Push API: send and receive IPC messages for registration.

content/browser/push_messaging_message_filter.h

Index: content/browser/push_messaging_message_filter.h
diff --git a/content/browser/push_messaging_message_filter.h b/content/browser/push_messaging_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..3fa658d267eaf7623173443aeb08439f8706e9f7
--- /dev/null
+++ b/content/browser/push_messaging_message_filter.h
@@ -0,0 +1,41 @@
+// Copyright 2014 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.
+
+#ifndef CONTENT_BROWSER_PUSH_MESSAGING_MESSAGE_FILTER_H_
+#define CONTENT_BROWSER_PUSH_MESSAGING_MESSAGE_FILTER_H_
+
+#include <string>
+
+#include "content/public/browser/browser_message_filter.h"
+#include "content/public/common/push_messaging_status.h"
+
+namespace content {
+
+class PushMessagingMessageFilter : public BrowserMessageFilter {
+ public:
+  PushMessagingMessageFilter();
+
+ private:
+  virtual ~PushMessagingMessageFilter();
+
+  // BrowserMessageFilter implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message,
+                                 bool* message_was_ok) OVERRIDE;
+
+  void OnRegister(int routing_id,
+                  int callbacks_id,
+                  const std::string& sender_id);

[palmer, 2014/04/03 18:56:13]

What is the structure of this string?

[Michael van Ouwerkerk, 2014/04/04 10:39:55]

It's an opaque token from the perspective of this class. It looks like it might
actually be a number e.g. 670330094152, but GCM receives it as a string:
http://developer.android.com/reference/com/google/android/gms/gcm/GoogleCloud...


For more details about the registration mechanism please see:
http://developer.android.com/google/gcm/gs.html
http://developer.android.com/google/gcm/client.html

+
+  void DidRegister(int routing_id,
+                   int callbacks_id,
+                   const std::string& endpoint,

[palmer, 2014/04/03 18:56:13]

And of these strings?

[Michael van Ouwerkerk, 2014/04/04 10:39:55]

The endpoint will be a url unless we change the W3C specification. "the absolute
URL exposed by the push server where the application server can send push
notifications to":
https://dvcs.w3.org/hg/push/raw-file/tip/index.html#idl-def-PushRegistration

The registration id is again an opaque string from the perspective of this
class. It is returned by GCM's register method:
http://developer.android.com/reference/com/google/android/gms/gcm/GoogleCloud...

[palmer, 2014/04/04 17:57:16]

Ahh. Use a GURL then.

[Michael van Ouwerkerk, 2014/04/07 14:43:26]

Done.

+                   const std::string& registration_id,
+                   PushMessagingStatus status);
+
+  DISALLOW_COPY_AND_ASSIGN(PushMessagingMessageFilter);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_PUSH_MESSAGING_MESSAGE_FILTER_H_