So. I have a PHP socket server and Java socket client.
Maybe it's a stupid question... but i didn't find an answer.
In client, i need to read incoming bytes from input stream and put them into byte array.
I tried to do so:
[CLIENT (Java)]
public static byte[] read(BufferedInputStream in)
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[32768];
while (true) {
int readBytesCount = in.read(buffer);
if (readBytesCount == -1) {
break;
}
if (readBytesCount > 0) {
baos.write(buffer, 0, readBytesCount);
}
}
baos.flush();
baos.close();
return baos.toByteArray();
}
[SERVER (PHP)]
function write(&$client, $message)
{
$message = explode("\n", $message);
foreach ($message as $line)
{
socket_write($client['sock'], $line."\0");
}
}
But when it read all bytes, in.read() doesn't return -1, so the cycle doesn't stop. One time it returns 13 (length) and then - nothing. Any ideas?
SOLVED!
[CLIENT (Java)]
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[32768];
while (true) {
int readBytesCount = in.read(buffer);
if (getString(buffer).contains("#!EOS!#")) {
baos.flush();
baos.close();
return baos.toByteArray();
}
if (readBytesCount > 0) {
baos.write(buffer, 0, readBytesCount - 1);
}
}
[SERVER (PHP)]
function write(&$client, $message)
{
$message = explode("\n", $message);
$message = str_replace("\r", "", $message);
foreach ($message as $line)
{
rLog("Write to ".$client['ip'].": ".$line);
socket_write($client['sock'], $line."\0") or die("[".date('Y-m-d H:i:s')."] Could not write to socket\n");
}
socket_write($client['sock'], "#!EOS!#");
}
If your socket is still opened I believe that read will never retun -1. You do not close the trasmission ( in terms of file an EOF is not reached ). I believe that your read call returns 0 when your message is end ( instead of -1 ).
Java docs: Read returns: * The specified number of bytes have been read, * The read method of the underlying stream returns -1, indicating end-of-file, or * The available method of the underlying stream returns zero, indicating that further input requests would block.
So I believe you need to send a terminating character sequence, or the number of characters you will send, in order to identify on client-side the boundaries of your chunk of data ( the message ) inside the streaming of data.
I agree with Stefano. No EOF or terminate signal is happening on the php server side. socket_write is just writing $message to the client side. If your intent is to terminate the connection after the entire message has been written, then you might have to explicitly use socket_shutdown/socket_close.
You can also try socket_send with flags. Here is the doc for that http://www.php.net/manual/en/function.socket-send.php
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