add clear

wchat/common/HttpClient.php

@@ -460,13 +460,7 @@ class HttpClient
 	private function generate_client($host, $url, $data)
 	{
 		$client = new SClient($host, $this->getHostPort(), $this->isSSL);
-		$client->set([
-			'ssl_host_name'   => $this->host,
-			'ssl_cert_file'   => $this->getSslCertFile(),
-			'ssl_key_file'    => $this->getSslKeyFile(),
-			'ssl_verify_peer' => true,
-			'ssl_cafile'      => $this->getCa(),
-		]);
+		$client->set($this->settings());
 		if (!empty($this->agent)) {
 			$this->header['User-Agent'] = $this->agent;
 		}
@@ -506,6 +500,24 @@ class HttpClient
 		return $client;
 	}
 
+
+	private function settings()
+	{
+		$sslCert = $this->getSslCertFile();
+		$sslKey = $this->getSslKeyFile();
+		$sslCa = $this->getCa();
+		if (empty($sslCert) || empty($sslKey) || empty($sslCa)) {
+			return [];
+		}
+		$params['ssl_host_name'] = $this->host;
+		$params['ssl_cert_file'] = $this->getSslCertFile();
+		$params['ssl_key_file'] = $this->getSslKeyFile();
+		$params['ssl_verify_peer'] = true;
+		$params['ssl_cafile'] = $sslCa;
+
+		return $params;
+	}
+
 	/**
 	 * @param $url
 	 * @param array $data