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
|
// Copyright (c) 2012 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 "remoting/host/host_port_allocator.h"
#include "base/bind.h"
#include "base/stl_util.h"
#include "base/string_number_conversions.h"
#include "googleurl/src/gurl.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_request_context_getter.h"
#include "remoting/host/network_settings.h"
#include "third_party/libjingle/source/talk/base/basicpacketsocketfactory.h"
namespace remoting {
namespace {
class HostPortAllocatorSession
: public cricket::HttpPortAllocatorSessionBase {
public:
HostPortAllocatorSession(
cricket::HttpPortAllocatorBase* allocator,
int component,
const std::string& ice_username_fragment,
const std::string& ice_password,
const std::vector<talk_base::SocketAddress>& stun_hosts,
const std::vector<std::string>& relay_hosts,
const std::string& relay,
const scoped_refptr<net::URLRequestContextGetter>& url_context);
virtual ~HostPortAllocatorSession();
// cricket::HttpPortAllocatorBase overrides.
virtual void ConfigReady(cricket::PortConfiguration* config) OVERRIDE;
virtual void SendSessionRequest(const std::string& host, int port) OVERRIDE;
private:
void OnSessionRequestDone(UrlFetcher* url_fetcher,
const net::URLRequestStatus& status,
int response_code,
const std::string& response);
scoped_refptr<net::URLRequestContextGetter> url_context_;
std::set<UrlFetcher*> url_fetchers_;
DISALLOW_COPY_AND_ASSIGN(HostPortAllocatorSession);
};
HostPortAllocatorSession::HostPortAllocatorSession(
cricket::HttpPortAllocatorBase* allocator,
int component,
const std::string& ice_username_fragment,
const std::string& ice_password,
const std::vector<talk_base::SocketAddress>& stun_hosts,
const std::vector<std::string>& relay_hosts,
const std::string& relay,
const scoped_refptr<net::URLRequestContextGetter>& url_context)
: HttpPortAllocatorSessionBase(
allocator, component, ice_username_fragment, ice_password,
stun_hosts, relay_hosts, relay, ""),
url_context_(url_context) {
}
HostPortAllocatorSession::~HostPortAllocatorSession() {
STLDeleteElements(&url_fetchers_);
}
void HostPortAllocatorSession::ConfigReady(cricket::PortConfiguration* config) {
// Filter out non-UDP relay ports, so that we don't try using TCP.
for (cricket::PortConfiguration::RelayList::iterator relay =
config->relays.begin(); relay != config->relays.end(); ++relay) {
cricket::PortConfiguration::PortList filtered_ports;
for (cricket::PortConfiguration::PortList::iterator port =
relay->ports.begin(); port != relay->ports.end(); ++port) {
if (port->proto == cricket::PROTO_UDP) {
filtered_ports.push_back(*port);
}
}
relay->ports = filtered_ports;
}
cricket::BasicPortAllocatorSession::ConfigReady(config);
}
void HostPortAllocatorSession::SendSessionRequest(const std::string& host,
int port) {
GURL url("https://" + host + ":" + base::IntToString(port) +
GetSessionRequestUrl() + "&sn=1");
scoped_ptr<UrlFetcher> url_fetcher(new UrlFetcher(url, UrlFetcher::GET));
url_fetcher->SetRequestContext(url_context_);
url_fetcher->SetHeader("X-Talk-Google-Relay-Auth", relay_token());
url_fetcher->SetHeader("X-Google-Relay-Auth", relay_token());
url_fetcher->SetHeader("X-Stream-Type", "chromoting");
url_fetcher->Start(base::Bind(&HostPortAllocatorSession::OnSessionRequestDone,
base::Unretained(this), url_fetcher.get()));
url_fetchers_.insert(url_fetcher.release());
}
void HostPortAllocatorSession::OnSessionRequestDone(
UrlFetcher* url_fetcher,
const net::URLRequestStatus& status,
int response_code,
const std::string& response) {
url_fetchers_.erase(url_fetcher);
delete url_fetcher;
if (response_code != net::HTTP_OK) {
LOG(WARNING) << "Received error when allocating relay session: "
<< response_code;
TryCreateRelaySession();
return;
}
ReceiveSessionResponse(response);
}
} // namespace
// static
scoped_ptr<HostPortAllocator> HostPortAllocator::Create(
const scoped_refptr<net::URLRequestContextGetter>& url_context,
const NetworkSettings& network_settings) {
scoped_ptr<talk_base::NetworkManager> network_manager(
new talk_base::BasicNetworkManager());
scoped_ptr<talk_base::PacketSocketFactory> socket_factory(
new talk_base::BasicPacketSocketFactory());
scoped_ptr<HostPortAllocator> result(
new HostPortAllocator(url_context, network_manager.Pass(),
socket_factory.Pass()));
// We always use PseudoTcp to provide a reliable channel. It
// provides poor performance when combined with TCP-based transport,
// so we have to disable TCP ports.
int flags = cricket::PORTALLOCATOR_DISABLE_TCP;
if (network_settings.nat_traversal_mode !=
NetworkSettings::NAT_TRAVERSAL_ENABLED) {
flags |= cricket::PORTALLOCATOR_DISABLE_STUN |
cricket::PORTALLOCATOR_DISABLE_RELAY;
}
result->set_flags(flags);
result->SetPortRange(network_settings.min_port,
network_settings.max_port);
return result.Pass();
}
HostPortAllocator::HostPortAllocator(
const scoped_refptr<net::URLRequestContextGetter>& url_context,
scoped_ptr<talk_base::NetworkManager> network_manager,
scoped_ptr<talk_base::PacketSocketFactory> socket_factory)
: HttpPortAllocatorBase(network_manager.get(), socket_factory.get(), ""),
url_context_(url_context),
network_manager_(network_manager.Pass()),
socket_factory_(socket_factory.Pass()) {
}
HostPortAllocator::~HostPortAllocator() {
}
cricket::PortAllocatorSession* HostPortAllocator::CreateSessionInternal(
int component,
const std::string& ice_username_fragment,
const std::string& ice_password) {
return new HostPortAllocatorSession(
this, component, ice_username_fragment, ice_password,
stun_hosts(), relay_hosts(), relay_token(), url_context_);
}
} // namespace remoting
|
