Added out-of-process support for server sockets.

ppapi/proxy/ppb_tcp_server_socket_private_proxy.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 "ppapi/proxy/ppb_tcp_server_socket_private_proxy.h"
+
+#include <cstddef>
+#include <map>
+
+#include "base/logging.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_globals.h"
+#include "ppapi/proxy/plugin_proxy_delegate.h"
+#include "ppapi/proxy/plugin_resource_tracker.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/proxy/ppb_tcp_socket_private_proxy.h"
+#include "ppapi/shared_impl/private/ppb_tcp_server_socket_shared.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/thunk/thunk.h"
+
+namespace ppapi {
+namespace proxy {
+
+namespace {
+
+typedef std::map<uint32, PPB_TCPServerSocket_Shared*> IDToServerSocketMap;
+IDToServerSocketMap* g_id_to_uninitialized_server_socket = NULL;

[brettw, 2012/03/12 06:27:21]

You shouldn't need this uninitialized socket ID map. I think all we need to do
is send the HostResource (just call host_resource() on your object) to the
browser and have it echo that back instead of this ID. Then when you want to get
back to the object, just do
EnterProxyFromHostResource<PPB_TCPServerSocket_API> enter;
if (enter.succeeded())
  static_cast<TCPServerSocket*>(enter.object())->OnAcceptCompleted();
when you get the message back from the browser (the static cast is OK here since
you're the one implementing this API so you know if the enter succeeded for that
API, the object is yours).

[ygorshenin1, 2012/03/12 12:59:38]

In the PROXY case, host_resource().host_resource() is always zero (because
HostResource is created by HostResource::MakeInstanceOnly, so the resource part
of HostResource instance is zero). Therefore, enter will always fail. Maybe
instead of passing host_resource() to browser (and receiving it back as echo) we
should pass pp_resource()? And then use thunk::EnterResource?

On 2012/03/12 06:27:21, brettw wrote:

[brettw, 2012/03/12 15:22:49]

Oh, sorry. You should just do plain EnterResource<> wirth the resource ID from
that host resource.

[ygorshenin1, 2012/03/13 11:33:17]

Done.

+IDToServerSocketMap* g_id_to_initialized_server_socket = NULL;
+
+class TCPServerSocket : public PPB_TCPServerSocket_Shared {
+ public:
+  TCPServerSocket(const HostResource& resource, uint32 plugin_dispatcher_id);
+  virtual ~TCPServerSocket();
+
+  virtual void OnAcceptCompleted(
+      bool succeeded,
+      uint32 tcp_socket_id,
+      const PP_NetAddress_Private& local_addr,
+      const PP_NetAddress_Private& remote_addr) OVERRIDE;
+
+  virtual void SendListen(uint32 temp_socket_id,
+                          const PP_NetAddress_Private& addr,
+                          int32_t backlog) OVERRIDE;
+  virtual void SendAccept() OVERRIDE;
+  virtual void SendStopListening() OVERRIDE;
+
+ private:
+  void SendToBrowser(IPC::Message* msg);
+
+  uint32 plugin_dispatcher_id_;
+
+  DISALLOW_COPY_AND_ASSIGN(TCPServerSocket);
+};
+
+TCPServerSocket::TCPServerSocket(const HostResource& resource,
+                                 uint32 plugin_dispatcher_id)
+    : PPB_TCPServerSocket_Shared(resource),
+      plugin_dispatcher_id_(plugin_dispatcher_id) {
+  if (!g_id_to_uninitialized_server_socket)
+    g_id_to_uninitialized_server_socket = new IDToServerSocketMap();
+  if (!g_id_to_initialized_server_socket)
+    g_id_to_initialized_server_socket = new IDToServerSocketMap();
+}
+
+TCPServerSocket::~TCPServerSocket() {
+  StopListening();
+}
+
+void TCPServerSocket::OnAcceptCompleted(
+    bool succeeded,
+    uint32 tcp_socket_id,
+    const PP_NetAddress_Private& local_addr,
+    const PP_NetAddress_Private& remote_addr) {
+  if (!::ppapi::TrackedCallback::IsPending(accept_callback_) ||
+      !tcp_socket_buffer_) {
+    NOTREACHED();
+    return;
+  }
+
+  if (succeeded) {
+    *tcp_socket_buffer_ =
+        PPB_TCPSocket_Private_Proxy::CreateProxyResourceForConnectedSocket(
+            pp_instance(),
+            tcp_socket_id,
+            local_addr,
+            remote_addr);
+  }
+  tcp_socket_buffer_ = NULL;
+
+  ::ppapi::TrackedCallback::ClearAndRun(&accept_callback_,

[brettw, 2012/03/12 06:27:21]

You shouldn't need the ::ppapi:: anywhere in this file.

[ygorshenin1, 2012/03/13 11:33:17]

Done.

+                                        succeeded ? PP_OK : PP_ERROR_FAILED);
+}
+
+void TCPServerSocket::SendListen(uint32 temp_socket_id,
+                                 const PP_NetAddress_Private& addr,
+                                 int32_t backlog) {
+  if (!g_id_to_uninitialized_server_socket ||
+      !g_id_to_initialized_server_socket) {
+    NOTREACHED();
+    return;
+  }
+
+  (*g_id_to_uninitialized_server_socket)[temp_socket_id] = this;
+  SendToBrowser(new PpapiHostMsg_PPBTCPServerSocket_Listen(
+      API_ID_PPB_TCPSERVERSOCKET_PRIVATE,
+      plugin_dispatcher_id_,
+      temp_socket_id,
+      addr,
+      backlog));
+}
+
+void TCPServerSocket::SendAccept() {
+  SendToBrowser(new PpapiHostMsg_PPBTCPServerSocket_Accept(
+      API_ID_PPB_TCPSOCKET_PRIVATE,
+      real_socket_id_));
+}
+
+void TCPServerSocket::SendStopListening() {
+  if (!g_id_to_uninitialized_server_socket ||
+      !g_id_to_initialized_server_socket) {
+    NOTREACHED();
+    return;
+  }
+
+  if (real_socket_id_ == 0) {
+    g_id_to_uninitialized_server_socket->erase(temp_socket_id_);
+  } else {
+    g_id_to_initialized_server_socket->erase(real_socket_id_);
+    SendToBrowser(new PpapiHostMsg_PPBTCPServerSocket_Destroy(real_socket_id_));
+  }
+}
+
+void TCPServerSocket::SendToBrowser(IPC::Message* msg) {
+  PluginGlobals::Get()->plugin_proxy_delegate()->SendToBrowser(msg);
+}
+
+}  // namespace
+
+//------------------------------------------------------------------------------
+
+PPB_TCPServerSocket_Private_Proxy::PPB_TCPServerSocket_Private_Proxy(
+    Dispatcher* dispatcher)
+    : InterfaceProxy(dispatcher) {
+}
+
+PPB_TCPServerSocket_Private_Proxy::~PPB_TCPServerSocket_Private_Proxy() {
+}
+
+PP_Resource PPB_TCPServerSocket_Private_Proxy::CreateProxyResource(
+    PP_Instance instance) {
+    PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return 0;
+
+  TCPServerSocket* server_socket =
+      new TCPServerSocket(HostResource::MakeInstanceOnly(instance),
+                          dispatcher->plugin_dispatcher_id());
+  return server_socket->GetReference();
+}
+
+bool PPB_TCPServerSocket_Private_Proxy::OnMessageReceived(
+    const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPB_TCPServerSocket_Private_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBTCPServerSocket_ListenACK, OnMsgListenACK)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBTCPServerSocket_AcceptACK, OnMsgAcceptACK)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void PPB_TCPServerSocket_Private_Proxy::OnMsgListenACK(
+    uint32 plugin_dispatcher_id,
+    uint32 real_socket_id,
+    uint32 temp_socket_id,
+    int32_t status) {

[brettw, 2012/03/12 06:27:21]

I think you only need g_id_to_initialized_server_socket map between here and
OnMsgAcceptACK, so I think you can make it a member of the proxy object instead
of a global.

The only tricky bit is to ensure that the object is removed from the map when
it's destroyed. I think you can do 
static_cast<PPB_TCPServerSocket_Private_Proxy*>(GetInterfaceProxy(API_ID_PPB_TCPSOCKET_PRIVATE))->ObjectDestroyed(id);

Although the static_cast is a bit annoying, I think this is cleaner than having
the global.

[ygorshenin1, 2012/03/13 11:33:17]

Done.

+  if (!g_id_to_uninitialized_server_socket ||
+      !g_id_to_initialized_server_socket) {
+    NOTREACHED();
+    return;
+  }
+  IDToServerSocketMap::iterator it =
+      g_id_to_uninitialized_server_socket->find(temp_socket_id);
+  if (it == g_id_to_uninitialized_server_socket->end()) {
+    IPC::Message* msg =
+        new PpapiHostMsg_PPBTCPServerSocket_Destroy(real_socket_id);
+    PluginGlobals::Get()->plugin_proxy_delegate()->SendToBrowser(msg);
+  } else {
+    PPB_TCPServerSocket_Shared* server_socket = it->second;
+    g_id_to_uninitialized_server_socket->erase(it);
+
+    if (status == PP_OK)
+      (*g_id_to_initialized_server_socket)[real_socket_id] = server_socket;
+    server_socket->OnListenCompleted(real_socket_id, status);
+  }
+}
+
+void PPB_TCPServerSocket_Private_Proxy::OnMsgAcceptACK(
+    uint32 plugin_dispatcher_id,
+    uint32 real_socket_id,
+    uint32 accepted_socket_id,
+    const PP_NetAddress_Private& local_addr,
+    const PP_NetAddress_Private& remote_addr) {
+  if (!g_id_to_uninitialized_server_socket ||
+      !g_id_to_initialized_server_socket) {
+    NOTREACHED();
+    return;
+  }
+  IDToServerSocketMap::iterator it =
+      g_id_to_initialized_server_socket->find(real_socket_id);
+  if (it != g_id_to_initialized_server_socket->end()) {
+    bool succeeded = accepted_socket_id != 0;
+    it->second->OnAcceptCompleted(succeeded,
+                                  accepted_socket_id,
+                                  local_addr,
+                                  remote_addr);
+  }
+}
+
+}  // namespace proxy
+}  // namespace ppapi