From 2c843b9343279f5e3ed3063e77696fc3308414ff Mon Sep 17 00:00:00 2001
From: Peter Thorson <git@zaphoyd.com>
Date: Tue, 14 Apr 2015 08:14:47 -0400
Subject: [PATCH] echo_server now checks for a special command to stop
 listening for new connections

---
 examples/echo_server/echo_server.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/examples/echo_server/echo_server.cpp b/examples/echo_server/echo_server.cpp
index 5ec576f..5ae78ad 100644
--- a/examples/echo_server/echo_server.cpp
+++ b/examples/echo_server/echo_server.cpp
@@ -19,6 +19,13 @@ void on_message(server* s, websocketpp::connection_hdl hdl, message_ptr msg) {
               << " and message: " << msg->get_payload()
               << std::endl;
 
+    // check for a special command to instruct the server to stop listening so
+    // it can be cleanly exited.
+    if (msg->get_payload() == "stop-listening") {
+        s->stop_listening();
+        return;
+    }
+
     try {
         s->send(hdl, msg->get_payload(), msg->get_opcode());
     } catch (const websocketpp::lib::error_code& e) {