WebBench v1.5 C源代码500行左右,编译,运行,压力测试

chunli@Linux:~$ cat socket.c
/* $Id: socket.c 1.1 1995/01/01 07:11:14 cthuang Exp $
*
* This module has been modified by Radim Kolar for OS/2 emx
*/

/***********************************************************************
module:       socket.c
program:      popclient
SCCS ID:      @(#)socket.c    1.5  4/1/94
programmer:   Virginia Tech Computing Center
compiler:     DEC RISC C compiler (Ultrix 4.1)
environment:  DEC Ultrix 4.3
description:  UNIX sockets code.
***********************************************************************/

#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/time.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

int Socket(const char *host, int clientPort)
{
int sock;
unsigned long inaddr;
struct sockaddr_in ad;
struct hostent *hp;

memset(&ad, 0, sizeof(ad));
ad.sin_family = AF_INET;

inaddr = inet_addr(host);
if (inaddr != INADDR_NONE)
memcpy(&ad.sin_addr, &inaddr, sizeof(inaddr));
else
{
hp = gethostbyname(host);
if (hp == NULL)
return -1;
memcpy(&ad.sin_addr, hp->h_addr, hp->h_length);
}
ad.sin_port = htons(clientPort);

sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock < 0)
return sock;
if (connect(sock, (struct sockaddr *)&ad, sizeof(ad)) < 0)
return -1;
return sock;
}

chunli@Linux:~$ cat webbench.c
/*
* (C) Radim Kolar 1997-2004
* This is free software, see GNU Public License version 2 for
* details.
*
* Simple forking WWW Server benchmark:
*
* Usage:
*   webbench --help
*
* Return codes:
*    0 - sucess
*    1 - benchmark failed (server is not on-line)
*    2 - bad param
*    3 - internal error, fork failed
*
*/
#include "socket.c"
#include <unistd.h>
#include <sys/param.h>
#include <rpc/types.h>
#include <getopt.h>
#include <strings.h>
#include <time.h>
#include <signal.h>

/* values */
volatile int timerexpired=0;
int speed=0;
int failed=0;
int bytes=0;
/* globals */
int http10=1; /* 0 - http/0.9, 1 - http/1.0, 2 - http/1.1 */
/* Allow: GET, HEAD, OPTIONS, TRACE */
#define METHOD_GET 0
#define METHOD_HEAD 1
#define METHOD_OPTIONS 2
#define METHOD_TRACE 3
#define PROGRAM_VERSION "1.5"
int method=METHOD_GET;
int clients=1;
int force=0;
int force_reload=0;
int proxyport=80;
char *proxyhost=NULL;
int benchtime=30;
/* internal */
int mypipe[2];
char host[MAXHOSTNAMELEN];
#define REQUEST_SIZE 2048
char request[REQUEST_SIZE];

static const struct option long_options[]=
{
{"force",no_argument,&force,1},
{"reload",no_argument,&force_reload,1},
{"time",required_argument,NULL,'t'},
{"help",no_argument,NULL,'?'},
{"http09",no_argument,NULL,'9'},
{"http10",no_argument,NULL,'1'},
{"http11",no_argument,NULL,'2'},
{"get",no_argument,&method,METHOD_GET},
{"head",no_argument,&method,METHOD_HEAD},
{"options",no_argument,&method,METHOD_OPTIONS},
{"trace",no_argument,&method,METHOD_TRACE},
{"version",no_argument,NULL,'V'},
{"proxy",required_argument,NULL,'p'},
{"clients",required_argument,NULL,'c'},
{NULL,0,NULL,0}
};

/* prototypes */
static void benchcore(const char* host,const int port, const char *request);
static int bench(void);
static void build_request(const char *url);

static void alarm_handler(int signal)
{
timerexpired=1;
}

static void usage(void)
{
fprintf(stderr,
"webbench [option]... URL\n"
"  -f|--force               Don't wait for reply from server.\n"
"  -r|--reload              Send reload request - Pragma: no-cache.\n"
"  -t|--time <sec>          Run benchmark for <sec> seconds. Default 30.\n"
"  -p|--proxy <server:port> Use proxy server for request.\n"
"  -c|--clients <n>         Run <n> HTTP clients at once. Default one.\n"
"  -9|--http09              Use HTTP/0.9 style requests.\n"
"  -1|--http10              Use HTTP/1.0 protocol.\n"
"  -2|--http11              Use HTTP/1.1 protocol.\n"
"  --get                    Use GET request method.\n"
"  --head                   Use HEAD request method.\n"
"  --options                Use OPTIONS request method.\n"
"  --trace                  Use TRACE request method.\n"
"  -?|-h|--help             This information.\n"
"  -V|--version             Display program version.\n"
);
};
int main(int argc, char *argv[])
{
int opt=0;
int options_index=0;
char *tmp=NULL;

if(argc==1)
{
usage();
return 2;
}

while((opt=getopt_long(argc,argv,"912Vfrt:p:c:?h",long_options,&options_index))!=EOF )
{
switch(opt)
{
case  0 : break;
case 'f': force=1;break;
case 'r': force_reload=1;break;
case '9': http10=0;break;
case '1': http10=1;break;
case '2': http10=2;break;
case 'V': printf(PROGRAM_VERSION"\n");exit(0);
case 't': benchtime=atoi(optarg);break;
case 'p':
/* proxy server parsing server:port */
tmp=strrchr(optarg,':');
proxyhost=optarg;
if(tmp==NULL)
{
break;
}
if(tmp==optarg)
{
fprintf(stderr,"Error in option --proxy %s: Missing hostname.\n",optarg);
return 2;
}
if(tmp==optarg+strlen(optarg)-1)
{
fprintf(stderr,"Error in option --proxy %s Port number is missing.\n",optarg);
return 2;
}
*tmp='\0';
proxyport=atoi(tmp+1);break;
case ':':
case 'h':
case '?': usage();return 2;break;
case 'c': clients=atoi(optarg);break;
}
}

if(optind==argc) {
fprintf(stderr,"webbench: Missing URL!\n");
usage();
return 2;
}

if(clients==0) clients=1;
if(benchtime==0) benchtime=60;
/* Copyright */
fprintf(stderr,"Webbench - Simple Web Benchmark "PROGRAM_VERSION"\n"
"Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.\n"
);
build_request(argv[optind]);
/* print bench info */
printf("\nBenchmarking: ");
switch(method)
{
case METHOD_GET:
default:
printf("GET");break;
case METHOD_OPTIONS:
printf("OPTIONS");break;
case METHOD_HEAD:
printf("HEAD");break;
case METHOD_TRACE:
printf("TRACE");break;
}
printf(" %s",argv[optind]);
switch(http10)
{
case 0: printf(" (using HTTP/0.9)");break;
case 2: printf(" (using HTTP/1.1)");break;
}
printf("\n");
if(clients==1) printf("1 client");
else
printf("%d clients",clients);

printf(", running %d sec", benchtime);
if(force) printf(", early socket close");
if(proxyhost!=NULL) printf(", via proxy server %s:%d",proxyhost,proxyport);
if(force_reload) printf(", forcing reload");
printf(".\n");
return bench();
}

void build_request(const char *url)
{
char tmp[10];
int i;

bzero(host,MAXHOSTNAMELEN);
bzero(request,REQUEST_SIZE);

if(force_reload && proxyhost!=NULL && http10<1) http10=1;
if(method==METHOD_HEAD && http10<1) http10=1;
if(method==METHOD_OPTIONS && http10<2) http10=2;
if(method==METHOD_TRACE && http10<2) http10=2;

switch(method)
{
default:
case METHOD_GET: strcpy(request,"GET");break;
case METHOD_HEAD: strcpy(request,"HEAD");break;
case METHOD_OPTIONS: strcpy(request,"OPTIONS");break;
case METHOD_TRACE: strcpy(request,"TRACE");break;
}

strcat(request," ");

if(NULL==strstr(url,"://"))
{
fprintf(stderr, "\n%s: is not a valid URL.\n",url);
exit(2);
}
if(strlen(url)>1500)
{
fprintf(stderr,"URL is too long.\n");
exit(2);
}
if(proxyhost==NULL)
if (0!=strncasecmp("http://",url,7))
{ fprintf(stderr,"\nOnly HTTP protocol is directly supported, set --proxy for others.\n");
exit(2);
}
/* protocol/host delimiter */
i=strstr(url,"://")-url+3;
/* printf("%d\n",i); */

if(strchr(url+i,'/')==NULL) {
fprintf(stderr,"\nInvalid URL syntax - hostname don't ends with '/'.\n");
exit(2);
}
if(proxyhost==NULL)
{
/* get port from hostname */
if(index(url+i,':')!=NULL &&
index(url+i,':')<index(url+i,'/'))
{
strncpy(host,url+i,strchr(url+i,':')-url-i);
bzero(tmp,10);
strncpy(tmp,index(url+i,':')+1,strchr(url+i,'/')-index(url+i,':')-1);
/* printf("tmp=%s\n",tmp); */
proxyport=atoi(tmp);
if(proxyport==0) proxyport=80;
} else
{
strncpy(host,url+i,strcspn(url+i,"/"));
}
// printf("Host=%s\n",host);
strcat(request+strlen(request),url+i+strcspn(url+i,"/"));
} else
{
// printf("ProxyHost=%s\nProxyPort=%d\n",proxyhost,proxyport);
strcat(request,url);
}
if(http10==1)
strcat(request," HTTP/1.0");
else if (http10==2)
strcat(request," HTTP/1.1");
strcat(request,"\r\n");
if(http10>0)
strcat(request,"User-Agent: WebBench "PROGRAM_VERSION"\r\n");
if(proxyhost==NULL && http10>0)
{
strcat(request,"Host: ");
strcat(request,host);
strcat(request,"\r\n");
}
if(force_reload && proxyhost!=NULL)
{
strcat(request,"Pragma: no-cache\r\n");
}
if(http10>1)
strcat(request,"Connection: close\r\n");
/* add empty line at end */
if(http10>0) strcat(request,"\r\n");
// printf("Req=%s\n",request);
}

/* vraci system rc error kod */
static int bench(void)
{
int i,j,k;
pid_t pid=0;
FILE *f;

/* check avaibility of target server */
i=Socket(proxyhost==NULL?host:proxyhost,proxyport);
if(i<0) {
fprintf(stderr,"\nConnect to server failed. Aborting benchmark.\n");
return 1;
}
close(i);
/* create pipe */
if(pipe(mypipe))
{
perror("pipe failed.");
return 3;
}

/* not needed, since we have alarm() in childrens */
/* wait 4 next system clock tick */
/*
cas=time(NULL);
while(time(NULL)==cas)
sched_yield();
*/

/* fork childs */
for(i=0;i<clients;i++)
{
pid=fork();
if(pid <= (pid_t) 0)
{
/* child process or error*/
sleep(1); /* make childs faster */
break;
}
}

if( pid< (pid_t) 0)
{
fprintf(stderr,"problems forking worker no. %d\n",i);
perror("fork failed.");
return 3;
}

if(pid== (pid_t) 0)
{
/* I am a child */
if(proxyhost==NULL)
benchcore(host,proxyport,request);
else
benchcore(proxyhost,proxyport,request);

/* write results to pipe */
f=fdopen(mypipe[1],"w");
if(f==NULL)
{
perror("open pipe for writing failed.");
return 3;
}
/* fprintf(stderr,"Child - %d %d\n",speed,failed); */
fprintf(f,"%d %d %d\n",speed,failed,bytes);
fclose(f);
return 0;
} else
{
f=fdopen(mypipe[0],"r");
if(f==NULL)
{
perror("open pipe for reading failed.");
return 3;
}
setvbuf(f,NULL,_IONBF,0);
speed=0;
failed=0;
bytes=0;

while(1)
{
pid=fscanf(f,"%d %d %d",&i,&j,&k);
if(pid<2)
{
fprintf(stderr,"Some of our childrens died.\n");
break;
}
speed+=i;
failed+=j;
bytes+=k;
/* fprintf(stderr,"*Knock* %d %d read=%d\n",speed,failed,pid); */
if(--clients==0) break;
}
fclose(f);

printf("\nSpeed=%d pages/min, %d bytes/sec.\nRequests: %d susceed, %d failed.\n",
(int)((speed+failed)/(benchtime/60.0f)),
(int)(bytes/(float)benchtime),
speed,
failed);
}
return i;
}

void benchcore(const char *host,const int port,const char *req)
{
int rlen;
char buf[1500];
int s,i;
struct sigaction sa;

/* setup alarm signal handler */
sa.sa_handler=alarm_handler;
sa.sa_flags=0;
if(sigaction(SIGALRM,&sa,NULL))
exit(3);
alarm(benchtime);

rlen=strlen(req);
nexttry:while(1)
{
if(timerexpired)
{
if(failed>0)
{
/* fprintf(stderr,"Correcting failed by signal\n"); */
failed--;
}
return;
}
s=Socket(host,port);
if(s<0) { failed++;continue;}
if(rlen!=write(s,req,rlen)) {failed++;close(s);continue;}
if(http10==0)
if(shutdown(s,1)) { failed++;close(s);continue;}
if(force==0)
{
/* read all available data from socket */
while(1)
{
if(timerexpired) break;
i=read(s,buf,1500);
/* fprintf(stderr,"%d\n",i); */
if(i<0)
{
failed++;
close(s);
goto nexttry;
}
else
if(i==0) break;
else
bytes+=i;
}
}
if(close(s)) {failed++;continue;}
speed++;
}
}

编译:
chunli@Linux:~$ gcc webbench.c -Wall

压力测试:
chunli@Linux:~$ ./a.out -c 999 -t 10  "http://www.baidu.com/"
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://www.baidu.com/ 999 clients, running 10 sec.

Speed=138 pages/min, 900685 bytes/sec.
Requests: 19 susceed, 4 failed.
chunli@Linux:~$

可以看到打开了很多进程:
chunli     5512  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5513  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5514  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5515  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5516  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5517  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5518  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5519  0.0  0.0  12724  1660 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5520  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5521  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5522  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5523  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5524  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5525  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5526  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5527  0.0  0.0  12724  1468 pts/1    S+   18:11   0:00 ./a.out -c 999 -t 10 http://www.baidu.com/ chunli     5530  0.0  0.0  22644  2556 pts/8    R+   18:11   0:00 ps aux
chunli@Linux:~/ace$ ps aux