Sproto PHP Extension Bind

The future net protocol Sproto was implemented by many language listed in sproto_wiki how does it can be absenced in php world Here is the php implementation

#prerequisite

generate c2s.spb and s2c.spb with sprotodump

	lua sprotodump.lua -spb c2s.proto -o c2s.spb
	lua sprotodump.lua -spb s2c.proto -o s2c.spb

#How To use

	<?php
	require 'sproto.php';
	$sproto=new Sproto();
	$sproto->load_proto_from_file('s2c', 's2c.spb');
	$sproto->load_proto_from_file('c2s', 'c2s.spb');
	$sproto->dumpproto('s2c');//see if the dumped proto right
	$sproto->dumpproto('c2s');//see if the dumped proto right
	//encde and decode
	$buffer=$sproto->encode('c2s', 'get.request', array('what'=>'want_some_key'));
	$ret=$sproto->decode('c2s', 'get.request', $buffer);
	var_dump($ret);
	//make request 
	//notice the request session id must be the same with the response session id
	$reqbuffer=$sproto->request('c2s', 'get', array('what'=>'wanted'),10001);
	$ret=$sproto->dispath('c2s', $reqbuffer);
	var_dump($ret);
	//make response
	//notice the response session id must be the same with the request session id
	$resbuffer=$sproto->response('c2s', 'get', array('result'=>'wanted_is_here'),10001);
	$ret=$sproto->dispath('c2s', $resbuffer);
	var_dump($ret);

#Here is a complicated example

    require 'sproto.php';
	$sproto=new Sproto();
	$sproto->load_proto_from_file('s2c', 's2c.spb');
	$sproto->load_proto_from_file('c2s', 'c2s.spb');
	$e=0;$t=0;
	$send_session=1;
	//assume skynet gate server listen on 127.0.0.1:8888
	$s=fsockopen('127.0.0.1',8888,$e,$t,1000);
	stream_set_blocking($s, 0);
	//send the handshake to server
	$hand=$sproto->request('c2s', 'handshake', array(),$send_session++);
	fwrite($s, Sproto::netpack($hand));
	//set something 
	// $hand=$sproto->request('c2s', 'set', array('what'=>'hello','value'=>'hello from c programmer dietoad'),10001);
	// fwrite($s, Sproto::netpack($hand));
	$hand=$sproto->request('c2s', 'set', array('what'=>'yes','value'=>'yes message from php'),$send_session++);
	fwrite($s, Sproto::netpack($hand));
	// stream_set_blocking(STDIN,0);
	while(1)
	{
	    $len=array();
	    $header=fread($s, 2);
	    if($s&&$header)
	    {
	        //header size is a 2bytes big endian unsigned short  
	        $len=unpack('nlen', $header);
	        var_dump($len);
	    }
	    if(!empty($len['len']))
	    {
	        $len=$len['len'];
	        $left=$len;
	        $readed=0;
	        $r='';
	        $buffer='';
	        //read until we have enough bytes 
	        while($readed!=$len)
	        {
	            $r=fread($s, $left);
	            $buffer.=$r;
	            $read_len=strlen($r);
	            $readed+=$read_len;
	            $left-=$read_len;
	        }
	        //unpacked the netpackage receive from the server
	        $unpacked=Sproto::unpack($buffer);
	        $disp=$sproto->dispath('c2s',$unpacked);
	        print_r($disp);
	        $receive_session=!empty($disp['session'])?$disp['session']:0;
	        if($receive_session==($send_session-1))
	        {
	            echo "type hello or yes and press enter\n";
	            $cx=fgets(STDIN);
	            if($cx)
	            {
	                $reqbuffer=$sproto->request('c2s','get',array('what'=>trim('yes')), $send_session++);
	                echo strlen($reqbuffer),"\n";
	                fwrite($s, Sproto::netpack($reqbuffer));
	            }
	        }
	       
	    }
	    usleep(100000);
	}

#Problems there is some naughty BUGS in the php master version 7.2