Implement WebSocketExtensionParser
Implement WebSocketExtensionParser, which parses Sec-WebSocket-Extension
header value as specified in RFC6455.
BUG=280910
Review URL: https://chromiumcodereview.appspot.com/23872029
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224102 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/net/websockets/websocket_extension.h b/net/websockets/websocket_extension.h
new file mode 100644
index 0000000..5af4023
--- /dev/null
+++ b/net/websockets/websocket_extension.h
@@ -0,0 +1,57 @@
+// Copyright 2013 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 NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
+#define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
+
+#include <string>
+#include <vector>
+
+#include "net/base/net_export.h"
+
+namespace net {
+
+// A WebSocketExtension instance represents a WebSocket extension specified
+// in RFC6455.
+class NET_EXPORT_PRIVATE WebSocketExtension {
+ public:
+ // Note that RFC6455 does not allow a parameter with an empty value.
+ class NET_EXPORT_PRIVATE Parameter {
+ public:
+ // Construct a parameter which does not have a value.
+ explicit Parameter(const std::string& name);
+ // Construct a parameter with a non-empty value.
+ Parameter(const std::string& name, const std::string& value);
+
+ bool HasValue() const { return !value_.empty(); }
+ const std::string& name() const { return name_; }
+ const std::string& value() const { return value_; }
+ bool Equals(const Parameter& other) const;
+
+ // The default copy constructor and the assignment operator are defined:
+ // we need them.
+ private:
+ std::string name_;
+ std::string value_;
+ };
+
+ WebSocketExtension();
+ explicit WebSocketExtension(const std::string& name);
+ ~WebSocketExtension();
+
+ void Add(const Parameter& parameter) { parameters_.push_back(parameter); }
+ const std::string& name() const { return name_; }
+ const std::vector<Parameter>& parameters() const { return parameters_; }
+ bool Equals(const WebSocketExtension& other) const;
+
+ // The default copy constructor and the assignment operator are defined:
+ // we need them.
+ private:
+ std::string name_;
+ std::vector<Parameter> parameters_;
+};
+
+} // namespace net
+
+#endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
