as mentioned in the title, i have a python-xmlrpc server that a php-xmlrpc client that uses zend-framework (yes the older one and no i can't change that, the machine the client runs on is a server itself and heavily version-controlled) communicates with. Until now everything worked quite well but when trying to send a logfile as a string to the client that exceeds 1233 characters (most logs are far larger than that) i get a gzinflate(): data error.
following is the code i use on the server to return the text:
def showlog(loghash):
aserverlog = f'/home/testing/api/logs/serverlog{str(datetime.now().strftime("%d_%m_%Y_%HH_%MM_%SS"))}' + "_" + "anderer_log.txt"
with redirect_stdout(open(aserverlog, 'a')):
print("md5: ", loghash)
tailfile = f'/path/to/{loghash}.txt'
with redirect_stdout(open(aserverlog, 'a')):
print("file?: ", tailfile)
with open(tailfile, 'r') as h:
logtail = h.read()
with redirect_stdout(open(aserverlog, 'a')):
print("wtf: ", logtail)
return logtail
here is the php code on the client side:
<!doctype html>
<head>
<title>Log</title>
</head>
<body>
<?php
function al($className) {
$include_file = str_replace("_", "/", $className) . ".php";
if (!empty($include_file)) {require_once($include_file);} }
spl_autoload_register('al');
session_start();
function dump($obj) {
Zend_Debug::dump($obj);
}
$loghash = rtrim($_POST['hashinp']);
try {
$client = new Zend_XmlRpc_Client("http://serverip/RPC2");
$log = $client->call("showlog", $loghash);
} catch (Zend_XmlRpc_Client_FaultException $e) {
dump("Exception");
dump($e->getCode());
dump($e->getMessage());
dump($client->getLastRequest()->__toString());
dump($client->getLastResponse()->__toString());
} catch (Zend_XmlRpc_Client_HttpException $e) {
dump("Exception2");
dump($e->getCode());
dump($e->getMessage());
dump($client->getLastRequest()->__toString());
dump($client->getLastResponse());
}
echo '<textarea readonly id="log_output" name="log_output" rows="40" cols="130">'.$log.'</textarea>';
?>
</body>
The full error is:
Warning: gzinflate(): data error in /usr/share/php/Zend/Http/Response.php on line 648
I therefore assume that the error lies within the compression-module of the client side xmlrpc-zend-framework as gzinflate is a php-function for decompression.
Has perhaps anybody stumbled upon this and has a solution? At this point I'm considering either entirely switching to soap (which could be somewhat work and time intensive) or trying to tinker with zend (which obviously is a whole different world of bad idea).
A solution has been found: What was necessary was to deactivate the Compression.
$client = new Zend_XmlRpc_Client("http://serverip/RPC2");
$http_client = $client->getHttpClient();
$http_client->setHeaders('Accept-Encoding: compress');
$ret = $client->call("showlog", $loghash);
I am looking for a simple code to create a WebSocket server. I found phpwebsockets but it is outdated now and doesn't support the newest protocol. I tried updating it myself but it doesn't seem to work.
#!/php -q
<?php /* >php -q server.php */
error_reporting(E_ALL);
set_time_limit(0);
ob_implicit_flush();
$master = WebSocket("localhost",12345);
$sockets = array($master);
$users = array();
$debug = false;
while(true){
$changed = $sockets;
socket_select($changed,$write=NULL,$except=NULL,NULL);
foreach($changed as $socket){
if($socket==$master){
$client=socket_accept($master);
if($client<0){ console("socket_accept() failed"); continue; }
else{ connect($client); }
}
else{
$bytes = #socket_recv($socket,$buffer,2048,0);
if($bytes==0){ disconnect($socket); }
else{
$user = getuserbysocket($socket);
if(!$user->handshake){ dohandshake($user,$buffer); }
else{ process($user,$buffer); }
}
}
}
}
//---------------------------------------------------------------
function process($user,$msg){
$action = unwrap($msg);
say("< ".$action);
switch($action){
case "hello" : send($user->socket,"hello human"); break;
case "hi" : send($user->socket,"zup human"); break;
case "name" : send($user->socket,"my name is Multivac, silly I know"); break;
case "age" : send($user->socket,"I am older than time itself"); break;
case "date" : send($user->socket,"today is ".date("Y.m.d")); break;
case "time" : send($user->socket,"server time is ".date("H:i:s")); break;
case "thanks": send($user->socket,"you're welcome"); break;
case "bye" : send($user->socket,"bye"); break;
default : send($user->socket,$action." not understood"); break;
}
}
function send($client,$msg){
say("> ".$msg);
$msg = wrap($msg);
socket_write($client,$msg,strlen($msg));
}
function WebSocket($address,$port){
$master=socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() failed");
socket_set_option($master, SOL_SOCKET, SO_REUSEADDR, 1) or die("socket_option() failed");
socket_bind($master, $address, $port) or die("socket_bind() failed");
socket_listen($master,20) or die("socket_listen() failed");
echo "Server Started : ".date('Y-m-d H:i:s')."\n";
echo "Master socket : ".$master."\n";
echo "Listening on : ".$address." port ".$port."\n\n";
return $master;
}
function connect($socket){
global $sockets,$users;
$user = new User();
$user->id = uniqid();
$user->socket = $socket;
array_push($users,$user);
array_push($sockets,$socket);
console($socket." CONNECTED!");
}
function disconnect($socket){
global $sockets,$users;
$found=null;
$n=count($users);
for($i=0;$i<$n;$i++){
if($users[$i]->socket==$socket){ $found=$i; break; }
}
if(!is_null($found)){ array_splice($users,$found,1); }
$index = array_search($socket,$sockets);
socket_close($socket);
console($socket." DISCONNECTED!");
if($index>=0){ array_splice($sockets,$index,1); }
}
function dohandshake($user,$buffer){
console("\nRequesting handshake...");
console($buffer);
//list($resource,$host,$origin,$strkey1,$strkey2,$data)
list($resource,$host,$u,$c,$key,$protocol,$version,$origin,$data) = getheaders($buffer);
console("Handshaking...");
$acceptkey = base64_encode(sha1($key . "258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true));
$upgrade = "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: $acceptkey\r\n";
socket_write($user->socket,$upgrade,strlen($upgrade));
$user->handshake=true;
console($upgrade);
console("Done handshaking...");
return true;
}
function getheaders($req){
$r=$h=$u=$c=$key=$protocol=$version=$o=$data=null;
if(preg_match("/GET (.*) HTTP/" ,$req,$match)){ $r=$match[1]; }
if(preg_match("/Host: (.*)\r\n/" ,$req,$match)){ $h=$match[1]; }
if(preg_match("/Upgrade: (.*)\r\n/",$req,$match)){ $u=$match[1]; }
if(preg_match("/Connection: (.*)\r\n/",$req,$match)){ $c=$match[1]; }
if(preg_match("/Sec-WebSocket-Key: (.*)\r\n/",$req,$match)){ $key=$match[1]; }
if(preg_match("/Sec-WebSocket-Protocol: (.*)\r\n/",$req,$match)){ $protocol=$match[1]; }
if(preg_match("/Sec-WebSocket-Version: (.*)\r\n/",$req,$match)){ $version=$match[1]; }
if(preg_match("/Origin: (.*)\r\n/",$req,$match)){ $o=$match[1]; }
if(preg_match("/\r\n(.*?)\$/",$req,$match)){ $data=$match[1]; }
return array($r,$h,$u,$c,$key,$protocol,$version,$o,$data);
}
function getuserbysocket($socket){
global $users;
$found=null;
foreach($users as $user){
if($user->socket==$socket){ $found=$user; break; }
}
return $found;
}
function say($msg=""){ echo $msg."\n"; }
function wrap($msg=""){ return chr(0).$msg.chr(255); }
function unwrap($msg=""){ return substr($msg,1,strlen($msg)-2); }
function console($msg=""){ global $debug; if($debug){ echo $msg."\n"; } }
class User{
var $id;
var $socket;
var $handshake;
}
?>
and the client:
var connection = new WebSocket('ws://localhost:12345');
connection.onopen = function () {
connection.send('Ping'); // Send the message 'Ping' to the server
};
// Log errors
connection.onerror = function (error) {
console.log('WebSocket Error ' + error);
};
// Log messages from the server
connection.onmessage = function (e) {
console.log('Server: ' + e.data);
};
If there is anything wrong in my code can you help me fix it? Console in Firefox says:
Firefox can't establish a connection to the server at ws://localhost:12345/.
I was in the same boat as you recently, and here is what I did:
I used the phpwebsockets code as a reference for how to structure the server-side code. (You seem to already be doing this, and as you noted, the code doesn't actually work for a variety of reasons.)
I used PHP.net to read the details about every socket function used in the phpwebsockets code. By doing this, I was finally able to understand how the whole system works conceptually. This was a pretty big hurdle.
I read the actual WebSocket draft. I had to read this thing a bunch of times before it finally started to sink in. You will likely have to go back to this document again and again throughout the process, as it is the one definitive resource with correct, up-to-date information about the WebSocket API.
I coded the proper handshake procedure based on the instructions in the draft in #3. This wasn't too bad.
I kept getting a bunch of garbled text sent from the clients to the server after the handshake and I couldn't figure out why until I realized that the data is encoded and must be unmasked. The following link helped me a lot here: (original link broken) Archived copy.
Please note that the code available at this link has a number of problems and won't work properly without further modification.
I then came across the following SO thread, which clearly explains how to properly encode and decode messages being sent back and forth: How can I send and receive WebSocket messages on the server side?
This link was really helpful. I recommend consulting it while looking at the WebSocket draft. It'll help make more sense out of what the draft is saying.
I was almost done at this point, but had some issues with a WebRTC app I was making using WebSocket, so I ended up asking my own question on SO, which I eventually solved: What is this data at the end of WebRTC candidate info?
At this point, I pretty much had it all working. I just had to add some additional logic for handling the closing of connections, and I was done.
That process took me about two weeks total. The good news is that I understand WebSocket really well now and I was able to make my own client and server scripts from scratch that work great.
Hopefully the culmination of all that information will give you enough guidance and information to code your own WebSocket PHP script.
Good luck!
Edit: This edit is a couple of years after my original answer, and while I do still have a working solution, it's not really ready for sharing. Luckily, someone else on GitHub has almost identical code to mine (but much cleaner), so I recommend using the following code for a working PHP WebSocket solution:
https://github.com/ghedipunk/PHP-Websockets/blob/master/websockets.php
Edit #2: While I still enjoy using PHP for a lot of server-side related things, I have to admit that I've really warmed up to Node.js a lot recently, and the main reason is because it's better designed from the ground up to handle WebSocket than PHP (or any other server-side language). As such, I've found recently that it's a lot easier to set up both Apache/PHP and Node.js on your server and use Node.js for running the WebSocket server and Apache/PHP for everything else. And in the case where you're on a shared hosting environment in which you can't install/use Node.js for WebSocket, you can use a free service like Heroku to set up a Node.js WebSocket server and make cross-domain requests to it from your server. Just make sure if you do that to set your WebSocket server up to be able to handle cross-origin requests.
As far as I'm aware Ratchet is the best PHP WebSocket solution available at the moment. And since it's open source you can see how the author has built this WebSocket solution using PHP.
I've searched the minimal solution possible to do PHP + WebSockets during hours, until I found this article:
Super simple PHP WebSocket example
It doesn't require any third-party library.
Here is how to do it: create a index.html containing this:
<html>
<body>
<div id="root"></div>
<script>
var host = 'ws://<<<IP_OF_YOUR_SERVER>>>:12345/websockets.php';
var socket = new WebSocket(host);
socket.onmessage = function(e) {
document.getElementById('root').innerHTML = e.data;
};
</script>
</body>
</html>
and open it in the browser, just after you have launched php websockets.php in the command-line (yes, it will be an event loop, constantly running PHP script), with this websockets.php file.
I was in your shoes for a while and finally ended up using node.js, because it can do hybrid solutions like having web and socket server in one. So php backend can submit requests thru http to node web server and then broadcast it with websocket. Very efficiant way to go.
Need to convert the the key from hex to dec before base64_encoding and then send it for handshake.
$hashedKey = sha1($key. "258EAFA5-E914-47DA-95CA-C5AB0DC85B11",true);
$rawToken = "";
for ($i = 0; $i < 20; $i++) {
$rawToken .= chr(hexdec(substr($hashedKey,$i*2, 2)));
}
$handshakeToken = base64_encode($rawToken) . "\r\n";
$handshakeResponse = "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: $handshakeToken\r\n";
i am making an application in android that has to read constantly a database hosted in my server, my question is, is better make a loop in android, reading the php document constantly or just read once but the php document makes a loop to get information from a database?
in android studio i just make a loop with a sleep, and read the php document. I don't have the code because i haven't made it, but here is the code to connect with php, just imagine it in a loop:
StringRequest conexion = new StringRequest(Request.Method.POST,
Constantes.URL_NombreIcono,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
if(response.charAt(response.length() - 1) == '1'){
}
else {
NombreGrupo.setText(response);
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast("No se ha podido conectarse con la base de datos", "l");
}
});
RequestQueue requ = Volley.newRequestQueue(this);
requ.add(conexion);
and the php code in this case is like this:
<?php
$con = mysqli_connect('localhost','root','', 'JNDatabase');
if (!$con) {
echo "|Error";
}
else{
$query = "SELECT * FROM Log ORDER BY id DESC LIMIT 1";
$resultado = $con->query($query);
if (!$resultado){
echo "|Error";
}
else {
$row = $resultado->fetch_assoc();
if($row["Realizada"] == 1){
echo $row["Accion"]."|".$row["id"];
}
}
}
?>
The other case, is read the php document once, but the php document makes the loop, i have the code of the loop in php:
<?php
ini_set('max_execution_time', 0);
while (true) {
$con = mysqli_connect('localhost','root','', 'JNDatabase');
if (!$con) {
echo "|Error";
}
else{
$query = "SELECT * FROM Log ORDER BY id DESC LIMIT 1";
$resultado = $con->query($query);
if (!$resultado){
echo "|Error";
}
else {
$row = $resultado->fetch_assoc();
if($row["Realizada"] == 1){
echo $row["Accion"]."|".$row["id"];
}
}
}
ob_flush();flush();sleep(1);
}
?>
so which do you think is better,having in mind that is an android application and i have to take care about the battery.
PDT: I know that exists services like Firebase, but i want to do this with my own server, you know, try to avoid giving the information to other companies
In Android it depends what will you do with data received from your database. But definitely you shouldn't make loop in PHP. What it will do when Android device is off-line? PHP should get data from database (maybe from cache) and pass it to Android device by request.
If you want to show data from database in UI and nothing else, you can use any loop or Handler.postDelayed() API. But would be nice if you will pause your work when application closed or paused.
Or if you want do some work in background like storing data in SQLite you can use AlarmManager or JobScheduler API. There is a list of available tools.
I have a simple AJAX call that retrieves text from a file, pushes it into a table, and displays it. The call works without issue when testing on a Mac running Apache 2.2.26/PHP 5.3 and on an Ubuntu box running Apache 2.2.1.6/PHP 5.3. It does not work on RedHat running Apache 2.2.4/PHP 5.1. Naturally, the RedHat box is the only place where I need it to be working.
The call returns 200 OK but no content. Even if nothing is found in the file (or it's inaccessible), the table header is echoed so if permissions were a problem I would still expect to see something. But to be sure, I verified the file is readable by all users.
Code has been redacted and simplified.
My ajax function:
function ajax(page,targetElement,ajaxFunction,getValues)
{
xmlhttp=new XMLHttpRequest();
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState===4 && xmlhttp.status===200)
{
document.getElementById(targetElement).innerHTML=xmlhttp.responseText;
}
};
xmlhttp.open('GET','/appdir/dir/filedir/'+page+'_funcs.php?function='+ajaxFunction+'&'+getValues+'&'+new Date().getTime(),false);
xmlhttp.setRequestHeader('cache-control','no-cache');
xmlhttp.send();
}
I call it like this:
ajax('pagename','destelement','load_info');
And return the results:
// Custom file handler
function warn_error($errno, $errstr) {
// Common function for warning-prone functions
throw new Exception($errstr, $errno);
}
function get_file_contents() {
// File operation failure would return a warning
// So handle specially to suppress the default message
set_error_handler('warn_error');
try
{
$fh = fopen(dirname(dirname(__FILE__))."/datafile.txt","r");
}
catch (Exception $e)
{
// Craft a nice-looking error message and get out of here
$info = "<tr><td class=\"center\" colspan=\"9\"><b>Fatal Error: </b>Could not load customer data.</td></tr>";
restore_error_handler();
return $info;
}
restore_error_handler();
// Got the file so get and return its contents
while (!feof($fh))
{
$line = fgets($fh);
// Be sure to avoid empty lines in our array
if (!empty($line))
{
$info[] = explode(",",$line);
}
}
fclose($fh);
return $info;
}
function load_info() {
// Start the table
$content .= "<table>
<th>Head1</th>
<th>Head2</th>
<th>Head3</th>
<th>Head4</th>";
// Get the data
// Returns all contents in an array if successful,
// Returns an error string if it fails
$info = get_file_contents();
if (!is_array($info))
{
// String was returned because of an error
echo $content.$info;
exit();
}
// Got valid data array, so loop through it to build the table
foreach ($info as $detail)
{
list($field1,$field2,$field3,$field4) = $detail;
$content .= "<tr>
<td>$field1</td>
<td>$field2</td>
<td>$field3</td>
<td>$field4</td>
</tr>";
}
$content .= "</table>";
echo $content;
}
Where it works, the response header indicates the connection as keep-alive; where it fails, the connection is closed. I don't know if that matters.
I've looked all over SO and the net for some clues but "no content" issues invariably point to same-origin policy problems. In my case, all content is on the same server.
I'm at a loss as to what to do/where to look next.
file_get_contents() expects a parameter. It does not know what you want, so it returned false. Also, you used get_file_contents() which is the wrong order.
This turned out to be a PHP version issue. In the load_info function I was using filter_input(INPUT_GET,"value"), but that was not available in PHP 5.1. I pulled that from my initial code post because I didn't think it was part of the problem. Lesson learned.
I have one problem..
I am making post request to php script. And I am getting back result as an xml. How can I make my qprogressbar working.
I have tried this:
v
oid MainWindow::init()
{
url = "http://127.0.0.1:8888/direkt_php_qt.php";
manager = new QNetworkAccessManager(this);
connect(manager, SIGNAL(downloadProgress(qint64,qint64)),this,SLOT(updateDataTransferProgress(qint64,qint64)));
connect(manager, SIGNAL(finished(QNetworkReply*)),this, SLOT(replyFinished(QNetworkReply*)));
}
void MainWindow::updateDataTransferProgress(qint64 bytesReceived, qint64 bytesTotal)
{
ui->progressBar->setMaximum(bytesTotal + (bytesTotal * 0.25));
ui->progressBar->setValue(bytesReceived);
ui->progressBar->show();
}
But it's not working. I am getting error:
Object::connect: No such signal QNetworkAccessManager::downloadProgress(qint64,qint64)
How can I make this work with manager variable or something like that.
EDIT 2:
This is for example function that is calling init()
void MainWindow::Citanje_korisnika()
{
init();
QUrl params;
params.addQueryItem("action","Citanje_korisnika");
QByteArray data;
data.append(params.toString());
data.remove(0,1);
QNetworkRequest request;
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader,
QVariant("application/x-www-form-urlencoded"));
reply = manager->post(request, data);
}
I tried your code but I always get unexpectedly out from program. Can you change me my function from which I am calling post method so it can work with init()
donwloadProgress is a signal of QNetworkReply.
Try something like this:
url = "http://127.0.0.1:8888/direkt_php_qt.php";
manager = new QNetworkAccessManager(this);
QNetworkReply* reply = manager->get(QNetworkRequest(url));
connect(reply, SIGNAL(downloadProgress(qint64, qint64)),this, SLOT(updateDataTransferProgress(qint64,qint64)));