diff options
Diffstat (limited to 'nuttx/netutils/uiplib/uip_server.c')
| -rw-r--r-- | nuttx/netutils/uiplib/uip_server.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nuttx/netutils/uiplib/uip_server.c b/nuttx/netutils/uiplib/uip_server.c new file mode 100644 index 000000000..f0729a853 --- /dev/null +++ b/nuttx/netutils/uiplib/uip_server.c @@ -0,0 +1,182 @@ +/**************************************************************************** + * netutils/uiplib/uip_server.c + * + * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 Gregory Nutt 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 <sys/types.h> +#include <sys/socket.h> +#include <netinet/in.h> + +#include <stdio.h> +#include <unistd.h> +#include <pthread.h> +#include <errno.h> +#include <debug.h> + +#include <net/uip/uip-lib.h> + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: uip_server + * + * Description: + * Implement basic server logic + * + * Parameters: + * portno The port to listen on (in network byte order) + * handler The entrypoint of the task to spawn when a new connection is + * accepted. + * stacksize The stack size needed by the spawned task + * + * Return: + * Does not return unless an error occurs. + * + ****************************************************************************/ + +void uip_server(uint16 portno, pthread_startroutine_t handler, int stacksize) +{ + struct sockaddr_in myaddr; +#ifdef CONFIG_NET_HAVE_SOLINGER + struct linger ling; +#endif + pthread_t child; + pthread_attr_t attr; + socklen_t addrlen; + int listensd; + int acceptsd; +#ifdef CONFIG_NET_HAVE_REUSEADDR + int optval; +#endif + + /* Create a new TCP socket to use to listen for connections */ + + listensd = socket(PF_INET, SOCK_STREAM, 0); + if (listensd < 0) + { + dbg("socket failure: %d\n", errno); + return; + } + + /* Set socket to reuse address */ + +#ifdef CONFIG_NET_HAVE_REUSEADDR + optval = 1; + if (setsockopt(listensd, SOL_SOCKET, SO_REUSEADDR, (void*)&optval, sizeof(int)) < 0) + { + dbg("setsockopt SO_REUSEADDR failure: %d\n", errno); + goto errout_with_socket; + } +#endif + + /* Bind the socket to a local address */ + + myaddr.sin_family = AF_INET; + myaddr.sin_port = portno; + myaddr.sin_addr.s_addr = INADDR_ANY; + + if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0) + { + dbg("bind failure: %d\n", errno); + goto errout_with_socket; + } + + /* Listen for connections on the bound TCP socket */ + + if (listen(listensd, 5) < 0) + { + dbg("listen failure %d\n", errno); + goto errout_with_socket; + } + + /* Begin accepting connections */ + + dbg("Accepting connections on port %d\n", ntohs(portno)); + for (;;) + { + addrlen = sizeof(struct sockaddr_in); + acceptsd = accept(listensd, (struct sockaddr*)&myaddr, &addrlen); + if (acceptsd < 0) + { + dbg("accept failure: %d\n", errno); + break;; + } + dbg("Connection accepted -- spawning sd=%d\n", acceptsd); + + /* Configure to "linger" until all data is sent when the socket is closed */ + +#ifdef CONFIG_NET_HAVE_SOLINGER + ling.l_onoff = 1; + ling.l_linger = 30; /* timeout is seconds */ + if (setsockopt(acceptsd, SOL_SOCKET, SO_LINGER, &ling, sizeof(struct linger)) < 0) + { + close(acceptsd); + dbg("setsockopt SO_LINGER failure: %d\n", errno); + break;; + } +#endif + + /* Create a thread to handle the connection. The socket descriptor is + * provided in as the single argument to the new thread. + */ + + (void)pthread_attr_init(&attr); + (void)pthread_attr_setstacksize(&attr, stacksize); + + if (pthread_create(&child, &attr, handler, (void*)acceptsd) != 0) + { + close(acceptsd); + dbg("create_create failed\n"); + break; + } + + /* We don't care when/how the child thread exits so detach from it now + * in order to avoid memory leaks. + */ + + (void)pthread_detach(child); + } + +errout_with_socket: + close(listensd); +} |