--- /dev/null
+/*
+ *
+ * Copyright 2017 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+#define GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/filters/client_channel/proxy_mapper.h"
+
+void grpc_proxy_mapper_registry_init();
+void grpc_proxy_mapper_registry_shutdown();
+
+/// Registers a new proxy mapper. Takes ownership.
+/// If \a at_start is true, the new mapper will be at the beginning of
+/// the list. Otherwise, it will be added to the end.
+void grpc_proxy_mapper_register(bool at_start, grpc_proxy_mapper* mapper);
+
+bool grpc_proxy_mappers_map_name(const char* server_uri,
+ const grpc_channel_args* args,
+ char** name_to_resolve,
+ grpc_channel_args** new_args);
+
+bool grpc_proxy_mappers_map_address(const grpc_resolved_address* address,
+ const grpc_channel_args* args,
+ grpc_resolved_address** new_address,
+ grpc_channel_args** new_args);
+
+#endif /* GRPC_CORE_EXT_FILTERS_CLIENT_CHANNEL_PROXY_MAPPER_REGISTRY_H */