Php connect to https server

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PHP Application — Quick Connect to HTTPS Server

The problem is, what I want to develop an application (probably PHP?), capable of making quick connection to a SSL secured server and send/get data from it. My aim is to make it send the query and read the result as quick as possible. I am trying various solutions and benchmarking them all. I have tried fsockopen() and CURL, however, wondering if there are any solutions how I could improve them?

Results are as follows: fsockopen():

Questions are: 1) When the query is started to execute on the server, to which I connect — after headers are sent or after I get the page and connections closes? 2) Which is the exect time of CURL to which I should compare the fsockopen() result? Is starttransfer_time even before the headers are sent to server? This would mean that fsockopen() is faster, isn’t it? 3) Any solutions how to tweak SSL connectivity on the server, on which the code is executed? Any tweaks possible to OpenSSL module of PHP (any possible downgrades of crypto?) to make it faster? 4) Any solution to go without SSL to SSL secured server? 5) Would C++ or other solution be any quicker in this case?

Any ideas are welcome 🙂 I got obsessed by this «ms» race 🙂

There is no close-form solution to your question.

About C++, it’s true that PHP is interpreted and C++ is compiled+optimized, but all crypto libraries in PHP are in plain C, so compiled+optimized.

Making a shorter server key fastens the handshake phase a little, according to the server hardware. Also, most important, all network protocols that rely on TCP are affected by network delays when processing transactions, which are different in behaviour from data transfers (like FTP) because of the fact that they are synchronized.

1.You have to close the connection manually

4.Unless you want to write the full SSL protocol by yourself, better use the most performant library available, openSSL

5.Yes and no, at least you may get a performance increase but maybe not significant. In general, I would recommend it

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How to Use SSL Sockets with PHP

SSL sockets are perfect for sending secure data. With certificates, you can verify the identify of the host, the client, or both. Signed certificates cost money but you can create and self-sign a certificate. Check out the code samples below to see how to generate SSL certificates and create SSL clients and servers. Examples include raw socket communication as well as the common HTTPS protocol.

Generating an OpenSSL PEM

$certificateData = array( 
"countryName" => "US", 
"stateOrProvinceName" => "Texas", 
"localityName" => "Houston", 
"organizationName" => "DevDungeon.com", 
"organizationalUnitName" => "Development", 
"commonName" => "DevDungeon", 
"emailAddress" => "nanodano@devdungeon.com"
);

// Generate certificate
$privateKey = openssl_pkey_new();
$certificate = openssl_csr_new($certificateData, $privateKey);
$certificate = openssl_csr_sign($certificate, null, $privateKey, 365);

// Generate PEM file
$pem_passphrase = 'abracadabra'; // empty for no passphrase
$pem = array();
openssl_x509_export($certificate, $pem[0]);
openssl_pkey_export($privateKey, $pem[1], $pem_passphrase);
$pem = implode($pem);

// Save PEM file
$pemfile = './server.pem';
file_put_contents($pemfile, $pem);

SSL Client Socket

$socket = stream_socket_client("ssl://192.168.1.2:5522", $errno, $errstr);
if ($socket) echo fread($socket, 2000);
>

$host = '192.168.1.2';
$port = 5522;
$timeout = 30;
$cert = 'e:\www\workspace\php\sockets\server.pem'; // Path to certificate
$context = stream_context_create( 
array('ssl'=>array('local_cert'=> $cert))
);
if ($socket = stream_socket_client( 
'ssl://'.$host.':'.$port, 
$errno, 
$errstr, 
30, 
STREAM_CLIENT_CONNECT, 
$context)
) fwrite($socket, "\n"); 
echo fread($socket,8192); 
fclose($socket);
> else echo "ERROR: $errno - $errstr\n";
>

SSL Server Socket

$context = stream_context_create();

// local_cert must be in PEM format
stream_context_set_option($context, 'ssl', 'local_cert', $pemfile);

// Pass Phrase (password) of private key
stream_context_set_option($context, 'ssl', 'passphrase', $pem_passphrase);
stream_context_set_option($context, 'ssl', 'allow_self_signed', true);
stream_context_set_option($context, 'ssl', 'verify_peer', false);

// Create the server socket
$socket = stream_socket_server( 
'ssl://0.0.0.0:9001', 
$errno, 
$errstr, 
STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, 
$context
);

// fwrite/fread to $socket

HTTPS Client

// Get port and IP address
$service_port = getservbyname('www', 'tcp');
$address = gethostbyname('www.google.com');

// Bind socket
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
>

// Connect
$result = socket_connect($socket, $address, $service_port);
if ($result === false) echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
>

// Create HTTP request
$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: www.google.com\r\n";
$in .= "Connection: Close\r\n\r\n";
$out = '';

// Send HTTP request
socket_write($socket, $in, strlen($in));

// Read and output response
while ($out = socket_read($socket, 2048)) echo $out;
>

// Close socket
socket_close($socket);

HTTPS Server

This is just a slight extension of the SSL Server code above to accept and respond as an HTTP server

$context = stream_context_create();

// local_cert must be in PEM format
stream_context_set_option($context, 'ssl', 'local_cert', '/path/to/pem/file');
stream_context_set_option($context, 'ssl', 'passphrase', $pem_passphrase);
stream_context_set_option($context, 'ssl', 'allow_self_signed', true);
stream_context_set_option($context, 'ssl', 'verify_peer', false);

// Create the server socket
$server = stream_socket_server('ssl://192.168.1.96:9001', $errno, $errstr, STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, $context);

while(true)
 $buffer = ''; 
$client = stream_socket_accept($server); 
if($client) // Read until double CRLF 
while( !preg_match('/\r?\n\r?\n/', $buffer) ) 
$buffer .= fread($client, 2046); 
// Respond to client 
fwrite($client, "200 OK HTTP/1.1\r\n" 
. "Connection: close\r\n" 
. "Content-Type: text/html\r\n" 
. "\r\n" 
. "Hello World! " . microtime(true) 
. "\n 
"); 
fclose($client); 
>
>
 
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