diff options
Diffstat (limited to 'apps/examples/poll/net_listener.c')
-rw-r--r-- | apps/examples/poll/net_listener.c | 428 |
1 files changed, 0 insertions, 428 deletions
diff --git a/apps/examples/poll/net_listener.c b/apps/examples/poll/net_listener.c deleted file mode 100644 index 2be98673c..000000000 --- a/apps/examples/poll/net_listener.c +++ /dev/null @@ -1,428 +0,0 @@ -/**************************************************************************** - * examples/poll/net_listener.c - * - * Copyright (C) 2008-2009, 2011-2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/stat.h> -#include <sys/select.h> -#include <sys/socket.h> -#include <sys/ioctl.h> - -#include <stdint.h> -#include <stdbool.h> -#include <stdio.h> -#include <unistd.h> -#include <string.h> -#include <pthread.h> -#include <errno.h> -#include <debug.h> - -#include <net/if.h> -#include <apps/netutils/uiplib.h> - -#include "poll_internal.h" - -/**************************************************************************** - * Definitions - ****************************************************************************/ - -#define IOBUFFER_SIZE 80 - -/**************************************************************************** - * Private Types - ****************************************************************************/ - -struct net_listener_s -{ - struct sockaddr_in addr; - fd_set master; - fd_set working; - char buffer[IOBUFFER_SIZE]; - int listensd; - int mxsd; -}; - -/**************************************************************************** - * Private Data - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: net_closeclient - ****************************************************************************/ - -static bool net_closeclient(struct net_listener_s *nls, int sd) -{ - message("net_listener: Closing host side connection sd=%d\n", sd); - close(sd); - FD_CLR(sd, &nls->master); - - /* If we just closed the max SD, then search downward for the next biggest SD. */ - - while (FD_ISSET(nls->mxsd, &nls->master) == false) - { - nls->mxsd -= 1; - } - return true; -} - -/**************************************************************************** - * Name: net_incomingdata - ****************************************************************************/ - -static inline bool net_incomingdata(struct net_listener_s *nls, int sd) -{ - char *ptr; - int nbytes; - int ret; - - /* Read data from the socket */ - -#ifdef FIONBIO - for (;;) -#endif - { - message("net_listener: Read data from sd=%d\n", sd); - ret = recv(sd, nls->buffer, IOBUFFER_SIZE, 0); - if (ret < 0) - { - if (errno != EINTR) - { - message("net_listener: recv failed sd=%d: %d\n", sd, errno); - if (errno != EAGAIN) - { - net_closeclient(nls, sd); - return false; - } - } - } - else if (ret == 0) - { - message("net_listener: Client connection lost sd=%d\n", sd); - net_closeclient(nls, sd); - return false; - } - else - { - nls->buffer[ret]='\0'; - message("poll_listener: Read '%s' (%d bytes)\n", nls->buffer, ret); - - /* Echo the data back to the client */ - - for (nbytes = ret, ptr = nls->buffer; nbytes > 0; ) - { - ret = send(sd, ptr, nbytes, 0); - if (ret < 0) - { - if (errno != EINTR) - { - message("net_listener: Send failed sd=%d: \n", sd, errno); - net_closeclient(nls, sd); - return false; - } - } - else - { - nbytes -= ret; - ptr += ret; - } - } - } - } - return 0; -} - -/**************************************************************************** - * Name: net_connection - ****************************************************************************/ - -static inline bool net_connection(struct net_listener_s *nls) -{ - int sd; - - /* Loop until all connections have been processed */ - -#ifdef FIONBIO - for (;;) -#endif - { - message("net_listener: Accepting new connection on sd=%d\n", nls->listensd); - - sd = accept(nls->listensd, NULL, NULL); - if (sd < 0) - { - message("net_listener: accept failed: %d\n", errno); - - if (errno != EINTR) - { - return false; - } - } - else - { - /* Add the new connection to the master set */ - - message("net_listener: Connection accepted for sd=%d\n", sd); - - FD_SET(sd, &nls->master); - if (sd > nls->mxsd) - { - nls->mxsd = sd; - } - return true; - } - } - return false; -} - -/**************************************************************************** - * Name: net_mksocket - ****************************************************************************/ - -static inline bool net_mksocket(struct net_listener_s *nls) -{ - int value; - int ret; - - /* Create a listening socket */ - - message("net_listener: Initializing listener socket\n"); - nls->listensd = socket(AF_INET, SOCK_STREAM, 0); - if (nls->listensd < 0) - { - message("net_listener: socket failed: %d\n", errno); - return false; - } - - /* Configure the socket */ - - value = 1; - ret = setsockopt(nls->listensd, SOL_SOCKET, SO_REUSEADDR, (char*)&value, sizeof(int)); - if (ret < 0) - { - message("net_listener: setsockopt failed: %d\n", errno); - close(nls->listensd); - return false; - } - - /* Set the socket to non-blocking */ - -#ifdef FIONBIO - ret = ioctl(nls->listensd, FIONBIO, (char *)&value); - if (ret < 0) - { - message("net_listener: ioctl failed: %d\n", errno); - close(nls->listensd); - return false; - } -#endif - - /* Bind the socket */ - - memset(&nls->addr, 0, sizeof(struct sockaddr_in)); - nls->addr.sin_family = AF_INET; - nls->addr.sin_addr.s_addr = htonl(INADDR_ANY); - nls->addr.sin_port = htons(LISTENER_PORT); - ret = bind(nls->listensd, (struct sockaddr *)&nls->addr, sizeof(struct sockaddr_in)); - if (ret < 0) - { - message("net_listener: bind failed: %d\n", errno); - close(nls->listensd); - return false; - } - - /* Mark the socket as a listener */ - - ret = listen(nls->listensd, 32); - if (ret < 0) - { - message("net_listener: bind failed: %d\n", errno); - close(nls->listensd); - return false; - } - - return true; -} - -/**************************************************************************** - * Name: net_configure - ****************************************************************************/ - -static void net_configure(void) -{ - struct in_addr addr; -#if defined(CONFIG_EXAMPLES_POLL_NOMAC) - uint8_t mac[IFHWADDRLEN]; -#endif - - /* Configure uIP */ - /* Many embedded network interfaces must have a software assigned MAC */ - -#ifdef CONFIG_EXAMPLES_POLL_NOMAC - mac[0] = 0x00; - mac[1] = 0xe0; - mac[2] = 0xde; - mac[3] = 0xad; - mac[4] = 0xbe; - mac[5] = 0xef; - uip_setmacaddr("eth0", mac); -#endif - - /* Set up our host address */ - - addr.s_addr = HTONL(CONFIG_EXAMPLES_POLL_IPADDR); - uip_sethostaddr("eth0", &addr); - - /* Set up the default router address */ - - addr.s_addr = HTONL(CONFIG_EXAMPLES_POLL_DRIPADDR); - uip_setdraddr("eth0", &addr); - - /* Setup the subnet mask */ - - addr.s_addr = HTONL(CONFIG_EXAMPLES_POLL_NETMASK); - uip_setnetmask("eth0", &addr); -} - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: net_listener - ****************************************************************************/ - -void *net_listener(pthread_addr_t pvarg) -{ - struct net_listener_s nls; - struct timeval timeout; - int nsds; - int ret; - int i; - - /* Configure uIP */ - - net_configure(); - - /* Set up a listening socket */ - - memset(&nls, 0, sizeof(struct net_listener_s)); - if (!net_mksocket(&nls)) - { - return (void*)1; - } - - /* Initialize the 'master' file descriptor set */ - - FD_ZERO(&nls.master); - nls.mxsd = nls.listensd; - FD_SET(nls.listensd, &nls.master); - - /* Set up a 3 second timeout */ - - timeout.tv_sec = NET_LISTENER_DELAY; - timeout.tv_usec = 0; - - /* Loop waiting for incoming connections or for incoming data - * on any of the connect sockets. - */ - - for (;;) - { - /* Wait on select */ - - message("net_listener: Calling select(), listener sd=%d\n", nls.listensd); - memcpy(&nls.working, &nls.master, sizeof(fd_set)); - ret = select(nls.mxsd + 1, (FAR fd_set*)&nls.working, (FAR fd_set*)NULL, (FAR fd_set*)NULL, &timeout); - if (ret < 0) - { - message("net_listener: select failed: %d\n", errno); - break; - } - - /* Check for timeout */ - - if (ret == 0) - { - message("net_listener: Timeout\n"); - continue; - } - - /* Find which descriptors caused the wakeup */ - - nsds = ret; - for (i = 0; i <= nls.mxsd && nsds > 0; i++) - { - /* Is this descriptor ready? */ - - if (FD_ISSET(i, &nls.working)) - { - /* Yes, is it our listener? */ - - message("net_listener: Activity on sd=%d\n", i); - - nsds--; - if (i == nls.listensd) - { - (void)net_connection(&nls); - } - else - { - net_incomingdata(&nls, i); - } - } - } - } - - /* Cleanup */ - -#if 0 /* Don't get here */ - for (i = 0; i <= nls.mxsd; +i++) - { - if (FD_ISSET(i, &nls.master)) - { - close(i); - } - } -#endif - return NULL; /* Keeps some compilers from complaining */ -} |