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1 /*
2  * Copyright 2009-2012 Niels Provos and Nick Mathewson
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 4. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  */
27
28 /* for EVUTIL_ERR_CONNECT_RETRIABLE macro */
29 #include "util-internal.h"
30
31 #include <sys/types.h>
32 #ifdef _WIN32
33 #include <winsock2.h>
34 #else
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 # ifdef _XOPEN_SOURCE_EXTENDED
38 #  include <arpa/inet.h>
39 # endif
40 #endif
41 #include <stdlib.h>
42 #include <string.h>
43 #include <errno.h>
44
45 #include "event2/event.h"
46 #include "event2/bufferevent.h"
47 #include "event2/buffer.h"
48 #include "event2/util.h"
49
50 const char *resource = NULL;
51 struct event_base *base = NULL;
52
53 int total_n_handled = 0;
54 int total_n_errors = 0;
55 int total_n_launched = 0;
56 size_t total_n_bytes = 0;
57 struct timeval total_time = {0,0};
58 int n_errors = 0;
59
60 const int PARALLELISM = 200;
61 const int N_REQUESTS = 20000;
62
63 struct request_info {
64         size_t n_read;
65         struct timeval started;
66 };
67
68 static int launch_request(void);
69 static void readcb(struct bufferevent *b, void *arg);
70 static void errorcb(struct bufferevent *b, short what, void *arg);
71
72 static void
73 readcb(struct bufferevent *b, void *arg)
74 {
75         struct request_info *ri = arg;
76         struct evbuffer *input = bufferevent_get_input(b);
77         size_t n = evbuffer_get_length(input);
78
79         ri->n_read += n;
80         evbuffer_drain(input, n);
81 }
82
83 static void
84 errorcb(struct bufferevent *b, short what, void *arg)
85 {
86         struct request_info *ri = arg;
87         struct timeval now, diff;
88         if (what & BEV_EVENT_EOF) {
89                 ++total_n_handled;
90                 total_n_bytes += ri->n_read;
91                 evutil_gettimeofday(&now, NULL);
92                 evutil_timersub(&now, &ri->started, &diff);
93                 evutil_timeradd(&diff, &total_time, &total_time);
94
95                 if (total_n_handled && (total_n_handled%1000)==0)
96                         printf("%d requests done\n",total_n_handled);
97
98                 if (total_n_launched < N_REQUESTS) {
99                         if (launch_request() < 0)
100                                 perror("Can't launch");
101                 }
102         } else {
103                 ++total_n_errors;
104                 perror("Unexpected error");
105         }
106
107         bufferevent_setcb(b, NULL, NULL, NULL, NULL);
108         free(ri);
109         bufferevent_disable(b, EV_READ|EV_WRITE);
110         bufferevent_free(b);
111 }
112
113 static void
114 frob_socket(evutil_socket_t sock)
115 {
116 #ifdef HAVE_SO_LINGER
117         struct linger l;
118 #endif
119         int one = 1;
120         if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void*)&one, sizeof(one))<0)
121                 perror("setsockopt(SO_REUSEADDR)");
122 #ifdef HAVE_SO_LINGER
123         l.l_onoff = 1;
124         l.l_linger = 0;
125         if (setsockopt(sock, SOL_SOCKET, SO_LINGER, (void*)&l, sizeof(l))<0)
126                 perror("setsockopt(SO_LINGER)");
127 #endif
128 }
129
130 static int
131 launch_request(void)
132 {
133         evutil_socket_t sock;
134         struct sockaddr_in sin;
135         struct bufferevent *b;
136
137         struct request_info *ri;
138
139         memset(&sin, 0, sizeof(sin));
140
141         ++total_n_launched;
142
143         sin.sin_family = AF_INET;
144         sin.sin_addr.s_addr = htonl(0x7f000001);
145         sin.sin_port = htons(8080);
146         if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
147                 return -1;
148         if (evutil_make_socket_nonblocking(sock) < 0) {
149                 evutil_closesocket(sock);
150                 return -1;
151         }
152         frob_socket(sock);
153         if (connect(sock, (struct sockaddr*)&sin, sizeof(sin)) < 0) {
154                 int e = errno;
155                 if (! EVUTIL_ERR_CONNECT_RETRIABLE(e)) {
156                         evutil_closesocket(sock);
157                         return -1;
158                 }
159         }
160
161         ri = malloc(sizeof(*ri));
162         if (ri == NULL) {
163                 printf("Unable to allocate memory in launch_request()\n");
164                 return -1;
165         }
166         ri->n_read = 0;
167         evutil_gettimeofday(&ri->started, NULL);
168
169         b = bufferevent_socket_new(base, sock, BEV_OPT_CLOSE_ON_FREE);
170
171         bufferevent_setcb(b, readcb, NULL, errorcb, ri);
172         bufferevent_enable(b, EV_READ|EV_WRITE);
173
174         evbuffer_add_printf(bufferevent_get_output(b),
175             "GET %s HTTP/1.0\r\n\r\n", resource);
176
177         return 0;
178 }
179
180
181 int
182 main(int argc, char **argv)
183 {
184         int i;
185         struct timeval start, end, total;
186         long long usec;
187         double throughput;
188         resource = "/ref";
189
190         setvbuf(stdout, NULL, _IONBF, 0);
191
192         base = event_base_new();
193
194         for (i=0; i < PARALLELISM; ++i) {
195                 if (launch_request() < 0)
196                         perror("launch");
197         }
198
199         evutil_gettimeofday(&start, NULL);
200
201         event_base_dispatch(base);
202
203         evutil_gettimeofday(&end, NULL);
204         evutil_timersub(&end, &start, &total);
205         usec = total_time.tv_sec * (long long)1000000 + total_time.tv_usec;
206
207         if (!total_n_handled) {
208                 puts("Nothing worked.  You probably did something dumb.");
209                 return 0;
210         }
211
212
213         throughput = total_n_handled /
214             (total.tv_sec+ ((double)total.tv_usec)/1000000.0);
215
216 #ifdef _WIN32
217 #define I64_FMT "%I64d"
218 #define I64_TYP __int64
219 #else
220 #define I64_FMT "%lld"
221 #define I64_TYP long long int
222 #endif
223
224         printf("\n%d requests in %d.%06d sec. (%.2f throughput)\n"
225             "Each took about %.02f msec latency\n"
226             I64_FMT "bytes read. %d errors.\n",
227             total_n_handled,
228             (int)total.tv_sec, (int)total.tv_usec,
229             throughput,
230             (double)(usec/1000) / total_n_handled,
231             (I64_TYP)total_n_bytes, n_errors);
232
233         return 0;
234 }