digitalmars.D.learn - Network scanner
- RuZzz (131/131) Nov 06 2014 Hi ppl! I want to scan the local network to find nodes with open
- RuZzz (1/1) Nov 06 2014 Or the program doesn't find the address after IP 192.168.110.34...
- RuZzz (1/1) Nov 11 2014 OS WinXP
- RuZzz (2/2) Nov 11 2014 netstat reports that the socket is in the TIME_WAIT or CLOSE_WAIT
- ketmar via Digitalmars-d-learn (4/6) Nov 11 2014 i'm not an expert in winsock, but did you tried to set SO_LINGER to
- =?UTF-8?B?IkrDvHJnZW4=?= Reichmann" (15/23) Nov 11 2014 Closed ports stay in state WAIT for quite a while.
Hi ppl! I want to scan the local network to find nodes with open
80 port.
code:
import core.thread, core.atomic;
import std.stdio, std.system, std.file, std.conv, std.datetime,
std.socket, std.socketstream, std.stream;
import vibe.core.log;
import vibe.d;
void main()
{
ushort port = 80;
auto stIP ="192.168.110.";
ushort startIP = 1;
uint size_buf;
for (ushort i = 1; i < 150; i += size_buf)
{
auto socksGlobal = new SocketSet;
auto socks = new SocketSet;
size_buf = socksGlobal.max;
writeln("start cycle ", stIP, i, "\t size socks max ",
size_buf);
ushort byteIP = i;
Socket [] ar_sock;
ar_sock.length = size_buf;
foreach (ref msa; ar_sock)
{
msa = new TcpSocket();
msa.blocking = false;
socksGlobal.add(msa);
auto addrr = stIP~to!string(byteIP);
byteIP++;
auto objAddr = new InternetAddress(addrr, port);
try
{
msa.connect(objAddr);
}
catch (SocketException e)
{
writeln(e.msg);
}
}
auto ipC = 0;
while(ipC < 5)
{
ipC++;
int re = 0;
foreach (ref msa; ar_sock)
{
if (socksGlobal.isSet(msa))
socks.add(msa);
}
try
{
re = Socket.select(null, socks, null ,dur!"seconds"(3));
}
catch (SocketException e)
{
writeln(e.msg);
}
st = Clock.currTime(UTC());
writeln(st.toSimpleString~"\t\t: select res : ", re, " sock
seln", socksGlobal.selectn);
foreach (ref msa; ar_sock)
{
if (socks.isSet(msa))
{
st = Clock.currTime(UTC());
auto addrr = to!string(msa.remoteAddress);
writeln(st.toSimpleString~"\t\t: "~addrr~" online");
socksGlobal.remove(msa);
}
//msa.close();
}
socks.reset();
}
foreach (ref msa; ar_sock)
{
msa.shutdown(SocketShutdown.BOTH);
msa.close();
}
socksGlobal.reset();
}
}
output:
start cycle 192.168.110.1 size socks max 64
2014-Nov-06 12:51:59.46875Z : select res : 22 sock seln64
2014-Nov-06 12:51:59.46875Z : 192.168.110.6:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.9:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.10:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.11:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.12:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.14:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.15:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.16:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.17:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.18:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.19:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.20:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.21:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.22:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.23:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.24:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.26:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.27:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.28:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.29:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.30:80 online
2014-Nov-06 12:51:59.484375Z : 192.168.110.32:80 online
2014-Nov-06 12:52:00.0625Z : select res : 1 sock seln42
2014-Nov-06 12:52:00.0625Z : 192.168.110.35:80 online
2014-Nov-06 12:52:00.0625Z : select res : 1 sock seln41
2014-Nov-06 12:52:00.0625Z : 192.168.110.31:80 online
2014-Nov-06 12:52:00.421875Z : select res : 1 sock seln40
2014-Nov-06 12:52:00.421875Z : 192.168.110.34:80 online
2014-Nov-06 12:52:03.421875Z : select res : 0 sock seln39
start cycle 192.168.110.65 size socks max 64
2014-Nov-06 12:52:06.453125Z : select res : 0 sock seln64
2014-Nov-06 12:52:09.453125Z : select res : 0 sock seln64
2014-Nov-06 12:52:12.453125Z : select res : 0 sock seln64
2014-Nov-06 12:52:15.453125Z : select res : 0 sock seln64
2014-Nov-06 12:52:18.453125Z : select res : 0 sock seln64
start cycle 192.168.110.129 size socks max 64
2014-Nov-06 12:52:21.46875Z : select res : 0 sock seln64
2014-Nov-06 12:52:24.46875Z : select res : 0 sock seln64
2014-Nov-06 12:52:27.46875Z : select res : 0 sock seln64
2014-Nov-06 12:52:30.46875Z : select res : 0 sock seln64
2014-Nov-06 12:52:33.46875Z : select res : 0 sock seln64
The program doesn't find the address after IP 192.168.110.65
Why?
What can be improved in the program?
Where can i read more about dlang sockets?
Nov 06 2014
"RuZzz" <xruzzzz gmail.com> Or the program doesn't find the address after IP 192.168.110.34...
Nov 06 2014
netstat reports that the socket is in the TIME_WAIT or CLOSE_WAIT state.
Nov 11 2014
On Tue, 11 Nov 2014 15:35:28 +0000 RuZzz via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> wrote:netstat reports that the socket is in the TIME_WAIT or CLOSE_WAIT=20 state.i'm not an expert in winsock, but did you tried to set SO_LINGER to "off"?
Nov 11 2014
On Tuesday, 11 November 2014 at 16:04:21 UTC, ketmar via Digitalmars-d-learn wrote:On Tue, 11 Nov 2014 15:35:28 +0000 RuZzz via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> wrote:Closed ports stay in state WAIT for quite a while. If SO_LINGER=off doesn't help try to tune some Windows TCP parameters: - reduce TcpTimedWaitDelay from 120 to 30 seconds - use ports above 5000 - bigger port hash table Remember to reboot after stetting these registry values: REGEDIT4 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters] "TcpTimedWaitDelay"=dword:0000001e "MaxUserPort"=dword:fffe "MaxHashTableSize"=dword:ffff "NumTcbTablePartitions"=dword:8netstat reports that the socket is in the TIME_WAIT or CLOSE_WAIT state.i'm not an expert in winsock, but did you tried to set SO_LINGER to "off"?
Nov 11 2014