/****************************************************************************
* examples/tcpblaster/tcpblaster_client.c
*
* Copyright (C) 2018 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 "config.h"
#include <sys/socket.h>
#include <netinet/in.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include "tcpblaster.h"
/****************************************************************************
* Public Functions
****************************************************************************/
void tcpblaster_client(void)
{
#ifdef CONFIG_EXAMPLES_TCPBLASTER_IPv6
struct sockaddr_in6 server;
#else
struct sockaddr_in server;
#endif
struct timespec start;
socklen_t addrlen;
char *outbuf;
unsigned long sendtotal;
unsigned long totallost;
int sendcount;
int partials;
int sockfd;
int nbytessent;
int ch;
int i;
/* Allocate buffers */
outbuf = (char*)malloc(SENDSIZE);
if (!outbuf)
{
printf("client: failed to allocate buffers\n");
exit(1);
}
/* Create a new TCP socket */
sockfd = socket(PF_INETX, SOCK_STREAM, 0);
if (sockfd < 0)
{
printf("client socket failure %d\n", errno);
goto errout_with_buffers;
}
/* Set up the server address */
#ifdef CONFIG_EXAMPLES_TCPBLASTER_IPv6
server.sin6_family = AF_INET6;
server.sin6_port = HTONS(CONFIG_EXAMPLES_TCPBLASTER_SERVER_PORTNO);
memcpy(server.sin6_addr.s6_addr16, g_tcpblasterserver_ipv6, 8 * sizeof(uint16_t));
addrlen = sizeof(struct sockaddr_in6);
printf("Connecting to IPv6 Address: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
g_tcpblasterserver_ipv6[0], g_tcpblasterserver_ipv6[1], g_tcpblasterserver_ipv6[2], g_tcpblasterserver_ipv6[3],
g_tcpblasterserver_ipv6[4], g_tcpblasterserver_ipv6[5], g_tcpblasterserver_ipv6[6], g_tcpblasterserver_ipv6[7]);
#else
server.sin_family = AF_INET;
server.sin_port = HTONS(CONFIG_EXAMPLES_TCPBLASTER_SERVER_PORTNO);
server.sin_addr.s_addr = (in_addr_t)g_tcpblasterserver_ipv4;
addrlen = sizeof(struct sockaddr_in);
printf("Connecting to IPv4 Address: %08lx\n", (unsigned long)g_tcpblasterserver_ipv4);
#endif
/* Connect the socket to the server */
if (connect( sockfd, (struct sockaddr*)&server, addrlen) < 0)
{
printf("client: connect failure: %d\n", errno);
goto errout_with_socket;
}
printf("client: Connected\n");
/* Initialize the buffer */
ch = 0x20;
for (i = 0; i < SENDSIZE; i++ )
{
outbuf[i] = ch;
if (++ch > 0x7e)
{
ch = 0x20;
}
}
/* Then send messages forever */
sendcount = 0;
sendtotal = 0;
partials = 0;
totallost = 0;
(void)clock_gettime(CLOCK_REALTIME, &start);
for (; ; )
{
nbytessent = send(sockfd, outbuf, SENDSIZE, 0);
if (nbytessent < 0)
{
printf("client: send failed: %d\n", errno);
goto errout_with_socket;
}
else if (nbytessent > 0 && nbytessent < SENDSIZE)
{
/* Partial buffers can be sent if there is insufficient buffering
* space to buffer the whole SENDSIZE request. This is not an
* error, but is an interesting thing to keep track of.
*/
partials++;
totallost += (SENDSIZE - nbytessent);
}
else if (nbytessent != SENDSIZE)
{
printf("client: Bad send length=%d: %d of \n",
nbytessent, SENDSIZE);
goto errout_with_socket;
}
sendtotal += nbytessent;
if (++sendcount >= 50)
{
struct timespec elapsed;
struct timespec curr;
float fkbrecvd;
float felapsed;
(void)clock_gettime(CLOCK_REALTIME, &curr);
elapsed.tv_sec = curr.tv_sec - start.tv_sec;
if (curr.tv_nsec >= start.tv_nsec)
{
elapsed.tv_nsec = curr.tv_nsec - start.tv_nsec;
}
else
{
unsigned long borrow = 1000000000 - start.tv_nsec;
elapsed.tv_sec--;
elapsed.tv_nsec = curr.tv_nsec + borrow;
}
fkbrecvd = (float)sendtotal / 1024.0;
felapsed = (float)elapsed.tv_sec + (float)elapsed.tv_nsec / 1000000000.0;
printf("Sent %d buffers: %7.1f Kb (avg %5.1f Kb) in %6.2f Sec (%7.1f Kbps)\n",
sendcount, fkbrecvd, fkbrecvd/sendcount, felapsed, fkbrecvd/felapsed);
if (partials > 0)
{
float fkblost;
fkblost = (float)totallost / 1024.0;
printf("Partial buffers sent: %d Data not sent: %7.1f Kb\n",
partials, fkblost);
}
sendcount = 0;
sendtotal = 0;
partials = 0;
totallost = 0;
(void)clock_gettime(CLOCK_REALTIME, &start);
}
}
free(outbuf);
return;
errout_with_socket:
close(sockfd);
errout_with_buffers:
free(outbuf);
exit(1);
}