Manos server does not close connections
Massimiliano Mantione
Specifically, if a client opens a connection and then closes it
immediately without sending any data, Manos does not close the
connection on the server side.
This has also been tested on current master on github (current as
October 18 2011, I don't remember the revision hash).
To test it, compile and execute the following program like this:
mono ManosKiller.exe 127.0.0.1 8181 1000
and after one thousand opened connections the server dies.
With a 1000ms timeout it takes about 16 minutes, if you want to see it
dying faster just give a shorter interval to the test program.
A similar test on Apache does not show problems.
Unfortunately I don't have time to debug this just now, but I thought
it could interest somebody :-)
And BTW, I have to credit Torello Querci of Negens (www.negens.com)
for tracking this down and testing it!
Cheers!
Massi
===================================================================================
using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace ManosKiller
{
class MainClass
{
public static void usage() {
Console.WriteLine ("ManosKiller
server_ip_address server_ip_port
interval_in_millis [max_try]");
}
public static void Main (string[] args)
{
Console.WriteLine ("Testing Manos Killer");
if (args.Length < 3 || args.Length > 4) {
usage();
Environment.Exit ( 1 );
}
string serverIpAddr = args[0];
int serverPort = Int32.Parse(args[1]);
int interval = Int32.Parse(args[2]);
int max_try = Int32.MaxValue;
if (args.Length >= 4) {
max_try = Int32.Parse (args[3]);
}
for (int i = 1; i<max_try; ++i) {
System.Threading.Thread.Sleep (interval);
Console.WriteLine (string.Format
("Socket no° {0}", i));
Socket listener = new Socket
(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.IP);
IPAddress ipAdd =
System.Net.IPAddress.Parse(serverIpAddr);
IPEndPoint remoteEP = new IPEndPoint
(ipAdd,serverPort);
listener.Connect (remoteEP);
listener.Close();
}
}
}
}