[8] | 1 | // Copyright (c) 2013 by István Váradi
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| 2 |
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| 3 | // This file is part of VSCPL, a simple cross-platform utility library
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| 4 |
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| 5 | // Redistribution and use in source and binary forms, with or without
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| 6 | // modification, are permitted provided that the following conditions are met:
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| 7 |
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| 8 | // 1. Redistributions of source code must retain the above copyright notice, this
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| 9 | // list of conditions and the following disclaimer.
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| 10 | // 2. Redistributions in binary form must reproduce the above copyright notice,
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| 11 | // this list of conditions and the following disclaimer in the documentation
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| 12 | // and/or other materials provided with the distribution.
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| 13 |
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| 14 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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| 15 | // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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| 16 | // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 17 | // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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| 18 | // ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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| 19 | // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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| 20 | // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 21 | // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 22 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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| 23 | // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 24 |
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| 25 | // The views and conclusions contained in the software and documentation are those
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| 26 | // of the authors and should not be interpreted as representing official policies,
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| 27 | // either expressed or implied, of the FreeBSD Project.
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| 28 |
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| 29 | #ifndef HU_VARADIISTVAN_SCPL_IO_POSIX_ACCEPTOR_H
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| 30 | #define HU_VARADIISTVAN_SCPL_IO_POSIX_ACCEPTOR_H
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| 31 | //------------------------------------------------------------------------------
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| 32 |
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| 33 | #include "../Failable.h"
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| 34 |
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| 35 | #include "ServerSocket.h"
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| 36 |
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| 37 | #include <cstdlib>
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| 38 |
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| 39 | //------------------------------------------------------------------------------
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| 40 |
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| 41 | namespace hu { namespace varadiistvan { namespace scpl { namespace io {
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| 42 |
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| 43 | //------------------------------------------------------------------------------
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| 44 |
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| 45 | /**
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| 46 | * Class representing the accepting of an incoming connection on a
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| 47 | * socket.
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| 48 | */
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| 49 | class Acceptor : public FailableReference<Acceptor>
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| 50 | {
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| 51 | protected:
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| 52 | /**
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| 53 | * The socket we belong to.
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| 54 | */
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| 55 | ServerSocket& socket;
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| 56 |
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| 57 | /**
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| 58 | * The file descriptor accepted the last time.
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| 59 | */
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| 60 | int acceptedFD;
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| 61 |
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| 62 | /**
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| 63 | * The buffer for the remote address, if we are interested.
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| 64 | */
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| 65 | unsigned char* address;
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| 66 |
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| 67 | /**
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| 68 | * The length of the remote address buffer.
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| 69 | */
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| 70 | size_t addressLength;
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| 71 |
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| 72 | protected:
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| 73 | /**
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| 74 | * Construct the acceptor.
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| 75 | *
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| 76 | * @param addressLength the length of the buffer for the peer
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| 77 | * address. If 0, not buffer will be created.
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| 78 | */
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| 79 | Acceptor(ServerSocket* socket, size_t addressLength = 0);
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| 80 |
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| 81 | public:
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| 82 | /**
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| 83 | * Destroy the acceptor.
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| 84 | */
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| 85 | virtual ~Acceptor();
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| 86 |
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| 87 | /**
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| 88 | * Start accepting a connection.
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| 89 | *
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| 90 | * If a connection is already accepted, but not retrieved yet, it
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| 91 | * returns true.
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| 92 | *
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| 93 | * If a new socket becomes immediately available, it returns true.
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| 94 | *
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| 95 | * If some error occurs, the acceptor is marked as failed.
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| 96 | */
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| 97 | bool accept();
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| 98 |
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| 99 | protected:
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| 100 | /**
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| 101 | * Called when a connection gets processed and we can become ready
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| 102 | * for the next one.
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| 103 | */
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| 104 | void connectionProcessed();
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| 105 |
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| 106 | private:
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| 107 | /**
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| 108 | * Get the failable object.
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| 109 | */
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| 110 | const Failable& getFailable() const;
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| 111 |
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| 112 | /**
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| 113 | * Get the failable object.
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| 114 | */
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| 115 | Failable& getFailable();
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| 116 |
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| 117 | friend class FailableReference<Acceptor>;
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| 118 | };
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| 119 |
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| 120 | //------------------------------------------------------------------------------
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| 121 | // Inline definitions
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| 122 | //------------------------------------------------------------------------------
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| 123 |
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| 124 | inline Acceptor::Acceptor(ServerSocket* socket, size_t addressLength) :
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| 125 | socket(*socket),
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| 126 | acceptedFD(-1),
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| 127 | address( (addressLength==0) ? 0 : new unsigned char[addressLength]),
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| 128 | addressLength(addressLength)
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| 129 | {
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| 130 | }
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| 131 |
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| 132 | //------------------------------------------------------------------------------
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| 133 |
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| 134 | inline void Acceptor::connectionProcessed()
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| 135 | {
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| 136 | acceptedFD = -1;
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| 137 | }
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| 138 |
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| 139 | //------------------------------------------------------------------------------
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| 140 |
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| 141 | inline const Failable& Acceptor::getFailable() const
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| 142 | {
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| 143 | return socket;
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| 144 | }
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| 145 |
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| 146 | //------------------------------------------------------------------------------
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| 147 |
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| 148 | inline Failable& Acceptor::getFailable()
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| 149 | {
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| 150 | return socket;
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| 151 | }
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| 152 |
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| 153 | //------------------------------------------------------------------------------
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| 154 |
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| 155 | } /* namespace hu::varadiistvan::scpl::io */ } /* namespace hu::varadiistvan::scpl */ } /* namespace hu::varadiistvan */ } /* namespace hu */
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| 156 |
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| 157 | //------------------------------------------------------------------------------
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| 158 | #endif // HU_VARADIISTVAN_SCPL_IO_POSIX_ACCEPTOR_H
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| 159 |
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| 160 | // Local Variables:
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| 161 | // mode: C++
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| 162 | // c-basic-offset: 4
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| 163 | // indent-tabs-mode: nil
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| 164 | // End:
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