Home | History | Annotate | Download | only in test 
      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "remoting/test/fake_network_dispatcher.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/location.h"
      9 #include "base/single_thread_task_runner.h"
     10 #include "net/base/io_buffer.h"
     11 
     12 namespace remoting {
     13 
     14 FakeNetworkDispatcher::FakeNetworkDispatcher()
     15     : allocated_address_(0) {
     16 }
     17 
     18 FakeNetworkDispatcher::~FakeNetworkDispatcher() {
     19   CHECK(nodes_.empty());
     20 }
     21 
     22 rtc::IPAddress FakeNetworkDispatcher::AllocateAddress() {
     23   in6_addr addr;
     24   memset(&addr, 0, sizeof(addr));
     25 
     26   // fc00::/7 is reserved for unique local addresses.
     27   addr.s6_addr[0] = 0xfc;
     28 
     29   // Copy |allocated_address_| to the end of |addr|.
     30   ++allocated_address_;
     31   for (size_t i = 0; i < sizeof(allocated_address_); ++i) {
     32     addr.s6_addr[15 - i] = (allocated_address_ >> (8 * i)) & 0xff;
     33   }
     34 
     35   return rtc::IPAddress(addr);
     36 }
     37 
     38 void FakeNetworkDispatcher::AddNode(Node* node) {
     39   DCHECK(node->GetThread()->BelongsToCurrentThread());
     40 
     41   base::AutoLock auto_lock(nodes_lock_);
     42   DCHECK(nodes_.find(node->GetAddress()) == nodes_.end());
     43   nodes_[node->GetAddress()] = node;
     44 }
     45 
     46 void FakeNetworkDispatcher::RemoveNode(Node* node) {
     47   DCHECK(node->GetThread()->BelongsToCurrentThread());
     48 
     49   base::AutoLock auto_lock(nodes_lock_);
     50   DCHECK(nodes_[node->GetAddress()] == node);
     51   nodes_.erase(node->GetAddress());
     52 }
     53 
     54 void FakeNetworkDispatcher::DeliverPacket(
     55     const rtc::SocketAddress& from,
     56     const rtc::SocketAddress& to,
     57     const scoped_refptr<net::IOBuffer>& data,
     58     int data_size) {
     59   Node* node;
     60   {
     61     base::AutoLock auto_lock(nodes_lock_);
     62 
     63     NodesMap::iterator node_it = nodes_.find(to.ipaddr());
     64     if (node_it == nodes_.end()) {
     65       LOG(ERROR) << "Tried to deliver packet to unknown target: "
     66                  << to.ToString();
     67       return;
     68     }
     69 
     70     node = node_it->second;
     71 
     72     // Check if |node| belongs to a different thread and post a task in that
     73     // case.
     74     scoped_refptr<base::SingleThreadTaskRunner> task_runner = node->GetThread();
     75     if (!task_runner->BelongsToCurrentThread()) {
     76       task_runner->PostTask(FROM_HERE,
     77                             base::Bind(&FakeNetworkDispatcher::DeliverPacket,
     78                                        this, from, to, data, data_size));
     79       return;
     80     }
     81   }
     82 
     83   // Call ReceivePacket() without lock held. It's safe because at this point we
     84   // know that |node| belongs to the current thread.
     85   node->ReceivePacket(from, to, data, data_size);
     86 }
     87 
     88 }  // namespace remoting
     89