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diff --git a/src/mongo/db/sessions_collection_standalone.cpp b/src/mongo/db/sessions_collection_standalone.cpp
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+++ b/src/mongo/db/sessions_collection_standalone.cpp
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+/**
+ * Copyright (C) 2017 MongoDB Inc.
+ *
+ * This program is free software: you can redistribute it and/or  modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, the copyright holders give permission to link the
+ * code of portions of this program with the OpenSSL library under certain
+ * conditions as described in each individual source file and distribute
+ * linked combinations including the program with the OpenSSL library. You
+ * must comply with the GNU Affero General Public License in all respects
+ * for all of the code used other than as permitted herein. If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so. If you do not
+ * wish to do so, delete this exception statement from your version. If you
+ * delete this exception statement from all source files in the program,
+ * then also delete it in the license file.
+ */
+
+#include "mongo/platform/basic.h"
+
+#include "mongo/db/sessions_collection_standalone.h"
+
+#include "mongo/client/dbclientinterface.h"
+#include "mongo/client/query.h"
+#include "mongo/db/dbdirectclient.h"
+#include "mongo/db/operation_context.h"
+
+namespace mongo {
+
+namespace {
+
+BSONObj lsidQuery(const LogicalSessionId& lsid) {
+    return BSON(LogicalSessionRecord::kIdFieldName << lsid.toBSON());
+}
+}  // namespace
+
+StatusWith<LogicalSessionRecord> SessionsCollectionStandalone::fetchRecord(
+    OperationContext* opCtx, const LogicalSessionId& lsid) {
+    DBDirectClient client(opCtx);
+    auto cursor = client.query(kSessionsFullNS.toString(), lsidQuery(lsid), 1);
+    if (!cursor->more()) {
+        return {ErrorCodes::NoSuchSession, "No matching record in the sessions collection"};
+    }
+
+    try {
+        IDLParserErrorContext ctx("LogicalSessionRecord");
+        return LogicalSessionRecord::parse(ctx, cursor->next());
+    } catch (...) {
+        return exceptionToStatus();
+    }
+}
+
+Status SessionsCollectionStandalone::refreshSessions(OperationContext* opCtx,
+                                                     const LogicalSessionRecordSet& sessions,
+                                                     Date_t refreshTime) {
+    DBDirectClient client(opCtx);
+    return doRefresh(sessions, refreshTime, makeSendFn(&client));
+}
+
+Status SessionsCollectionStandalone::removeRecords(OperationContext* opCtx,
+                                                   const LogicalSessionIdSet& sessions) {
+    DBDirectClient client(opCtx);
+    return doRemove(sessions, makeSendFn(&client));
+}
+
+SessionsCollection::SendBatchFn SessionsCollectionStandalone::makeSendFn(DBDirectClient* client) {
+    auto send = [client](BSONObj batch) -> Status {
+        BSONObj res;
+        auto ok = client->runCommand(SessionsCollection::kSessionsDb.toString(), batch, res);
+        if (!ok) {
+            return {ErrorCodes::UnknownError,
+                    client->getLastError(SessionsCollection::kSessionsDb.toString())};
+        }
+        return Status::OK();
+    };
+
+    return send;
+}
+
+
+}  // namespace mongo