1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "build/build_config.h"
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/message_loop.h"
#include "base/metrics/stats_counters.h"
#include "base/singleton.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "net/base/completion_callback.h"
#include "net/base/host_resolver.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/base/ssl_config_service.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_cache.h"
#include "net/http/http_network_layer.h"
#include "net/http/http_request_info.h"
#include "net/http/http_transaction.h"
#include "net/proxy/proxy_service.h"
#include "net/socket/client_socket_factory.h"
void usage(const char* program_name) {
printf("usage: %s --url=<url> [--n=<clients>] [--stats] [--use_cache]\n",
program_name);
exit(1);
}
// Test Driver
class Driver {
public:
Driver()
: clients_(0) {}
void ClientStarted() { clients_++; }
void ClientStopped() {
if (!--clients_) {
MessageLoop::current()->Quit();
}
}
private:
int clients_;
};
// A network client
class Client {
public:
Client(net::HttpTransactionFactory* factory, const std::string& url) :
url_(url),
buffer_(new net::IOBuffer(kBufferSize)),
ALLOW_THIS_IN_INITIALIZER_LIST(
connect_callback_(this, &Client::OnConnectComplete)),
ALLOW_THIS_IN_INITIALIZER_LIST(
read_callback_(this, &Client::OnReadComplete)) {
int rv = factory->CreateTransaction(&transaction_);
DCHECK_EQ(net::OK, rv);
buffer_->AddRef();
driver_->ClientStarted();
request_info_.url = url_;
request_info_.method = "GET";
int state = transaction_->Start(
&request_info_, &connect_callback_, net::BoundNetLog());
DCHECK(state == net::ERR_IO_PENDING);
};
private:
void OnConnectComplete(int result) {
// Do work here.
int state = transaction_->Read(buffer_.get(), kBufferSize, &read_callback_);
if (state == net::ERR_IO_PENDING)
return; // IO has started.
if (state < 0)
return; // ERROR!
OnReadComplete(state);
}
void OnReadComplete(int result) {
if (result == 0) {
OnRequestComplete(result);
return;
}
// Deal with received data here.
static base::StatsCounter bytes_read("FetchClient.bytes_read");
bytes_read.Add(result);
// Issue a read for more data.
int state = transaction_->Read(buffer_.get(), kBufferSize, &read_callback_);
if (state == net::ERR_IO_PENDING)
return; // IO has started.
if (state < 0)
return; // ERROR!
OnReadComplete(state);
}
void OnRequestComplete(int result) {
static base::StatsCounter requests("FetchClient.requests");
requests.Increment();
driver_->ClientStopped();
printf(".");
}
static const int kBufferSize = (16 * 1024);
GURL url_;
net::HttpRequestInfo request_info_;
scoped_ptr<net::HttpTransaction> transaction_;
scoped_refptr<net::IOBuffer> buffer_;
net::CompletionCallbackImpl<Client> connect_callback_;
net::CompletionCallbackImpl<Client> read_callback_;
Singleton<Driver> driver_;
};
int main(int argc, char**argv) {
base::AtExitManager exit;
base::StatsTable table("fetchclient", 50, 1000);
table.set_current(&table);
CommandLine::Init(argc, argv);
const CommandLine& parsed_command_line = *CommandLine::ForCurrentProcess();
std::string url = parsed_command_line.GetSwitchValueASCII("url");
if (!url.length())
usage(argv[0]);
int client_limit = 1;
if (parsed_command_line.HasSwitch("n")) {
base::StringToInt(parsed_command_line.GetSwitchValueASCII("n"),
&client_limit);
}
bool use_cache = parsed_command_line.HasSwitch("use-cache");
// Do work here.
MessageLoop loop(MessageLoop::TYPE_IO);
scoped_ptr<net::HostResolver> host_resolver(
net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
NULL));
scoped_refptr<net::ProxyService> proxy_service(
net::ProxyService::CreateDirect());
scoped_refptr<net::SSLConfigService> ssl_config_service(
net::SSLConfigService::CreateSystemSSLConfigService());
net::HttpTransactionFactory* factory = NULL;
scoped_ptr<net::HttpAuthHandlerFactory> http_auth_handler_factory(
net::HttpAuthHandlerFactory::CreateDefault(host_resolver.get()));
if (use_cache) {
factory = new net::HttpCache(host_resolver.get(), NULL, proxy_service,
ssl_config_service, http_auth_handler_factory.get(), NULL, NULL,
net::HttpCache::DefaultBackend::InMemory(0));
} else {
factory = new net::HttpNetworkLayer(
net::ClientSocketFactory::GetDefaultFactory(),
host_resolver.get(),
NULL /* dnsrr_resolver */,
NULL /* ssl_host_info_factory */,
proxy_service,
ssl_config_service,
http_auth_handler_factory.get(),
NULL,
NULL);
}
{
base::StatsCounterTimer driver_time("FetchClient.total_time");
base::StatsScope<base::StatsCounterTimer> scope(driver_time);
Client** clients = new Client*[client_limit];
for (int i = 0; i < client_limit; i++)
clients[i] = new Client(factory, url);
MessageLoop::current()->Run();
}
// Print Statistics here.
int num_clients = table.GetCounterValue("c:FetchClient.requests");
int test_time = table.GetCounterValue("t:FetchClient.total_time");
int bytes_read = table.GetCounterValue("c:FetchClient.bytes_read");
printf("\n");
printf("Clients : %d\n", num_clients);
printf("Time : %dms\n", test_time);
printf("Bytes Read : %d\n", bytes_read);
if (test_time > 0) {
const char *units = "bps";
double bps = static_cast<float>(bytes_read * 8) /
(static_cast<float>(test_time) / 1000.0);
if (bps > (1024*1024)) {
bps /= (1024*1024);
units = "Mbps";
} else if (bps > 1024) {
bps /= 1024;
units = "Kbps";
}
printf("Bandwidth : %.2f%s\n", bps, units);
}
if (parsed_command_line.HasSwitch("stats")) {
// Dump the stats table.
printf("<stats>\n");
int counter_max = table.GetMaxCounters();
for (int index=0; index < counter_max; index++) {
std::string name(table.GetRowName(index));
if (name.length() > 0) {
int value = table.GetRowValue(index);
printf("%s:\t%d\n", name.c_str(), value);
}
}
printf("</stats>\n");
}
return 0;
}
|
