I want to get a message back after succesfully connected with an UDP address via fsockopen. Connection with a RCON ModManager (game server).
What to expect?
If I use Telnet:
Telnet 31.204.131.9 15502 , I see:
ModManager Rcon v8.5
Digest seed: iJrrQAkv
Now in PHP:
<?php
$_ip = '31.204.131.9' ;
$_port = '15502';
if (($socket = fsockopen ('udp://'.$_ip, $_port, $errno, $errstr, 30))) {
// till here it works, got connected
// Digest seed?
if(fwrite($socket, "GET / HTTP/1.1\r\n")) { // writing works }
echo fread($socket, 1024); // NOTHING
fclose($socket);
}
?>
You can try it.. IP and Port valid. Thnx in advance!!
When you use telnet you use tcp protocol, not udp. Try
<?php
$_ip = '31.204.131.9' ;
$_port = '15502';
if (($socket = fsockopen ($_ip, $_port, $errno, $errstr, 30))) {
// till here it works, got connected
// Digest seed?
if(fwrite($socket, "GET / HTTP/1.1\r\n")) { echo "writing works\n"; }
echo fread($socket, 1024); // NOTHING
fclose($socket);
}
Related
I have a netcat server, running from command line:
netcat -l -q0 -p 9999 -c "tesseract stdin stdout -l spa"
I can connect to this server using netcat client:
cat /tmp/autogenerado.jpg | netcat 127.0.0.1 9999
So, I send a jpeg file to another server, and receive the OCR'ed data in client.
I want to do this in PHP:
$fp = fsockopen("tcp://127.0.0.1:9999", $errno, $errstr);
if (!$fp) {
echo "{$errno}: {$errstr}\n";
die();
}
fwrite($fp, $jpeg);
$contents = stream_get_contents($fp);
fclose($fp);
return $contents;
But the script hangs on stream_get_contents. I think it is because the netcat server doesn't know when the PHP client has finished sending data.
Is it possible to send an EOF ?
You need to shutdown the socket for writing, something like this:
<?php
$stream = stream_socket_client("tcp://whatever:9999", $errno, $errstr);
if (!$stream) {
echo "{$errno}: {$errstr}\n";
die();
}
fwrite($stream, $jpeg);
stream_socket_shutdown($stream, STREAM_SHUT_WR); /* This is the important line */
$contents = stream_get_contents($stream);
fclose($stream);
return $contents;
?>
For reference, final working code is:
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$result = socket_connect($sock, "10.187.252.35", 9999);
socket_send($sock,$bdata,strlen($bdata),MSG_EOR):
socket_shutdown ($sock,1);
while ($out = socket_read($sock, 2048)) {
echo $out;
}
socket_close($sock);
I'm working on a Server list viewer
and somebody told me that i should use UdpSocket to send data to the master server and receive data from it (in this case for MW2-IW4 game)
So this is the command or the socket you use
"\xff\xff\xff\getservers IW4 <MASTERSERVERPORTHERE> full empty\x00"
so i tried to work with this code
<?php
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
$msg = "\xff\xff\xff\getservers IW4 <MASTERSERVERPORT> full empty\x00";
$len = strlen($msg);
socket_sendto($sock, $msg, $len, 0, 'MASTERSERVERIP' , 1223);
socket_close($sock);
?>
but didn't receive any data , just getting the number 36 ...
PS:
i don't know much things about sockets.
i figured out how to do it a while ago and remembered this post, if anybody is still interested, this is how you do it:
<?php
$ip = "127.0.0.1";
$port = 1337;
$socket = fsockopen('udp://'.$ip, $port);
stream_set_blocking($socket, 0);
stream_set_timeout($socket, 1); //1 = timeout
fwrite($socket, "YOUR UDP COMMAND HERE\n");
$time=time()+1; //1=timeout
$returned = "";
while($time > time()) {
$returned .= fgets($socket);
}
echo($returned); // the returned value
#fclose($socket); //we are done, so better close it.
?>
Just use fsockopen it's a lot easier,
$fp = fsockopen("udp://127.0.0.1", 13, $errno, $errstr);
if (!$fp) echo "ERROR: $errno - $errstr<br />\n";
fwrite($fp, "\n");
while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
So I've been wondering (and testing), can I use fsockopen with proxy and UDP traffic?
Cause for example this:
$fp = fsockopen('udp://host.name.com', 512, $errno, $errstr);
if(!$fp){ die($errno . ' - ' . $errstr); }
works... but as soon as I add proxy
$proxy = "123.58.183.141 "; // proxy
$port = 1080; // proxy port
$fp = fsockopen("udp://".$proxy, $port, $errno, $errstr);
if(!$fp){ die($errno . ' - ' . $errstr); }
// after connecting to proxy... connect to target...
fputs($fp, "CONNECT host.name.com:512\r\n");
and try to send some data with fwrite read reply with fread I get nothing.
But without proxy everything works perfectly. I tried load of public proxies but I could never get reply...
Any thoughts on thisone? Also I'm starting to think "fputs($fp, "CONNECT host.name.com:512\r\n");" is not the right way for this... or is it?
i was want to connect to my fingerprint device useing TCP/IP
i was setting ip address in device,
my php code:
<?php
$fp = fsockopen("192.168.1.211", 80, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
$out = "GET / HTTP/1.1\r\n";
$out .= "Host: www.example.com\r\n";
$out .= "Connection: Close\r\n\r\n";
fwrite($fp, $out);
while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
}
?>
when i try to connect, i get error connection refused . but ping to device is work, i don't know where is the problem,
My fingerprint device specification:
Vendor :Solution
type : x101-c
i hope somebody can help and solve my problem,,
i really stack now....
but ping to device is work
Ping uses ICMP packets not TCP. If you're getting a connection refused then the (TCP) port is firewalled.
I need to send a message via UDP to a remote equipment. I know that if I use the same UDP port that it used while sending information to the server to write back to it the messages goes through.
I am currently using:
$fp = fsockopen( $destination, $port, $errno, $errstr);
if (!$fp) {
echo "ERROR: $errno - $errstr\n";
} else {
fwrite($fp, $m);
fclose($fp);
}
But in this way I have no control of which port is going to be used as the source port.
In Java have one can use:
client = new DatagramSocket(21000);
Is there a way to do something similar using PHP.
You could do it by creating a normal udp socket with socket_create() and using socket_bind() to bind it to a specific port. Then use e.g. socket_sendto for specifying the endpoint and port to send it to. Example code follows.
A simple server that spits out the port number and ip address of client using socket_stream_server():
<?php
set_time_limit (20);
$socket = stream_socket_server("udp://127.0.0.1:50000",
$errno, $errstr,
STREAM_SERVER_BIND);
if (!$socket) {
die("$errstr ($errno)");
}
do {
$packet = stream_socket_recvfrom($socket, 1, 0, $peer);
echo "$peer\n";
stream_socket_sendto($socket, date("D M j H:i:s Y\r\n"), 0, $peer);
} while ($packet !== false);
?>
and the client is like this:
<?php
$address = '127.0.0.1';
$port = 50001;
$dest_address = '127.0.0.1';
$dest_port = 50000;
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
if (socket_bind($sock, $address, $port) === false) {
echo "socket_bind() failed:" . socket_strerror(socket_last_error($sock)) . "\n";
}
$msg = "Ping !";
socket_sendto($sock, $msg, strlen($msg), 0, $dest_address, $dest_port);
socket_close($sock);
?>
Running the server (on the command line) gives this output when running the client multiple times:
<knuthaug#spider php>php server.php
127.0.0.1:50001
127.0.0.1:50001
127.0.0.1:50001
^C
<knuthaug#spider php>