test/others/rpc: also run RPC version command via service

This extends the test.py to also run the RPC command VERSION via 'criu
service'. It was already running using 'criu swrk'.
Signed-off-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

test/others/rpc/test.py

@@ -42,3 +42,40 @@ else:
 
 	if resp.dump.restored:
 		print 'Restored'
+
+# Connect to service socket
+s = socket.socket(socket.AF_UNIX, socket.SOCK_SEQPACKET)
+s.connect(args['socket'])
+
+# Create criu msg, set it's type to dump request
+# and set dump options. Checkout more options in protobuf/rpc.proto
+req = rpc.criu_req()
+req.type = rpc.VERSION
+
+# Send request
+s.send(req.SerializeToString())
+
+# Recv response
+resp = rpc.criu_resp()
+MAX_MSG_SIZE = 1024
+resp.ParseFromString(s.recv(MAX_MSG_SIZE))
+
+if resp.type != rpc.VERSION:
+	print('RPC: Unexpected msg type')
+	sys.exit(-1)
+else:
+	if resp.success:
+		print('RPC: Success')
+		print('CRIU major %d' % resp.version.major)
+		print('CRIU minor %d' % resp.version.minor)
+		if resp.version.HasField('gitid'):
+			print('CRIU gitid %s' % resp.version.gitid)
+		if resp.version.HasField('sublevel'):
+			print('CRIU sublevel %s' % resp.version.sublevel)
+		if resp.version.HasField('extra'):
+			print('CRIU extra %s' % resp.version.extra)
+		if resp.version.HasField('name'):
+			print('CRIU name %s' % resp.version.name)
+	else:
+		print 'Fail'
+		sys.exit(-1)