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6e834397f27663d1f66772000aed95c3e197cf65
apache-http-server/support/ab.c
Roy T. Fielding 6e834397f2 Overhaul ab.c stats collection and reporting to avoid integer 
truncation and time divisions within the test loop, retain
native time resolution until output, remove unused data,
avoid structure copies, consistently round milliseconds, and
generally avoid losing accuracy of calculation due to type casts.

Incidentally fixes output bug on gnuplot (seconds were being
output as microseconds).  It would make more sense to output
gnuplot stats as microseconds after the start of test, but
this change returns us to consistency with pre-apr versions of ab.

PR: 44878, 44931.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@655214 13f79535-47bb-0310-9956-ffa450edef68
2008-05-11 00:36:27 +00:00

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/* 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.
*/
/*
** This program is based on ZeusBench V1.0 written by Adam Twiss
** which is Copyright (c) 1996 by Zeus Technology Ltd. http://www.zeustech.net/
**
** This software is provided "as is" and any express or implied waranties,
** including but not limited to, the implied warranties of merchantability and
** fitness for a particular purpose are disclaimed. In no event shall
** Zeus Technology Ltd. be liable for any direct, indirect, incidental, special,
** exemplary, or consequential damaged (including, but not limited to,
** procurement of substitute good or services; loss of use, data, or profits;
** or business interruption) however caused and on 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.
**
*/
/*
** HISTORY:
** - Originally written by Adam Twiss <adam@zeus.co.uk>, March 1996
** with input from Mike Belshe <mbelshe@netscape.com> and
** Michael Campanella <campanella@stevms.enet.dec.com>
** - Enhanced by Dean Gaudet <dgaudet@apache.org>, November 1997
** - Cleaned up by Ralf S. Engelschall <rse@apache.org>, March 1998
** - POST and verbosity by Kurt Sussman <kls@merlot.com>, August 1998
** - HTML table output added by David N. Welton <davidw@prosa.it>, January 1999
** - Added Cookie, Arbitrary header and auth support. <dirkx@webweaving.org>, April 1999
** Version 1.3d
** - Increased version number - as some of the socket/error handling has
** fundamentally changed - and will give fundamentally different results
** in situations where a server is dropping requests. Therefore you can
** no longer compare results of AB as easily. Hence the inc of the version.
** They should be closer to the truth though. Sander & <dirkx@covalent.net>, End 2000.
** - Fixed proxy functionality, added median/mean statistics, added gnuplot
** output option, added _experimental/rudimentary_ SSL support. Added
** confidence guestimators and warnings. Sander & <dirkx@covalent.net>, End 2000
** - Fixed serious int overflow issues which would cause realistic (longer
** than a few minutes) run's to have wrong (but believable) results. Added
** trapping of connection errors which influenced measurements.
** Contributed by Sander Temme, Early 2001
** Version 1.3e
** - Changed timeout behavour during write to work whilst the sockets
** are filling up and apr_write() does writes a few - but not all.
** This will potentially change results. <dirkx@webweaving.org>, April 2001
** Version 2.0.36-dev
** Improvements to concurrent processing:
** - Enabled non-blocking connect()s.
** - Prevent blocking calls to apr_socket_recv() (thereby allowing AB to
** manage its entire set of socket descriptors).
** - Any error returned from apr_socket_recv() that is not EAGAIN or EOF
** is now treated as fatal.
** Contributed by Aaron Bannert, April 24, 2002
**
** Version 2.0.36-2
** Internalized the version string - this string is part
** of the Agent: header and the result output.
**
** Version 2.0.37-dev
** Adopted SSL code by Madhu Mathihalli <madhusudan_mathihalli@hp.com>
** [PATCH] ab with SSL support Posted Wed, 15 Aug 2001 20:55:06 GMT
** Introduces four 'if (int == value)' tests per non-ssl request.
**
** Version 2.0.40-dev
** Switched to the new abstract pollset API, allowing ab to
** take advantage of future apr_pollset_t scalability improvements.
** Contributed by Brian Pane, August 31, 2002
**
** Version 2.3
** SIGINT now triggers output_results().
** Contributed by colm, March 30, 2006
**/
/* Note: this version string should start with \d+[\d\.]* and be a valid
* string for an HTTP Agent: header when prefixed with 'ApacheBench/'.
* It should reflect the version of AB - and not that of the apache server
* it happens to accompany. And it should be updated or changed whenever
* the results are no longer fundamentally comparable to the results of
* a previous version of ab. Either due to a change in the logic of
* ab - or to due to a change in the distribution it is compiled with
* (such as an APR change in for example blocking).
*/
#define AP_AB_BASEREVISION "2.3"
/*
* BUGS:
*
* - uses strcpy/etc.
* - has various other poor buffer attacks related to the lazy parsing of
* response headers from the server
* - doesn't implement much of HTTP/1.x, only accepts certain forms of
* responses
* - (performance problem) heavy use of strstr shows up top in profile
* only an issue for loopback usage
*/
/* -------------------------------------------------------------------- */
#if 'A' != 0x41
/* Hmmm... This source code isn't being compiled in ASCII.
* In order for data that flows over the network to make
* sense, we need to translate to/from ASCII.
*/
#define NOT_ASCII
#endif
/* affects include files on Solaris */
#define BSD_COMP
#include "apr.h"
#include "apr_signal.h"
#include "apr_strings.h"
#include "apr_network_io.h"
#include "apr_file_io.h"
#include "apr_time.h"
#include "apr_getopt.h"
#include "apr_general.h"
#include "apr_lib.h"
#include "apr_portable.h"
#include "ap_release.h"
#include "apr_poll.h"
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "apr_base64.h"
#ifdef NOT_ASCII
#include "apr_xlate.h"
#endif
#if APR_HAVE_STDIO_H
#include <stdio.h>
#endif
#if APR_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h> /* for getpid() */
#endif
#if !defined(WIN32) && !defined(NETWARE)
#include "ap_config_auto.h"
#endif
#if defined(HAVE_SSLC)
/* Libraries for RSA SSL-C */
#include <rsa.h>
#include <x509.h>
#include <pem.h>
#include <err.h>
#include <ssl.h>
#include <r_rand.h>
#include <sslc.h>
#define USE_SSL
#define RSAREF
#define SK_NUM(x) sk_num(x)
#define SK_VALUE(x,y) sk_value(x,y)
typedef STACK X509_STACK_TYPE;
#elif defined(HAVE_OPENSSL)
/* Libraries on most systems.. */
#include <openssl/rsa.h>
#include <openssl/crypto.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <openssl/rand.h>
#define USE_SSL
#define SK_NUM(x) sk_X509_num(x)
#define SK_VALUE(x,y) sk_X509_value(x,y)
typedef STACK_OF(X509) X509_STACK_TYPE;
#endif
#include <math.h>
#if APR_HAVE_CTYPE_H
#include <ctype.h>
#endif
/* ------------------- DEFINITIONS -------------------------- */
#ifndef LLONG_MAX
#define AB_MAX APR_INT64_C(0x7fffffffffffffff)
#else
#define AB_MAX LLONG_MAX
#endif
/* maximum number of requests on a time limited test */
#define MAX_REQUESTS (INT_MAX > 50000 ? 50000 : INT_MAX)
/* good old state hostname */
#define STATE_UNCONNECTED 0
#define STATE_CONNECTING 1 /* TCP connect initiated, but we don't
* know if it worked yet
*/
#define STATE_CONNECTED 2 /* we know TCP connect completed */
#define STATE_READ 3
#define CBUFFSIZE (2048)
struct connection {
apr_pool_t *ctx;
apr_socket_t *aprsock;
int state;
apr_size_t read; /* amount of bytes read */
apr_size_t bread; /* amount of body read */
apr_size_t rwrite, rwrote; /* keep pointers in what we write - across
* EAGAINs */
apr_size_t length; /* Content-Length value used for keep-alive */
char cbuff[CBUFFSIZE]; /* a buffer to store server response header */
int cbx; /* offset in cbuffer */
int keepalive; /* non-zero if a keep-alive request */
int gotheader; /* non-zero if we have the entire header in
* cbuff */
apr_time_t start, /* Start of connection */
connect, /* Connected, start writing */
endwrite, /* Request written */
beginread, /* First byte of input */
done; /* Connection closed */
int socknum;
#ifdef USE_SSL
SSL *ssl;
#endif
};
struct data {
apr_time_t starttime; /* start time of connection */
apr_interval_time_t waittime; /* between request and reading response */
apr_interval_time_t ctime; /* time to connect */
apr_interval_time_t time; /* time for connection */
};
#define ap_min(a,b) ((a)<(b))?(a):(b)
#define ap_max(a,b) ((a)>(b))?(a):(b)
#define ap_round_ms(a) ((apr_time_t)((a) + 500)/1000)
#define ap_double_ms(a) ((double)(a)/1000.0)
#define MAX_CONCURRENCY 20000
/* --------------------- GLOBALS ---------------------------- */
int verbosity = 0; /* no verbosity by default */
int recverrok = 0; /* ok to proceed after socket receive errors */
int posting = 0; /* GET by default */
int requests = 1; /* Number of requests to make */
int heartbeatres = 100; /* How often do we say we're alive */
int concurrency = 1; /* Number of multiple requests to make */
int percentile = 1; /* Show percentile served */
int confidence = 1; /* Show confidence estimator and warnings */
int tlimit = 0; /* time limit in secs */
int keepalive = 0; /* try and do keepalive connections */
int windowsize = 0; /* we use the OS default window size */
char servername[1024]; /* name that server reports */
char *hostname; /* host name from URL */
char *host_field; /* value of "Host:" header field */
char *path; /* path name */
char postfile[1024]; /* name of file containing post data */
char *postdata; /* *buffer containing data from postfile */
apr_size_t postlen = 0; /* length of data to be POSTed */
char content_type[1024];/* content type to put in POST header */
char *cookie, /* optional cookie line */
*auth, /* optional (basic/uuencoded) auhentication */
*hdrs; /* optional arbitrary headers */
apr_port_t port; /* port number */
char proxyhost[1024]; /* proxy host name */
int proxyport = 0; /* proxy port */
char *connecthost;
apr_port_t connectport;
char *gnuplot; /* GNUplot file */
char *csvperc; /* CSV Percentile file */
char url[1024];
char * fullurl, * colonhost;
int isproxy = 0;
apr_interval_time_t aprtimeout = apr_time_from_sec(30); /* timeout value */
/* overrides for ab-generated common headers */
int opt_host = 0; /* was an optional "Host:" header specified? */
int opt_useragent = 0; /* was an optional "User-Agent:" header specified? */
int opt_accept = 0; /* was an optional "Accept:" header specified? */
/*
* XXX - this is now a per read/write transact type of value
*/
int use_html = 0; /* use html in the report */
const char *tablestring;
const char *trstring;
const char *tdstring;
apr_size_t doclen = 0; /* the length the document should be */
apr_int64_t totalread = 0; /* total number of bytes read */
apr_int64_t totalbread = 0; /* totoal amount of entity body read */
apr_int64_t totalposted = 0; /* total number of bytes posted, inc. headers */
int started = 0; /* number of requests started, so no excess */
int done = 0; /* number of requests we have done */
int doneka = 0; /* number of keep alive connections done */
int good = 0, bad = 0; /* number of good and bad requests */
int epipe = 0; /* number of broken pipe writes */
int err_length = 0; /* requests failed due to response length */
int err_conn = 0; /* requests failed due to connection drop */
int err_recv = 0; /* requests failed due to broken read */
int err_except = 0; /* requests failed due to exception */
int err_response = 0; /* requests with invalid or non-200 response */
#ifdef USE_SSL
int is_ssl;
SSL_CTX *ssl_ctx;
char *ssl_cipher = NULL;
char *ssl_info = NULL;
BIO *bio_out,*bio_err;
#endif
apr_time_t start, lasttime, stoptime;
/* global request (and its length) */
char _request[2048];
char *request = _request;
apr_size_t reqlen;
/* one global throw-away buffer to read stuff into */
char buffer[8192];
/* interesting percentiles */
int percs[] = {50, 66, 75, 80, 90, 95, 98, 99, 100};
struct connection *con; /* connection array */
struct data *stats; /* data for each request */
apr_pool_t *cntxt;
apr_pollset_t *readbits;
apr_sockaddr_t *destsa;
#ifdef NOT_ASCII
apr_xlate_t *from_ascii, *to_ascii;
#endif
static void write_request(struct connection * c);
static void close_connection(struct connection * c);
/* --------------------------------------------------------- */
/* simple little function to write an error string and exit */
static void err(char *s)
{
fprintf(stderr, "%s\n", s);
if (done)
printf("Total of %d requests completed\n" , done);
exit(1);
}
/* simple little function to write an APR error string and exit */
static void apr_err(char *s, apr_status_t rv)
{
char buf[120];
fprintf(stderr,
"%s: %s (%d)\n",
s, apr_strerror(rv, buf, sizeof buf), rv);
if (done)
printf("Total of %d requests completed\n" , done);
exit(rv);
}
/* --------------------------------------------------------- */
/* write out request to a connection - assumes we can write
* (small) request out in one go into our new socket buffer
*
*/
#ifdef USE_SSL
static long ssl_print_cb(BIO *bio,int cmd,const char *argp,int argi,long argl,long ret)
{
BIO *out;
out=(BIO *)BIO_get_callback_arg(bio);
if (out == NULL) return(ret);
if (cmd == (BIO_CB_READ|BIO_CB_RETURN)) {
BIO_printf(out,"read from %p [%p] (%d bytes => %ld (0x%lX))\n",
bio, argp, argi, ret, ret);
BIO_dump(out,(char *)argp,(int)ret);
return(ret);
}
else if (cmd == (BIO_CB_WRITE|BIO_CB_RETURN)) {
BIO_printf(out,"write to %p [%p] (%d bytes => %ld (0x%lX))\n",
bio, argp, argi, ret, ret);
BIO_dump(out,(char *)argp,(int)ret);
}
return ret;
}
static void ssl_state_cb(const SSL *s, int w, int r)
{
if (w & SSL_CB_ALERT) {
BIO_printf(bio_err, "SSL/TLS Alert [%s] %s:%s\n",
(w & SSL_CB_READ ? "read" : "write"),
SSL_alert_type_string_long(r),
SSL_alert_desc_string_long(r));
} else if (w & SSL_CB_LOOP) {
BIO_printf(bio_err, "SSL/TLS State [%s] %s\n",
(SSL_in_connect_init((SSL*)s) ? "connect" : "-"),
SSL_state_string_long(s));
} else if (w & (SSL_CB_HANDSHAKE_START|SSL_CB_HANDSHAKE_DONE)) {
BIO_printf(bio_err, "SSL/TLS Handshake [%s] %s\n",
(w & SSL_CB_HANDSHAKE_START ? "Start" : "Done"),
SSL_state_string_long(s));
}
}
#ifndef RAND_MAX
#include <limits.h>
#define RAND_MAX INT_MAX
#endif
static int ssl_rand_choosenum(int l, int h)
{
int i;
char buf[50];
srand((unsigned int)time(NULL));
apr_snprintf(buf, sizeof(buf), "%.0f",
(((double)(rand()%RAND_MAX)/RAND_MAX)*(h-l)));
i = atoi(buf)+1;
if (i < l) i = l;
if (i > h) i = h;
return i;
}
static void ssl_rand_seed(void)
{
int nDone = 0;
int n, l;
time_t t;
pid_t pid;
unsigned char stackdata[256];
/*
* seed in the current time (usually just 4 bytes)
*/
t = time(NULL);
l = sizeof(time_t);
RAND_seed((unsigned char *)&t, l);
nDone += l;
/*
* seed in the current process id (usually just 4 bytes)
*/
pid = getpid();
l = sizeof(pid_t);
RAND_seed((unsigned char *)&pid, l);
nDone += l;
/*
* seed in some current state of the run-time stack (128 bytes)
*/
n = ssl_rand_choosenum(0, sizeof(stackdata)-128-1);
RAND_seed(stackdata+n, 128);
nDone += 128;
}
static int ssl_print_connection_info(BIO *bio, SSL *ssl)
{
SSL_CIPHER *c;
int alg_bits,bits;
c = SSL_get_current_cipher(ssl);
BIO_printf(bio,"Cipher Suite Protocol :%s\n", SSL_CIPHER_get_version(c));
BIO_printf(bio,"Cipher Suite Name :%s\n",SSL_CIPHER_get_name(c));
bits = SSL_CIPHER_get_bits(c,&alg_bits);
BIO_printf(bio,"Cipher Suite Cipher Bits:%d (%d)\n",bits,alg_bits);
return(1);
}
static void ssl_print_cert_info(BIO *bio, X509 *cert)
{
X509_NAME *dn;
char buf[1024];
BIO_printf(bio, "Certificate version: %ld\n", X509_get_version(cert)+1);
BIO_printf(bio,"Valid from: ");
ASN1_UTCTIME_print(bio, X509_get_notBefore(cert));
BIO_printf(bio,"\n");
BIO_printf(bio,"Valid to : ");
ASN1_UTCTIME_print(bio, X509_get_notAfter(cert));
BIO_printf(bio,"\n");
BIO_printf(bio,"Public key is %d bits\n",
EVP_PKEY_bits(X509_get_pubkey(cert)));
dn = X509_get_issuer_name(cert);
X509_NAME_oneline(dn, buf, sizeof(buf));
BIO_printf(bio,"The issuer name is %s\n", buf);
dn=X509_get_subject_name(cert);
X509_NAME_oneline(dn, buf, sizeof(buf));
BIO_printf(bio,"The subject name is %s\n", buf);
/* dump the extension list too */
BIO_printf(bio, "Extension Count: %d\n", X509_get_ext_count(cert));
}
static void ssl_print_info(struct connection *c)
{
X509_STACK_TYPE *sk;
X509 *cert;
int count;
BIO_printf(bio_err, "\n");
sk = SSL_get_peer_cert_chain(c->ssl);
if ((count = SK_NUM(sk)) > 0) {
int i;
for (i=1; i<count; i++) {
cert = (X509 *)SK_VALUE(sk, i);
ssl_print_cert_info(bio_out, cert);
X509_free(cert);
}
}
cert = SSL_get_peer_certificate(c->ssl);
if (cert == NULL) {
BIO_printf(bio_out, "Anon DH\n");
} else {
BIO_printf(bio_out, "Peer certificate\n");
ssl_print_cert_info(bio_out, cert);
X509_free(cert);
}
ssl_print_connection_info(bio_err,c->ssl);
SSL_SESSION_print(bio_err, SSL_get_session(c->ssl));
}
static void ssl_proceed_handshake(struct connection *c)
{
int do_next = 1;
while (do_next) {
int ret, ecode;
apr_pollfd_t new_pollfd;
ret = SSL_do_handshake(c->ssl);
ecode = SSL_get_error(c->ssl, ret);
switch (ecode) {
case SSL_ERROR_NONE:
if (verbosity >= 2)
ssl_print_info(c);
if (ssl_info == NULL) {
SSL_CIPHER *ci;
X509 *cert;
int sk_bits, pk_bits, swork;
ci = SSL_get_current_cipher(c->ssl);
sk_bits = SSL_CIPHER_get_bits(ci, &swork);
cert = SSL_get_peer_certificate(c->ssl);
if (cert)
pk_bits = EVP_PKEY_bits(X509_get_pubkey(cert));
else
pk_bits = 0; /* Anon DH */
ssl_info = malloc(128);
apr_snprintf(ssl_info, 128, "%s,%s,%d,%d",
SSL_CIPHER_get_version(ci),
SSL_CIPHER_get_name(ci),
pk_bits, sk_bits);
}
write_request(c);
do_next = 0;
break;
case SSL_ERROR_WANT_READ:
new_pollfd.desc_type = APR_POLL_SOCKET;
new_pollfd.reqevents = APR_POLLIN;
new_pollfd.desc.s = c->aprsock;
new_pollfd.client_data = c;
apr_pollset_add(readbits, &new_pollfd);
do_next = 0;
break;
case SSL_ERROR_WANT_WRITE:
/* Try again */
do_next = 1;
break;
case SSL_ERROR_WANT_CONNECT:
case SSL_ERROR_SSL:
case SSL_ERROR_SYSCALL:
/* Unexpected result */
BIO_printf(bio_err, "SSL handshake failed (%d).\n", ecode);
ERR_print_errors(bio_err);
close_connection(c);
do_next = 0;
break;
}
}
}
#endif /* USE_SSL */
static void write_request(struct connection * c)
{
do {
apr_time_t tnow;
apr_size_t l = c->rwrite;
apr_status_t e = APR_SUCCESS; /* prevent gcc warning */
tnow = lasttime = apr_time_now();
/*
* First time round ?
*/
if (c->rwrite == 0) {
apr_socket_timeout_set(c->aprsock, 0);
c->connect = tnow;
c->rwrite = reqlen;
c->rwrote = 0;
if (posting)
c->rwrite += postlen;
}
else if (tnow > c->connect + aprtimeout) {
printf("Send request timed out!\n");
close_connection(c);
return;
}
#ifdef USE_SSL
if (c->ssl) {
apr_size_t e_ssl;
e_ssl = SSL_write(c->ssl,request + c->rwrote, l);
if (e_ssl != l) {
BIO_printf(bio_err, "SSL write failed - closing connection\n");
ERR_print_errors(bio_err);
close_connection (c);
return;
}
l = e_ssl;
e = APR_SUCCESS;
}
else
#endif
e = apr_socket_send(c->aprsock, request + c->rwrote, &l);
/*
* Bail early on the most common case
*/
if (l == c->rwrite)
break;
if (e != APR_SUCCESS) {
/*
* Let's hope this traps EWOULDBLOCK too !
*/
if (!APR_STATUS_IS_EAGAIN(e)) {
epipe++;
printf("Send request failed!\n");
close_connection(c);
}
return;
}
c->rwrote += l;
c->rwrite -= l;
} while (1);
totalposted += c->rwrite;
c->state = STATE_READ;
c->endwrite = lasttime = apr_time_now();
{
apr_pollfd_t new_pollfd;
new_pollfd.desc_type = APR_POLL_SOCKET;
new_pollfd.reqevents = APR_POLLIN;
new_pollfd.desc.s = c->aprsock;
new_pollfd.client_data = c;
apr_pollset_add(readbits, &new_pollfd);
}
}
/* --------------------------------------------------------- */
/* calculate and output results */
static int compradre(struct data * a, struct data * b)
{
if ((a->ctime) < (b->ctime))
return -1;
if ((a->ctime) > (b->ctime))
return +1;
return 0;
}
static int comprando(struct data * a, struct data * b)
{
if ((a->time) < (b->time))
return -1;
if ((a->time) > (b->time))
return +1;
return 0;
}
static int compri(struct data * a, struct data * b)
{
apr_interval_time_t p = a->time - a->ctime;
apr_interval_time_t q = b->time - b->ctime;
if (p < q)
return -1;
if (p > q)
return +1;
return 0;
}
static int compwait(struct data * a, struct data * b)
{
if ((a->waittime) < (b->waittime))
return -1;
if ((a->waittime) > (b->waittime))
return 1;
return 0;
}
static void output_results(int sig)
{
double timetaken;
if (sig) {
lasttime = apr_time_now(); /* record final time if interrupted */
}
timetaken = (double) (lasttime - start) / APR_USEC_PER_SEC;
printf("\n\n");
printf("Server Software: %s\n", servername);
printf("Server Hostname: %s\n", hostname);
printf("Server Port: %hu\n", port);
#ifdef USE_SSL
if (is_ssl && ssl_info) {
printf("SSL/TLS Protocol: %s\n", ssl_info);
}
#endif
printf("\n");
printf("Document Path: %s\n", path);
printf("Document Length: %" APR_SIZE_T_FMT " bytes\n", doclen);
printf("\n");
printf("Concurrency Level: %d\n", concurrency);
printf("Time taken for tests: %.3f seconds\n", timetaken);
printf("Complete requests: %d\n", done);
printf("Failed requests: %d\n", bad);
if (bad)
printf(" (Connect: %d, Receive: %d, Length: %d, Exceptions: %d)\n",
err_conn, err_recv, err_length, err_except);
printf("Write errors: %d\n", epipe);
if (err_response)
printf("Non-2xx responses: %d\n", err_response);
if (keepalive)
printf("Keep-Alive requests: %d\n", doneka);
printf("Total transferred: %" APR_INT64_T_FMT " bytes\n", totalread);
if (posting > 0)
printf("Total POSTed: %" APR_INT64_T_FMT "\n", totalposted);
printf("HTML transferred: %" APR_INT64_T_FMT " bytes\n", totalbread);
/* avoid divide by zero */
if (timetaken && done) {
printf("Requests per second: %.2f [#/sec] (mean)\n",
(double) done / timetaken);
printf("Time per request: %.3f [ms] (mean)\n",
(double) concurrency * timetaken * 1000 / done);
printf("Time per request: %.3f [ms] (mean, across all concurrent requests)\n",
(double) timetaken * 1000 / done);
printf("Transfer rate: %.2f [Kbytes/sec] received\n",
(double) totalread / 1024 / timetaken);
if (posting > 0) {
printf(" %.2f kb/s sent\n",
(double) totalposted / timetaken / 1024);
printf(" %.2f kb/s total\n",
(double) (totalread + totalposted) / timetaken / 1024);
}
}
if (done > 0) {
/* work out connection times */
int i;
apr_time_t totalcon = 0, total = 0, totald = 0, totalwait = 0;
apr_time_t meancon, meantot, meand, meanwait;
apr_interval_time_t mincon = AB_MAX, mintot = AB_MAX, mind = AB_MAX,
minwait = AB_MAX;
apr_interval_time_t maxcon = 0, maxtot = 0, maxd = 0, maxwait = 0;
apr_interval_time_t mediancon = 0, mediantot = 0, mediand = 0, medianwait = 0;
double sdtot = 0, sdcon = 0, sdd = 0, sdwait = 0;
for (i = 0; i < done; i++) {
struct data *s = &stats[i];
mincon = ap_min(mincon, s->ctime);
mintot = ap_min(mintot, s->time);
mind = ap_min(mind, s->time - s->ctime);
minwait = ap_min(minwait, s->waittime);
maxcon = ap_max(maxcon, s->ctime);
maxtot = ap_max(maxtot, s->time);
maxd = ap_max(maxd, s->time - s->ctime);
maxwait = ap_max(maxwait, s->waittime);
totalcon += s->ctime;
total += s->time;
totald += s->time - s->ctime;
totalwait += s->waittime;
}
meancon = totalcon / done;
meantot = total / done;
meand = totald / done;
meanwait = totalwait / done;
/* calculating the sample variance: the sum of the squared deviations, divided by n-1 */
for (i = 0; i < done; i++) {
struct data *s = &stats[i];
double a;
a = ((double)s->time - meantot);
sdtot += a * a;
a = ((double)s->ctime - meancon);
sdcon += a * a;
a = ((double)s->time - (double)s->ctime - meand);
sdd += a * a;
a = ((double)s->waittime - meanwait);
sdwait += a * a;
}
sdtot = (done > 1) ? sqrt(sdtot / (done - 1)) : 0;
sdcon = (done > 1) ? sqrt(sdcon / (done - 1)) : 0;
sdd = (done > 1) ? sqrt(sdd / (done - 1)) : 0;
sdwait = (done > 1) ? sqrt(sdwait / (done - 1)) : 0;
/*
* XXX: what is better; this hideous cast of the compradre function; or
* the four warnings during compile ? dirkx just does not know and
* hates both/
*/
qsort(stats, done, sizeof(struct data),
(int (*) (const void *, const void *)) compradre);
if ((done > 1) && (done % 2))
mediancon = (stats[done / 2].ctime + stats[done / 2 + 1].ctime) / 2;
else
mediancon = stats[done / 2].ctime;
qsort(stats, done, sizeof(struct data),
(int (*) (const void *, const void *)) compri);
if ((done > 1) && (done % 2))
mediand = (stats[done / 2].time + stats[done / 2 + 1].time \
-stats[done / 2].ctime - stats[done / 2 + 1].ctime) / 2;
else
mediand = stats[done / 2].time - stats[done / 2].ctime;
qsort(stats, done, sizeof(struct data),
(int (*) (const void *, const void *)) compwait);
if ((done > 1) && (done % 2))
medianwait = (stats[done / 2].waittime + stats[done / 2 + 1].waittime) / 2;
else
medianwait = stats[done / 2].waittime;
qsort(stats, done, sizeof(struct data),
(int (*) (const void *, const void *)) comprando);
if ((done > 1) && (done % 2))
mediantot = (stats[done / 2].time + stats[done / 2 + 1].time) / 2;
else
mediantot = stats[done / 2].time;
printf("\nConnection Times (ms)\n");
/*
* Reduce stats from apr time to milliseconds
*/
mincon = ap_round_ms(mincon);
mind = ap_round_ms(mind);
minwait = ap_round_ms(minwait);
mintot = ap_round_ms(mintot);
meancon = ap_round_ms(meancon);
meand = ap_round_ms(meand);
meanwait = ap_round_ms(meanwait);
meantot = ap_round_ms(meantot);
mediancon = ap_round_ms(mediancon);
mediand = ap_round_ms(mediand);
medianwait = ap_round_ms(medianwait);
mediantot = ap_round_ms(mediantot);
maxcon = ap_round_ms(maxcon);
maxd = ap_round_ms(maxd);
maxwait = ap_round_ms(maxwait);
maxtot = ap_round_ms(maxtot);
sdcon = ap_double_ms(sdcon);
sdd = ap_double_ms(sdd);
sdwait = ap_double_ms(sdwait);
sdtot = ap_double_ms(sdtot);
if (confidence) {
#define CONF_FMT_STRING "%5" APR_TIME_T_FMT " %4" APR_TIME_T_FMT " %5.1f %6" APR_TIME_T_FMT " %7" APR_TIME_T_FMT "\n"
printf(" min mean[+/-sd] median max\n");
printf("Connect: " CONF_FMT_STRING,
mincon, meancon, sdcon, mediancon, maxcon);
printf("Processing: " CONF_FMT_STRING,
mind, meand, sdd, mediand, maxd);
printf("Waiting: " CONF_FMT_STRING,
minwait, meanwait, sdwait, medianwait, maxwait);
printf("Total: " CONF_FMT_STRING,
mintot, meantot, sdtot, mediantot, maxtot);
#undef CONF_FMT_STRING
#define SANE(what,mean,median,sd) \
{ \
double d = (double)mean - median; \
if (d < 0) d = -d; \
if (d > 2 * sd ) \
printf("ERROR: The median and mean for " what " are more than twice the standard\n" \
" deviation apart. These results are NOT reliable.\n"); \
else if (d > sd ) \
printf("WARNING: The median and mean for " what " are not within a normal deviation\n" \
" These results are probably not that reliable.\n"); \
}
SANE("the initial connection time", meancon, mediancon, sdcon);
SANE("the processing time", meand, mediand, sdd);
SANE("the waiting time", meanwait, medianwait, sdwait);
SANE("the total time", meantot, mediantot, sdtot);
}
else {
printf(" min avg max\n");
#define CONF_FMT_STRING "%5" APR_TIME_T_FMT " %5" APR_TIME_T_FMT "%5" APR_TIME_T_FMT "\n"
printf("Connect: " CONF_FMT_STRING, mincon, meancon, maxcon);
printf("Processing: " CONF_FMT_STRING, mintot - mincon,
meantot - meancon,
maxtot - maxcon);
printf("Total: " CONF_FMT_STRING, mintot, meantot, maxtot);
#undef CONF_FMT_STRING
}
/* Sorted on total connect times */
if (percentile && (done > 1)) {
printf("\nPercentage of the requests served within a certain time (ms)\n");
for (i = 0; i < sizeof(percs) / sizeof(int); i++) {
if (percs[i] <= 0)
printf(" 0%% <0> (never)\n");
else if (percs[i] >= 100)
printf(" 100%% %5" APR_TIME_T_FMT " (longest request)\n",
ap_round_ms(stats[done - 1].time));
else
printf(" %d%% %5" APR_TIME_T_FMT "\n", percs[i],
ap_round_ms(stats[(int) (done * percs[i] / 100)].time));
}
}
if (csvperc) {
FILE *out = fopen(csvperc, "w");
if (!out) {
perror("Cannot open CSV output file");
exit(1);
}
fprintf(out, "" "Percentage served" "," "Time in ms" "\n");
for (i = 0; i < 100; i++) {
double t;
if (i == 0)
t = ap_double_ms(stats[0].time);
else if (i == 100)
t = ap_double_ms(stats[done - 1].time);
else
t = ap_double_ms(stats[(int) (0.5 + done * i / 100.0)].time);
fprintf(out, "%d,%.3f\n", i, t);
}
fclose(out);
}
if (gnuplot) {
FILE *out = fopen(gnuplot, "w");
char tmstring[APR_CTIME_LEN];
if (!out) {
perror("Cannot open gnuplot output file");
exit(1);
}
fprintf(out, "starttime\tseconds\tctime\tdtime\tttime\twait\n");
for (i = 0; i < done; i++) {
(void) apr_ctime(tmstring, stats[i].starttime);
fprintf(out, "%s\t%" APR_TIME_T_FMT "\t%" APR_TIME_T_FMT
"\t%" APR_TIME_T_FMT "\t%" APR_TIME_T_FMT
"\t%" APR_TIME_T_FMT "\n", tmstring,
apr_time_sec(stats[i].starttime),
ap_round_ms(stats[i].ctime),
ap_round_ms(stats[i].time - stats[i].ctime),
ap_round_ms(stats[i].time),
ap_round_ms(stats[i].waittime));
}
fclose(out);
}
}
if (sig) {
exit(1);
}
}
/* --------------------------------------------------------- */
/* calculate and output results in HTML */
static void output_html_results(void)
{
double timetaken = (double) (lasttime - start) / APR_USEC_PER_SEC;
printf("\n\n<table %s>\n", tablestring);
printf("<tr %s><th colspan=2 %s>Server Software:</th>"
"<td colspan=2 %s>%s</td></tr>\n",
trstring, tdstring, tdstring, servername);
printf("<tr %s><th colspan=2 %s>Server Hostname:</th>"
"<td colspan=2 %s>%s</td></tr>\n",
trstring, tdstring, tdstring, hostname);
printf("<tr %s><th colspan=2 %s>Server Port:</th>"
"<td colspan=2 %s>%hu</td></tr>\n",
trstring, tdstring, tdstring, port);
printf("<tr %s><th colspan=2 %s>Document Path:</th>"
"<td colspan=2 %s>%s</td></tr>\n",
trstring, tdstring, tdstring, path);
printf("<tr %s><th colspan=2 %s>Document Length:</th>"
"<td colspan=2 %s>%" APR_SIZE_T_FMT " bytes</td></tr>\n",
trstring, tdstring, tdstring, doclen);
printf("<tr %s><th colspan=2 %s>Concurrency Level:</th>"
"<td colspan=2 %s>%d</td></tr>\n",
trstring, tdstring, tdstring, concurrency);
printf("<tr %s><th colspan=2 %s>Time taken for tests:</th>"
"<td colspan=2 %s>%.3f seconds</td></tr>\n",
trstring, tdstring, tdstring, timetaken);
printf("<tr %s><th colspan=2 %s>Complete requests:</th>"
"<td colspan=2 %s>%d</td></tr>\n",
trstring, tdstring, tdstring, done);
printf("<tr %s><th colspan=2 %s>Failed requests:</th>"
"<td colspan=2 %s>%d</td></tr>\n",
trstring, tdstring, tdstring, bad);
if (bad)
printf("<tr %s><td colspan=4 %s > (Connect: %d, Length: %d, Exceptions: %d)</td></tr>\n",
trstring, tdstring, err_conn, err_length, err_except);
if (err_response)
printf("<tr %s><th colspan=2 %s>Non-2xx responses:</th>"
"<td colspan=2 %s>%d</td></tr>\n",
trstring, tdstring, tdstring, err_response);
if (keepalive)
printf("<tr %s><th colspan=2 %s>Keep-Alive requests:</th>"
"<td colspan=2 %s>%d</td></tr>\n",
trstring, tdstring, tdstring, doneka);
printf("<tr %s><th colspan=2 %s>Total transferred:</th>"
"<td colspan=2 %s>%" APR_INT64_T_FMT " bytes</td></tr>\n",
trstring, tdstring, tdstring, totalread);
if (posting > 0)
printf("<tr %s><th colspan=2 %s>Total POSTed:</th>"
"<td colspan=2 %s>%" APR_INT64_T_FMT "</td></tr>\n",
trstring, tdstring, tdstring, totalposted);
printf("<tr %s><th colspan=2 %s>HTML transferred:</th>"
"<td colspan=2 %s>%" APR_INT64_T_FMT " bytes</td></tr>\n",
trstring, tdstring, tdstring, totalbread);
/* avoid divide by zero */
if (timetaken) {
printf("<tr %s><th colspan=2 %s>Requests per second:</th>"
"<td colspan=2 %s>%.2f</td></tr>\n",
trstring, tdstring, tdstring, (double) done * 1000 / timetaken);
printf("<tr %s><th colspan=2 %s>Transfer rate:</th>"
"<td colspan=2 %s>%.2f kb/s received</td></tr>\n",
trstring, tdstring, tdstring, (double) totalread / timetaken);
if (posting > 0) {
printf("<tr %s><td colspan=2 %s>&nbsp;</td>"
"<td colspan=2 %s>%.2f kb/s sent</td></tr>\n",
trstring, tdstring, tdstring,
(double) totalposted / timetaken);
printf("<tr %s><td colspan=2 %s>&nbsp;</td>"
"<td colspan=2 %s>%.2f kb/s total</td></tr>\n",
trstring, tdstring, tdstring,
(double) (totalread + totalposted) / timetaken);
}
}
{
/* work out connection times */
int i;
apr_interval_time_t totalcon = 0, total = 0;
apr_interval_time_t mincon = AB_MAX, mintot = AB_MAX;
apr_interval_time_t maxcon = 0, maxtot = 0;
for (i = 0; i < done; i++) {
struct data *s = &stats[i];
mincon = ap_min(mincon, s->ctime);
mintot = ap_min(mintot, s->time);
maxcon = ap_max(maxcon, s->ctime);
maxtot = ap_max(maxtot, s->time);
totalcon += s->ctime;
total += s->time;
}
/*
* Reduce stats from apr time to milliseconds
*/
mincon = ap_round_ms(mincon);
mintot = ap_round_ms(mintot);
maxcon = ap_round_ms(maxcon);
maxtot = ap_round_ms(maxtot);
totalcon = ap_round_ms(totalcon);
total = ap_round_ms(total);
if (done > 0) { /* avoid division by zero (if 0 done) */
printf("<tr %s><th %s colspan=4>Connnection Times (ms)</th></tr>\n",
trstring, tdstring);
printf("<tr %s><th %s>&nbsp;</th> <th %s>min</th> <th %s>avg</th> <th %s>max</th></tr>\n",
trstring, tdstring, tdstring, tdstring, tdstring);
printf("<tr %s><th %s>Connect:</th>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td></tr>\n",
trstring, tdstring, tdstring, mincon, tdstring, totalcon / done, tdstring, maxcon);
printf("<tr %s><th %s>Processing:</th>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td></tr>\n",
trstring, tdstring, tdstring, mintot - mincon, tdstring,
(total / done) - (totalcon / done), tdstring, maxtot - maxcon);
printf("<tr %s><th %s>Total:</th>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td>"
"<td %s>%5" APR_TIME_T_FMT "</td></tr>\n",
trstring, tdstring, tdstring, mintot, tdstring, total / done, tdstring, maxtot);
}
printf("</table>\n");
}
}
/* --------------------------------------------------------- */
/* start asnchronous non-blocking connection */
static void start_connect(struct connection * c)
{
apr_status_t rv;
if (!(started < requests))
return;
c->read = 0;
c->bread = 0;
c->keepalive = 0;
c->cbx = 0;
c->gotheader = 0;
c->rwrite = 0;
if (c->ctx)
apr_pool_destroy(c->ctx);
apr_pool_create(&c->ctx, cntxt);
if ((rv = apr_socket_create(&c->aprsock, destsa->family,
SOCK_STREAM, 0, c->ctx)) != APR_SUCCESS) {
apr_err("socket", rv);
}
if ((rv = apr_socket_opt_set(c->aprsock, APR_SO_NONBLOCK, 1))
!= APR_SUCCESS) {
apr_err("socket nonblock", rv);
}
if (windowsize != 0) {
rv = apr_socket_opt_set(c->aprsock, APR_SO_SNDBUF,
windowsize);
if (rv != APR_SUCCESS && rv != APR_ENOTIMPL) {
apr_err("socket send buffer", rv);
}
rv = apr_socket_opt_set(c->aprsock, APR_SO_RCVBUF,
windowsize);
if (rv != APR_SUCCESS && rv != APR_ENOTIMPL) {
apr_err("socket receive buffer", rv);
}
}
c->start = lasttime = apr_time_now();
#ifdef USE_SSL
if (is_ssl) {
BIO *bio;
apr_os_sock_t fd;
if ((c->ssl = SSL_new(ssl_ctx)) == NULL) {
BIO_printf(bio_err, "SSL_new failed.\n");
ERR_print_errors(bio_err);
exit(1);
}
ssl_rand_seed();
apr_os_sock_get(&fd, c->aprsock);
bio = BIO_new_socket(fd, BIO_NOCLOSE);
SSL_set_bio(c->ssl, bio, bio);
SSL_set_connect_state(c->ssl);
if (verbosity >= 4) {
BIO_set_callback(bio, ssl_print_cb);
BIO_set_callback_arg(bio, (void *)bio_err);
}
} else {
c->ssl = NULL;
}
#endif
if ((rv = apr_socket_connect(c->aprsock, destsa)) != APR_SUCCESS) {
if (APR_STATUS_IS_EINPROGRESS(rv)) {
apr_pollfd_t new_pollfd;
c->state = STATE_CONNECTING;
c->rwrite = 0;
new_pollfd.desc_type = APR_POLL_SOCKET;
new_pollfd.reqevents = APR_POLLOUT;
new_pollfd.desc.s = c->aprsock;
new_pollfd.client_data = c;
apr_pollset_add(readbits, &new_pollfd);
return;
}
else {
apr_pollfd_t remove_pollfd;
remove_pollfd.desc_type = APR_POLL_SOCKET;
remove_pollfd.desc.s = c->aprsock;
apr_pollset_remove(readbits, &remove_pollfd);
apr_socket_close(c->aprsock);
err_conn++;
if (bad++ > 10) {
fprintf(stderr,
"\nTest aborted after 10 failures\n\n");
apr_err("apr_socket_connect()", rv);
}
c->state = STATE_UNCONNECTED;
start_connect(c);
return;
}
}
/* connected first time */
c->state = STATE_CONNECTED;
started++;
#ifdef USE_SSL
if (c->ssl) {
ssl_proceed_handshake(c);
} else
#endif
{
write_request(c);
}
}
/* --------------------------------------------------------- */
/* close down connection and save stats */
static void close_connection(struct connection * c)
{
if (c->read == 0 && c->keepalive) {
/*
* server has legitimately shut down an idle keep alive request
*/
if (good)
good--; /* connection never happened */
}
else {
if (good == 1) {
/* first time here */
doclen = c->bread;
}
else if (c->bread != doclen) {
bad++;
err_length++;
}
/* save out time */
if (done < requests) {
struct data *s = &stats[done++];
c->done = lasttime = apr_time_now();
s->starttime = c->start;
s->ctime = ap_max(0, c->connect - c->start);
s->time = ap_max(0, c->done - c->start);
s->waittime = ap_max(0, c->beginread - c->endwrite);
if (heartbeatres && !(done % heartbeatres)) {
fprintf(stderr, "Completed %d requests\n", done);
fflush(stderr);
}
}
}
{
apr_pollfd_t remove_pollfd;
remove_pollfd.desc_type = APR_POLL_SOCKET;
remove_pollfd.desc.s = c->aprsock;
apr_pollset_remove(readbits, &remove_pollfd);
#ifdef USE_SSL
if (c->ssl) {
SSL_shutdown(c->ssl);
SSL_free(c->ssl);
c->ssl = NULL;
}
#endif
apr_socket_close(c->aprsock);
}
c->state = STATE_UNCONNECTED;
/* connect again */
start_connect(c);
return;
}
/* --------------------------------------------------------- */
/* read data from connection */
static void read_connection(struct connection * c)
{
apr_size_t r;
apr_status_t status;
char *part;
char respcode[4]; /* 3 digits and null */
r = sizeof(buffer);
#ifdef USE_SSL
if (c->ssl) {
status = SSL_read(c->ssl, buffer, r);
if (status <= 0) {
int scode = SSL_get_error(c->ssl, status);
if (scode == SSL_ERROR_ZERO_RETURN) {
/* connection closed cleanly: */
good++;
close_connection(c);
}
else if (scode != SSL_ERROR_WANT_WRITE
&& scode != SSL_ERROR_WANT_READ) {
/* some fatal error: */
c->read = 0;
BIO_printf(bio_err, "SSL read failed - closing connection\n");
ERR_print_errors(bio_err);
close_connection(c);
}
return;
}
r = status;
}
else
#endif
{
status = apr_socket_recv(c->aprsock, buffer, &r);
if (APR_STATUS_IS_EAGAIN(status))
return;
else if (r == 0 && APR_STATUS_IS_EOF(status)) {
good++;
close_connection(c);
return;
}
/* catch legitimate fatal apr_socket_recv errors */
else if (status != APR_SUCCESS) {
err_recv++;
if (recverrok) {
bad++;
close_connection(c);
if (verbosity >= 1) {
char buf[120];
fprintf(stderr,"%s: %s (%d)\n", "apr_socket_recv", apr_strerror(status, buf, sizeof buf), status);
}
return;
} else {
apr_err("apr_socket_recv", status);
}
}
}
totalread += r;
if (c->read == 0) {
c->beginread = apr_time_now();
}
c->read += r;
if (!c->gotheader) {
char *s;
int l = 4;
apr_size_t space = CBUFFSIZE - c->cbx - 1; /* -1 allows for \0 term */
int tocopy = (space < r) ? space : r;
#ifdef NOT_ASCII
apr_size_t inbytes_left = space, outbytes_left = space;
status = apr_xlate_conv_buffer(from_ascii, buffer, &inbytes_left,
c->cbuff + c->cbx, &outbytes_left);
if (status || inbytes_left || outbytes_left) {
fprintf(stderr, "only simple translation is supported (%d/%" APR_SIZE_T_FMT
"/%" APR_SIZE_T_FMT ")\n", status, inbytes_left, outbytes_left);
exit(1);
}
#else
memcpy(c->cbuff + c->cbx, buffer, space);
#endif /* NOT_ASCII */
c->cbx += tocopy;
space -= tocopy;
c->cbuff[c->cbx] = 0; /* terminate for benefit of strstr */
if (verbosity >= 2) {
printf("LOG: header received:\n%s\n", c->cbuff);
}
s = strstr(c->cbuff, "\r\n\r\n");
/*
* this next line is so that we talk to NCSA 1.5 which blatantly
* breaks the http specifaction
*/
if (!s) {
s = strstr(c->cbuff, "\n\n");
l = 2;
}
if (!s) {
/* read rest next time */
if (space) {
return;
}
else {
/* header is in invalid or too big - close connection */
apr_pollfd_t remove_pollfd;
remove_pollfd.desc_type = APR_POLL_SOCKET;
remove_pollfd.desc.s = c->aprsock;
apr_pollset_remove(readbits, &remove_pollfd);
apr_socket_close(c->aprsock);
err_response++;
if (bad++ > 10) {
err("\nTest aborted after 10 failures\n\n");
}
start_connect(c);
}
}
else {
/* have full header */
if (!good) {
/*
* this is first time, extract some interesting info
*/
char *p, *q;
p = strstr(c->cbuff, "Server:");
q = servername;
if (p) {
p += 8;
while (*p > 32)
*q++ = *p++;
}
*q = 0;
}
/*
* XXX: this parsing isn't even remotely HTTP compliant... but in
* the interest of speed it doesn't totally have to be, it just
* needs to be extended to handle whatever servers folks want to
* test against. -djg
*/
/* check response code */
part = strstr(c->cbuff, "HTTP"); /* really HTTP/1.x_ */
if (part && strlen(part) > strlen("HTTP/1.x_")) {
strncpy(respcode, (part + strlen("HTTP/1.x_")), 3);
respcode[3] = '\0';
}
else {
strcpy(respcode, "500");
}
if (respcode[0] != '2') {
err_response++;
if (verbosity >= 2)
printf("WARNING: Response code not 2xx (%s)\n", respcode);
}
else if (verbosity >= 3) {
printf("LOG: Response code = %s\n", respcode);
}
c->gotheader = 1;
*s = 0; /* terminate at end of header */
if (keepalive &&
(strstr(c->cbuff, "Keep-Alive")
|| strstr(c->cbuff, "keep-alive"))) { /* for benefit of MSIIS */
char *cl;
cl = strstr(c->cbuff, "Content-Length:");
/* handle NCSA, which sends Content-length: */
if (!cl)
cl = strstr(c->cbuff, "Content-length:");
if (cl) {
c->keepalive = 1;
/* response to HEAD doesn't have entity body */
c->length = posting >= 0 ? atoi(cl + 16) : 0;
}
/* The response may not have a Content-Length header */
if (!cl) {
c->keepalive = 1;
c->length = 0;
}
}
c->bread += c->cbx - (s + l - c->cbuff) + r - tocopy;
totalbread += c->bread;
}
}
else {
/* outside header, everything we have read is entity body */
c->bread += r;
totalbread += r;
}
if (c->keepalive && (c->bread >= c->length)) {
/* finished a keep-alive connection */
good++;
/* save out time */
if (good == 1) {
/* first time here */
doclen = c->bread;
}
else if (c->bread != doclen) {
bad++;
err_length++;
}
if (done < requests) {
struct data *s = &stats[done++];
doneka++;
c->done = apr_time_now();
s->starttime = c->start;
s->ctime = ap_max(0, c->connect - c->start);
s->time = ap_max(0, c->done - c->start);
s->waittime = ap_max(0, c->beginread - c->endwrite);
if (heartbeatres && !(done % heartbeatres)) {
fprintf(stderr, "Completed %d requests\n", done);
fflush(stderr);
}
}
c->keepalive = 0;
c->length = 0;
c->gotheader = 0;
c->cbx = 0;
c->read = c->bread = 0;
/* zero connect time with keep-alive */
c->start = c->connect = lasttime = apr_time_now();
write_request(c);
}
}
/* --------------------------------------------------------- */
/* run the tests */
static void test(void)
{
apr_time_t stoptime;
apr_int16_t rv;
int i;
apr_status_t status;
int snprintf_res = 0;
#ifdef NOT_ASCII
apr_size_t inbytes_left, outbytes_left;
#endif
if (isproxy) {
connecthost = apr_pstrdup(cntxt, proxyhost);
connectport = proxyport;
}
else {
connecthost = apr_pstrdup(cntxt, hostname);
connectport = port;
}
if (!use_html) {
printf("Benchmarking %s ", hostname);
if (isproxy)
printf("[through %s:%d] ", proxyhost, proxyport);
printf("(be patient)%s",
(heartbeatres ? "\n" : "..."));
fflush(stdout);
}
con = calloc(concurrency, sizeof(struct connection));
stats = calloc(requests, sizeof(struct data));
if ((status = apr_pollset_create(&readbits, concurrency, cntxt, 0)) != APR_SUCCESS) {
apr_err("apr_pollset_create failed", status);
}
/* add default headers if necessary */
if (!opt_host) {
/* Host: header not overridden, add default value to hdrs */
hdrs = apr_pstrcat(cntxt, hdrs, "Host: ", host_field, colonhost, "\r\n", NULL);
}
else {
/* Header overridden, no need to add, as it is already in hdrs */
}
if (!opt_useragent) {
/* User-Agent: header not overridden, add default value to hdrs */
hdrs = apr_pstrcat(cntxt, hdrs, "User-Agent: ApacheBench/", AP_AB_BASEREVISION, "\r\n", NULL);
}
else {
/* Header overridden, no need to add, as it is already in hdrs */
}
if (!opt_accept) {
/* Accept: header not overridden, add default value to hdrs */
hdrs = apr_pstrcat(cntxt, hdrs, "Accept: */*\r\n", NULL);
}
else {
/* Header overridden, no need to add, as it is already in hdrs */
}
/* setup request */
if (posting <= 0) {
snprintf_res = apr_snprintf(request, sizeof(_request),
"%s %s HTTP/1.0\r\n"
"%s" "%s" "%s"
"%s" "\r\n",
(posting == 0) ? "GET" : "HEAD",
(isproxy) ? fullurl : path,
keepalive ? "Connection: Keep-Alive\r\n" : "",
cookie, auth, hdrs);
}
else {
snprintf_res = apr_snprintf(request, sizeof(_request),
"POST %s HTTP/1.0\r\n"
"%s" "%s" "%s"
"Content-length: %" APR_SIZE_T_FMT "\r\n"
"Content-type: %s\r\n"
"%s"
"\r\n",
(isproxy) ? fullurl : path,
keepalive ? "Connection: Keep-Alive\r\n" : "",
cookie, auth,
postlen,
(content_type[0]) ? content_type : "text/plain", hdrs);
}
if (snprintf_res >= sizeof(_request)) {
err("Request too long\n");
}
if (verbosity >= 2)
printf("INFO: POST header == \n---\n%s\n---\n", request);
reqlen = strlen(request);
/*
* Combine headers and (optional) post file into one contineous buffer
*/
if (posting == 1) {
char *buff = malloc(postlen + reqlen + 1);
if (!buff) {
fprintf(stderr, "error creating request buffer: out of memory\n");
return;
}
strcpy(buff, request);
memcpy(buff + reqlen, postdata, postlen);
request = buff;
}
#ifdef NOT_ASCII
inbytes_left = outbytes_left = reqlen;
status = apr_xlate_conv_buffer(to_ascii, request, &inbytes_left,
request, &outbytes_left);
if (status || inbytes_left || outbytes_left) {
fprintf(stderr, "only simple translation is supported (%d/%"
APR_SIZE_T_FMT "/%" APR_SIZE_T_FMT ")\n",
status, inbytes_left, outbytes_left);
exit(1);
}
#endif /* NOT_ASCII */
/* This only needs to be done once */
if ((rv = apr_sockaddr_info_get(&destsa, connecthost, APR_UNSPEC, connectport, 0, cntxt))
!= APR_SUCCESS) {
char buf[120];
apr_snprintf(buf, sizeof(buf),
"apr_sockaddr_info_get() for %s", connecthost);
apr_err(buf, rv);
}
/* ok - lets start */
start = lasttime = apr_time_now();
stoptime = tlimit ? (start + apr_time_from_sec(tlimit)) : AB_MAX;
#ifdef SIGINT
/* Output the results if the user terminates the run early. */
apr_signal(SIGINT, output_results);
#endif
/* initialise lots of requests */
for (i = 0; i < concurrency; i++) {
con[i].socknum = i;
start_connect(&con[i]);
}
do {
apr_int32_t n;
const apr_pollfd_t *pollresults;
n = concurrency;
status = apr_pollset_poll(readbits, aprtimeout, &n, &pollresults);
if (status != APR_SUCCESS)
apr_err("apr_poll", status);
if (!n) {
err("\nServer timed out\n\n");
}
for (i = 0; i < n; i++) {
const apr_pollfd_t *next_fd = &(pollresults[i]);
struct connection *c;
c = next_fd->client_data;
/*
* If the connection isn't connected how can we check it?
*/
if (c->state == STATE_UNCONNECTED)
continue;
rv = next_fd->rtnevents;
#ifdef USE_SSL
if (c->state == STATE_CONNECTED && c->ssl && SSL_in_init(c->ssl)) {
ssl_proceed_handshake(c);
continue;
}
#endif
/*
* Notes: APR_POLLHUP is set after FIN is received on some
* systems, so treat that like APR_POLLIN so that we try to read
* again.
*
* Some systems return APR_POLLERR with APR_POLLHUP. We need to
* call read_connection() for APR_POLLHUP, so check for
* APR_POLLHUP first so that a closed connection isn't treated
* like an I/O error. If it is, we never figure out that the
* connection is done and we loop here endlessly calling
* apr_poll().
*/
if ((rv & APR_POLLIN) || (rv & APR_POLLPRI) || (rv & APR_POLLHUP))
read_connection(c);
if ((rv & APR_POLLERR) || (rv & APR_POLLNVAL)) {
bad++;
err_except++;
start_connect(c);
continue;
}
if (rv & APR_POLLOUT) {
if (c->state == STATE_CONNECTING) {
apr_pollfd_t remove_pollfd;
rv = apr_socket_connect(c->aprsock, destsa);
remove_pollfd.desc_type = APR_POLL_SOCKET;
remove_pollfd.desc.s = c->aprsock;
apr_pollset_remove(readbits, &remove_pollfd);
if (rv != APR_SUCCESS) {
apr_socket_close(c->aprsock);
err_conn++;
if (bad++ > 10) {
fprintf(stderr,
"\nTest aborted after 10 failures\n\n");
apr_err("apr_socket_connect()", rv);
}
c->state = STATE_UNCONNECTED;
start_connect(c);
continue;
}
else {
c->state = STATE_CONNECTED;
started++;
#ifdef USE_SSL
if (c->ssl)
ssl_proceed_handshake(c);
else
#endif
write_request(c);
}
}
else {
write_request(c);
}
}
/*
* When using a select based poll every time we check the bits
* are reset. In 1.3's ab we copied the FD_SET's each time
* through, but here we're going to check the state and if the
* connection is in STATE_READ or STATE_CONNECTING we'll add the
* socket back in as APR_POLLIN.
*/
if (c->state == STATE_READ) {
apr_pollfd_t new_pollfd;
new_pollfd.desc_type = APR_POLL_SOCKET;
new_pollfd.reqevents = APR_POLLIN;
new_pollfd.desc.s = c->aprsock;
new_pollfd.client_data = c;
apr_pollset_add(readbits, &new_pollfd);
}
}
} while (lasttime < stoptime && done < requests);
if (heartbeatres)
fprintf(stderr, "Finished %d requests\n", done);
else
printf("..done\n");
if (use_html)
output_html_results();
else
output_results(0);
}
/* ------------------------------------------------------- */
/* display copyright information */
static void copyright(void)
{
if (!use_html) {
printf("This is ApacheBench, Version %s\n", AP_AB_BASEREVISION " <$Revision$>");
printf("Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/\n");
printf("Licensed to The Apache Software Foundation, http://www.apache.org/\n");
printf("\n");
}
else {
printf("<p>\n");
printf(" This is ApacheBench, Version %s <i>&lt;%s&gt;</i><br>\n", AP_AB_BASEREVISION, "$Revision$");
printf(" Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/<br>\n");
printf(" Licensed to The Apache Software Foundation, http://www.apache.org/<br>\n");
printf("</p>\n<p>\n");
}
}
/* display usage information */
static void usage(const char *progname)
{
fprintf(stderr, "Usage: %s [options] [http"
#ifdef USE_SSL
"[s]"
#endif
"://]hostname[:port]/path\n", progname);
/* 80 column ruler: ********************************************************************************
*/
fprintf(stderr, "Options are:\n");
fprintf(stderr, " -n requests Number of requests to perform\n");
fprintf(stderr, " -c concurrency Number of multiple requests to make\n");
fprintf(stderr, " -t timelimit Seconds to max. wait for responses\n");
fprintf(stderr, " -b windowsize Size of TCP send/receive buffer, in bytes\n");
fprintf(stderr, " -p postfile File containing data to POST. Remember also to set -T\n");
fprintf(stderr, " -T content-type Content-type header for POSTing, eg.\n");
fprintf(stderr, " 'application/x-www-form-urlencoded'\n");
fprintf(stderr, " Default is 'text/plain'\n");
fprintf(stderr, " -v verbosity How much troubleshooting info to print\n");
fprintf(stderr, " -w Print out results in HTML tables\n");
fprintf(stderr, " -i Use HEAD instead of GET\n");
fprintf(stderr, " -x attributes String to insert as table attributes\n");
fprintf(stderr, " -y attributes String to insert as tr attributes\n");
fprintf(stderr, " -z attributes String to insert as td or th attributes\n");
fprintf(stderr, " -C attribute Add cookie, eg. 'Apache=1234. (repeatable)\n");
fprintf(stderr, " -H attribute Add Arbitrary header line, eg. 'Accept-Encoding: gzip'\n");
fprintf(stderr, " Inserted after all normal header lines. (repeatable)\n");
fprintf(stderr, " -A attribute Add Basic WWW Authentication, the attributes\n");
fprintf(stderr, " are a colon separated username and password.\n");
fprintf(stderr, " -P attribute Add Basic Proxy Authentication, the attributes\n");
fprintf(stderr, " are a colon separated username and password.\n");
fprintf(stderr, " -X proxy:port Proxyserver and port number to use\n");
fprintf(stderr, " -V Print version number and exit\n");
fprintf(stderr, " -k Use HTTP KeepAlive feature\n");
fprintf(stderr, " -d Do not show percentiles served table.\n");
fprintf(stderr, " -S Do not show confidence estimators and warnings.\n");
fprintf(stderr, " -g filename Output collected data to gnuplot format file.\n");
fprintf(stderr, " -e filename Output CSV file with percentages served\n");
fprintf(stderr, " -r Don't exit on socket receive errors.\n");
fprintf(stderr, " -h Display usage information (this message)\n");
#ifdef USE_SSL
fprintf(stderr, " -Z ciphersuite Specify SSL/TLS cipher suite (See openssl ciphers)\n");
fprintf(stderr, " -f protocol Specify SSL/TLS protocol (SSL2, SSL3, TLS1, or ALL)\n");
#endif
exit(EINVAL);
}
/* ------------------------------------------------------- */
/* split URL into parts */
static int parse_url(char *url)
{
char *cp;
char *h;
char *scope_id;
apr_status_t rv;
/* Save a copy for the proxy */
fullurl = apr_pstrdup(cntxt, url);
if (strlen(url) > 7 && strncmp(url, "http://", 7) == 0) {
url += 7;
#ifdef USE_SSL
is_ssl = 0;
#endif
}
else
#ifdef USE_SSL
if (strlen(url) > 8 && strncmp(url, "https://", 8) == 0) {
url += 8;
is_ssl = 1;
}
#else
if (strlen(url) > 8 && strncmp(url, "https://", 8) == 0) {
fprintf(stderr, "SSL not compiled in; no https support\n");
exit(1);
}
#endif
if ((cp = strchr(url, '/')) == NULL)
return 1;
h = apr_palloc(cntxt, cp - url + 1);
memcpy(h, url, cp - url);
h[cp - url] = '\0';
rv = apr_parse_addr_port(&hostname, &scope_id, &port, h, cntxt);
if (rv != APR_SUCCESS || !hostname || scope_id) {
return 1;
}
path = apr_pstrdup(cntxt, cp);
*cp = '\0';
if (*url == '[') { /* IPv6 numeric address string */
host_field = apr_psprintf(cntxt, "[%s]", hostname);
}
else {
host_field = hostname;
}
if (port == 0) { /* no port specified */
#ifdef USE_SSL
if (is_ssl)
port = 443;
else
#endif
port = 80;
}
if ((
#ifdef USE_SSL
is_ssl && (port != 443)) || (!is_ssl &&
#endif
(port != 80)))
{
colonhost = apr_psprintf(cntxt,":%d",port);
} else
colonhost = "";
return 0;
}
/* ------------------------------------------------------- */
/* read data to POST from file, save contents and length */
static int open_postfile(const char *pfile)
{
apr_file_t *postfd;
apr_finfo_t finfo;
apr_status_t rv;
char errmsg[120];
rv = apr_file_open(&postfd, pfile, APR_READ, APR_OS_DEFAULT, cntxt);
if (rv != APR_SUCCESS) {
fprintf(stderr, "ab: Could not open POST data file (%s): %s\n", pfile,
apr_strerror(rv, errmsg, sizeof errmsg));
return rv;
}
apr_file_info_get(&finfo, APR_FINFO_NORM, postfd);
postlen = (apr_size_t)finfo.size;
postdata = malloc(postlen);
if (!postdata) {
fprintf(stderr, "ab: Could not allocate POST data buffer\n");
return APR_ENOMEM;
}
rv = apr_file_read_full(postfd, postdata, postlen, NULL);
if (rv != APR_SUCCESS) {
fprintf(stderr, "ab: Could not read POST data file: %s\n",
apr_strerror(rv, errmsg, sizeof errmsg));
return rv;
}
apr_file_close(postfd);
return 0;
}
/* ------------------------------------------------------- */
/* sort out command-line args and call test */
int main(int argc, const char * const argv[])
{
int r, l;
char tmp[1024];
apr_status_t status;
apr_getopt_t *opt;
const char *optarg;
char c;
#ifdef USE_SSL
SSL_METHOD *meth = SSLv23_client_method();
#endif
/* table defaults */
tablestring = "";
trstring = "";
tdstring = "bgcolor=white";
cookie = "";
auth = "";
proxyhost[0] = '\0';
hdrs = "";
apr_app_initialize(&argc, &argv, NULL);
atexit(apr_terminate);
apr_pool_create(&cntxt, NULL);
#ifdef NOT_ASCII
status = apr_xlate_open(&to_ascii, "ISO-8859-1", APR_DEFAULT_CHARSET, cntxt);
if (status) {
fprintf(stderr, "apr_xlate_open(to ASCII)->%d\n", status);
exit(1);
}
status = apr_xlate_open(&from_ascii, APR_DEFAULT_CHARSET, "ISO-8859-1", cntxt);
if (status) {
fprintf(stderr, "apr_xlate_open(from ASCII)->%d\n", status);
exit(1);
}
status = apr_base64init_ebcdic(to_ascii, from_ascii);
if (status) {
fprintf(stderr, "apr_base64init_ebcdic()->%d\n", status);
exit(1);
}
#endif
apr_getopt_init(&opt, cntxt, argc, argv);
while ((status = apr_getopt(opt, "n:c:t:b:T:p:v:rkVhwix:y:z:C:H:P:A:g:X:de:Sq"
#ifdef USE_SSL
"Z:f:"
#endif
,&c, &optarg)) == APR_SUCCESS) {
switch (c) {
case 'n':
requests = atoi(optarg);
if (requests <= 0) {
err("Invalid number of requests\n");
}
break;
case 'k':
keepalive = 1;
break;
case 'q':
heartbeatres = 0;
break;
case 'c':
concurrency = atoi(optarg);
break;
case 'b':
windowsize = atoi(optarg);
break;
case 'i':
if (posting == 1)
err("Cannot mix POST and HEAD\n");
posting = -1;
break;
case 'g':
gnuplot = strdup(optarg);
break;
case 'd':
percentile = 0;
break;
case 'e':
csvperc = strdup(optarg);
break;
case 'S':
confidence = 0;
break;
case 'p':
if (posting != 0)
err("Cannot mix POST and HEAD\n");
if (0 == (r = open_postfile(optarg))) {
posting = 1;
}
else if (postdata) {
exit(r);
}
break;
case 'r':
recverrok = 1;
break;
case 'v':
verbosity = atoi(optarg);
break;
case 't':
tlimit = atoi(optarg);
requests = MAX_REQUESTS; /* need to size data array on
* something */
break;
case 'T':
strcpy(content_type, optarg);
break;
case 'C':
cookie = apr_pstrcat(cntxt, "Cookie: ", optarg, "\r\n", NULL);
break;
case 'A':
/*
* assume username passwd already to be in colon separated form.
* Ready to be uu-encoded.
*/
while (apr_isspace(*optarg))
optarg++;
if (apr_base64_encode_len(strlen(optarg)) > sizeof(tmp)) {
err("Authentication credentials too long\n");
}
l = apr_base64_encode(tmp, optarg, strlen(optarg));
tmp[l] = '\0';
auth = apr_pstrcat(cntxt, auth, "Authorization: Basic ", tmp,
"\r\n", NULL);
break;
case 'P':
/*
* assume username passwd already to be in colon separated form.
*/
while (apr_isspace(*optarg))
optarg++;
if (apr_base64_encode_len(strlen(optarg)) > sizeof(tmp)) {
err("Proxy credentials too long\n");
}
l = apr_base64_encode(tmp, optarg, strlen(optarg));
tmp[l] = '\0';
auth = apr_pstrcat(cntxt, auth, "Proxy-Authorization: Basic ",
tmp, "\r\n", NULL);
break;
case 'H':
hdrs = apr_pstrcat(cntxt, hdrs, optarg, "\r\n", NULL);
/*
* allow override of some of the common headers that ab adds
*/
if (strncasecmp(optarg, "Host:", 5) == 0) {
opt_host = 1;
} else if (strncasecmp(optarg, "Accept:", 7) == 0) {
opt_accept = 1;
} else if (strncasecmp(optarg, "User-Agent:", 11) == 0) {
opt_useragent = 1;
}
break;
case 'w':
use_html = 1;
break;
/*
* if any of the following three are used, turn on html output
* automatically
*/
case 'x':
use_html = 1;
tablestring = optarg;
break;
case 'X':
{
char *p;
/*
* assume proxy-name[:port]
*/
if ((p = strchr(optarg, ':'))) {
*p = '\0';
p++;
proxyport = atoi(p);
}
strcpy(proxyhost, optarg);
isproxy = 1;
}
break;
case 'y':
use_html = 1;
trstring = optarg;
break;
case 'z':
use_html = 1;
tdstring = optarg;
break;
case 'h':
usage(argv[0]);
break;
case 'V':
copyright();
return 0;
#ifdef USE_SSL
case 'Z':
ssl_cipher = strdup(optarg);
break;
case 'f':
if (strncasecmp(optarg, "ALL", 3) == 0) {
meth = SSLv23_client_method();
} else if (strncasecmp(optarg, "SSL2", 4) == 0) {
meth = SSLv2_client_method();
} else if (strncasecmp(optarg, "SSL3", 4) == 0) {
meth = SSLv3_client_method();
} else if (strncasecmp(optarg, "TLS1", 4) == 0) {
meth = TLSv1_client_method();
}
break;
#endif
}
}
if (opt->ind != argc - 1) {
fprintf(stderr, "%s: wrong number of arguments\n", argv[0]);
usage(argv[0]);
}
if (parse_url(apr_pstrdup(cntxt, opt->argv[opt->ind++]))) {
fprintf(stderr, "%s: invalid URL\n", argv[0]);
usage(argv[0]);
}
if ((concurrency < 0) || (concurrency > MAX_CONCURRENCY)) {
fprintf(stderr, "%s: Invalid Concurrency [Range 0..%d]\n",
argv[0], MAX_CONCURRENCY);
usage(argv[0]);
}
if (concurrency > requests) {
fprintf(stderr, "%s: Cannot use concurrency level greater than "
"total number of requests\n", argv[0]);
usage(argv[0]);
}
if ((heartbeatres) && (requests > 150)) {
heartbeatres = requests / 10; /* Print line every 10% of requests */
if (heartbeatres < 100)
heartbeatres = 100; /* but never more often than once every 100
* connections. */
}
else
heartbeatres = 0;
#ifdef USE_SSL
#ifdef RSAREF
R_malloc_init();
#else
CRYPTO_malloc_init();
#endif
SSL_load_error_strings();
SSL_library_init();
bio_out=BIO_new_fp(stdout,BIO_NOCLOSE);
bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
if (!(ssl_ctx = SSL_CTX_new(meth))) {
BIO_printf(bio_err, "Could not initialize SSL Context.\n");
ERR_print_errors(bio_err);
exit(1);
}
SSL_CTX_set_options(ssl_ctx, SSL_OP_ALL);
if (ssl_cipher != NULL) {
if (!SSL_CTX_set_cipher_list(ssl_ctx, ssl_cipher)) {
fprintf(stderr, "error setting cipher list [%s]\n", ssl_cipher);
ERR_print_errors_fp(stderr);
exit(1);
}
}
if (verbosity >= 3) {
SSL_CTX_set_info_callback(ssl_ctx, ssl_state_cb);
}
#endif
#ifdef SIGPIPE
apr_signal(SIGPIPE, SIG_IGN); /* Ignore writes to connections that
* have been closed at the other end. */
#endif
copyright();
test();
apr_pool_destroy(cntxt);
return 0;
}
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