Remove //net (except for Android test stuff) and sdch

net/dns/dns_socket_pool.cc

-// 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 "net/dns/dns_socket_pool.h"
-
-#include "base/logging.h"
-#include "base/rand_util.h"
-#include "base/stl_util.h"
-#include "net/base/address_list.h"
-#include "net/base/ip_endpoint.h"
-#include "net/base/net_errors.h"
-#include "net/base/rand_callback.h"
-#include "net/socket/client_socket_factory.h"
-#include "net/socket/stream_socket.h"
-#include "net/udp/datagram_client_socket.h"
-
-namespace net {
-
-namespace {
-
-// When we initialize the SocketPool, we allocate kInitialPoolSize sockets.
-// When we allocate a socket, we ensure we have at least kAllocateMinSize
-// sockets to choose from.  Freed sockets are not retained.
-
-// On Windows, we can't request specific (random) ports, since that will
-// trigger firewall prompts, so request default ones, but keep a pile of
-// them.  Everywhere else, request fresh, random ports each time.
-#if defined(OS_WIN)
-const DatagramSocket::BindType kBindType = DatagramSocket::DEFAULT_BIND;
-const unsigned kInitialPoolSize = 256;
-const unsigned kAllocateMinSize = 256;
-#else
-const DatagramSocket::BindType kBindType = DatagramSocket::RANDOM_BIND;
-const unsigned kInitialPoolSize = 0;
-const unsigned kAllocateMinSize = 1;
-#endif
-
-} // namespace
-
-DnsSocketPool::DnsSocketPool(ClientSocketFactory* socket_factory)
-    : socket_factory_(socket_factory),
-      net_log_(NULL),
-      nameservers_(NULL),
-      initialized_(false) {
-}
-
-void DnsSocketPool::InitializeInternal(
-    const std::vector<IPEndPoint>* nameservers,
-    NetLog* net_log) {
-  DCHECK(nameservers);
-  DCHECK(!initialized_);
-
-  net_log_ = net_log;
-  nameservers_ = nameservers;
-  initialized_ = true;
-}
-
-scoped_ptr<StreamSocket> DnsSocketPool::CreateTCPSocket(
-    unsigned server_index,
-    const NetLog::Source& source) {
-  DCHECK_LT(server_index, nameservers_->size());
-
-  return scoped_ptr<StreamSocket>(
-      socket_factory_->CreateTransportClientSocket(
-          AddressList((*nameservers_)[server_index]), net_log_, source));
-}
-
-scoped_ptr<DatagramClientSocket> DnsSocketPool::CreateConnectedSocket(
-    unsigned server_index) {
-  DCHECK_LT(server_index, nameservers_->size());
-
-  scoped_ptr<DatagramClientSocket> socket;
-
-  NetLog::Source no_source;
-  socket = socket_factory_->CreateDatagramClientSocket(
-      kBindType, base::Bind(&base::RandInt), net_log_, no_source);
-
-  if (socket.get()) {
-    int rv = socket->Connect((*nameservers_)[server_index]);
-    if (rv != OK) {
-      VLOG(1) << "Failed to connect socket: " << rv;
-      socket.reset();
-    }
-  } else {
-    LOG(WARNING) << "Failed to create socket.";
-  }
-
-  return socket.Pass();
-}
-
-class NullDnsSocketPool : public DnsSocketPool {
- public:
-  NullDnsSocketPool(ClientSocketFactory* factory)
-     : DnsSocketPool(factory) {
-  }
-
-  void Initialize(const std::vector<IPEndPoint>* nameservers,
-                  NetLog* net_log) override {
-    InitializeInternal(nameservers, net_log);
-  }
-
-  scoped_ptr<DatagramClientSocket> AllocateSocket(
-      unsigned server_index) override {
-    return CreateConnectedSocket(server_index);
-  }
-
-  void FreeSocket(unsigned server_index,
-                  scoped_ptr<DatagramClientSocket> socket) override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(NullDnsSocketPool);
-};
-
-// static
-scoped_ptr<DnsSocketPool> DnsSocketPool::CreateNull(
-    ClientSocketFactory* factory) {
-  return scoped_ptr<DnsSocketPool>(new NullDnsSocketPool(factory));
-}
-
-class DefaultDnsSocketPool : public DnsSocketPool {
- public:
-  DefaultDnsSocketPool(ClientSocketFactory* factory)
-     : DnsSocketPool(factory) {
-  };
-
-  ~DefaultDnsSocketPool() override;
-
-  void Initialize(const std::vector<IPEndPoint>* nameservers,
-                  NetLog* net_log) override;
-
-  scoped_ptr<DatagramClientSocket> AllocateSocket(
-      unsigned server_index) override;
-
-  void FreeSocket(unsigned server_index,
-                  scoped_ptr<DatagramClientSocket> socket) override;
-
- private:
-  void FillPool(unsigned server_index, unsigned size);
-
-  typedef std::vector<DatagramClientSocket*> SocketVector;
-
-  std::vector<SocketVector> pools_;
-
-  DISALLOW_COPY_AND_ASSIGN(DefaultDnsSocketPool);
-};
-
-// static
-scoped_ptr<DnsSocketPool> DnsSocketPool::CreateDefault(
-    ClientSocketFactory* factory) {
-  return scoped_ptr<DnsSocketPool>(new DefaultDnsSocketPool(factory));
-}
-
-void DefaultDnsSocketPool::Initialize(
-    const std::vector<IPEndPoint>* nameservers,
-    NetLog* net_log) {
-  InitializeInternal(nameservers, net_log);
-
-  DCHECK(pools_.empty());
-  const unsigned num_servers = nameservers->size();
-  pools_.resize(num_servers);
-  for (unsigned server_index = 0; server_index < num_servers; ++server_index)
-    FillPool(server_index, kInitialPoolSize);
-}
-
-DefaultDnsSocketPool::~DefaultDnsSocketPool() {
-  unsigned num_servers = pools_.size();
-  for (unsigned server_index = 0; server_index < num_servers; ++server_index) {
-    SocketVector& pool = pools_[server_index];
-    STLDeleteElements(&pool);
-  }
-}
-
-scoped_ptr<DatagramClientSocket> DefaultDnsSocketPool::AllocateSocket(
-    unsigned server_index) {
-  DCHECK_LT(server_index, pools_.size());
-  SocketVector& pool = pools_[server_index];
-
-  FillPool(server_index, kAllocateMinSize);
-  if (pool.size() == 0) {
-    LOG(WARNING) << "No DNS sockets available in pool " << server_index << "!";
-    return scoped_ptr<DatagramClientSocket>();
-  }
-
-  if (pool.size() < kAllocateMinSize) {
-    LOG(WARNING) << "Low DNS port entropy: wanted " << kAllocateMinSize
-                 << " sockets to choose from, but only have " << pool.size()
-                 << " in pool " << server_index << ".";
-  }
-
-  unsigned socket_index = base::RandInt(0, pool.size() - 1);
-  DatagramClientSocket* socket = pool[socket_index];
-  pool[socket_index] = pool.back();
-  pool.pop_back();
-
-  return scoped_ptr<DatagramClientSocket>(socket);
-}
-
-void DefaultDnsSocketPool::FreeSocket(
-    unsigned server_index,
-    scoped_ptr<DatagramClientSocket> socket) {
-  DCHECK_LT(server_index, pools_.size());
-}
-
-void DefaultDnsSocketPool::FillPool(unsigned server_index, unsigned size) {
-  SocketVector& pool = pools_[server_index];
-
-  for (unsigned pool_index = pool.size(); pool_index < size; ++pool_index) {
-    DatagramClientSocket* socket =
-        CreateConnectedSocket(server_index).release();
-    if (!socket)
-      break;
-    pool.push_back(socket);
-  }
-}
-
-} // namespace net