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diff --git a/include/grpc++/client_context.h b/include/grpc++/client_context.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPCPP_CLIENT_CONTEXT_H__
+#define __GRPCPP_CLIENT_CONTEXT_H__
+
+#include <chrono>
+#include <string>
+#include <vector>
+
+#include <grpc++/config.h>
+
+using std::chrono::system_clock;
+
+struct grpc_call;
+struct grpc_completion_queue;
+
+namespace grpc {
+
+class ClientContext {
+ public:
+  ClientContext();
+  ~ClientContext();
+
+  void AddMetadata(const grpc::string &meta_key,
+                   const grpc::string &meta_value);
+
+  void set_absolute_deadline(const system_clock::time_point &deadline);
+  system_clock::time_point absolute_deadline();
+
+  void StartCancel();
+
+ private:
+  // Disallow copy and assign.
+  ClientContext(const ClientContext &);
+  ClientContext &operator=(const ClientContext &);
+
+  friend class Channel;
+  friend class StreamContext;
+
+  grpc_call *call() { return call_; }
+  void set_call(grpc_call *call) { call_ = call; }
+
+  grpc_completion_queue *cq() { return cq_; }
+  void set_cq(grpc_completion_queue *cq) { cq_ = cq; }
+
+  grpc_call *call_;
+  grpc_completion_queue *cq_;
+  system_clock::time_point absolute_deadline_;
+  std::vector<std::pair<grpc::string, grpc::string> > metadata_;
+};
+
+}  // namespace grpc
+
+#endif  // __GRPCPP_CLIENT_CONTEXT_H__