259 lines
7.5 KiB
C
259 lines
7.5 KiB
C
/****************************************************************************
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* examples/tcpblaster/tcpblaster_client.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include "config.h"
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <poll.h>
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#include <string.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include "tcpblaster.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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void tcpblaster_client(void)
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{
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#ifdef CONFIG_EXAMPLES_TCPBLASTER_IPv6
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struct sockaddr_in6 server;
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#else
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struct sockaddr_in server;
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#endif
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struct timespec start;
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socklen_t addrlen;
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FAR char *outbuf;
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unsigned long sendtotal;
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unsigned long totallost;
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int sendcount;
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int partials;
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int sockfd;
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int nbytessent;
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int ch;
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int i;
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/* Allocate buffers */
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outbuf = (FAR char *)malloc(SENDSIZE);
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if (!outbuf)
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{
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printf("client: failed to allocate buffers\n");
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exit(1);
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}
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/* Create a new TCP socket */
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sockfd = socket(PF_INETX, SOCK_STREAM, 0);
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if (sockfd < 0)
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{
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printf("client socket failure %d\n", errno);
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goto errout_with_buffers;
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}
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/* Set up the server address */
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#ifdef CONFIG_EXAMPLES_TCPBLASTER_IPv6
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server.sin6_family = AF_INET6;
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server.sin6_port = HTONS(CONFIG_EXAMPLES_TCPBLASTER_SERVER_PORTNO);
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memcpy(server.sin6_addr.s6_addr16, g_tcpblasterserver_ipv6, 8 * sizeof(uint16_t));
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addrlen = sizeof(struct sockaddr_in6);
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printf("Connecting to IPv6 Address: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
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g_tcpblasterserver_ipv6[0], g_tcpblasterserver_ipv6[1],
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g_tcpblasterserver_ipv6[2], g_tcpblasterserver_ipv6[3],
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g_tcpblasterserver_ipv6[4], g_tcpblasterserver_ipv6[5],
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g_tcpblasterserver_ipv6[6], g_tcpblasterserver_ipv6[7]);
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#else
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server.sin_family = AF_INET;
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server.sin_port = HTONS(CONFIG_EXAMPLES_TCPBLASTER_SERVER_PORTNO);
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server.sin_addr.s_addr = (in_addr_t)g_tcpblasterserver_ipv4;
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addrlen = sizeof(struct sockaddr_in);
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printf("Connecting to IPv4 Address: %08lx\n",
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(unsigned long)g_tcpblasterserver_ipv4);
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#endif
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/* Connect the socket to the server */
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if (connect(sockfd, (FAR struct sockaddr *)&server, addrlen) < 0)
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{
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printf("client: connect failure: %d\n", errno);
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goto errout_with_socket;
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}
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printf("client: Connected\n");
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/* Initialize the buffer */
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ch = 0x20;
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for (i = 0; i < SENDSIZE; i++ )
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{
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outbuf[i] = ch;
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if (++ch > 0x7e)
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{
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ch = 0x20;
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}
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}
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/* Then send messages forever */
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sendcount = 0;
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sendtotal = 0;
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partials = 0;
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totallost = 0;
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clock_gettime(CLOCK_REALTIME, &start);
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for (; ; )
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{
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#ifdef CONFIG_EXAMPLES_TCPBLASTER_POLLOUT
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struct pollfd fds[1];
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int ret;
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memset(fds, 0, 1 * sizeof(struct pollfd));
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fds[0].fd = sockfd;
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fds[0].events = POLLOUT | POLLHUP;
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/* Wait until we can send data or until the connection is lost */
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ret = poll(fds, 1, -1);
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if (ret < 0)
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{
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printf("client: ERROR poll failed: %d\n", errno);
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goto errout_with_socket;
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}
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if ((fds[0].revents & POLLHUP) != 0)
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{
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printf("client: WARNING poll returned POLLHUP\n");
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goto errout_with_socket;
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}
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#endif
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nbytessent = send(sockfd, outbuf, SENDSIZE, 0);
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if (nbytessent < 0)
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{
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printf("client: send failed: %d\n", errno);
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goto errout_with_socket;
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}
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else if (nbytessent > 0 && nbytessent < SENDSIZE)
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{
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/* Partial buffers can be sent if there is insufficient buffering
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* space to buffer the whole SENDSIZE request. This is not an
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* error, but is an interesting thing to keep track of.
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*/
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partials++;
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totallost += (SENDSIZE - nbytessent);
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}
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else if (nbytessent != SENDSIZE)
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{
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printf("client: Bad send length=%d: %d of \n",
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nbytessent, SENDSIZE);
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goto errout_with_socket;
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}
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sendtotal += nbytessent;
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if (++sendcount >= 50)
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{
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struct timespec elapsed;
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struct timespec curr;
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float fkbrecvd;
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float felapsed;
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clock_gettime(CLOCK_REALTIME, &curr);
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elapsed.tv_sec = curr.tv_sec - start.tv_sec;
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if (curr.tv_nsec >= start.tv_nsec)
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{
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elapsed.tv_nsec = curr.tv_nsec - start.tv_nsec;
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}
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else
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{
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unsigned long borrow = 1000000000 - start.tv_nsec;
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elapsed.tv_sec--;
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elapsed.tv_nsec = curr.tv_nsec + borrow;
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}
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fkbrecvd = (float)sendtotal / 1024.0;
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felapsed = (float)elapsed.tv_sec + (float)elapsed.tv_nsec / 1000000000.0;
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printf("Sent %d buffers: %7.1f Kb (avg %5.1f Kb) in "
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"%6.2f Sec (%7.1f Kb/Sec)\n",
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sendcount, fkbrecvd, fkbrecvd / sendcount, felapsed,
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fkbrecvd / felapsed);
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if (partials > 0)
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{
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float fkblost;
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fkblost = (float)totallost / 1024.0;
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printf("Partial buffers sent: %d Data not sent: %7.1f Kb\n",
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partials, fkblost);
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}
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sendcount = 0;
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sendtotal = 0;
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partials = 0;
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totallost = 0;
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clock_gettime(CLOCK_REALTIME, &start);
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}
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}
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free(outbuf);
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return;
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errout_with_socket:
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close(sockfd);
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errout_with_buffers:
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free(outbuf);
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exit(1);
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}
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