Splitting interop_server.cc
diff --git a/test/cpp/interop/interop_server.cc b/test/cpp/interop/interop_server.cc
index ebef000..384d8da 100644
--- a/test/cpp/interop/interop_server.cc
+++ b/test/cpp/interop/interop_server.cc
@@ -31,7 +31,6 @@
  *
  */
 
-#include <signal.h>
 #include <unistd.h>
 
 #include <fstream>
@@ -311,7 +310,9 @@
   }
 };
 
-void RunServer() {
+void grpc::testing::interop::RunServer(
+    std::shared_ptr<ServerCredentials> creds) {
+  GPR_ASSERT(FLAGS_port != 0);
   std::ostringstream server_address;
   server_address << "0.0.0.0:" << FLAGS_port;
   TestServiceImpl service;
@@ -321,8 +322,6 @@
 
   ServerBuilder builder;
   builder.RegisterService(&service);
-  std::shared_ptr<ServerCredentials> creds =
-      grpc::testing::CreateInteropServerCredentials();
   builder.AddListeningPort(server_address.str(), creds);
   std::unique_ptr<Server> server(builder.BuildAndStart());
   gpr_log(GPR_INFO, "Server listening on %s", server_address.str().c_str());
@@ -330,15 +329,3 @@
     sleep(5);
   }
 }
-
-static void sigint_handler(int x) { got_sigint = true; }
-
-int main(int argc, char** argv) {
-  grpc::testing::InitTest(&argc, &argv, true);
-  signal(SIGINT, sigint_handler);
-
-  GPR_ASSERT(FLAGS_port != 0);
-  RunServer();
-
-  return 0;
-}
diff --git a/test/cpp/interop/interop_server_bootstrap.cc b/test/cpp/interop/interop_server_bootstrap.cc
new file mode 100644
index 0000000..424f7ca
--- /dev/null
+++ b/test/cpp/interop/interop_server_bootstrap.cc
@@ -0,0 +1,54 @@
+/*
+ *
+ * Copyright 2016, 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.
+ *
+ */
+
+#include <signal.h>
+#include <unistd.h>
+
+#include "test/cpp/interop/server_helper.h"
+#include "test/cpp/util/test_config.h"
+
+bool grpc::testing::interop::g_got_sigint = false;
+
+static void sigint_handler(int x) {
+  grpc::testing::interop::g_got_sigint = true;
+}
+
+int main(int argc, char** argv) {
+  grpc::testing::InitTest(&argc, &argv, true);
+  signal(SIGINT, sigint_handler);
+
+  grpc::testing::interop::RunServer(
+      grpc::testing::CreateInteropServerCredentials());
+
+  return 0;
+}
diff --git a/test/cpp/interop/server_helper.h b/test/cpp/interop/server_helper.h
index a1da14a..fc4ea8b3e 100644
--- a/test/cpp/interop/server_helper.h
+++ b/test/cpp/interop/server_helper.h
@@ -60,6 +60,12 @@
   const ::grpc::ServerContext& context_;
 };
 
+namespace interop {
+
+extern bool g_got_sigint;
+void RunServer(std::shared_ptr<ServerCredentials> creds);
+
+}  // namespace interop
 }  // namespace testing
 }  // namespace grpc