Stream and networking programming seems like a rock on the way to
ZCE for most people, so I'm learning some socket examples before I sit
in the room for exam.
Here is the script for server
<?php
$socket = stream_socket_server("tcp://127.0.0.1:1037", $errno, $errstr);
if(!$socket)
{
echo "$errstr ($errno) \n";
}
else
{
while($conn = stream_socket_accept($socket))
{
echo "New connection \n";
fwrite($conn, "Hello World \n");
fwrite($conn, "Do you want to close server? Yes(Y)/No(N) \n");
if(!feof($conn))
{
$answer = fread($conn, 1);
if($answer == 'Y')
{
echo "User choose to close server. \n";
break;
}
elseif($answer == 'N')
{
echo "Service continue... \n";
}
else
{
echo "Unknown answer '$answer'. \n";
}
}
fclose($conn);
}
fclose($socket);
}
and the client
<?php
$socket = stream_socket_client('tcp://127.0.0.1:1037', $errno, $errstr);
if(!$socket)
{
echo "$errstr ($errno) \n";
}
else
{
$answer = "Y";// fgets(STDIN)
fwrite($socket, $answer);
while(!feof($socket))
{
echo fread($socket, 100);
}
}
everything works, but if I write after read in client
<?php
$socket = stream_socket_client('tcp://127.0.0.1:1037', $errno, $errstr);
if(!$socket)
{
echo "$errstr ($errno) \n";
}
else
{
while(!feof($socket))
{
echo fread($socket, 100);
}
$answer = "Y";// fgets(STDIN)
fwrite($socket, $answer);
}
server&client hangs after output and time out later.
Can any1 point out whats the reason and the more correct way to get
socket client input in socket server?
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