X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=doc%2Fprotocol.txt;h=4c8ddd5003e29a4a93ac50b98c14321a5af084f7;hb=65a6a316d081d3951438bbbcfce74c9c65db407a;hp=82dca59bfc617da485c66eab75867a4ca856a443;hpb=cab426ffa3feaf1a36b35342b68adce83456c00d;p=minetest.git

diff --git a/doc/protocol.txt b/doc/protocol.txt
index 82dca59bf..4c8ddd500 100644
--- a/doc/protocol.txt
+++ b/doc/protocol.txt
@@ -1,4 +1,4 @@
-Minetest-c55 protocol (incomplete, early draft):
+Minetest protocol (incomplete, early draft):
 Updated 2011-06-18
 
 A custom protocol over UDP.
@@ -59,14 +59,52 @@ function check_if_minetestserver_up($host, $port)
 	{
 		# We got a reply! read the peer id from it.
 		$peer_id = substr($buf, 9, 2);
-		
+
 		# Disconnect
 		$buf = "\x4f\x45\x74\x03".$peer_id."\x00\x00\x03";
 		socket_sendto($socket, $buf, strlen($buf), 0, $host, $port);
 		socket_close($socket);
-		
+
 		return true;
 	}
 	return false;
 }
 
+- Here's a Python script for checking if a minetest server is up, confirmed working
+
+#!/usr/bin/env python3
+import sys, time, socket
+
+address = ""
+port = 30000
+if len(sys.argv) <= 1:
+    print("Usage: %s <address>" % sys.argv[0])
+    exit()
+if ":" in sys.argv[1]:
+    address = sys.argv[1].split(":")[0]
+    try:
+        port = int(sys.argv[1].split(":")[1])
+    except ValueError:
+        print("Please specify a valid port")
+        exit()
+else:
+    address = sys.argv[1]
+
+try:
+    start = time.time()
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.settimeout(2.0)
+    buf = b"\x4f\x45\x74\x03\x00\x00\x00\x01"
+    sock.sendto(buf, (address, port))
+    data, addr = sock.recvfrom(1000)
+    if data:
+        peer_id = data[12:14]
+        buf = b"\x4f\x45\x74\x03" + peer_id + b"\x00\x00\x03"
+        sock.sendto(buf, (address, port))
+        sock.close()
+        end = time.time()
+        print("%s is up (%0.5fms)" % (sys.argv[1], end - start))
+    else:
+        print("%s seems to be down " % sys.argv[1])
+except Exception as err:
+    print("%s seems to be down (%s) " % (sys.argv[1], str(err)))