[35] | 1 | // Implementation of the Socket class. |
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| 2 | |
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| 3 | |
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| 4 | #include "Socket.h" |
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| 5 | #include "string.h" |
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| 6 | #include <string.h> |
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| 7 | #include <errno.h> |
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| 8 | #include <fcntl.h> |
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| 9 | #include <iostream> |
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| 10 | |
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| 11 | using namespace std; |
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| 12 | |
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| 13 | Socket::Socket() : |
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| 14 | m_sock ( -1 ) |
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| 15 | { |
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| 16 | |
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| 17 | memset ( &m_addr, |
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| 18 | 0, |
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| 19 | sizeof ( m_addr ) ); |
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| 20 | |
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| 21 | } |
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| 22 | |
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| 23 | Socket::~Socket() |
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| 24 | { |
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| 25 | if ( is_valid() ) |
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| 26 | ::close ( m_sock ); |
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| 27 | } |
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| 28 | |
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| 29 | bool Socket::create() |
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| 30 | { |
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| 31 | m_sock = socket ( AF_INET, |
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| 32 | SOCK_STREAM, |
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| 33 | 0 ); |
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| 34 | |
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| 35 | if ( ! is_valid() ) |
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| 36 | return false; |
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| 37 | |
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| 38 | |
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| 39 | // TIME_WAIT - argh |
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| 40 | int on = 1; |
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| 41 | if ( setsockopt ( m_sock, SOL_SOCKET, SO_REUSEADDR, ( const char* ) &on, sizeof ( on ) ) == -1 ) |
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| 42 | return false; |
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| 43 | |
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| 44 | |
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| 45 | return true; |
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| 46 | |
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| 47 | } |
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| 48 | |
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| 49 | |
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| 50 | |
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| 51 | bool Socket::bind ( const int port ) |
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| 52 | { |
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| 53 | |
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| 54 | if ( ! is_valid() ) |
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| 55 | { |
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| 56 | return false; |
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| 57 | } |
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| 58 | |
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| 59 | |
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| 60 | |
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| 61 | m_addr.sin_family = AF_INET; |
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| 62 | m_addr.sin_addr.s_addr = INADDR_ANY; |
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| 63 | m_addr.sin_port = htons ( port ); |
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| 64 | |
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| 65 | int bind_return = ::bind ( m_sock, |
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| 66 | ( struct sockaddr * ) &m_addr, |
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| 67 | sizeof ( m_addr ) ); |
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| 68 | |
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| 69 | |
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| 70 | if ( bind_return == -1 ) |
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| 71 | { |
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| 72 | return false; |
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| 73 | } |
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| 74 | |
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| 75 | return true; |
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| 76 | } |
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| 77 | |
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| 78 | |
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| 79 | bool Socket::listen() const |
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| 80 | { |
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| 81 | if ( ! is_valid() ) |
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| 82 | { |
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| 83 | return false; |
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| 84 | } |
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| 85 | |
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| 86 | int listen_return = ::listen ( m_sock, MAXCONNECTIONS ); |
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| 87 | |
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| 88 | |
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| 89 | if ( listen_return == -1 ) |
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| 90 | { |
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| 91 | return false; |
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| 92 | } |
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| 93 | |
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| 94 | return true; |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | bool Socket::accept ( Socket& new_socket ) const |
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| 99 | { |
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| 100 | int addr_length = sizeof ( m_addr ); |
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| 101 | new_socket.m_sock = ::accept ( m_sock, ( sockaddr * ) &m_addr, ( socklen_t * ) &addr_length ); |
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| 102 | |
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| 103 | if ( new_socket.m_sock <= 0 ) |
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| 104 | return false; |
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| 105 | else |
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| 106 | return true; |
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| 107 | } |
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| 108 | |
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| 109 | |
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| 110 | bool Socket::send ( const std::string s ) const |
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| 111 | { |
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| 112 | int status = ::send ( m_sock, s.c_str(), s.size(), MSG_NOSIGNAL ); |
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| 113 | if ( status == -1 ) |
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| 114 | { |
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| 115 | return false; |
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| 116 | } |
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| 117 | else |
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| 118 | { |
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| 119 | return true; |
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| 120 | } |
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| 121 | } |
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| 122 | |
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| 123 | |
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| 124 | int Socket::recv ( std::string& s ) const |
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| 125 | { |
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| 126 | char buf [ MAXRECV + 1 ]; |
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| 127 | |
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| 128 | s = ""; |
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| 129 | |
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| 130 | memset ( buf, 0, MAXRECV + 1 ); |
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| 131 | |
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| 132 | int status = ::recv ( m_sock, buf, MAXRECV, 0 ); |
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| 133 | |
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| 134 | if ( status == -1 ) |
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| 135 | { |
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| 136 | cout << "status == -1 errno == " << errno << " in Socket::recv\n"; |
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| 137 | return 0; |
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| 138 | } |
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| 139 | else if ( status == 0 ) |
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| 140 | { |
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| 141 | return 0; |
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| 142 | } |
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| 143 | else |
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| 144 | { |
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| 145 | s = buf; |
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| 146 | return status; |
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| 147 | } |
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| 148 | } |
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| 149 | |
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| 150 | |
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| 151 | |
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| 152 | bool Socket::connect ( const std::string host, const int port ) |
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| 153 | { |
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| 154 | if ( ! is_valid() ) return false; |
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| 155 | |
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| 156 | m_addr.sin_family = AF_INET; |
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| 157 | m_addr.sin_port = htons ( port ); |
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| 158 | |
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| 159 | int status = inet_pton ( AF_INET, host.c_str(), &m_addr.sin_addr ); |
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| 160 | |
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| 161 | if ( errno == EAFNOSUPPORT ) return false; |
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| 162 | |
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| 163 | status = ::connect ( m_sock, ( sockaddr * ) &m_addr, sizeof ( m_addr ) ); |
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| 164 | |
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| 165 | if ( status == 0 ) |
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| 166 | return true; |
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| 167 | else |
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| 168 | return false; |
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| 169 | } |
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| 170 | |
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| 171 | void Socket::set_non_blocking ( const bool b ) |
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| 172 | { |
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| 173 | |
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| 174 | int opts; |
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| 175 | |
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| 176 | opts = fcntl ( m_sock, |
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| 177 | F_GETFL ); |
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| 178 | |
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| 179 | if ( opts < 0 ) |
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| 180 | { |
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| 181 | return; |
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| 182 | } |
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| 183 | |
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| 184 | if ( b ) |
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| 185 | opts = ( opts | O_NONBLOCK ); |
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| 186 | else |
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| 187 | opts = ( opts & ~O_NONBLOCK ); |
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| 188 | |
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| 189 | fcntl ( m_sock, |
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| 190 | F_SETFL,opts ); |
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| 191 | |
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| 192 | } |
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