/****************************************************************************
* apps/examples/tcpblaster/tcpblaster_client.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* 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 <poll.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;
FAR char *outbuf;
unsigned long sendtotal;
unsigned long totallost;
int groupcount;
int sendcount;
int partials;
int sockfd;
int nbytessent;
int ch;
int i;
char timebuff[100];
setbuf(stdout, NULL);
/* Allocate buffers */
outbuf = (FAR 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_addr, g_tcpblasterserver_ipv6, 16);
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, (FAR 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 */
groupcount = 0;
sendcount = 0;
sendtotal = 0;
partials = 0;
totallost = 0;
clock_gettime(CLOCK_REALTIME, &start);
for (; ; )
{
#ifdef CONFIG_EXAMPLES_TCPBLASTER_POLLOUT
struct pollfd fds[1];
int ret;
memset(fds, 0, 1 * sizeof(struct pollfd));
fds[0].fd = sockfd;
fds[0].events = POLLOUT;
/* Wait until we can send data or until the connection is lost */
ret = poll(fds, 1, -1);
if (ret < 0)
{
printf("client: ERROR poll failed: %d\n", errno);
goto errout_with_socket;
}
if ((fds[0].revents & POLLHUP) != 0)
{
printf("client: WARNING poll returned POLLHUP\n");
goto errout_with_socket;
}
#endif
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: of %d\n",
nbytessent, SENDSIZE);
goto errout_with_socket;
}
sendtotal += nbytessent;
if (++sendcount >= GROUPSIZE)
{
struct timespec elapsed;
struct timespec curr;
float fkbrecvd;
float felapsed;
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;
}
strftime(timebuff, 100,
"%Y-%m-%d %H:%M:%S.000", localtime(&curr.tv_sec));
fkbrecvd = sendtotal / 1024.0f;
felapsed = elapsed.tv_sec + elapsed.tv_nsec / 1000000000.0f;
printf("[%s] %d: Sent %d %d-byte buffers: %7.1fKB "
"(avg %5.1f KB) in %6.2f seconds (%7.1f KB/second)\n",
timebuff, groupcount, sendcount, SENDSIZE, 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;
groupcount++;
clock_gettime(CLOCK_REALTIME, &start);
}
}
free(outbuf);
return;
errout_with_socket:
close(sockfd);
errout_with_buffers:
free(outbuf);
exit(1);
}