diff --git a/src/Std/Lib/Cache.php b/src/Std/Lib/Cache.php
index ffe49b3..55ca34b 100644
--- a/src/Std/Lib/Cache.php
+++ b/src/Std/Lib/Cache.php
@@ -47,7 +47,7 @@ class Cache {
   protected int $dataDuration = 1800; // 30分
 
   public function __construct(string $dataDir) {
-    $this->dataDir = ROOT.'/data/cache/openprovider/'.$dataDir.'/';
+    $this->dataDir = ROOT.'/data/cache/'.$dataDir.'/';
   }
 
   /**
diff --git a/src/Std/Lib/Curl.php b/src/Std/Lib/Curl.php
index b04ee76..38860f0 100644
--- a/src/Std/Lib/Curl.php
+++ b/src/Std/Lib/Curl.php
@@ -409,33 +409,22 @@ class Curl {
       $request .= "{$accept}\r\n";
       $request .= "Connection: close\r\n";
 
+      // 認証ヘッダー
       if (!empty($authHeader)) {
         $request .= $authHeader;
       }
 
       // ヘッダーを追加
-      foreach ($this->headers as $name => $value) {
-        $request .= "{$name}: {$value}\r\n";
-      }
-
-      // リファラーが設定されていれば追加
-      if (!empty($this->referer) && !isset($this->headers['Referer'])) {
-        $request .= "Referer: {$this->referer}\r\n";
-      }
-
-      // クッキーヘッダーを追加
-      if (!empty($this->cookies) && !isset($this->headers['Cookie'])) {
-        $cookieStrings = [];
-        foreach ($this->cookies as $name => $value) {
-          $cookieStrings[] = $name.'='.urlencode($value);
-        }
-        $request .= 'Cookie: '.implode('; ', $cookieStrings)."\r\n";
+      $ext = $this->buildHeaderString();
+      if (!empty($ext)) {
+        $request .= $ext;
       }
 
+      // ヘッダー終了
       $request .= "\r\n";
 
       // POSTデータを追加
-      if ($method === 'POST' || $method === 'PUT') {
+      if ($httpData !== '') {
         $request .= $httpData;
       }
 
@@ -507,6 +496,7 @@ class Curl {
       // ヘッダーを解析
       $this->responseHeaders = [];
       $this->responseCode = 0;
+      $redirectUrl = '';
 
       foreach ($headerLines as $index => $header) {
         if ($index === 0) {
@@ -520,6 +510,8 @@ class Curl {
           $name = trim($name);
           $value = trim($value);
           $this->responseHeaders[$name] = $value;
+          
+          $redirectUrl = $this->checkReds($name, $value, $currentUrl);
         }
       }
 
@@ -541,20 +533,23 @@ class Curl {
       }
 
       // リダイレクトが必要な場合
-      if (!empty($redirectUrl) && $redirectCount < $this->maxRedirects) {
+      if ($redirectUrl !== '' && $redirectCount < $this->maxRedirects) {
         $currentUrl = $redirectUrl;
         $redirectCount++;
         $this->info['redirect_count'] = $redirectCount;
+        $this->info['redirect_url'] = $redirectUrl;
 
         // 302や303リダイレクトはGETにメソッドを変更
-        if ($this->responseCode == 302 || $this->responseCode == 303) {
+        if (in_array($this->responseCode, [302, 303], true)) {
           $this->method = 'GET';
           $this->postRaw = '';
           $this->postFields = [];
         }
-      } else {
-        break;
+
+        continue;
       }
+
+      break;
     } while (true);
 
     // リクエスト完了後、元のメソッドに戻す
@@ -629,22 +624,20 @@ class Curl {
    * @return string  リダイレクトURL、リダイレクトがない場合は空文字
    */
   private function checkReds(string $name, string $value, string $currentUrl): string {
-    $redirectUrl = '';
+    if (!$this->followRedirects) return '';
+    if (strtolower($name) !== 'location') return '';
+    if ($this->responseCode < 300 || $this->responseCode >= 400) return '';
+    $redirectUrl = $value;
 
-    if ($this->followRedirects && (strtolower($name) === 'location'
-        && $this->responseCode >= 300 && $this->responseCode < 400)) {
-        $redirectUrl = $value;
-
-        if (strpos($redirectUrl, 'http') !== 0) {
-          if ($redirectUrl[0] === '/') {
-            $uri = new Uri($currentUrl);
-            $redirectUrl = $uri->getScheme().'://'.$uri->getHost()
-              .(NULL !== $uri->getPort() ? ':'.$uri->getPort() : '')
-              .$redirectUrl;
-          } else {
-            $redirectUrl = dirname($currentUrl).'/'.$redirectUrl;
-          }
-        }
+    if (strpos($redirectUrl, 'http') !== 0) {
+      if ($redirectUrl[0] === '/') {
+        $uri = new Uri($currentUrl);
+        $redirectUrl = $uri->getScheme().'://'.$uri->getHost()
+          .(NULL !== $uri->getPort() ? ':'.$uri->getPort() : '')
+          .$redirectUrl;
+      } else {
+        $redirectUrl = dirname($currentUrl).'/'.$redirectUrl;
+      }
     }
 
     return $redirectUrl;
@@ -656,16 +649,16 @@ class Curl {
    * @return string  構築されたヘッダー文字列
    */
   private function buildHeaderString(): string {
-    $headers = [];
+    $request = '';
 
     // ユーザー指定のヘッダーを追加
     foreach ($this->headers as $name => $value) {
-      $headers[] = "{$name}: {$value}";
+      $request .= "{$name}: {$value}\r\n";
     }
 
     // リファラーが設定されていれば追加
     if (!empty($this->referer) && !isset($this->headers['Referer'])) {
-      $headers[] = "Referer: {$this->referer}";
+      $request .= "Referer: {$this->referer}\r\n";
     }
 
     // 必要に応じてクッキーヘッダーを追加
@@ -675,10 +668,10 @@ class Curl {
         $cookieStrings[] = $name.'='.urlencode($value);
       }
 
-      $headers[] = 'Cookie: '.implode('; ', $cookieStrings);
+      $request .= 'Cookie: '.implode('; ', $cookieStrings)."\r\n";
     }
 
-    return implode("\r\n", $headers)."\r\n";
+    return $request;
   }
 
   /**
diff --git a/src/Std/Lib/Openprovider.php b/src/Std/Lib/Openprovider.php
index 3988c8f..7df4e89 100644
--- a/src/Std/Lib/Openprovider.php
+++ b/src/Std/Lib/Openprovider.php
@@ -52,9 +52,9 @@ class Openprovider {
   private string $ip = '';
   private int $resellerId = 0;
   private int $lastAuth = 0;
-  private string $BASEURL = 'https://api.openprovider.eu/v1beta';
-  // private string $BASEURL = DEBUG_MODE ? 'http://api.sandbox.openprovider.nl:8480/v1beta'
-  //                                      : 'https://api.openprovider.eu/v1beta';
+  // private string $BASEURL = 'https://api.openprovider.eu/v1beta';
+  private string $BASEURL = DEBUG_MODE ? 'http://api.sandbox.openprovider.nl:8480/v1beta'
+                                       : 'https://api.openprovider.eu/v1beta';
 
   public function __construct() {
     if (!OPENPROVIDER_ENABLED) return;
@@ -107,6 +107,7 @@ class Openprovider {
     if ($curl->getResponseCode() != 200) {
       $err = json_decode($body, true);
       assert_not_null($err, "エラーの受け取りに失敗。");
+      // kys($body);
       assert($curl->getResponseCode() == 200, $err['desc']);
       return Result::Error();
     }