright notice, this list of conditions and the | |
| 11 following disclaimer. | |
| 12 | |
| 13 * Redistributions in binary form must reproduce the | |
| 14 above copyright notice, this list of conditions | |
| 15 and the following disclaimer in the documentation | |
| 16 and/or other materials provided with the distribution. | |
| 17 | |
| 18 * Neither the name of the University of Illinois | |
| 19 nor the names of its contributors may be used to | |
| 20 endorse or promote products derived from this | |
| 21 software without specific prior written permission. | |
| 22 | |
| 23 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
| 24 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 25 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 26 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 27 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 28 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 29 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 30 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 31 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 32 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 34 *****************************************************************************/ | |
| 35 | |
| 36 /***************************************************************************** | |
| 37 written by | |
| 38 Yunhong Gu, last updated 01/27/2011 | |
| 39 *****************************************************************************/ | |
| 40 | |
| 41 #ifndef __UDT_CHANNEL_H__ | |
| 42 #define __UDT_CHANNEL_H__ | |
| 43 | |
| 44 | |
| 45 #include "udt.h" | |
| 46 #include "packet.h" | |
| 47 | |
| 48 | |
| 49 class CChannel | |
| 50 { | |
| 51 public: | |
| 52 CChannel(); | |
| 53 CChannel(const int& version); | |
| 54 ~CChannel(); | |
| 55 | |
| 56 // Functionality: | |
| 57 // Opne a UDP channel. | |
| 58 // Parameters: | |
| 59 // 0) [in] addr: The local address that UDP will use. | |
| 60 // Returned value: | |
| 61 // None. | |
| 62 | |
| 63 void open(const sockaddr* addr = NULL); | |
| 64 | |
| 65 // Functionality: | |
| 66 // Opne a UDP channel based on an existing UDP socket. | |
| 67 // Parameters: | |
| 68 // 0) [in] udpsock: UDP socket descriptor. | |
| 69 // Returned value: | |
| 70 // None. | |
| 71 | |
| 72 void open(UDPSOCKET udpsock); | |
| 73 | |
| 74 // Functionality: | |
| 75 // Disconnect and close the UDP entity. | |
| 76 // Parameters: | |
| 77 // None. | |
| 78 // Returned value: | |
| 79 // None. | |
| 80 | |
| 81 void close() const; | |
| 82 | |
| 83 // Functionality: | |
| 84 // Get the UDP sending buffer size. | |
| 85 // Parameters: | |
| 86 // None. | |
| 87 // Returned value: | |
| 88 // Current UDP sending buffer size. | |
| 89 | |
| 90 int getSndBufSize(); | |
| 91 | |
| 92 // Functionality: | |
| 93 // Get the UDP receiving buffer size. | |
| 94 // Parameters: | |
| 95 // None. | |
| 96 // Returned value: | |
| 97 // Current UDP receiving buffer size. | |
| 98 | |
| 99 int getRcvBufSize(); | |
| 100 | |
| 101 // Functionality: | |
| 102 // Set the UDP sending buffer size. | |
| 103 // Parameters: | |
| 104 // 0) [in] size: expected UDP sending buffer size. | |
| 105 // Returned value: | |
| 106 // None. | |
| 107 | |
| 108 void setSndBufSize(const int& size); | |
| 109 | |
| 110 // Functionality: | |
| 111 // Set the UDP receiving buffer size. | |
| 112 // Parameters: | |
| 113 // 0) [in] size: expected UDP receiving buffer size. | |
| 114 // Returned value: | |
| 115 // None. | |
| 116 | |
| 117 void setRcvBufSize(const int& size); | |
| 118 | |
| 119 // Functionality: | |
| 120 // Query the socket address that the channel is using. | |
| 121 // Parameters: | |
| 122 // 0) [out] addr: pointer to store the returned socket address. | |
| 123 // Returned value: | |
| 124 // None. | |
| 125 | |
| 126 void getSockAddr(sockaddr* addr) const; | |
| 127 | |
| 128 // Functionality: | |
| 129 // Query the peer side socket address that the channel is connect to. | |
| 130 // Parameters: | |
| 131 // 0) [out] addr: pointer to store the returned socket address. | |
| 132 // Returned value: | |
| 133 // None. | |
| 134 | |
| 135 void getPeerAddr(sockaddr* addr) const; | |
| 136 | |
| 137 // Functionality: | |
| 138 // Send a packet to the given address. | |
| 139 // Parameters: | |
| 140 // 0) [in] addr: pointer to the destination address. | |
| 141 // 1) [in] packet: reference to a CPacket entity. | |
| 142 // Returned value: | |
| 143 // Actual size of data sent. | |
| 144 | |
| 145 int sendto(const sockaddr* addr, CPacket& packet) const; | |
| 146 | |
| 147 // Functionality: | |
| 148 // Receive a packet from the channel and record the source address. | |
| 149 // Parameters: | |
| 150 // 0) [in] addr: pointer to the source address. | |
| 151 // 1) [in] packet: reference to a CPacket entity. | |
| 152 // Returned value: | |
| 153 // Actual size of data received. | |
| 154 | |
| 155 int recvfrom(sockaddr* addr, CPacket& packet) const; | |
| 156 | |
| 157 private: | |
| 158 void setUDPSockOpt(); | |
| 159 | |
| 160 private: | |
| 161 int m_iIPversion; // IP version | |
| 162 int m_iSockAddrSize; // socket address structure size (pre-de
fined to avoid run-time test) | |
| 163 | |
| 164 UDPSOCKET m_iSocket; // socket descriptor | |
| 165 | |
| 166 int m_iSndBufSize; // UDP sending buffer size | |
| 167 int m_iRcvBufSize; // UDP receiving buffer size | |
| 168 }; | |
| 169 | |
| 170 | |
| 171 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
