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Diffstat (limited to 'apps/examples/nettest/nettest_server.c')
-rw-r--r-- | apps/examples/nettest/nettest_server.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/apps/examples/nettest/nettest_server.c b/apps/examples/nettest/nettest_server.c new file mode 100644 index 000000000..76a20e652 --- /dev/null +++ b/apps/examples/nettest/nettest_server.c @@ -0,0 +1,245 @@ +/**************************************************************************** + * examples/nettest/nettest-server.c + * + * Copyright (C) 2007, 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 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 <stdlib.h> +#include <unistd.h> +#include <errno.h> + +#include "nettest.h" + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +void recv_server(void) +{ + struct sockaddr_in myaddr; +#ifdef NETTEST_HAVE_SOLINGER + struct linger ling; +#endif + char *buffer; + int listensd; + int acceptsd; + socklen_t addrlen; + int nbytesread; +#ifndef CONFIG_EXAMPLE_NETTEST_PERFORMANCE + int totalbytesread; + int nbytessent; + int ch; + int i; +#endif + int optval; + + /* Allocate a BIG buffer */ + + buffer = (char*)malloc(2*SENDSIZE); + if (!buffer) + { + message("server: failed to allocate buffer\n"); + exit(1); + } + + + /* Create a new TCP socket */ + + listensd = socket(PF_INET, SOCK_STREAM, 0); + if (listensd < 0) + { + message("server: socket failure: %d\n", errno); + goto errout_with_buffer; + } + + /* Set socket to reuse address */ + + optval = 1; + if (setsockopt(listensd, SOL_SOCKET, SO_REUSEADDR, (void*)&optval, sizeof(int)) < 0) + { + message("server: setsockopt SO_REUSEADDR failure: %d\n", errno); + goto errout_with_listensd; + } + + /* Bind the socket to a local address */ + + myaddr.sin_family = AF_INET; + myaddr.sin_port = HTONS(PORTNO); + myaddr.sin_addr.s_addr = INADDR_ANY; + + if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0) + { + message("server: bind failure: %d\n", errno); + goto errout_with_listensd; + } + + /* Listen for connections on the bound TCP socket */ + + if (listen(listensd, 5) < 0) + { + message("server: listen failure %d\n", errno); + goto errout_with_listensd; + } + + /* Accept only one connection */ + + message("server: Accepting connections on port %d\n", PORTNO); + addrlen = sizeof(struct sockaddr_in); + acceptsd = accept(listensd, (struct sockaddr*)&myaddr, &addrlen); + if (acceptsd < 0) + { + message("server: accept failure: %d\n", errno); + goto errout_with_listensd; + } + message("server: Connection accepted -- receiving\n"); + + /* Configure to "linger" until all data is sent when the socket is closed */ + +#ifdef NETTEST_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) + { + message("server: setsockopt SO_LINGER failure: %d\n", errno); + goto errout_with_acceptsd; + } +#endif + +#ifdef CONFIG_EXAMPLE_NETTEST_PERFORMANCE + /* Then receive data forever */ + + for (;;) + { + nbytesread = recv(acceptsd, buffer, 2*SENDSIZE, 0); + if (nbytesread < 0) + { + message("server: recv failed: %d\n", errno); + goto errout_with_acceptsd; + } + else if (nbytesread == 0) + { + message("server: The client broke the connection\n"); + goto errout_with_acceptsd; + } + message("Received %d bytes\n", nbytesread); + } +#else + /* Receive canned message */ + + totalbytesread = 0; + while (totalbytesread < SENDSIZE) + { + message("server: Reading...\n"); + nbytesread = recv(acceptsd, &buffer[totalbytesread], 2*SENDSIZE - totalbytesread, 0); + if (nbytesread < 0) + { + message("server: recv failed: %d\n", errno); + goto errout_with_acceptsd; + } + else if (nbytesread == 0) + { + message("server: The client broke the connection\n"); + goto errout_with_acceptsd; + } + + totalbytesread += nbytesread; + message("server: Received %d of %d bytes\n", totalbytesread, SENDSIZE); + } + + /* Verify the message */ + + if (totalbytesread != SENDSIZE) + { + message("server: Received %d / Expected %d bytes\n", totalbytesread, SENDSIZE); + goto errout_with_acceptsd; + } + + ch = 0x20; + for (i = 0; i < SENDSIZE; i++ ) + { + if (buffer[i] != ch) + { + message("server: Byte %d is %02x / Expected %02x\n", i, buffer[i], ch); + goto errout_with_acceptsd; + } + + if (++ch > 0x7e) + { + ch = 0x20; + } + } + + /* Then send the same data back to the client */ + + message("server: Sending %d bytes\n", totalbytesread); + nbytessent = send(acceptsd, buffer, totalbytesread, 0); + if (nbytessent <= 0) + { + message("server: send failed: %d\n", errno); + goto errout_with_acceptsd; + } + message("server: Sent %d bytes\n", nbytessent); + + /* If this platform only does abortive disconnects, then wait a bit to get the + * client side a change to receive the data. + */ + +#if 1 /* Do it for all platforms */ + message("server: Wait before closing\n"); + sleep(60); +#endif + + close(listensd); + close(acceptsd); + free(buffer); + return; +#endif + +errout_with_acceptsd: + close(acceptsd); + +errout_with_listensd: + close(listensd); + +errout_with_buffer: + free(buffer); + exit(1); +} |