Unix interface for using sockets. More...
#include <socket_traits_unix.hpp>
Public Types | |
typedef int | descriptor |
Type of the system description of the socket. | |
Static Public Member Functions | |
static bool | init () |
Initialize the use of the socket library. | |
static bool | release () |
Close the socket library. | |
static descriptor | open () |
Open a socket. | |
static bool | close (descriptor d) |
Close a socket. | |
static bool | connect (descriptor d, const std::string &address, int port) |
Connect a socket to a port. | |
static bool | listen (descriptor d, int port, unsigned int queue_size) |
Open a socket for incoming connexions. | |
static bool | select_read (descriptor d, int time_limit=-1) |
Select a socket for reading. | |
static descriptor | accept (descriptor d) |
Accept an incoming connexion. | |
static bool | valid_descriptor (descriptor d) |
Tell if a descriptor is a valid socket descriptor. | |
static bool | is_open (descriptor d) |
Tell if a descriptor is a opened socket. | |
Static Public Attributes | |
static const descriptor | invalid_socket = -1 |
Invalid socket descriptor. |
Unix interface for using sockets.
Definition at line 49 of file socket_traits_unix.hpp.
typedef int claw::socket_traits_unix::descriptor |
Type of the system description of the socket.
Definition at line 53 of file socket_traits_unix.hpp.
static descriptor claw::socket_traits_unix::accept | ( | descriptor | d | ) | [inline, static] |
Accept an incoming connexion.
d | The descriptor of the socket to listen. |
Definition at line 201 of file socket_traits_unix.hpp.
Referenced by claw::net::socket_server::accept().
00202 { 00203 return ::accept( d, NULL, NULL ); 00204 } // socket_traits_unix::accept()
static bool claw::socket_traits_unix::close | ( | descriptor | d | ) | [inline, static] |
Close a socket.
d | The descriptor of the socket to close. |
Definition at line 100 of file socket_traits_unix.hpp.
Referenced by claw::net::basic_socket::close().
00101 { 00102 return ::close(d) == 0; 00103 } // socket_traits_unix::close()
static bool claw::socket_traits_unix::connect | ( | descriptor | d, | |
const std::string & | address, | |||
int | port | |||
) | [inline, static] |
Connect a socket to a port.
d | The descriptor of the socket to connect. | |
address | The adress to connect to. | |
port | The port to connect to. |
Definition at line 113 of file socket_traits_unix.hpp.
References CLAW_PRECOND, and invalid_socket.
Referenced by claw::net::basic_socketbuf< CharT, Traits >::connect().
00114 { 00115 CLAW_PRECOND( d != invalid_socket ); 00116 00117 bool result = false; 00118 struct hostent* hp = gethostbyname(address.c_str()); 00119 00120 if (hp) 00121 { 00122 struct sockaddr_in sa; 00123 00124 memset (&sa, '\0', sizeof(sa)); 00125 sa.sin_family = hp->h_addrtype; 00126 sa.sin_port = htons(port); 00127 memcpy( &sa.sin_addr, hp->h_addr, hp->h_length ); 00128 00129 if (::connect(d, (struct sockaddr*)&sa, (socklen_t)sizeof(sa)) != -1) 00130 result = true; 00131 } 00132 00133 return result; 00134 } // socket_traits_unix::connect()
static bool claw::socket_traits_unix::init | ( | ) | [inline, static] |
Initialize the use of the socket library.
Definition at line 65 of file socket_traits_unix.hpp.
static bool claw::socket_traits_unix::is_open | ( | descriptor | d | ) | [inline, static] |
Tell if a descriptor is a opened socket.
d | The descriptor to test. |
Definition at line 221 of file socket_traits_unix.hpp.
Referenced by claw::net::basic_socketbuf< CharT, Traits >::open().
static bool claw::socket_traits_unix::listen | ( | descriptor | d, | |
int | port, | |||
unsigned int | queue_size | |||
) | [inline, static] |
Open a socket for incoming connexions.
d | The descriptor of the socket to open. | |
port | The port to connect to. | |
queue_size | The size of the queue for incoming connexions. |
Definition at line 144 of file socket_traits_unix.hpp.
References CLAW_PRECOND, and invalid_socket.
Referenced by claw::net::socket_server::open().
00145 { 00146 CLAW_PRECOND( d != invalid_socket ); 00147 00148 struct sockaddr_in addr; 00149 00150 memset (&addr, '\0', sizeof(addr)); 00151 addr.sin_family = AF_INET; 00152 addr.sin_port = htons(port); 00153 addr.sin_addr.s_addr = htonl(INADDR_ANY); 00154 00155 if ( bind(d, (struct sockaddr*)&addr, sizeof(addr)) != -1 ) 00156 return ::listen(d, queue_size) != -1; 00157 else 00158 return false; 00159 } // socket_traits_unix::connect()
static descriptor claw::socket_traits_unix::open | ( | ) | [inline, static] |
Open a socket.
Definition at line 85 of file socket_traits_unix.hpp.
References invalid_socket.
00086 { 00087 descriptor fd = invalid_socket; 00088 00089 fd = socket(AF_INET, SOCK_STREAM, 0); 00090 00091 return fd; 00092 } // socket_traits_unix::open()
static bool claw::socket_traits_unix::release | ( | ) | [inline, static] |
Close the socket library.
Definition at line 75 of file socket_traits_unix.hpp.
static bool claw::socket_traits_unix::select_read | ( | descriptor | d, | |
int | time_limit = -1 | |||
) | [inline, static] |
Select a socket for reading.
d | The descriptor of the socket to read. | |
time_limit | Maximum of seconds to wait before considering there's nothing to read. If time_limit is negative, the method wait until there is something to read. |
Definition at line 170 of file socket_traits_unix.hpp.
References CLAW_PRECOND, and invalid_socket.
Referenced by claw::net::socket_server::accept(), and claw::net::basic_socketbuf< CharT, Traits >::underflow().
00171 { 00172 CLAW_PRECOND( d != invalid_socket ); 00173 00174 struct timeval tv, *ptv; 00175 fd_set fds; 00176 00177 if ( time_limit < 0 ) 00178 ptv = NULL; 00179 else 00180 { 00181 tv.tv_sec = time_limit; 00182 tv.tv_usec = 0; 00183 00184 ptv = &tv; 00185 } 00186 00187 FD_ZERO(&fds); 00188 FD_SET(d, &fds); 00189 00190 select( d+1, &fds, NULL, NULL, ptv ); 00191 00192 return FD_ISSET( d, &fds ); 00193 } // socket_traits_unix::select_read()
static bool claw::socket_traits_unix::valid_descriptor | ( | descriptor | d | ) | [inline, static] |
Tell if a descriptor is a valid socket descriptor.
d | The descriptor to test. |
Definition at line 211 of file socket_traits_unix.hpp.
References invalid_socket.
Referenced by claw::net::basic_socketbuf< CharT, Traits >::connect(), claw::net::basic_socket::is_open(), and claw::net::basic_socket::open().
00212 { 00213 return d != invalid_socket; 00214 } // socket_traits_unix::valid_descriptor()
const descriptor claw::socket_traits_unix::invalid_socket = -1 [static] |
Invalid socket descriptor.
Definition at line 57 of file socket_traits_unix.hpp.
Referenced by claw::net::basic_socket::close(), connect(), listen(), open(), select_read(), and valid_descriptor().