blob: 0b24341cabdf605843f903a300b2845f4c5dcb65 [file] [log] [blame]
// 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/client/plugin/pepper_port_allocator.h"
#include <stdint.h>
#include "base/bind.h"
#include "base/macros.h"
#include "base/strings/string_number_conversions.h"
#include "net/base/net_util.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/cpp/url_loader.h"
#include "ppapi/cpp/url_request_info.h"
#include "ppapi/cpp/url_response_info.h"
#include "ppapi/utility/completion_callback_factory.h"
#include "remoting/client/plugin/pepper_network_manager.h"
#include "remoting/client/plugin/pepper_packet_socket_factory.h"
#include "remoting/client/plugin/pepper_util.h"
namespace remoting {
namespace {
// Read buffer we allocate per read when reading response from
// URLLoader. Normally the response from URL loader is smaller than 1kB.
const int kReadSize = 1024;
class PepperPortAllocatorSession
: public cricket::HttpPortAllocatorSessionBase {
public:
PepperPortAllocatorSession(
cricket::HttpPortAllocatorBase* allocator,
const std::string& content_name,
int component,
const std::string& ice_username_fragment,
const std::string& ice_password,
const std::vector<rtc::SocketAddress>& stun_hosts,
const std::vector<std::string>& relay_hosts,
const std::string& relay_token,
const pp::InstanceHandle& instance);
~PepperPortAllocatorSession() override;
// cricket::HttpPortAllocatorBase overrides.
void ConfigReady(cricket::PortConfiguration* config) override;
void GetPortConfigurations() override;
void SendSessionRequest(const std::string& host, int port) override;
private:
void OnUrlOpened(int32_t result);
void ReadResponseBody();
void OnResponseBodyRead(int32_t result);
pp::InstanceHandle instance_;
cricket::ServerAddresses stun_hosts_;
scoped_ptr<pp::URLLoader> relay_url_loader_;
std::vector<char> relay_response_body_;
bool relay_response_received_;
pp::CompletionCallbackFactory<PepperPortAllocatorSession> callback_factory_;
DISALLOW_COPY_AND_ASSIGN(PepperPortAllocatorSession);
};
PepperPortAllocatorSession::PepperPortAllocatorSession(
cricket::HttpPortAllocatorBase* allocator,
const std::string& content_name,
int component,
const std::string& ice_username_fragment,
const std::string& ice_password,
const std::vector<rtc::SocketAddress>& stun_hosts,
const std::vector<std::string>& relay_hosts,
const std::string& relay_token,
const pp::InstanceHandle& instance)
: HttpPortAllocatorSessionBase(allocator,
content_name,
component,
ice_username_fragment,
ice_password,
stun_hosts,
relay_hosts,
relay_token,
std::string()),
instance_(instance),
stun_hosts_(stun_hosts.begin(), stun_hosts.end()),
relay_response_received_(false),
callback_factory_(this) {
}
PepperPortAllocatorSession::~PepperPortAllocatorSession() {
}
void PepperPortAllocatorSession::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::PortList filtered_ports;
for (cricket::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 PepperPortAllocatorSession::GetPortConfigurations() {
// Add a configuration without relay response first so local and STUN
// candidates can be allocated without waiting for the relay response.
ConfigReady(new cricket::PortConfiguration(
stun_hosts_, std::string(), std::string()));
TryCreateRelaySession();
}
void PepperPortAllocatorSession::SendSessionRequest(
const std::string& host,
int port) {
relay_url_loader_.reset(new pp::URLLoader(instance_));
pp::URLRequestInfo request_info(instance_);
std::string url = "https://" + host + ":" + base::IntToString(port) +
GetSessionRequestUrl() + "&sn=1";
request_info.SetURL(url);
request_info.SetMethod("GET");
std::stringstream headers;
headers << "X-Talk-Google-Relay-Auth: " << relay_token() << "\n\r";
headers << "X-Google-Relay-Auth: " << relay_token() << "\n\r";
headers << "X-Stream-Type: " << "chromoting" << "\n\r";
request_info.SetHeaders(headers.str());
pp::CompletionCallback callback =
callback_factory_.NewCallback(&PepperPortAllocatorSession::OnUrlOpened);
int result = relay_url_loader_->Open(request_info, callback);
DCHECK_EQ(result, PP_OK_COMPLETIONPENDING);
}
void PepperPortAllocatorSession::OnUrlOpened(int32_t result) {
if (result == PP_ERROR_ABORTED) {
return;
}
if (result < 0) {
LOG(WARNING) << "URLLoader failed: " << result;
// Retry creating session.
TryCreateRelaySession();
return;
}
pp::URLResponseInfo response = relay_url_loader_->GetResponseInfo();
DCHECK(!response.is_null());
if (response.GetStatusCode() != 200) {
LOG(WARNING) << "Received HTTP status code " << response.GetStatusCode();
// Retry creating session.
TryCreateRelaySession();
return;
}
relay_response_body_.clear();
ReadResponseBody();
}
void PepperPortAllocatorSession::ReadResponseBody() {
int pos = relay_response_body_.size();
relay_response_body_.resize(pos + kReadSize);
pp::CompletionCallback callback = callback_factory_.NewCallback(
&PepperPortAllocatorSession::OnResponseBodyRead);
int result = relay_url_loader_->ReadResponseBody(&relay_response_body_[pos],
kReadSize,
callback);
DCHECK_EQ(result, PP_OK_COMPLETIONPENDING);
}
void PepperPortAllocatorSession::OnResponseBodyRead(int32_t result) {
if (result == PP_ERROR_ABORTED) {
return;
}
if (result < 0) {
LOG(WARNING) << "Failed to read HTTP response body when "
"creating relay session: " << result;
// Retry creating session.
TryCreateRelaySession();
return;
}
// Resize the buffer in case we've read less than was requested.
CHECK_LE(result, kReadSize);
CHECK_GE(static_cast<int>(relay_response_body_.size()), kReadSize);
relay_response_body_.resize(relay_response_body_.size() - kReadSize + result);
if (result == 0) {
relay_response_received_ = true;
ReceiveSessionResponse(std::string(relay_response_body_.begin(),
relay_response_body_.end()));
return;
}
ReadResponseBody();
}
} // namespace
// static
scoped_ptr<PepperPortAllocator> PepperPortAllocator::Create(
const pp::InstanceHandle& instance) {
scoped_ptr<rtc::NetworkManager> network_manager(
new PepperNetworkManager(instance));
scoped_ptr<rtc::PacketSocketFactory> socket_factory(
new PepperPacketSocketFactory(instance));
scoped_ptr<PepperPortAllocator> result(new PepperPortAllocator(
instance, network_manager.Pass(), socket_factory.Pass()));
return result.Pass();
}
PepperPortAllocator::PepperPortAllocator(
const pp::InstanceHandle& instance,
scoped_ptr<rtc::NetworkManager> network_manager,
scoped_ptr<rtc::PacketSocketFactory> socket_factory)
: HttpPortAllocatorBase(network_manager.get(),
socket_factory.get(),
std::string()),
instance_(instance),
network_manager_(network_manager.Pass()),
socket_factory_(socket_factory.Pass()) {
}
PepperPortAllocator::~PepperPortAllocator() {}
cricket::PortAllocatorSession* PepperPortAllocator::CreateSessionInternal(
const std::string& content_name,
int component,
const std::string& ice_username_fragment,
const std::string& ice_password) {
return new PepperPortAllocatorSession(
this, content_name, component, ice_username_fragment, ice_password,
stun_hosts(), relay_hosts(), relay_token(), instance_);
}
PepperPortAllocatorFactory::PepperPortAllocatorFactory(
const pp::InstanceHandle& instance)
: instance_(instance) {}
PepperPortAllocatorFactory::~PepperPortAllocatorFactory() {}
scoped_ptr<cricket::HttpPortAllocatorBase>
PepperPortAllocatorFactory::CreatePortAllocator() {
return PepperPortAllocator::Create(instance_);
}
} // namespace remoting