5  * @defgroup socket Socket API
7  * BSD-style socket API.\n
10  * Header is in posix/sys/socket.h\b
193  * select on the same socket...
204 /** Contains all internal pointers and states used for a socket */
206   /** sockets currently are built on netconns, each socket has one netconn */
218   /** error happened for this socket, set by event_callback(), tested by select */
220   /** last error that occurred on this socket (in fact, all our errnos fit into an u8_t) */
222   /** counter of how many threads are waiting for this socket using select */
270 /* Define the number of IPv4 multicast memberships, default is one per socket */
276    a socket is closed */
278   /** the socket */
353  * Map a externally used socket index to the internal socket representation.
355  * @param s externally used socket index
356  * @return struct lwip_sock for the socket or NULL if not found
385  * @param s externally used socket index
386  * @return struct lwip_sock for the socket or NULL if not found
404  * @param s externally used socket index
405  * @return struct lwip_sock for the socket or NULL if not found
414  * Allocate a new socket for a given netconn.
416  * @param newconn the netconn for which to allocate a socket
417  * @param accepted 1 if socket has been created by accept(),
418  *                 0 if socket has been created by socket()
419  * @return the index of the new socket; -1 on error
427   /* allocate a new socket identifier */  in alloc_socket()
429     /* Protect socket array */  in alloc_socket()
433       /* The socket is not yet known to anyone, so no need to protect  in alloc_socket()
439       /* TCP sendbuf is empty, but the socket is not yet writable until connected  in alloc_socket()
454 /** Free a socket. The socket's netconn must have been
457  * @param sock the socket to free
470   /* Protect socket array */  in free_socket()
483 /* Below this, the well-known socket functions are implemented.
533 …LWIP_ASSERT("invalid socket index", (newsock >= LWIP_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + LW…  in lwip_accept()
538    * though the server task might not have created a new socket yet.  in lwip_accept()
539    * In that case, newconn->socket is counted down (newconn->socket--),  in lwip_accept()
543   nsock->rcvevent += (s16_t)(-1 - newconn->socket);  in lwip_accept()
544   newconn->socket = newsock;  in lwip_accept()
594     /* sockaddr does not match socket type (IPv4/IPv6) */  in lwip_bind()
679     /* sockaddr does not match socket type (IPv4/IPv6) */  in lwip_connect()
725  * Set a socket into listen mode.
726  * The socket may not have been used for another connection previously.
728  * @param s the socket to set to listening mode
915       /* If this is a TCP socket, check if there is data left in the  in lwip_recvfrom()
1286   conn->socket = i;  in lwip_socket()
1316  * Go through the readset and writeset lists and see which socket of the sockets
1320  * @param maxfdp1 the highest socket index in the sets
1342   /* Go through each socket in each list to count number of sockets which  in lwip_selscan()
1351     /* First get the socket's status (protected)... */  in lwip_selscan()
1362       /* See if netconn of this socket is ready for read */  in lwip_selscan()
1368       /* See if netconn of this socket is ready for write */  in lwip_selscan()
1374       /* See if netconn of this socket had an error */  in lwip_selscan()
1415   /* Go through each socket in each list to count number of sockets which  in lwip_select()
1464     /* Increase select_waiting for each socket we are interested in */  in lwip_select()
1477           /* Not a valid socket */  in lwip_select()
1511     /* Decrease select_waiting for each socket we are interested in */  in lwip_select()
1526           /* Not a valid socket */  in lwip_select()
1558       /* This happens when a socket got closed while waiting */  in lwip_select()
1591  * Callback registered in the netconn layer for each socket-netconn.
1605   /* Get socket */  in event_callback()
1607     s = conn->socket;  in event_callback()
1610        * the server task might not have created a new socket yet.  in event_callback()
1613        * can happen before the new socket is set up. */  in event_callback()
1615       if (conn->socket < 0) {  in event_callback()
1617           conn->socket--;  in event_callback()
1622       s = conn->socket;  in event_callback()
1658     /* noone is waiting for this socket, no need to check select_cb_list */  in event_callback()
1663   /* Now decide if anyone is waiting for this socket */  in event_callback()
1676       /* Test this select call for our socket */  in event_callback()
1963       default: /* unrecognized socket type */  in lwip_getsockopt_impl()
1966                     ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n",  in lwip_getsockopt_impl()
2163     /* If this is no UDP lite socket, ignore any options. */  in lwip_getsockopt_impl()
2450         /* If this is a TCP or a RAW socket, ignore these options. */  in lwip_setsockopt_impl()
2451         /* @todo: assign membership to this socket so that it is dropped when closing the socket */  in lwip_setsockopt_impl()
2563     /* If this is no UDP lite socket, ignore any options. */  in lwip_setsockopt_impl()
2686     /* we come here if either LWIP_FIONREAD_LINUXMODE==0 or this is a TCP socket */  in lwip_ioctl()
2769 /** Register a new IGMP membership. On socket close, the membership is dropped automatically.
2797  * on socket close.
2823 /** Drop all memberships of a socket that were not dropped explicitly via setsockopt.