add mt_api library

pythonlibs/mt_api/socket_utils.py

@@ -0,0 +1,15 @@
+import socket
+
+
+# http://stackoverflow.com/a/14855726
+def set_keepalive(sock, after_idle_sec=1, interval_sec=3, max_fails=5):
+    """Set TCP keepalive on an open socket.
+
+    It activates after 1 second (after_idle_sec) of idleness,
+    then sends a keepalive ping once every 3 seconds (interval_sec),
+    and closes the connection after 5 failed ping (max_fails), or 15 seconds
+    """
+    sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
+    sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, after_idle_sec)
+    sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, interval_sec)
+    sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, max_fails)