michael@0: /*
michael@0:  * Copyright 2009-2012 Niels Provos and Nick Mathewson
michael@0:  *
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 1. Redistributions of source code must retain the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer.
michael@0:  * 2. Redistributions in binary form must reproduce the above copyright
michael@0:  *    notice, this list of conditions and the following disclaimer in the
michael@0:  *    documentation and/or other materials provided with the distribution.
michael@0:  * 4. The name of the author may not be used to endorse or promote products
michael@0:  *    derived from this software without specific prior written permission.
michael@0:  *
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
michael@0:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
michael@0:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
michael@0:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
michael@0:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
michael@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
michael@0:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
michael@0:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
michael@0:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
michael@0:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: #include <sys/types.h>
michael@0: #ifdef WIN32
michael@0: #include <winsock2.h>
michael@0: #else
michael@0: #include <sys/socket.h>
michael@0: #include <netinet/in.h>
michael@0: # ifdef _XOPEN_SOURCE_EXTENDED
michael@0: #  include <arpa/inet.h>
michael@0: # endif
michael@0: #endif
michael@0: #include <stdlib.h>
michael@0: #include <string.h>
michael@0: #include <errno.h>
michael@0: 
michael@0: #include "event2/event.h"
michael@0: #include "event2/bufferevent.h"
michael@0: #include "event2/buffer.h"
michael@0: #include "event2/util.h"
michael@0: 
michael@0: /* for EVUTIL_ERR_CONNECT_RETRIABLE macro */
michael@0: #include "util-internal.h"
michael@0: 
michael@0: const char *resource = NULL;
michael@0: struct event_base *base = NULL;
michael@0: 
michael@0: int total_n_handled = 0;
michael@0: int total_n_errors = 0;
michael@0: int total_n_launched = 0;
michael@0: size_t total_n_bytes = 0;
michael@0: struct timeval total_time = {0,0};
michael@0: int n_errors = 0;
michael@0: 
michael@0: const int PARALLELISM = 200;
michael@0: const int N_REQUESTS = 20000;
michael@0: 
michael@0: struct request_info {
michael@0: 	size_t n_read;
michael@0: 	struct timeval started;
michael@0: };
michael@0: 
michael@0: static int launch_request(void);
michael@0: static void readcb(struct bufferevent *b, void *arg);
michael@0: static void errorcb(struct bufferevent *b, short what, void *arg);
michael@0: 
michael@0: static void
michael@0: readcb(struct bufferevent *b, void *arg)
michael@0: {
michael@0: 	struct request_info *ri = arg;
michael@0: 	struct evbuffer *input = bufferevent_get_input(b);
michael@0: 	size_t n = evbuffer_get_length(input);
michael@0: 
michael@0: 	ri->n_read += n;
michael@0: 	evbuffer_drain(input, n);
michael@0: }
michael@0: 
michael@0: static void
michael@0: errorcb(struct bufferevent *b, short what, void *arg)
michael@0: {
michael@0: 	struct request_info *ri = arg;
michael@0: 	struct timeval now, diff;
michael@0: 	if (what & BEV_EVENT_EOF) {
michael@0: 		++total_n_handled;
michael@0: 		total_n_bytes += ri->n_read;
michael@0: 		evutil_gettimeofday(&now, NULL);
michael@0: 		evutil_timersub(&now, &ri->started, &diff);
michael@0: 		evutil_timeradd(&diff, &total_time, &total_time);
michael@0: 
michael@0: 		if (total_n_handled && (total_n_handled%1000)==0)
michael@0: 			printf("%d requests done\n",total_n_handled);
michael@0: 
michael@0: 		if (total_n_launched < N_REQUESTS) {
michael@0: 			if (launch_request() < 0)
michael@0: 				perror("Can't launch");
michael@0: 		}
michael@0: 	} else {
michael@0: 		++total_n_errors;
michael@0: 		perror("Unexpected error");
michael@0: 	}
michael@0: 
michael@0: 	bufferevent_setcb(b, NULL, NULL, NULL, NULL);
michael@0: 	free(ri);
michael@0: 	bufferevent_disable(b, EV_READ|EV_WRITE);
michael@0: 	bufferevent_free(b);
michael@0: }
michael@0: 
michael@0: static void
michael@0: frob_socket(evutil_socket_t sock)
michael@0: {
michael@0: 	struct linger l;
michael@0: 	int one = 1;
michael@0: 	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&one, sizeof(one))<0)
michael@0: 		perror("setsockopt(SO_REUSEADDR)");
michael@0: 	l.l_onoff = 1;
michael@0: 	l.l_linger = 0;
michael@0: 	if (setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&l, sizeof(l))<0)
michael@0: 		perror("setsockopt(SO_LINGER)");
michael@0: }
michael@0: 
michael@0: static int
michael@0: launch_request(void)
michael@0: {
michael@0: 	evutil_socket_t sock;
michael@0: 	struct sockaddr_in sin;
michael@0: 	struct bufferevent *b;
michael@0: 
michael@0: 	struct request_info *ri;
michael@0: 
michael@0: 	memset(&sin, 0, sizeof(sin));
michael@0: 
michael@0: 	++total_n_launched;
michael@0: 
michael@0: 	sin.sin_family = AF_INET;
michael@0: 	sin.sin_addr.s_addr = htonl(0x7f000001);
michael@0: 	sin.sin_port = htons(8080);
michael@0: 	if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
michael@0: 		return -1;
michael@0: 	if (evutil_make_socket_nonblocking(sock) < 0)
michael@0: 		return -1;
michael@0: 	frob_socket(sock);
michael@0: 	if (connect(sock, (struct sockaddr*)&sin, sizeof(sin)) < 0) {
michael@0: 		int e = errno;
michael@0: 		if (! EVUTIL_ERR_CONNECT_RETRIABLE(e)) {
michael@0: 			return -1;
michael@0: 		}
michael@0: 	}
michael@0: 
michael@0: 	ri = malloc(sizeof(*ri));
michael@0: 	ri->n_read = 0;
michael@0: 	evutil_gettimeofday(&ri->started, NULL);
michael@0: 
michael@0: 	b = bufferevent_socket_new(base, sock, BEV_OPT_CLOSE_ON_FREE);
michael@0: 
michael@0: 	bufferevent_setcb(b, readcb, NULL, errorcb, ri);
michael@0: 	bufferevent_enable(b, EV_READ|EV_WRITE);
michael@0: 
michael@0: 	evbuffer_add_printf(bufferevent_get_output(b),
michael@0: 	    "GET %s HTTP/1.0\r\n\r\n", resource);
michael@0: 
michael@0: 	return 0;
michael@0: }
michael@0: 
michael@0: 
michael@0: int
michael@0: main(int argc, char **argv)
michael@0: {
michael@0: 	int i;
michael@0: 	struct timeval start, end, total;
michael@0: 	long long usec;
michael@0: 	double throughput;
michael@0: 	resource = "/ref";
michael@0: 
michael@0: 	setvbuf(stdout, NULL, _IONBF, 0);
michael@0: 
michael@0: 	base = event_base_new();
michael@0: 
michael@0: 	for (i=0; i < PARALLELISM; ++i) {
michael@0: 		if (launch_request() < 0)
michael@0: 			perror("launch");
michael@0: 	}
michael@0: 
michael@0: 	evutil_gettimeofday(&start, NULL);
michael@0: 
michael@0: 	event_base_dispatch(base);
michael@0: 
michael@0: 	evutil_gettimeofday(&end, NULL);
michael@0: 	evutil_timersub(&end, &start, &total);
michael@0: 	usec = total_time.tv_sec * 1000000 + total_time.tv_usec;
michael@0: 
michael@0: 	if (!total_n_handled) {
michael@0: 		puts("Nothing worked.  You probably did something dumb.");
michael@0: 		return 0;
michael@0: 	}
michael@0: 
michael@0: 
michael@0: 	throughput = total_n_handled /
michael@0: 	    (total.tv_sec+ ((double)total.tv_usec)/1000000.0);
michael@0: 
michael@0: #ifdef WIN32
michael@0: #define I64_FMT "%I64d"
michael@0: #define I64_TYP __int64
michael@0: #else
michael@0: #define I64_FMT "%lld"
michael@0: #define I64_TYP long long int
michael@0: #endif
michael@0: 
michael@0: 	printf("\n%d requests in %d.%06d sec. (%.2f throughput)\n"
michael@0: 	    "Each took about %.02f msec latency\n"
michael@0: 	    I64_FMT "bytes read. %d errors.\n",
michael@0: 	    total_n_handled,
michael@0: 	    (int)total.tv_sec, (int)total.tv_usec,
michael@0: 	    throughput,
michael@0: 	    (double)(usec/1000) / total_n_handled,
michael@0: 	    (I64_TYP)total_n_bytes, n_errors);
michael@0: 
michael@0: 	return 0;
michael@0: }