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Improve debugging and code optimisations for Socket operations

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This commit is contained in:
Deon George 2023-06-28 19:50:24 +10:00
parent ad36da0bb1
commit f9f9fb5345
2 changed files with 246 additions and 292 deletions
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471
app/Classes/Sock/SocketClient.php
View File

@ -29,36 +29,27 @@ final class SocketClient {
private array $session = [];
private const OK = 0;
private const EOF = -1;
private const TIMEOUT = -2;
private const RCDO = -3;
private const GCOUNT = -4;
private const ERROR = -5;
private const TTY_SUCCESS = self::OK;
private const TTY_TIMEOUT = self::TIMEOUT;
private const TTY_HANGUP = self::RCDO;
private const TTY_ERROR = self::ERROR;
public const TCP_SPEED = 115200;
// Buffer for sending
private const TX_BUF_SIZE = (0x8100);
private int $tx_ptr = 0;
private int $tx_free = self::TX_BUF_SIZE;
private int $tty_status = 0;
/** @var string Size of our TX buffer */
private const TX_BUF_SIZE = 0xFFFF;
/** @var string Maximum amount of data to send at a time */
private const TX_SIZE = 0xFFFF;
/** @var string Data in the TX buffer */
private string $tx_buf = '';
// Buffer for receiving
private const RX_BUF_SIZE = (0x8100);
private int $rx_ptr = 0;
private int $rx_left = 0;
/** @var string Size of our RX buffer */
private const RX_BUF_SIZE = 0xFFFF;
/** @var string Maximum amount of data to received at a time */
private const RX_SIZE = 0xFFFF;
/** @var string Data in the RX buffer */
private string $rx_buf = '';
public function __construct (\Socket $connection) {
$this->connection = $connection;
if ($this->type === 'TCP') {
if ($this->type === SOCK_STREAM) {
socket_getsockname($connection,$this->address_local,$this->port_local);
socket_getpeername($connection,$this->address_remote,$this->port_remote);
Log::info(sprintf('%s:+ Connection host [%s] on port [%d] (%s)',self::LOGKEY,$this->address_remote,$this->port_remote,$this->type));
@ -75,16 +66,17 @@ final class SocketClient {
case 'speed':
return Arr::get($this->session,$key);
case 'type':
switch ($x=socket_get_option($this->connection,SOL_SOCKET,SO_TYPE)) {
case SOCK_STREAM:
return 'TCP';
case SOCK_DGRAM:
return 'UDP';
case 'rx_free':
return self::RX_BUF_SIZE-$this->rx_left;
default:
return sprintf('UNKNOWN [%d]',$x);
}
case 'rx_left':
return strlen($this->rx_buf);
case 'tx_free':
return self::TX_BUF_SIZE-strlen($this->tx_buf);
case 'type':
return socket_get_option($this->connection,SOL_SOCKET,SO_TYPE);
default:
throw new \Exception(sprintf('%s:! Unknown key [%s]:',self::LOGKEY,$key));
@ -102,150 +94,6 @@ final class SocketClient {
}
}
/**
* We'll add to our transmit buffer and if doesnt have space, we'll empty it first
*
* @param string $data
* @return void
* @throws \Exception
*/
public function buffer_add(string $data): void
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Start [%s] (%d)',self::LOGKEY,$data,strlen($data)));
//$rc = self::OK;
//$tx_ptr = self::TX_BUF_SIZE-$this->tx_free;
$ptr = 0;
$num_bytes = strlen($data);
$this->tty_status = self::TTY_SUCCESS;
while ($num_bytes) {
if ($this->DEBUG)
Log::debug(sprintf('%s: - Num Bytes [%d]: TX Free [%d]',self::LOGKEY,$num_bytes,$this->tx_free));
if ($num_bytes > $this->tx_free) {
do {
$this->buffer_flush(5);
if ($this->tty_status === self::TTY_SUCCESS) {
$n = min($this->tx_free,$num_bytes);
$this->tx_buf = substr($data,$ptr,$n);
$this->tx_free -= $n;
$num_bytes -= $n;
$ptr += $n;
}
} while ($this->tty_status != self::TTY_SUCCESS);
} else {
if ($this->DEBUG)
Log::debug(sprintf('%s: - Remaining data to send [%d]',self::LOGKEY,$num_bytes));
$this->tx_buf .= substr($data,$ptr,$num_bytes);
$this->tx_free -= $num_bytes;
$num_bytes = 0;
}
}
if ($this->DEBUG)
Log::debug(sprintf('%s:= End [%s]',self::LOGKEY,strlen($this->tx_buf)));
}
/**
* Clear our TX buffer
*/
public function buffer_clear(): void
{
$this->tx_buf = '';
$this->tx_free = self::TX_BUF_SIZE;
}
/**
* Empty our TX buffer
*
* @param int $timeout
* @return int
* @throws \Exception
*/
public function buffer_flush(int $timeout): int
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Start [%d]',self::LOGKEY,$timeout));
$rc = self::OK;
$tx_ptr = 0;
$restsize = self::TX_BUF_SIZE-$this->tx_free;
$tm = $this->timer_set($timeout);
while (self::TX_BUF_SIZE != $this->tx_free) {
$tv = $this->timer_rest($tm);
if ($rc = $this->canSend($tv)>0) {
if ($this->DEBUG)
Log::debug(sprintf('%s: - Sending [%d]',self::LOGKEY,$restsize));
$rc = $this->send(substr($this->tx_buf,$tx_ptr,$restsize),0);
if ($this->DEBUG)
Log::debug(sprintf('%s: - Sent [%d] (%s)',self::LOGKEY,$rc,Str::limit($this->tx_buf,15)));
if ($rc === $restsize) {
$this->tx_buf = '';
$tx_ptr = 0;
$this->tx_free += $rc;
$this->buffer_clear();
} else if ($rc > 0) {
$tx_ptr += $rc;
$restsize -= $rc;
}
} else {
return $rc;
}
// @todo Enable a delay for slow clients
//sleep(1);
if ($this->timer_expired($tm))
return self::ERROR;
}
if ($this->DEBUG)
Log::debug(sprintf('%s:= End [%d]',self::LOGKEY,$rc));
return $rc;
}
/**
* @param int $timeout
* @return int
* @throws \Exception
*/
public function canSend(int $timeout): int
{
$write = [$this->connection];
return $this->socketSelect(NULL,$write,NULL,$timeout);
}
/**
* Close the connection with the client
*/
public function close(): void
{
try {
socket_shutdown($this->connection);
} catch (\ErrorException $e) {
Log::error(sprintf('%s:+ Shutting down socket [%s]',self::LOGKEY,$e->getMessage()));
}
try {
socket_close($this->connection);
} catch (\ErrorException $e) {
Log::error(sprintf('%s:+ Closing socket [%s]',self::LOGKEY,$e->getMessage()));
}
}
/**
* Create a client socket
*
@ -256,7 +104,8 @@ final class SocketClient {
*/
public static function create(string $address,int $port): self
{
Log::debug(sprintf('%s:+ Creating connection to [%s:%d]',self::LOGKEY,$address,$port));
Log::info(sprintf('%s:+ Creating connection to [%s:%d]',self::LOGKEY,$address,$port));
$sort = collect(['AAAA','A']);
// We only look at AAAA/A records
@ -275,7 +124,7 @@ final class SocketClient {
if (! $try)
continue;
Log::alert(sprintf('%s: - Trying [%s:%d]',self::LOGKEY,$try,$port));
Log::info(sprintf('%s:- Trying [%s:%d]',self::LOGKEY,$try,$port));
/* Create a TCP/IP socket. */
$socket = socket_create(Arr::get($address,'type') === 'AAAA' ? AF_INET6 : AF_INET,SOCK_STREAM,SOL_TCP);
@ -301,9 +150,126 @@ final class SocketClient {
}
/**
* We'll add to our transmit buffer and if doesnt have space, we'll empty it first
*
* @param string $data
* @return void
* @throws \Exception
*/
public function buffer_add(string $data): void
{
$ptr = 0;
$num_bytes = strlen($data);
while ($num_bytes) {
if ($this->DEBUG)
Log::debug(sprintf('%s:- To add [%d] to the TX buffer',self::LOGKEY,$num_bytes));
if ($num_bytes > $this->tx_free) {
if ($this->DEBUG)
Log::debug(sprintf('%s:- TX buffer will be too full, draining...',self::LOGKEY));
do {
$this->buffer_flush(5);
$n = min($this->tx_free,$num_bytes);
$this->tx_buf = substr($data,$ptr,$n);
$num_bytes -= $n;
$ptr += $n;
} while ($num_bytes);
} else {
$this->tx_buf .= substr($data,$ptr,$num_bytes);
$num_bytes = 0;
}
}
if ($this->DEBUG)
Log::debug(sprintf('%s:= TX buffer has [%d] space left',self::LOGKEY,$this->tx_free));
}
/**
* Empty our TX buffer
*
* @param int $timeout
* @return int
* @throws \Exception
*/
public function buffer_flush(int $timeout): int
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Emptying TX buffer with [%d] chars, and timeout [%d]',self::LOGKEY,strlen($this->tx_buf),$timeout));
$tm = $this->timer_set($timeout);
$rc = self::OK;
while (strlen($this->tx_buf)) {
$tv = $this->timer_rest($tm);
if (($rc=$this->canSend($tv)) > 0) {
if ($this->DEBUG)
Log::debug(sprintf('%s:- Chars to send [%d]',self::LOGKEY,strlen($this->tx_buf)));
$sent = $this->send(substr($this->tx_buf,0,self::TX_SIZE),0);
if ($this->DEBUG)
Log::debug(sprintf('%s:- Sent [%d] chars [%s]',self::LOGKEY,$rc,Str::limit($this->tx_buf,15)));
$this->tx_buf = substr($this->tx_buf,$sent);
} else {
return $rc;
}
// @todo Enable a delay for slow clients
//sleep(1);
if ($this->timer_expired($tm))
return self::ERROR;
}
$this->tx_purge();
return $rc;
}
/**
* @param int $timeout
* @return int
* @throws \Exception
*/
public function canSend(int $timeout): int
{
$write = [$this->connection];
return $this->socketSelect(NULL,$write,NULL,$timeout);
}
/**
* Close the connection with the client
*/
public function close(): void
{
try {
socket_shutdown($this->connection);
} catch (\ErrorException $e) {
Log::error(sprintf('%s:! Shutting down socket [%s]',self::LOGKEY,$e->getMessage()));
}
try {
socket_close($this->connection);
} catch (\ErrorException $e) {
Log::error(sprintf('%s:! Closing socket [%s]',self::LOGKEY,$e->getMessage()));
}
Log::info(sprintf('%s:= Connection closed with [%s]',self::LOGKEY,$this->address_remote));
}
/**
* We have data in the buffer or on the socket
*
* @param int $timeout
* @return int
* @note use socketSelect()
* @throws \Exception
*/
public function hasData(int $timeout): int
@ -314,29 +280,22 @@ final class SocketClient {
}
/**
* Read data from the socket.
* Read data, emptying from the RX buffer first, then checking the socket.
*
* @param int $timeout
* @param int $len
* @param int $size
* @param int $timeout How long to wait for data
* @param int $len The amount of data we want
* @return string
* @throws SocketException
*/
public function read(int $timeout,int $len=1024,int $size=1024): string
public function read(int $timeout,int $len=1024): string
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Start [%d] (%d)',self::LOGKEY,$len,$timeout));
// We have data in our buffer
if ($this->rx_left >= $len) {
$result = substr($this->rx_buf,$this->rx_ptr,$len);
$this->rx_ptr += $len;
$this->rx_left -= $len;
if ($this->DEBUG)
Log::debug(sprintf('%s:- Returning [%d] chars from the RX buffer',self::LOGKEY,$len));
if ($this->rx_left === 0) {
$this->rx_buf = '';
$this->rx_ptr = 0;
}
$result = substr($this->rx_buf,0,$len);
$this->rx_buf = substr($this->rx_buf,strlen($result));
return $result;
}
@ -345,12 +304,19 @@ final class SocketClient {
return '';
$buf = '';
try {
if ($this->type === 'TCP')
$rc = socket_recv($this->connection,$buf, $size,MSG_DONTWAIT);
else {
$rc = socket_recvfrom($this->connection,$buf, $size,MSG_DONTWAIT,$this->address_remote,$this->port_remote);
try {
switch ($this->type) {
case SOCK_STREAM:
$recv = socket_recv($this->connection,$buf,self::RX_SIZE,MSG_DONTWAIT);
break;
case SOCK_DGRAM:
$recv = socket_recvfrom($this->connection,$buf,self::RX_SIZE,MSG_DONTWAIT,$this->address_remote,$this->port_remote);
break;
default:
throw new SocketException(SocketException::SOCKET_ERROR,sprintf('Unhandled socket type: %s',$this->type));
}
} catch (\Exception $e) {
@ -359,30 +325,26 @@ final class SocketClient {
throw new SocketException($x=socket_last_error($this->connection),socket_strerror($x));
}
if ($this->DEBUG)
Log::debug(sprintf('%s: - Read [%d]',self::LOGKEY,$rc));
if ($rc === FALSE) {
// If we got no data, we'll send whatever is left in the buffer
if ($recv === FALSE) {
// If we have something in the buffer, we'll send it
if ($this->rx_left && $this->rx_left < $len) {
$return = substr($this->rx_buf,$this->rx_ptr);
if ($this->rx_left) {
if ($this->DEBUG)
Log::debug(sprintf('%s:- Network read return an error, returning final [%d] chars from the RX buffer',self::LOGKEY,strlen($this->rx_buf)));
$this->rx_left = 0;
$this->rx_ptr = 0;
$result = $this->rx_buf;
$this->rx_buf = '';
return $return;
return $result;
}
Log::error(sprintf('%s:! Request to read [%d] chars resulted in no data',self::LOGKEY,$len));
throw new SocketException($x=socket_last_error($this->connection),socket_strerror($x));
}
$this->rx_buf .= $buf;
$this->rx_left += strlen($buf);
// If our buffer is null, see if we have any out of band data.
// @todo We throw an errorexception when the socket is closed by the remote I think.
if (($rc === 0) && is_nulL($buf) && ($this->hasData(0) > 0)) {
if (($recv === 0) && is_null($buf) && ($this->hasData(0) > 0) && $this->type === SOCK_STREAM) {
try {
socket_recv($this->connection,$buf,$len,MSG_OOB);
@ -391,7 +353,13 @@ final class SocketClient {
}
}
return $this->read($timeout,$len,$size);
$this->rx_buf .= $buf;
if ($this->DEBUG)
Log::debug(sprintf('%s:- Added [%d] chars to the RX buffer',self::LOGKEY,strlen($buf)));
// Loop again and return the data, now that it is in the RX buffer
return $this->read($timeout,$len);
}
/**
@ -404,52 +372,35 @@ final class SocketClient {
*/
public function read_ch(int $timeout): int
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Start [%d] - rx_left[%d], rx_ptr[%d]',self::LOGKEY,$timeout,$this->rx_left,$this->rx_ptr));
// If our buffer is empty, we'll try and read from the remote
if ($this->rx_left === 0) {
if ($this->hasData($timeout) > 0) {
try {
if (! strlen($this->rx_buf = $this->read(0,self::RX_BUF_SIZE))) {
if ($this->DEBUG)
Log::debug(sprintf('%s: - Nothing read',self::LOGKEY));
return self::TTY_TIMEOUT;
}
} catch (\Exception $e) {
return ($e->getCode() === 11) ? self::TTY_TIMEOUT : self::ERROR;
}
if ($this->DEBUG)
Log::info(sprintf('%s: - Read [%d] bytes',self::LOGKEY,strlen($this->rx_buf)));
$this->rx_ptr = 0;
$this->rx_left = strlen($this->rx_buf);
$ch = $this->read($timeout,1);
} else {
return self::TTY_TIMEOUT;
}
return self::TIMEOUT;
}
$rc = ord(substr($this->rx_buf,$this->rx_ptr,1));
$this->rx_left--;
$this->rx_ptr++;
if ($this->DEBUG)
Log::debug(sprintf('%s:= Return [%x] (%c)',self::LOGKEY,$rc,$rc));
return $rc;
return ord($ch);
}
public function rx_purge(): void
{
$this->rx_ptr = $this->rx_left = 0;
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Discarding [%d] chars from the RX buffer',self::LOGKEY,strlen($this->tx_buf)));
$this->rx_buf = '';
}
/**
* Clear our TX buffer
*/
public function tx_purge(): void
{
if ($this->DEBUG)
Log::debug(sprintf('%s:+ Discarding [%d] chars from the TX buffer',self::LOGKEY,strlen($this->tx_buf)));
$this->tx_buf = '';
}
/**
* Send data to the client
*
@ -459,17 +410,24 @@ final class SocketClient {
* @return false|int
* @throws \Exception
*/
public function send($message,int $timeout,$length=NULL)
public function send($message,int $timeout)
{
if ($timeout AND (! $rc=$this->canSend($timeout)))
return $rc;
if (is_null($length))
$length = strlen($message);
if ($this->DEBUG)
Log::debug(sprintf('%s:- Sending [%d] chars [%s]',self::LOGKEY,strlen($message),Str::limit($message,15)));
return ($this->type === 'TCP')
? socket_write($this->connection,$message,$length)
: socket_sendto($this->connection,$message,$length,0,$this->address_remote,$this->port_remote);
switch ($this->type) {
case SOCK_STREAM:
return socket_write($this->connection,$message,strlen($message));
case SOCK_DGRAM:
return socket_sendto($this->connection,$message,strlen($message),0,$this->address_remote,$this->port_remote);
default:
throw new SocketException(SocketException::SOCKET_ERROR,sprintf('Unhandled socket type: %s',$this->type));
}
}
/**
@ -490,7 +448,7 @@ final class SocketClient {
throw new \Exception('Socket Error: '.socket_strerror(socket_last_error()));
if ($this->DEBUG)
Log::debug(sprintf('Socket select returned [%d] (%d)',$rc,$timeout),['read'=>$read,'write'=>$write,'except'=>$except]);
Log::debug(sprintf('%s:= Socket select returned [%d] with timeout (%d)',self::LOGKEY,$rc,$timeout),['read'=>$read,'write'=>$write,'except'=>$except]);
return $rc;
}
@ -502,12 +460,12 @@ final class SocketClient {
public function timer_rest(int $timer): int
{
return (($timer)-time());
return $timer-time();
}
public function timer_set(int $expire): int
{
return (time()+$expire);
return time()+$expire;
}
/**
@ -518,11 +476,16 @@ final class SocketClient {
* @param int $timeout
* @return int
* @throws \Exception
* @deprecated use canSend or hasData
*/
public function ttySelect(bool $read,bool $write, int $timeout): int
{
if (strlen($this->rx_buf) && ($this->rx_left))
if ($this->rx_left) {
if ($this->DEBUG)
Log::debug(sprintf('%s:= We still have [%d] chars in the RX buffer.',self::LOGKEY,$this->rx_left));
return 1;
}
$read = $read ? [$this->connection] : NULL;
$write = $write ? [$this->connection] : NULL;

57
app/Classes/Sock/SocketServer.php
View File

@ -22,26 +22,38 @@ final class SocketServer {
$this->port = $port;
$this->type = $type;
$this->_init();
}
$this->createSocket();
/**
* Bind to our Socket
*
* @throws SocketException
*/
private function _bindSocket(): void
{
if (socket_bind($this->server,$this->bind,$this->port) === FALSE)
throw new SocketException(SocketException::CANT_BIND_SOCKET,socket_strerror(socket_last_error($this->server)));
}
public function __get($key)
{
switch ($key) {
case 'handler':
return $this->handler;
default:
throw new \Exception('Unknown key: '.$key);
}
}
public function __set($key,$value)
{
switch ($key) {
case 'handler':
return $this->handler = $value;
default:
throw new \Exception('Unknown key: '.$key);
}
}
/**
* Create our Socket
*
* @throws SocketException
*/
private function _createSocket(): void
private function createSocket(): void
{
/**
* Check dependencies
@ -71,17 +83,6 @@ final class SocketServer {
socket_set_option($this->server,SOL_SOCKET,SO_REUSEADDR,1);
}
/**
* Setup Socket and Bind
*
* @throws SocketException
*/
private function _init(): void
{
$this->_createSocket();
$this->_bindSocket();
}
/**
* Our main loop where we listen for connections
*
@ -118,7 +119,7 @@ final class SocketServer {
*
* @throws SocketException
*/
private function loop_tcp()
private function loop_tcp(): void
{
while (TRUE) {
if (($accept = socket_accept($this->server)) === FALSE)
@ -136,7 +137,7 @@ final class SocketServer {
}
}
private function loop_udp()
private function loop_udp(): void
{
while (TRUE) {
$r = new SocketClient($this->server);
@ -149,14 +150,4 @@ final class SocketServer {
}
}
}
/**
* Set our connection handler Class and Method
*
* @param array $handler
*/
public function setConnectionHandler(array $handler): void
{
$this->handler = $handler;
}
}