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Code Duplication    Length = 12-15 lines in 2 locations

src/fkooman/VPN/Server/OpenVpn/ServerApi.php 2 locations

@@ 67-81 (lines=15) @@
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     * 
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     * @return string the OpenVPN version string
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     */
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    public function version()
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    {
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        try {
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            $this->serverSocket->open();
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            $response = $this->serverSocket->command('version');
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            $this->serverSocket->close();
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            return $this->ok(
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                'version',
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                substr($response[0], strlen('OpenVPN Version: '))
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            );
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        } catch (ServerSocketException $e) {
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            return $this->error();
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        }
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    }
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    /**
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     * Obtain the current load statistics from OpenVPN.
@@ 121-132 (lines=12) @@
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     *
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     * @param string $commonName the common name of the connection to kill
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     */
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    public function kill($commonName)
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    {
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        try {
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            $this->serverSocket->open();
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            $response = $this->serverSocket->command(sprintf('kill %s', $commonName));
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            $this->serverSocket->close();
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            return $this->ok('kill', 0 === strpos($response[0], 'SUCCESS: '));
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        } catch (ServerSocketException $e) {
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            return $this->error();
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        }
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    }
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    private function ok($command, $response)
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    {