privateGPT MCP Server
by Fujitsu-AI
<?php
/**
* MCPContinueChatClient.php
*
* A PHP script acting as a Continue Chat Client. It connects to a server via TCP,
* sends a Continue Chat request, and receives the server's response.
*
* Usage:
* php MCPContinueChatClient.php --server-ip <IP> --server-port <Port> --token <Token> --conversation-id <ConversationID> --message <Message>
*/
/**
* Function to parse command line arguments
*
* @param array $args Command line arguments
* @return array Associative array of parsed arguments
*/
function parseArguments($args) {
$parsedArgs = [];
$argc = count($args);
for ($i = 1; $i < $argc; $i++) {
switch ($args[$i]) {
case '--server-ip':
if (isset($args[$i + 1]) && !startsWith($args[$i + 1], '--')) {
$parsedArgs['serverIp'] = $args[++$i];
} else {
fwrite(STDERR, "Error: --server-ip expects a value.\n");
exit(1);
}
break;
case '--server-port':
if (isset($args[$i + 1]) && !startsWith($args[$i + 1], '--')) {
$parsedArgs['serverPort'] = intval($args[++$i]);
} else {
fwrite(STDERR, "Error: --server-port expects a value.\n");
exit(1);
}
break;
case '--token':
if (isset($args[$i + 1]) && !startsWith($args[$i + 1], '--')) {
$parsedArgs['token'] = $args[++$i];
} else {
fwrite(STDERR, "Error: --token expects a value.\n");
exit(1);
}
break;
case '--conversation-id':
if (isset($args[$i + 1]) && !startsWith($args[$i + 1], '--')) {
$parsedArgs['conversationId'] = $args[++$i];
} else {
fwrite(STDERR, "Error: --conversation-id expects a value.\n");
exit(1);
}
break;
case '--message':
if (isset($args[$i + 1]) && !startsWith($args[$i + 1], '--')) {
$parsedArgs['message'] = $args[++$i];
} else {
fwrite(STDERR, "Error: --message expects a value.\n");
exit(1);
}
break;
default:
fwrite(STDERR, "⚠️ Warning: Unknown argument: {$args[$i]}\n");
}
}
return $parsedArgs;
}
/**
* Helper function to check if a string starts with a specific prefix
*
* @param string $string The string to check
* @param string $prefix The prefix
* @return bool True if the string starts with the prefix, otherwise False
*/
function startsWith($string, $prefix) {
return substr($string, 0, strlen($prefix)) === $prefix;
}
/**
* Function for interactively prompting a parameter (optional)
*
* @param string $prompt The prompt message
* @return string User input
*/
function askQuestionPrompt($prompt) {
if (preg_match('/^win/i', PHP_OS)) {
// Windows-specific input prompt
$vbscript = sys_get_temp_dir() . 'prompt_input.vbs';
file_put_contents($vbscript, 'wscript.echo(InputBox("' . addslashes($prompt) . '", "", ""))');
$response = shell_exec("cscript //nologo " . escapeshellarg($vbscript));
unlink($vbscript);
return trim($response);
} else {
// Unix/Linux input prompt
echo $prompt;
$handle = fopen("php://stdin", "r");
$response = trim(fgets($handle));
fclose($handle);
return $response;
}
}
/**
* Function to send a Continue Chat request over a TCP connection
*
* @param string $serverIp Server IP address
* @param int $serverPort Server port
* @param array $payload Payload to send as an associative array
* @return array Server response as an associative array
* @throws Exception On connection errors or JSON parsing errors
*/
function sendContinueChatRequest($serverIp, $serverPort, $payload) {
$jsonPayload = json_encode($payload);
if ($jsonPayload === false) {
throw new Exception("Error encoding JSON payload.");
}
$errno = 0;
$errstr = '';
$timeout = 30; // seconds
$client = @fsockopen($serverIp, $serverPort, $errno, $errstr, $timeout);
if (!$client) {
throw new Exception("Connection error: $errstr ($errno)");
}
echo "🔗 Connected to server ({$serverIp}:{$serverPort}).\n";
echo "📤 Sending payload: $jsonPayload\n";
fwrite($client, $jsonPayload);
$responseData = '';
stream_set_timeout($client, $timeout);
while (!feof($client)) {
$data = fread($client, 1024);
if ($data === false) {
throw new Exception("Error reading data from server.");
}
if ($data === '') {
break; // No more data
}
echo "📥 Received data: $data\n";
$responseData .= $data;
// Attempt to parse received data as JSON
$parsedData = json_decode($responseData, true);
if ($parsedData !== null) {
echo "✅ JSON response successfully parsed.\n";
fclose($client);
return $parsedData;
}
// Check if the stream timed out
$info = stream_get_meta_data($client);
if ($info['timed_out']) {
throw new Exception("Timeout waiting for data from server.");
}
}
fclose($client);
throw new Exception("Connection to server closed before a complete response was received.");
}
/**
* Main function of the script
*/
function main($argv) {
$parsedArgs = parseArguments($argv);
$serverIp = $parsedArgs['serverIp'] ?? null;
$serverPort = $parsedArgs['serverPort'] ?? null;
$token = $parsedArgs['token'] ?? null;
$conversationId = $parsedArgs['conversationId'] ?? null;
$message = $parsedArgs['message'] ?? null;
// Check if all required parameters are present
if (!$serverIp || !$serverPort || !$token || !$conversationId || !$message) {
fwrite(STDERR, "❌ ERROR: Missing required parameters.\n");
fwrite(STDOUT, "Usage: php MCPContinueChatClient.php --server-ip <IP> --server-port <Port> --token <Token> --conversation-id <ConversationID> --message <Message>\n");
exit(1);
}
$payload = [
"command" => "continue_chat",
"token" => $token,
"arguments" => [
"chatId" => $conversationId,
"question" => $message
]
];
try {
echo "💬 Sending Continue Chat request...\n";
$response = sendContinueChatRequest($serverIp, $serverPort, $payload);
echo "✅ Server Response:\n";
echo json_encode($response, JSON_PRETTY_PRINT) . "\n";
} catch (Exception $e) {
fwrite(STDERR, "❌ ERROR: " . $e->getMessage() . "\n");
}
}
main($argv);
?>