Reland of landing: Implement RTCConfiguration.iceCandidatePoolSize.

webrtc/p2p/base/fakeportallocator.h

Index: webrtc/p2p/base/fakeportallocator.h
diff --git a/webrtc/p2p/base/fakeportallocator.h b/webrtc/p2p/base/fakeportallocator.h
new file mode 100644
index 0000000000000000000000000000000000000000..b125dfd80e90b3bc23b91a5a8b12850665ffc049
--- /dev/null
+++ b/webrtc/p2p/base/fakeportallocator.h
@@ -0,0 +1,220 @@
+/*
+ *  Copyright 2010 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_P2P_BASE_FAKEPORTALLOCATOR_H_
+#define WEBRTC_P2P_BASE_FAKEPORTALLOCATOR_H_
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "webrtc/p2p/base/basicpacketsocketfactory.h"
+#include "webrtc/p2p/base/portallocator.h"
+#include "webrtc/p2p/base/udpport.h"
+#include "webrtc/base/scoped_ptr.h"
+
+namespace rtc {
+class SocketFactory;
+class Thread;
+}
+
+namespace cricket {
+
+class TestUDPPort : public UDPPort {
+ public:
+  static TestUDPPort* Create(rtc::Thread* thread,
+                             rtc::PacketSocketFactory* factory,
+                             rtc::Network* network,
+                             const rtc::IPAddress& ip,
+                             uint16_t min_port,
+                             uint16_t max_port,
+                             const std::string& username,
+                             const std::string& password,
+                             const std::string& origin,
+                             bool emit_localhost_for_anyaddress) {
+    TestUDPPort* port = new TestUDPPort(thread, factory, network, ip, min_port,
+                                        max_port, username, password, origin,
+                                        emit_localhost_for_anyaddress);
+    if (!port->Init()) {
+      delete port;
+      port = nullptr;
+    }
+    return port;
+  }
+  void SendBindingResponse(StunMessage* request,
+                           const rtc::SocketAddress& addr) override {
+    UDPPort::SendBindingResponse(request, addr);
+    sent_binding_response_ = true;
+  }
+  bool sent_binding_response() { return sent_binding_response_; }
+  void set_sent_binding_response(bool response) {
+    sent_binding_response_ = response;
+  }
+
+ protected:
+  TestUDPPort(rtc::Thread* thread,
+              rtc::PacketSocketFactory* factory,
+              rtc::Network* network,
+              const rtc::IPAddress& ip,
+              uint16_t min_port,
+              uint16_t max_port,
+              const std::string& username,
+              const std::string& password,
+              const std::string& origin,
+              bool emit_localhost_for_anyaddress)
+      : UDPPort(thread,
+                factory,
+                network,
+                ip,
+                min_port,
+                max_port,
+                username,
+                password,
+                origin,
+                emit_localhost_for_anyaddress) {}
+
+  bool sent_binding_response_ = false;
+};
+
+class FakePortAllocatorSession : public PortAllocatorSession {
+ public:
+  FakePortAllocatorSession(PortAllocator* allocator,
+                           rtc::Thread* worker_thread,
+                           rtc::PacketSocketFactory* factory,
+                           const std::string& content_name,
+                           int component,
+                           const std::string& ice_ufrag,
+                           const std::string& ice_pwd)
+      : PortAllocatorSession(content_name,
+                             component,
+                             ice_ufrag,
+                             ice_pwd,
+                             allocator->flags()),
+        worker_thread_(worker_thread),
+        factory_(factory),
+        network_("network", "unittest", rtc::IPAddress(INADDR_LOOPBACK), 8),
+        port_(),
+        running_(false),
+        port_config_count_(0),
+        stun_servers_(allocator->stun_servers()),
+        turn_servers_(allocator->turn_servers()),
+        candidate_filter_(allocator->candidate_filter()) {
+    network_.AddIP(rtc::IPAddress(INADDR_LOOPBACK));
+  }
+
+  void StartGettingPorts() override {
+    if (!port_) {
+      port_.reset(TestUDPPort::Create(worker_thread_, factory_, &network_,
+                                      network_.GetBestIP(), 0, 0, username(),
+                                      password(), std::string(), false));
+      AddPort(port_.get());
+    }
+    ++port_config_count_;
+    running_ = true;
+  }
+
+  void StopGettingPorts() override { running_ = false; }
+  bool IsGettingPorts() override { return running_; }
+  void ClearGettingPorts() override {}
+  std::vector<PortInterface*> ReadyPorts() const override {
+    return ready_ports_;
+  }
+  std::vector<Candidate> ReadyCandidates() const override {
+    return candidates_;
+  }
+  bool CandidatesAllocationDone() const override { return allocation_done_; }
+
+  int port_config_count() { return port_config_count_; }
+
+  const ServerAddresses& stun_servers() const { return stun_servers_; }
+
+  const std::vector<RelayServerConfig>& turn_servers() const {
+    return turn_servers_;
+  }
+
+  uint32_t candidate_filter() const { return candidate_filter_; }
+
+  void AddPort(cricket::Port* port) {
+    port->set_component(component());
+    port->set_generation(generation());
+    port->SignalPortComplete.connect(this,
+                                     &FakePortAllocatorSession::OnPortComplete);
+    port->PrepareAddress();
+    ready_ports_.push_back(port);
+    SignalPortReady(this, port);
+  }
+  void OnPortComplete(cricket::Port* port) {
+    const std::vector<Candidate>& candidates = port->Candidates();
+    candidates_.insert(candidates_.end(), candidates.begin(), candidates.end());
+    SignalCandidatesReady(this, candidates);
+
+    allocation_done_ = true;
+    SignalCandidatesAllocationDone(this);
+  }
+
+  int transport_info_update_count() const {
+    return transport_info_update_count_;
+  }
+
+ protected:
+  void UpdateIceParametersInternal() override {
+    // Since this class is a fake and this method only is overridden for tests,
+    // we don't need to actually update the transport info.
+    ++transport_info_update_count_;
+  }
+
+ private:
+  rtc::Thread* worker_thread_;
+  rtc::PacketSocketFactory* factory_;
+  rtc::Network network_;
+  std::unique_ptr<cricket::Port> port_;
+  bool running_;
+  int port_config_count_;
+  std::vector<Candidate> candidates_;
+  std::vector<PortInterface*> ready_ports_;
+  bool allocation_done_ = false;
+  ServerAddresses stun_servers_;
+  std::vector<RelayServerConfig> turn_servers_;
+  uint32_t candidate_filter_;
+  int transport_info_update_count_ = 0;
+};
+
+class FakePortAllocator : public cricket::PortAllocator {
+ public:
+  FakePortAllocator(rtc::Thread* worker_thread,
+                    rtc::PacketSocketFactory* factory)
+      : worker_thread_(worker_thread), factory_(factory) {
+    if (factory_ == NULL) {
+      owned_factory_.reset(new rtc::BasicPacketSocketFactory(worker_thread_));
+      factory_ = owned_factory_.get();
+    }
+  }
+
+  void SetNetworkIgnoreMask(int network_ignore_mask) override {}
+
+  cricket::PortAllocatorSession* CreateSessionInternal(
+      const std::string& content_name,
+      int component,
+      const std::string& ice_ufrag,
+      const std::string& ice_pwd) override {
+    return new FakePortAllocatorSession(this, worker_thread_, factory_,
+                                        content_name, component, ice_ufrag,
+                                        ice_pwd);
+  }
+
+ private:
+  rtc::Thread* worker_thread_;
+  rtc::PacketSocketFactory* factory_;
+  std::unique_ptr<rtc::BasicPacketSocketFactory> owned_factory_;
+};
+
+}  // namespace cricket
+
+#endif  // WEBRTC_P2P_BASE_FAKEPORTALLOCATOR_H_