Activate SO_KEEPALIVE on socket

issue4398
review7781003

tryton/jsonrpc.py

@@ -192,6 +192,7 @@ class Transport(xmlrpclib.Transport, xmlrpclib.SafeTransport):
             self._connection[1].connect()
             sock = self._connection[1].sock
             sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+            sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
 
         def https_connection():
             self._connection = host, HTTPSConnection(host,
@@ -200,6 +201,7 @@ class Transport(xmlrpclib.Transport, xmlrpclib.SafeTransport):
                 self._connection[1].connect()
                 sock = self._connection[1].sock
                 sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+                sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
                 try:
                     peercert = sock.getpeercert(True)
                 except socket.error: